ML103280246

OL - FW: Update Action Item List

ML103280246
Person / Time
Site:	Watts Bar
Issue date:	11/24/2010
From:	Office of Nuclear Reactor Regulation
To:	Division of Operating Reactor Licensing
References
Download: ML103280246 (49)

Text

1 WBN2Public Resource From:

Darbali, Samir Sent:

Wednesday, November 24, 2010 11:13 AM To:

Poole, Justin

Subject:

FW: Update Action Item List Attachments:

20101111 Open Item List Master TVA Update 11-11-10.docx From: Garg, Hukam Sent: Tuesday, November 16, 2010 3:30 PM To: Darbali, Samir

Subject:

FW: Update Action Item List Samir; Here is the updated list. Please put in the g drive and inform everyone about it.

Hukam From: Clark, Mark Steven [1]

Sent: Tuesday, November 16, 2010 3:20 PM To: Garg, Hukam

Subject:

Update Action Item List

Regards, Steve Steve Clark Bechtel Power Corp.

Control Systems Watts Bar 2 Completion Project Phone: 423.365.1664 e-mail: msclark0@tva.gov

Hearing Identifier:

Watts_Bar_2_Operating_LA_Public Email Number:

198 Mail Envelope Properties (0046140293E11F408991442DB4FE25CA127DB4AEFE)

Subject:

FW: Update Action Item List Sent Date:

11/24/2010 11:12:40 AM Received Date:

11/24/2010 11:12:44 AM From:

Darbali, Samir Created By:

Samir.Darbali@nrc.gov Recipients:

"Poole, Justin" <Justin.Poole@nrc.gov>

Tracking Status: None Post Office:

HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 632 11/24/2010 11:12:44 AM 20101111 Open Item List Master TVA Update 11-11-10.docx 357786 Options Priority:

Standard Return Notification:

No Reply Requested:

No Sensitivity:

Normal Expiration Date:

Recipients Received:

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 001 All All B

(

The Watts Bar Nuclear Plant FSAR red-line for Unit 2 (Agency wide Documents Access and Management 12/15/2009 Presentation Slides

1. Y Closed Closed EICB RAI ML093230343 3/12/2010 NNC 11/19/09: The FSAR contains mostly description of 002 All All B

(

Are there I&C components and systems that have changed to a new or different digital technology 12/15/2009 Presentation Slides

2. Y Closed Closed EICB RAI ML093230343 3/12/2010 NNC 11/19/09: The FSAR contains mostly description of 003 All All B

(

Because a digital I&C platform can be configured and programmed for different applications the review 12/15/2009 Presentation Slides

3. Y Closed Closed EICB RAI ML093230343 3/12/2010 NNC 11/19/09: The FSAR contains mostly description of 004 All All B

(

Please identify the information that will be submitted for each unreviewed digital I&C system and Responder: Webb 1/13/10 Public Meeting

4. Y Closed Closed EICB RAI ML093230343 January 13, 2010 NNC 11/19/09: LIC-110 Rev. 1 Section 6 2 2 states: "Design 005 7.1.3.

1

(

G By letter date February 28, 2008 (Agencywide Documents Access and Management System Responder: Craig/Webb

5. Y Closed Closed EICB RAI ML093431118 TVA Letter dated 2/5/10 006

(

G Amendment 95 of the FSAR, Chapter 7.3, shows that change 7 3-1 consists of updating a reference from By letter dated February 5, 2010: TVA provided the Unit 2 setpoint methodology (WCAP-177044-

6. Y Closed Closed EICB RAI ML093431118 TVA Letter dated 2/5/10 NNC: WCAP-12096 Rev. 7 (ML073460281) is in ADAMS 007 7.1.3.

1

(

G The setpoint methodology has been reviewed and approved by the NRC staff in Section 7 1 3 1 of TVA Letter Dated March 12, 2010 (Enclosure 1, Item No 7 on Page 7 of 15): TVA responded to

7. Y Closed This item is reviewed in Closed EICB RAI ML093431118 TVA Letter dated 3/12/10 TVA to provide Rev. 8 of the Unit 1 document (which is the current 008 7.3

(

G There are several staff positions that provide guidance on setpoint methodology (e g Reg Guide 1 105 BTP TVA Letter Dated March 12, 2010 (Enclosure 1, Item No 8 on Page 7 of 15): TVA responded to

8. Y Closed Closed EICB RAI ML093431118 TVA Letter dated 3/12/10 009 7.3.2 5.6, 6 3 5

(

D a

Change 7.3-2, identified in Watts Bar Nuclear Plant FSAR red-line for Unit 2 (ADAMS Accession Number TVA Letter Dated March 12, 2010 (Enclosure 1, Item No 9 on Page 8 of 15): TVA responded to

9. Y Closed Closed EICB RAI ML093431118 3/12/10, ML101680598 010 7.3 7.3

(

D a

The original SER on Watts Bar (NUREG-0847) documents that the scope of the review of FSAR TVA Letter Dated March 12, 2010 (Enclosure 1, Item No 10 on Page 8 of 15): TVA responded to

10. Y Closed Closed EICB RAI ML093431118 3/12/10, ML101680598 011 7.3.2 5.6, 6 3 5

(

D a

NUREG-0847 Supplement No. 2 Section 7.3.2 includes an evaluation of a change in containment TVA Letter Dated March 12, 2010 (Enclosure 1, Item No 11 on Page 13 of 15): TVA responded

11. Y Closed Closed EICB RAI ML093431118 ML101680598, Item 9 012 7.4 7.4

(

D a

The original SER on Watts Bar (NUREG-0847) documents that the scope of the review of FSAR TVA Letter Dated March 12, 2010 (Enclosure 1, Item No 12 on Page 13 of 15): TVA responded

12. Y Closed Closed EICB RAI ML093431118 TVA Letter dated 3/12/10 013 7.1.3.

1

(

G Chapter 7 and Chapter 16 of Amendment 95 to the FSAR do not include any setpoint values Please TVA Letter Dated March 12, 2010 (Enclosure 1, Item No 13 on Page 14 of 15): TVA responded

13. Y Closed Closed EICB RAI ML093431118 TVA Letter dated 3/12/10 TS have been docketed.

014 All All B

(

Provide the justification for any hardware and software changes that have been made since the previous U S Date: 4/27/10 Responder: TVA

14. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 015

(

G Verify that the refurbishment of the power range nuclear instrumentation drawers resulted in only like-Date: 4/27/10 Responder: TVA

15. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 016 B

(

C a

Identify the precedents in license amendment requests (LARs) if any for source range monitors or Date: 4/27/10 Responder: TVA

16. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 017 7.3.1 7.3.1, 5 5 5

(

D a

Identify precedents in LARs, if any, for the solid state protection system Also identify any hardware Date: 4/27/10

17. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 018

(

G Identify any changes made to any instrumentation and control (I&C) system based on prior knowledge of Date: 4/27/10 Responder: TVA

18. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 019

(

G Verify that the containment purge isolation radiation monitor is the same as used in Watts Bar Unit 1 or Date: 4/27/10

19. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 020

(

G Provide environmental qualification information pursuant to Section 50 49 of Title 10 of the Code of Date: 4/27/10 Responder: TVA

20. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 NNC 4/30/10: SRP Section 7.0 states: "The organization 021 7.3

(

G For the Foxboro Spec 200 platform, identify any changes in hardware from the precedent systems Date: 5/25/10

21. Y Closed The resolution of this item Closed NRC Meeting Summary TVA Letter dated 6/18/10 The resolution of this item will be covered by OI#288 022 7.3.2 5.6, 6 3 5

(

D a

Verify the auxiliary feedwater control refurbishment results in a like-for-like replacement and identify any Date: 4/27/10

22. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 023

(

G Provide environmental qualification (10 CFR 50.49) information for safety-related control transmitters and Date: 4/27/10 Responder: TVA

23. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 NNC 4/30/10: SRP Section 7.0 states: "The organization 024

(

C Provide a schedule by the January 13, 2010, meeting for providing information in accordance with I&C During the January 13, 2010 meeting, TVA presented a schedule for completing various

24. Y Closed Closed NRC Meeting Summary N/A - Request for schedule NNC 4/30/10: Carte to address response with respect to PAMS 025 7.5.2 7.5.1

(

S i

For the containment radiation high radiation monitor, verify that the information provided by TVA is Date: 4/27/10

25. Y Closed Closed NRC Meeting Summary ML101230248, Item 12 026

(

G Provide environmental qualification (10 CFR 50.49) information for safety-related monitoring transmitters Date: 4/27/10 Responder: TVA

26. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 NNC 4/30/10: SRP Section 7.0 states: "The organization 027 7.7.1.

4

(

C For Foxboro I/A provide information regarding safety/non-safety-related interaction common cause Date: 4/27/10 Responder: TVA

27. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 028

(

G For the turbine control AEH system, verify that the refurbishment results in a like-for-like replacement Responder: Mark Scansen Date: 4/27/10

28. Y Closed Closed NRC Meeting Summary TVA Letter dated 10/5/10 029

(

C For the rod control system, verify that the refurbishment results in a like-for-like replacement Date: 4/27/10 Responder: TVA

29. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 030

(

G Regarding the refurbishment of I&C equipment, identify any component digital upgrades and if so Responder: Clark

30. Y Closed Closed NRC Meeting Summary TVA Letter dated 10/5/10 031

(

C For the rod position indication system (CERPI),

provide information in accordance with ISG 4 Need to Date: 4/27/10 Responder: TVA

31. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 CERPI is non-safety related.

Note: The issue of interlock with 032

(

C For the process computer, need to consider cyber security issues and emergency response data system Date: 4/27/10 Responder: TVA

32. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 EICB will no longer consider cyber issues 033

(

C For the loose parts monitoring system, provide information regarding interactions with safety related Date: 4/27/10 Responder: TVA

33. Y Closed Closed NRC Meeting Summary TVA Letter dated 4/27/10 The loose parts monitoring system is not connected to any 034

(

G 2/4/2010 Responder: TVA

34. Y Closed Awaiting NRC evaluation of Closed N/A TVA Letter dated 4/27/10 034.

1 a

r g

Chapter 7.1 - Introduction Reactor Coolant System Flow Rate Measurement

35. Y Close Closed N/A N/A 034.

2

(

G Chapter 7.2 - Reactor Trip System Deletion of Neutron Flux Negative Rate Trip

36. Y Close Closed N/A N/A 034.

3 7.3 7.3

(

D a

Chapter 7.3 - ESFAS Design Basis Analysis Parameters

37. Y Closed Closed N/A N/A 034.

4 7.5.1.

1 7.5.2

(

M a

Chapter 7.5 - Instrumentation Systems Important to Safety

38. Y Closed Closed N/A N/A Closed 034.

5 7.5.1.

1 7.5.2 7 6 7 r

c u

Chapter 7.6 - All Other Systems Required for Safety Plant Process Computer Replacement

39. Y Closed Closed N/A N/A Closed 034.

6 n

g h

Chapter 7.7 Control Systems Alternate Means for Monitoring Control or

40. Y Closed Closed N/A N/A 035

(

S i

2/18/2010 Responder: Clark

41. Y Closed Closed RAI No. 1 ML102980005 TVA Letter dated 3/12/10 LIC-110 Section 6.2.2 states:

Design features and 036 7.5.2 7.5.1

(

C February 18, 2010 Date: 5/25/10 Responder: Clark

42. Y Closed Closed NRC Meeting Summary NNC: Unit 2 FSAR Section 7 5 1 Post Accident Monitoring 037 7.5.1.

1 7.5.2

(

M a

2/18/2010 Responder: Clark Date: 5/25/10

43. Y Closed Closed 09/16/10 N/A TVA Letter dated 10/5/10 FSAR Amendment 100 provides information 038 7.5.1.

1 7.5.2

(

M a

2/18/2010 Responder: Clark Date: 5/25/10

44. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 The slides presented at the December 15 2010 meeting 039

(

G January 13, 2010 Responder: Clark Date:

5/25/10

45. Y Closed Closed EICB RAI ML102910008 FSAR amendment 98 The equation for the calculation of the estimated average hot leg 040

(

G January 13, 2010 Responder: Clark Date:

5/25/10

46. Y Closed Closed EICB RAI EICB RAI FSAR amendment 98 The equation for the calculation of the power fraction on page 042 All All B

(

February 25, 2010: Telecom Date: 5/25/10 Responder: Clark

47. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 6/18/10 The drawing provided did not have the identification numbers 044 7.5.2 7.5.1

(

C February 25, 2010 Date: 5/25/10 Responder: Clark

48. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 6/18/10 045

(

C February 25, 2010 Date: 5/25/10 Responder: Clark

49. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 7/30/10 046

(

C February 25, 2010 Date: 5/25/10 Responder: Clark

50. Y Closed Closed N/A - Request for help finding N/A 047 7.5.2 7.5.1

(

C 4/8/2010 Responder: WEC/Hilmes Date: 5/25/10 51. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 7/30/10 048 7.5.2 7.5.1

(

C April 8, 2010 Date: 5/25/10 Responder: WEC

52. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 6/18/10 049 7.5.2 7.5.1

(

C 4/8/2010 Responder: WEC Date: 5/25/10

53. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 6/18/10 051

(

G April 15, 2010 Date: 5/25/10 Responder: Craig/Webb

54. Y Closed Closed N/A N/A Review addressed by another Open Item 052 7.5.2 7.5.1

(

S i

April 19, 2010 Date: 5/25/10 Responder: Slifer

55. Y Closed Closed RAI No. 12 ML102980005 053 7.5.2 7.5.1

(

S i

April 19, 2010 Date: 5/25/10 Responder: Slifer

56. Y Closed Closed RAI No. 13 ML102980005 056

(

S i

April 19, 2010 Date: 5/25/10 Responder: Slifer

57. Y Closed Closed RAI No. 16 ML102980005 TVA Letter dated 6/18/10 Sorrento Radiation Monitoring 057 7.5.2 7.5.1

(

S i

4/19/2010 Responder: TVA I&C Staff Date:

5/25/10

58. Y Closed Closed RAI No. 17 ML102980005 TVA Letter dated 6/18/10

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 058 7.5.0 7.5

(

S i

April 19, 2010 Date: 5/25/10 Responder: Slifer

59. Y Closed Closed RAI No. 18 ML102980005 TVA Letter dated 6/18/10 059 7.5.2 7.5.1

(

S i

April 19, 2010 Date:

Responder: Slifer

60. Y Closed Closed RAI No. 19 ML102980005 TVA Letter dated 6/18/10 060 7.5.2 7.5.1

(

C April 19, 2010 Date: 5/25/10 Responder: Clark

61. Y Closed Closed N/A N/A Addressed by Open Item No. 47 061 7.5.2 7.5.1

(

C April 19, 2010 Date: 5/25/10 Responder: Clark

62. Y Closed Closed N/A N/A Addressed by Open Item No. 48 062 7.5.2 7.5.1

(

C April 19, 2010 Date: 5/25/10 Responder: Clark

63. Y Closed Closed N/A N/A Addressed by Open Item No. 49 063 7.5.2 7.5.1

(

C April 19, 2010 Date: 5/25/10 Responder: Clark

64. Y Closed Closed N/A N/A Addressed by Open Item No. 50 064 7.5.2 7.5.1

(

C By letter dated March 12, 2010 TVA stated that the target submittal date for the D3 Analysis was April 2 Responder: Webb Date: 4/8/2010

65. Y Closed Closed N/A - No question was TVA Letter dated 10/5/10 066 7.5.2 7.5.1

(

C By letter dated March 12, 2010 TVA stated that the target submittal date for the "Watts Bar 2 PAMS Responder: WEC Date: 5/25/10

66. Y Closed Closed N/A - No question was TVA Letter dated 6/18/10 076 7.5.2 7.5.1

(

C By letter dated March 12, 2010 TVA stated that the target submittal date for the "Watts Bar 2 PAMS Responder: Clark Date: 5/25/10

67. Y Closed Closed N/A - No question was N/A 077 7.5.2 7.5.1

(

C By letter dated March 12, 2010 TVA stated that the target submittal date for seven other documents was Responder: WEC Date: 5/25/10

68. Y Closed Closed N/A - No question was TVA Letter dated 6/18/10 078

(

G 4/26/2010 Responder: Clark Date: 5/25/10

69. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 079

(

G 4/26/2010 Responder: Clark Date: 5/25/10 70. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 Reviewed under Item 154 080

(

S i

4/26/2010 Responder: WEC

71. Y Closed Closed RAI No. 2 ML102980005 TVA Letter dated 7/30/10 083 7.5.2 7.5.1

(

C May 6, 2010 Date: 6/18/10 Responder: WEC

72. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 7/30/10 084 7.5.2 7.5.1 B

(

C a

May 6, 2010 Date: 6/18/10 Responder: Clark

73. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 6/18/10 087 7.5.2 7.5.1

(

S i

May 6, 2010 Date: 5/24/10 Responder: Slifer

74. Y Closed Closed RAI No. 20 ML102980005 TVA Letter dated 6/18/10 088 7.5.2 7.5.1 B

(

S in May 6, 2010 Date: 5/24/10 Responder: Slifer

75. Y Closed Closed RAI No. 21 ML102980005 TVA Letter dated 6/18/10 089

(

C 5/6/2010 Responder: Clark

76. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 3/12/10 NNC: Docketed response states that the applicable FSAR 090

(

C 5/6/2010 Responder: Clark Date: 5/25/10

77. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 3/12/10 091 7.4 7.4

(

D a

May 20, 2010 Date: 5/25/10 Responder: Clark

78. Y Closed Closed EICB RAI No.1 ML102910017 TVA Letter dated 6/18/10 093

(

G May 20, 2010 Date: 5/25/10 Responder: Knuettel

79. Y Closed Closed N/A N/A Will be reviewed under item 154 094

(

G 5/20/2010 Responder: Clark Date: 5/25/10

80. Y Closed Closed N/A N/A Information was found in FSAR 095 7.8.1, 7 8 4 XX

(

D a

May 20, 2010 Date:

Responder:

81. Y Closed Closed EICB RAI No. 2 ML102910017 TVA Letter dated 7/30/10 096 7.7.5 XX

(

D a

5/20/2010 Responder:

82. Y Closed Closed EICB RAI No.3 ML102910017 TVA Letter dated 7/30/10 097 7.4.2 7.4

(

D a

May 20, 2010 Date:

Responder:

83. Y Closed Closed EICB RAI No.4 ML102910017 TVA Letter dated 7/30/10 098 7.4.2 7.4

(

D a

May 25, 2010 Date:

Responder:

84. Y Closed Closed EICB RAI No.5 ML102910017 TVA Letter dated 7/30/10 099 L

(

B April 12, 2010 Date:

Responder: WEC

85. Y Closed Closed Closed to Item 129 100

(

C 5/20/2010 Responder: WEC

86. Y Closed Closed N/A - No question was N/A 102

(

C May 24, 2010 Date: 5/24/10 Responder: WEC

87. Y Closed Closed N/A TVA Letter dated 6/18/10 Request for schedule not information

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 103 7.4 7.4

(

D a

5/27/2010 Responder: Ayala Date: 5/27/10

88. Y Closed Closed EICB RAI No.1 ML102910017 TVA Letter dated 10/29/10 Submittal date is based on current EDCR scheduled issue 104 7.4 7.4

(

D a

5/27/2010 Responder: Merten Date: 5/27/10

89. Y Closed Closed EICB RAI No.1 ML102910017 TVA Letter dated 10/29/10 Submittal date is based on current EDCR scheduled issue 105

(

G April 29, 2010 Date:

Responder: Langley

90. Y Closed Closed N/A N/A Will be reviewed under item 154.

106 B

(

S in May 6, 2010 Date: 5/25/10 Responder: Davies

91. Y Closed Closed RAI No. 9 ML102980005 TVA Letter dated 6/18/10 107 B

(

S in May 6, 2010 Date: 5/28/10 Responder: Clark

92. Y Closed Closed RAI No. 22 ML102980005 TVA Letter dated 6/18/10 108

(

G May 6, 2010 Date: 5/25/10 Responder: Webb/Hilmes

93. Y Closed Closed N/A N/A Will be reviewed under OI#154 109.

b

(

C 5/6/2010 Responder: N/A

94. Y Closed Closed N/A N/A Duplicate of another open Item.

109.

a 7.8 XX

(

D a

5/6/2010 Responder: N/A

95. Y Closed Closed N/A N/A 110

(

G May 6, 2010 Date:

Responder: Clark

96. Y Closed Closed N/A N/A Information was found.

111 B

(

C a

May 6, 2010 Date: 5/28/10 Responder: Clark

97. Y Closed Closed N/A TVA Letter dated 6/18/10 Request to help find, not a request for information 112 B

(

G a

June 1, 2010 Date:

Responder: Clark

98. Y Closed Closed N/A N/A Information was received 113

(

G 6/1/2010 Responder: Clark

99. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 6/18/10 114 7.2 7.2

(

G 6/1/2010 Responder: WEC 100. Y Close Closed EICB RAI ML102910008 TVA Letter dated 6/18/10 115

(

C 2/25/2010 Responder: Clark 101. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 6/18/10 116

(

G 6/3/2010 Responder: WEC 102. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 Letter sent to Westinghouse requesting the basis information 118 7.4 7.4

(

D a

6/8/2010 Responder: Merten 103. Y Closed Closed EICB RAI No.1 ML102910017 TVA Letter dated 10/29/10 Submittal date is based on current EDCR scheduled issue 119

(

S i

June 10, 2010 Date:

Responder:

104. Y Closed Closed RAI No. 23 ML102980005 TVA Letter dated 7/30/10 120

(

C 5/6/2010 Responder: Hilmes/Merten/Costley 105. Y Closed Closed EICB RAI ML102910002 TVA Letter dated 7/30/10 121

(

C 5/6/2010 Responder: Webb/Webber 106. Y Closed Closed EICB RAI ML102980066 TVA Letter dated 7/30/10 122

(

C June 14, 2010 Date:

Responder: WEC 107. Y Closed Closed N/A - Request for schedule not N/A 123 7.7.3 7.4.1, 9 3 4

(

D a

6/14/2010 Responder:

108. Y Closed Closed ML101720589, RAIs 21 and 22 TVA Letter dated 7/30/10 124 7.7.5 XX

(

D a

6/14/2010 Responder:

109. Y Closed Closed ML101720589, Item No 23 TVA Letter dated 7/30/10 125 7.7.8 7.7.1.

12

(

D a

6/14/2010 Responder:

110. Y Closed Closed ML101720589, Item No s 24 TVA Letter dated 7/30/10 126 7.8 7.8

(

D a

June 14, 2010 Date:

Responder:

111. Y Closed Closed ML101720589, Item No 26 TVA Letter dated 7/30/10 127 7.2 7.2

(

G 6/16/2010 Responder: WEC/Clark 112. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 6/18/10 128 7.2 7.2

(

G 6/18/2010 Responder: WEC Drake /TVA Craig 113. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/29/10 Track through SE open item 129

(

P o

6/12/2010 Responder: WEC 114. Y Closed Closed N/A TVA Letter dated 10/5/10 130

(

P o

6/28/2010 Responder: Clark 115. Y Closed Closed N/A TVA Letter dated 10/5/10 131

(

P o

6/28/2010 Responder: Clark 116. Y Closed Closed N/A TVA Letter dated 10/5/10

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 132

(

P o

6/28/2010 Responder: Clark 117. Y Closed Closed N/A TVA Letter dated 10/5/10 133

(

P o

6/28/2010 Responder: Clark 118. Y Closed Closed TVA Letter dated 10/5/10 134

(

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6/28/2010 Responder: Clark 119. Y Closed Closed TVA Letter dated 10/5/10 135 7.3.1 7.3.1

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6/30/2010 Responder: Clark 120. Y Closed Closed RAI not necessary TVA Letter dated 10/5/10 136 7.3.2, 7 4 7.4, 5 6

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6/30/2010 Responder: Clark 121. Y Closed Closed RAI not necessary TVA Letter dated 10/5/10 137

(

C Several WBN2 PAMS documents contain a table titled, Document Traceability & Compliance Responder: WEC 122. Y Closed Closed ML101650255, Item No 1 TVA Letter dated 10/5/10 139

(

C The WBN2 PAMS System Requirements Specification (WBN2 PAMS SysRS) contains a table (see page iii)

Responder: WEC 123. Y Closed Closed ML101650255, Item No 3 TVA Letter dated 10/5/10 WBN2 PAMS System Requirements Specification 141

(

C Deleted by DORL Date:

Responder:

124. Y Closed Closed ML101650255, Item No 5 WBN2 PAMS System Requirements Specification 146

(

C 6/17/2010 Responder:

125. Y Closed Closed ML101650255, Item No 10 PAMS System Requirements Specifications 147

(

C 6/17/2010 Responder:

126. Y Closed Closed ML101650255, Item No 11 PAMS System Requirements Specifications 148

(

C 6/17/2010 Responder:

127. Y Closed Closed ML101650255, Item No 12 PAMS System Requirements Specifications 149 7.2 7.2

(

G FSAR Section 7.1.1.2(2), Overtemperature delta T and Overpressure delta T equations have been simplified Responder: Tindell 128. Y Close Closed ML101720589, Item No 1 TVA Letter dated 10/5/10 150 7.2 7.2

(

G Many of the changes were based on the Westinghouse document N3-99-4003 Provide this Responder: Clark 129. Y Close Response provided in letter Closed ML101720589, Item No 2 TVA Letter dated 10/5/10 151 7.2 7.2

(

G Provide the EDCR 52378 and 54504 which discusses the basis for many changes to this FSAR section Responder: Clark 130. Y Close Closed ML101720589, Item No 3 TVA Letter dated 10/5/10 152 7.2 7.2

(

G Deleted portion of FSAR section 7.2.3.3.4 and moved to FSAR section 7 2 1 1 5 However the FSAR Responder: Merten/Clark 131. Y Close Closed ML101720589, Item No 4 TVA Letter dated 10/5/10 153 7.2 7.2

(

G FSAR section 7.2.1.1.7 added the reference to FSAR section 10 4 4 3 for exception to P-12 However Responder: Craig/Webb 132. Y Close Closed ML101720589, Item No 5 TVA Letter dated 10/21/10 155 7.2 7.2

(

G Summary of FSAR change document section 7.2 states that sections 7 2 1 1 9 and 7 2 2 2(4) are Date:

Responder: Stockton 133. Y Closed Closed ML101720589, Item No 7 157 7.2 7.2

(

G FSAR section 7.2.2.1.1, fifth paragraph was deleted except for the last sentence The last sentence states Responder: Tindell 134. Y Close Closed ML101720589, Item No 9 TVA Letter dated 10/5/10 158 7.2 7.2

(

G FSAR section 7.2.2.1.1, paragraph six was changed to state that the design meets the requirements of Responder: Tindell 135. Y Closed Closed ML101720589, Item No 10 TVA Letter dated 10/5/10 159 7.2 7.2

(

G FSAR section 7.2.2.1.2 discusses reactor coolant flow measurement by elbow taps However it further Responder: Craig 136. Y Close closed ML101720589, Item No 11 TVA Letter dated 10/5/10 160 7.2 7.2

(

G FSAR section 7.2.2.2(7) deleted text which has references 12 and 14 These references are not Responder: Tindell 137. Y Close Closed ML101720589, Item No 12 TVA Letter dated 10/5/10 161 7.2 7.2

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G FSAR section 7.2.2.3 states that changes to the control function description in this section are expected Responder: Clark 138. Y Closed Closed ML101720589, Item No 13 TVA Letter dated 10/5/10 162 7.2 7.2

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G FSAR section 7.2.2.2(14) states that bypass of a protection channel during testing is indicated by an Responder: Tindell 139. Y Closed Closed ML101720589, Item No 14 TVA Letter dated 10/5/10 163 7.2 7.2

(

G Deleted by DORL Date:

Responder:

140. Y Closed Closed ML101720589, Item No 15 164 7.2 7 5 1 7.2 a

r g

l FSAR section 7.2.2.2(20) has been revised to include the plant computer as a means to provide information Responder: Perkins 141. Y Closed Closed ML101720589, Item No 16 and TVA Letter dated 10/5/10 Item No. 8 sent to DORL 165 7.2 7.2

(

G FSAR section 7.2.2.3.2, last paragraph of this section has been deleted The basis for this deletion is that Responder: Clark 142. Y Closed Closed ML101720589, Item No 17 TVA Letter dated 10/5/10 166 7.2 7.2

(

G Changes to FSAR section 7.2.2.2(20) are justified based on the statement that the integrated computer Responder: Clark 143. Y Closed Closed ML101720589, Item No 18 TVA Letter dated 10/5/10 167 7.2 7.2

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G FSAR section 7.2.2.4, provide an analysis or reference to chapter 15 analysis which demonstrate that failure Responder: Clark 144. Y Close closed ML101720589, Item No 19 TVA Letter dated 10/5/10 168 7.2 7.2

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G FSAR table 7.2-4, item 9 deleted loss of offsite power to station auxiliaries (station blackout) based on the Responder: Clark 145. Y Close Response provided in letter Closed ML101720589, Item No 20 TVA Letter dated 10/5/10

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 169

(

G 6/18/2010 Responder: Clark 146. Y Closed Closed 170

(

G 6/17/2010 Responder: Clark 147. Y Closed Closed 171 7.2 7.2

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G 6/17/2010 Responder: Craig 148. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/21/10 Closed to SE Open Item 172

(

G 6/17/2010 Responder: Craig 149. Y Closed Closed EICB RAI ML102910008 173 7.1 7.1

(

G 6/17/2010 Responder: Craig/Webb/Powers 150. Y Closed Closed EICB RAI ML102910008 174

(

G 6/28/2010 Responder: Hilmes/Craig 151. Y Closed Closed EICB RAI ML102910008 175

(

G June 28, 2010 Responder:

152. Y Closed Closed EICB RAI ML102910008 176 7.1 7.1

(

G 6/28/2010 Responder: Craig/Webb 153. Y Closed Closed EICB RAI ML102910008 177 7.5.2.

1 7.5.1

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7/15/2010 Responder: Clark 154. Y Closed Closed N/A TVA Letter dated 10/5/10 RAI not required 178 7.5.2.

1 7.5.1

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7/15/2010 Responder: Clark 155. Y Closed Closed N/A TVA Letter dated 10/5/10 RAI not required 179

(

C An emphasis is placed on traceability in System Requirements Specifications in the SRP in the Responder: WEC 156. Y Closed Closed N/A - Closed to Item No 142 NA 180

(

C The SRP, BTP 7-14, Section B.3.3.1 states that Regulatory Guide 1 172 endorses with a few noted Responder: WEC 157. Y Closed Closed N/A - Closed to Item No 142 NA 181

(

C An emphasis is placed on traceability in System Requirements Specifications in the SRP in the Responder: WEC 158. Y Closed Closed N/A - Closed to Item No 142 NA 182

(

C Characteristics that the SRP states that a Software Requirements Specifications should have include Responder: WEC 159. Y Closed Closed N/A - Closed to Item No 142 NA 184

(

C 7/15/2010 Responder: WEC 160. Y Closed Closed N/A - Closed to Item No 142 N/A 186 7.7.8 7.7.1.

12

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7/15/2010 Responder: Perkins/Clark 161. Y Closed Closed EICB RAI No.6 ML102910017 TVA Letter dated 10/5/10 188

(

C By letter dated June 30, 2010, TVA docketed, Tennessee Valley Authority (TVA) Watts Bar Unit 2 Responder: Clark 162. Y Closed Closed ML101970033, Item No 3 & 4 TVA Letter dated 10/5/10 189 7.6.7

(

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7/20/2010 Responder: Clark 163. Y Closed Closed RAI No. 3 ML102980005 TVA Letter dated 10/5/10 190 7.9

(

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FSAR Table 7.1-1 states: Regulatory Guide 1.133, May 1981 Loose-Part Detection Program for the Responder: Clark 164. Y Closed Closed RAI No. 4 ML102980005 TVA Letter dated 10/5/10 Closed to OI-331.

191 7.9

(

C NUREG-0800 Chapter 7, Section 7.9, "Data Communication Systems" contains review criteria for Responder: Jimmie Perkins 165. Y Closed Closed ML10197016, Item Nos 1-3 TVA Letter dated 10/5/10 192 7.5.1.

1 7.5.2

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The NRC Staff is using SRP (NUREG-0800) Chapter 7 Section 7 5 Instrumentation Systems Important to Responder: Clark 166. Y Closed Closed Item No. 1 sent to DORL TVA Letter dated 10/5/10 EICB RAI ML1028618855 sent to DORL 193 7.5.1.

1 7.5.2

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The WBU2 FSAR, Section 7.5.2, Plant Computer System contains three subsections Responder: Clark 167. Y Closed Closed Item No. 2 sent to DORL TVA Letter dated 10/5/10 EICB RAI ML1028618855 sent to DORL 194 7.5.1.

1 1 7.5.2.

1

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The WBU2 FSAR Section 7.5.2.1, Safety Parameter Display System contains a description of the Safety Responder: Costley/Norman 168. Y Closed Closed Item No. 3 sent to DORL TVA Letter dated 10/5/10 EICB RAI ML1028618855 sent to DORL 195 7.5.1.

1 2 7.5.2.

2

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Bypassed and Inoperable Status Indication (BISI)

Responder: Costley/Norman 169. Y Closed Closed Item No. 4 sent to DORL TVA Letter dated 10/5/10 EICB RAI ML1028618855 sent to DORL 196 7.5.1.

1 2 7.5.2.

2

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Bypassed and Inoperable Status Indication (BISI)

Responder: Costley/Norman 170. Y Closed Closed Item No. 5 sent to DORL TVA Letter dated 10/5/10 EICB RAI ML1028618855 sent to DORL 197 X

Open Item 197 was never issued.

171. Y Closed Closed 198 7.5.1.

1 2 7.5.2.

2

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SRP Section 7.5, Subsection III, Review Procedures states: Recommended review emphasis for BISI Responder: Costley/Norman 172. Y Closed Closed Item No. 6 sent to DORL TVA Letter dated 10/5/10 EICB RAI ML1028618855 sent to DORL 199 7.5.1.

1 3 7.5.2.

3

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The WBU2 FSAR Section 7.5.2.3, Technical Support Center and Nuclear Data Links contains a description Responder: Costley/Norman 173. Y Closed Closed Item No. 7 sent to DORL TVA Letter dated 10/5/10 Related SE Section 7.5.5.3 EICB RAI ML1028618855 sent to 203 7.5.1.

1 7.5.2

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7/26/2010 Responder: Clark 174. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 204 7.5.1.

1 7.5.2

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7/26/2010 Responder: Costley/Norman 175. Y Closed Closed NRC to issue EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 205

(

G 7/26/2010 Responder: Clark 176. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 Question B related to prior NRC approval of this system or 50 59 206 7.5.1.

1 7.5.2

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7/27/2010 Responder: Clark 177. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 207

(

C July 27, 2010 Date:

Responder:

178. Y Closed Closed 208 7.5.2.

1 7.5.1

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7/27/2010 Responder: Clark 179. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 209 7.5.2.

1 7.5.1

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7/27/2010 Responder: Clark 180. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 210 7.5.2.

1 7.5.1

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7/27/2010 Responder: Clark 181. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 215

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7/29/2010 Responder: WEC 182. Y Closed Closed 216 7.5.1.

1 7.5.2

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7/29/2010 Responder: Clark 183. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 217

(

G 7/6/2010 Responder: Clark 184. Y Close Closed EICB RAI ML102910008 TVA Letter dated 7/30/10 218

(

G 7/6/2010 Responder: Clark 185. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 7/30/10 219

(

G 8/4/2010 Responder: TVA Licensing 186. Y Closed Closed EICB RAI ML102910008 220

(

G 8/4/2010 Responder: Ayala 187. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 221 7.7.1.

2 7.7.1.

3

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8/4/2010 Responder: Trelease 188. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 222

(

G 8/4/2010 Responder: Clark 189. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 223

(

G 8/4/2010 Responder: Clark 190. Y Closed Closed EICB RAI ML102910008 224 7.5.1.

1 7.5.2

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8/4/2010 Responder: Norman (TVA CEG) 191. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 225

(

G 8/4/2010 Responder: Scansen 192. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 226

(

C 8/4/2010 Responder: TVA Licensing 193. Y Closed Closed N/A -

Information TVA Letter dated 8/11/10 See also Open Item Nos. 41 &

270 227

(

G 8/4/2010 Responder: Clark 194. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 228

(

C 8/4/2010 Responder: Clark 195. Y Closed Closed EICB RAI ML102980066 TVA Letter dated 10/5/10 229

(

C 8/4/2010 Responder: Clark 196. Y Closed Closed EICB RAI ML102980066 TVA Letter dated 10/5/10 230

(

C 8/4/2010 Responder: Webb 197. Y Closed Closed EICB RAI ML102980066 TVA Letter dated 10/5/10 231

(

G 8/4/2010 Responder: Clark 198. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 232

(

S i

8/4/2010 Responder: Clark 199. Y Closed Closed RAI No. 5 ML102980005 TVA Letter dated 10/5/10 233

(

C 8/4/2010 Responder: Clark 200. Y Closed Closed EICB RAI ML102980066 TVA Letter dated 10/5/10 234

(

C 8/4/2010 Responder:

201. Y Closed Closed N/A - Duplicate Item N/A 235

(

G 8/4/2010 Responder: TVA Licensing 202. Y Closed Closed N/A N/A 236

(

G 8/4/2010 Responder: Clark 203. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/5/10

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 237

(

C 8/4/2010 Responder: Clark 204. Y Closed Closed EICB RAI ML102980066 TVA Letter dated 10/5/10 238

(

C 8/4/2010 Responder: Webb/Hilmes 205. Y Closed Closed N/A - Duplicate Item N/A 239

(

C 8/4/2010 Responder: Hilmes 206. Y Closed Closed N/A - Meeting request N/A 240

(

G 8/4/2010 Responder: Clark 207. Y Close Closed Ml102910008 Item#29 TVA Letter dated 10/5/10 241

(

S i

8/4/2010 Responder: Davies 208. Y Closed Closed RAI No. 10 ML102980005 TVA Letter dated 10/5/10 242

(

G 8/4/2010 Responder: Hilmes 209. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/5/10 243

(

C 8/3/2010 Responder: WEC 210. Y Closed Closed N/A - Closed to Item No 142 N/A 249

(

C 8/8/2010 Responder: WEC 211. Y Closed Closed LIC-101 Rev. 3 Appendix B Section 4 "Safety Evaluation" 253

(

C 8/8/2010 Responder: Clark 212. Y Closed Closed TVA Letter dated 10/5/10 Related to Open Item no. 83.

254

(

C 8/10/2010 Responder: WEC 213. Y Closed Closed N/A - Request to make TVA Letter dated 10/21/10 255

(

C 8/10/2010 Responder: WEC 214. Y Closed Closed N/A - Request to make TVA Letter dated 10/21/10 256

(

C 8/10/2010 Responder: WEC 215. Y Closed Closed N/A - Request to make TVA Letter dated 10/21/10 257

(

C 8/10/2010 Responder: WEC 216. Y Closed Closed N/A - Request to make N/A 258

(

C 8/10/2010 Responder: WEC 217. Y Closed Closed N/A - Request to make N/A 259

(

C 8/10/2010 Responder: WEC 218. Y Closed Closed N/A - Request to make TVA Letter dated 10/21/10 260

(

C 8/10/2010 Responder: WEC 219. Y Closed Closed N/A - Request to make N/A 261

(

C 8/10/2010 Responder: WEC 220. Y Closed Closed N/A - Closed to Item No 142 TVA Letter dated 8/20/10 LIC-110 Rev. 1 Section 6.2.2 states: "Design features and 262

(

C 8/10/2010 Responder: WEC 221. Y Closed Closed N/A - Request to make N/A 263

(

C 8/11/2010 Based on an examination of document available at the Responder: WEC 222. Y Closed Closed ML101650255, Item No 2 264

(

C 8/11/2010 Responder: WEC 223. Y Closed Closed ML101650255, Item No 2 265

(

C 8/11/2010 Responder: WEC 224. Y Closed Closed ML101650255, Item No 2 269

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8/20/2010 Responder: NRC 225. Y Closed Closed N/A N/A 270

(

C 8/23/2010 Responder: Clark 226. Y Closed Closed See also Open Item Nod. 41 &

245 271

(

C 8/23/2010 Responder: WEC 227. Y Closed Closed N/A - Closed to Item No 142 NA 272 7.5.2.

1 7.5.1

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8/26/2010 Responder: Clark 228. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/21/10 EICB RAI ML102861885 sent to DORL 273 7.5.2.

1 7.5.1

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8/26/2010 Responder: Clark 229. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/5/10 EICB RAI ML102861885 sent to DORL 274.

a 7.5.2.

1 7.5.1

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8/26/2010 Responder: Clark 230. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/21/10 EICB RAI ML102861885 sent to DORL 275

(

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8/27/2010 Responder: Clark 231. Y Closed Closed Not Required Answer exists in N/A 277 7.6 7.6.3

(

G 8/27/2010 Responder: Clark 232. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/29/10

Agenda for Weekly Telecom with TVA (I&C Chapter 7 only) radBA627.docx Open Items to be Resolved for SER Approval No.

SE Sec.

FSAR Sec.

NRC POC Issue TVA Response(s)

Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 278 7.6 7.6.6

(

G 8/27/2010 Responder: Trelease 233. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/21/10 279 7.6 7.6.6

(

G 8/27/2010 Responder: Mather 234. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/21/10 280 7.6 7.6.6

(

G 8/27/2010 Responder: Trelease 235. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/21/10 282 7.6 7.6.9

(

G 8/27/2010 Responder: Trelease 236. Y Close Response is acceptable Closed EICB RAI ML102910008 TVA Letter dated 10/21/10 283 7.7.5 XX

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8/27/2010 Responder: Clark 237. Y Closed Closed EICB RAI No.13 ML102910017 TVA Letter dated 10/29/10 This item is a follow-up question to item 96 284 7.7.3 7.4.1

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8/27/2010 Responder: Webber 238. Y Closed Closed EICB RAI No.14 ML102910017 TVA Letter dated 10/21/10 This item is a follow-up question to item 123 285 7.3.3 7.3

(

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8/27/2010 Responder: McNeil 239. Y Closed Closed EICB RAI No.15 ML102910017 TVA Letter dated 10/29/10 This item is a follow-up question to item 22 286 7.7.3 9.3.4.

2 4

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8/27/2010 Responder: Webber 240. Y Closed Closed EICB RAI No.16 ML102910017 TVA Letter dated 10/21/10 290 7.7

(

C 9/7/2010 Responder: Clark 241. Y Closed Closed N/A N/A This item is a duplicate of item 291 292 7.2.5 7.2

(

G 9/7/2010 Responder: Craig 242. Y Closed Closed EICB RAI ML102910008 TVA Letter dated 10/21/10 293 7.7.4 7.2.2.

3 5

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9/8/2010 Responder: Craig 243. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/29/10 EICB RAI ML102861885 sent to DORL 299

(

C Provide Common Q Software Requirements Specification Post Accident Monitoring System 00000- 1 of the 10/5 letter contains the Common Q Software Requirements Specification 244. Y Closed Closed TVA Letter dated 10/5/10 302 7.5.2.

1 7.5.1

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09/17/2010 Responder: Tindell 245. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/29/10 EICB RAI ML102861885 sent to DORL 303 7.5.2.

1 7.5.1

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09/17/2010 Responder: Tindell 246. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/29/10 EICB RAI ML102861885 sent to DORL 304 7.5.2.

1 7.5.1

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09/17/2010 Responder: Tindell 247. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/29/10 EICB RAI ML102861885 sent to DORL 305 7.5.2.

1 7.5.1

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09/17/2010 Responder: Tindell 248. Y Closed Closed EICB RAI ML102861885 TVA Letter dated 10/29/10 EICB RAI ML102861885 sent to DORL 312 7.0

(

G By letter dated September 10,2010, TVA provided the summary evaluation of 50 59 reports which were Responder: Stockton 249. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/21/10 313 7.7.8 7.7.1.

12

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EDCR 52408 (installation of AMSAC in Unit 2) states that Design Criteria WB-DC-40-57 needs to be Responder: Ayala 250. Y Closed Closed EICB RAI No.18 ML102910017 TVA Letter dated 10/29/10 314 7.3 7.3

(

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The following 50.59 changes were listed in the March 12 RAI response letter (item 10) but were not included Responder: Stockton 251. Y Closed Closed EICB RAI No.

19 TVA Letter dated 10/21/10 Related to OI 10 315 7.5.3 7.5.3

(

G IE Bulletin 79-27 required that emergency operating procedures to be used by control room operators to Responder: S. Smith (TVA Operations) 252. Y Close Closed EICB RAI ML102910008 TVA Letter dated 10/21/10 316 7.5.2.

3 7.5

(

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TVA has provided various documents in support of RM-1000 high range monitors for WBN2 Responder: Temples/Mather 253. Y Closed Closed RAI No. 26 ML102980005 317 7.5.2.

3 7.5

(

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TVA has provided a proprietary and a non-proprietary version of Technical Manual for RM-1000 Digital Responder: Temples 254. Y Closed Closed RAI No. 27 ML102980005 TVA Letter dated 10/29/10 320 E

I Per Westinghouse letter WBT-D-2340, TENNESSEE VALLEY AUTHORITY WATTS BAR NUCLEAR Responder: Clark 255. Y Closed Closed N/A N/A Duplicate of item 156 321 E

I For the purposes of measuring reactor coolant flow for Reactor Protection functions elbow taps are used for Responder: Clark 256. Y Closed Closed N/A N/A Duplicate of OI# 157 322 7.7.1.

11

(

C Section 7.7.1.11 will be added to FSAR Amendment 101 to provide a discussion of the Distributed Control Responder: Clark 257. Y Closed Closed 324

(

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Per the NRC reviewer, the BISI calculation is not required to be submitted 258. Y Closed Closed 325 B

(

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The Unit 2 loops in service for Unit 1 that are scheduled to be transferred to the Foxboro Spec 200 Responder: TVA Startup Olson 259. Y Closed Closed Closed to open item ?

332 7.5.2.

1 7.5.1

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M a

10/26/2010 260. Y Closed Closed ML103000105 Item No 1 TBD EICB RAI ML103000105 sent to DORL 333 7.5.2.

1 7.5.1

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10/27/2010 261. Y Closed Closed ML103000105 Item No 2 TBD EICB RAI ML103000105 sent to DORL

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9/2/2010 Responder: Faulkner 262. Y Closed Closed -

Response

RAI No. 24 ML102980005 TVA Letter dated 10/21/10 054 7.5.2 7.5.1

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4/19/2010 Responder: Slifer/Clark Date: 5/25/10 263. Y Closed Closed-Response acceptable RAI No. 14 ML102980005 TVA Letter dated 6/18/10 055 7.5.2 7.5.1

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4/19/2010 Responder: Slifer/Clark Date: 5/25/10 264. Y Closed Closed-Response acceptable RAI No. 15 ML102980005 TVA Letter dated 6/18/10 319 7.5.2.

3 7.5

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TVA provided System Verification Test Results 04507007-1TR (July 1999) for Sequoyah to support Responder: Temples 265. Y Closed Closed-Response Acceptable RAI No. 29 ML102980005 TVA Letter dated 10/29/10 328 7.5.2.

3 7.5

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Provide the model number for the four containment high range area monitors RM-1000 and identify how Responder: Temples 266. Y Closed Closed-Response Acceptable RAI No. 30 ML102980005 TVA Letter dated 10/29/10 050 7.5.2 7.5.1 EICB (Carte) 4/8/2010 How should the "shall" statements outside of the bracketed requirements in Common Q requirements documents be interpreted?

Responder: WEC Date: 5/25/10 These sections are descriptive text and not requirements. The next revision of the Watts Bar Unit 2 PAMS System Requirements Specification will remove shall from the wording in those sections. A date for completing the next revision of the System Requirements Specification will be provided no later than August 31, 2010.

The System Requirements Specification will be revised by September 30, 2010 and submitted within two of receipt from Westinghouse.

TVA Revised Response Shall statements within the scope of the System Requirements Specification (SysRS) and System Design Specification (SysDS) were reviewed by Westinghouse. The statements were either relocated to the numbered requirements section or the wording was changed to identify that it was not a requirement. This item is resolved by submittal of revision 2 of the SysRS and the SysDS (attachments 7 and 8 of TVA Letter to NRC dated 10/25/10).

1. Y Open TVA response is inconsistent (e.g., WNA-DS-01667-WBT Rev. 1 page 1-1, Section 1.3.1 implies that "SysRS Section ###" has requirements. See also SDS4.4.2.1-1 on page 4-32).

Is there a requirement on the shall referenced above??

Response is provided in letter dated 10/29/10.

TVA Revised Response in TVA Letter dated 10/29/10 Item No. 1 is Acceptable Open-NRC Awaiting DORL to Issue EICB RAI and TVA to respond to RAI formally.

EICB RAI ML102910002 Item No. 8 TVA Letter dated 6/18/10 TVA Letter dated 10/29/10 Item No. 1 043 7.5.2 7.5.1 EICB (Carte) 2/19/2010 The PAMS ISG6 compliance matrix supplied as to TVA letter dated February 5, 2010 is a first draft of the information needed. The shortcomings of the first three lines in the matrix are:

Line 1: Section 11 of the Common Q topical report did include a commercial grade dedication program, but this program was not approved in the associated SE.

Westinghouse stated that this was the program and it could now be reviewed. The NRC stated that TVA should identified what they believe was previously reviewed and approved.

Line 2: TVA stated the D3 analysis was not applicable to PAMS, but provided no justification. The NRC asked for justification since SRP Chapter 7.5 identified SRM to SECV-93-087 Item II.Q as being SRP acceptance criteria for PAMS.

Responder: WEC Date: 5/25/10 The PAMS ISG6 compliance matrix supplied as to TVA letter dated February 5, 2010 is a first draft of the information needed.

By letter dated April 8, 2010 TVA provided the PAMS Licensing Technical Report provided additional information.

contains the revised Common Q PAMS ISG-6 Compliance Matrix, dated June 11, 2010, that addresses these items (Reference 13).

By letter Dated June 18, 2010 (see Attachment 3)

TVA provided a table, "Watts Bar 2 - Common Q PAMS ISG-6 Compliance Matrix."

It is TVAs understanding that this comment is focused on the fact that there are documents that NRC has requested that are currently listed as

2. N Open Response is included in letter dated 10/5/10.

Revised compliance matrix is unacceptable.

NNC 8/12/10: It is not quite enough to provide all of the documents requested.

There are two possible routs to review that the NRC can undertake: (1) follow ISG6, and (2) follow the CQ SPM.

The TVA response that was originally pursued was to follow ISG6, but some of the compliance items for ISG6 were addressed by referencing the SPM. The Open-NRC Review Due 12/1/10 EICB RAI ML102910002 Item No. 2 TVA Letter dated 2/5/10 TVA Letter dated 5/12/10 TVA Letter dated 6/18/10 TVA Letter dated 10/5/10 NNC 8/25/10: A CQ PAMS ISG6 compliance matrix was docketed on: (1) February, 5 12010, (2)

March 12, 2010, & (3) June 18, 2010. The staff has expressed issued with all of these compliance evaluations. The staff is still waiting for a good compliance evaluation.

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Date Comments Line 3: TVA identified that the Design report for computer integrity was completed as part of the common Q topical report. The NRC noted that this report is applicable for a system in a plant, and the CQ topical report did no specifically address this PAMS system at Watts Bar Unit 2.

NRC then concluded that TVA should go through and provide a more complete and thorough compliance matrix.

being available for audit at the Westinghouse offices. For those Common Q PAMS documents that are TVA deliverable documents from Westinghouse, TVA has agreed to provide those to NRC. Westinghouse documents that are not deliverable to TVA will be available for audit as stated above. Requirements Traceability Matrix issues will be tracked under NRC RAI Matrix Items 142 (Software Requirements Specification) and 145 (System Design Specification).

Commercial Item Dedication issues will be tracked under NRC RAI Matrix Item 138. This item is considered closed.

NRC approved the CQ TR and associated SPM; it may be more appropriate to review the WBN2 PAMS application to for adherence to the SPM that to ISG6. In either path chosen, the applicant should provide documents and a justification for the acceptability of any deviation from the path chosen. For example, it appears that the Westinghouse's CDIs are commercial grade dedication plans, but Westinghouse maintains that they are commercial grade dedication reports; this apparent deviation should be justified or explained.

065 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the FMEA was August 31, 2010.

Responder: WEC Date: 5/25/10 7 to letter dated 10/5/10 contains the proprietary version of the Common Q PAMS FMEA and the affidavit for withholding. A non-proprietary version will be provided at a later date.

3. N Open Open-NRC Review Due 12/1/10 N/A - No question was asked. Item was opened to track comm8ittment made by applicant.

TVA Letter dated 10/5/10 101 DORL (Poole) 4/12/2010 The non-proprietary versions of the following RM-1000, Containment High Range Post Accident Radiation Monitor documents will be provided by June 30, 2010.

1. V&V Report 04508006A

2. System Description 04508100-1TM

3. Qualification Reports 04508905-QR, 04508905-1 SP, 04508905-2SP, 04508905-3SP

4. Functional Testing Report 04507007-1TR Responder: Slifer The documents, and affidavits for withholding for the listed documents were submitted to the NRC on TVA letter to the NRC dated July 15, 2010.

4. Y Open Documents provided in letter dated 07/15/10 Open-NRC Review Due 10/14/10 Confirm receipt.

N/A TVA is working with the vendor to meet the 6/30 date, however there is the potential this will slip to 7/14.

144 EICB (Carte)

The WBN2 PAMS Software Requirements Specification (WBN2 PAMS SRS) contains a table (see page iii) titled, Document Traceability &

Compliance, which states that the WBN2 PAMS SRS was created to support the three documents identified (two of these documents have been provided on the docket).

(a) Please describe the third document (i.e., NABU-DP-00014-GEN Revision 2, Design Process for Common Q Safety Systems).

(b) Please describe the flow of information between Responder: WEC (a) The purpose of NABU-DP-00014-GEN document is to define the process for system level design, software design and implementation, and hardware design and implementation for Common Q safety system development. This document supplements the Common Q SPM, WCAP-16096-NP-A. The scope of NABU-DP-00014-GEN includes the design and implementation processes for the application development. For a fuller description of the design process described in NABU-DP-00014-GEN please refer to the

5. N Open Response provided in letter dated 10/5/10 NRC Review and WEC to complete response.

b-d to be addressed at public meeting and audit.

Will require information to be docketed.

Open-NRC Review Due 12/1/10 Responses to items a and e provided. Need response to b-d.

ML101650255, Item No. 8 TVA Letter dated 10/5/10 WBN2 PAMS Software Requirements Specification By letter dated April 8, 2010 (ML10101050203), TVA docketed WNA-SD-00239-WBT, Revision 1, "RRAS Watts Bar 2 NSSS Completion Program I&C Projects, Software Requirements Specification for the Post Accident Monitoring System, dated February 2010 (ML101050202).

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Date Comments these three documents.

(c) Does the PAMS SRS implement the requirements in these three documents?

(d) Please describe if and how these three documents are used in the development of the PAMS Software Design Description.

(e) Do the WBN2 V&V activities include verification that the requirements of these three documents have been incorporated into the WBN2 PAMS SRS.

Design Process for AP1000 Common Q Safety Systems, WCAP-15927 on the AP1000 docket.

Since this is a Westinghouse process document that is not specifically referenced in the SRS, it will be removed in the next revision of the document.

(b) - Closed to items 142 and 145 (c) - Closed 142 (d) - Closed to Item 142 (e) WBN2 PAMS Software Requirements Specification (WNA-SD-00239-WBT, Rev. 1) refers to Document Traceability & Compliance table on page iii. This table has three entries; Design Process for Common Q Safety Systems (NABU-DP-00014-GEN, Rev. 2), RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System - System Requirements Specification (WNA-DS-01617-WBT, Rev. 1), and RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System - System Design Specification (WNA-DS-01667-WBT, Rev. 1).

IV&V performed a Requirements Traceability Assessment during which it reviewed Software Requirements Specification (WBN2 PAMS SRS, WNA-SD-00239-WBT, Rev. 1) against System Requirements Specification (WNA-DS-01617-WBT, Rev. 1) and System Design Specification (WNA-DS-01667-WBT, Rev. 1). Requirements within Software Requirements Specification that are referring to NABU-DP-00014-GEN, Rev 2, Design Process for Common Q Safety Systems, have also been reviewed for traceability and compliance. During IV&V's RTA effort the anomaly reports V&V-769 and V&V-770 have been initiated and reported in the IV&V Phase Summary Report for the System Definition Phase, WNA-VR-00283-WBT, Rev. 0.

IV&V has verified that the requirements in SRS are derived from the specified documents listed in the Document Traceability and Compliance Table of WBN2 PAMS SRS.

(d) N/A -

Closed to Item No. 142 183 EICB (Carte) 7/15/2010 An emphasis is placed on traceability in System Requirements Specifications in the SRP, in the unmodified IEEE std 830-1993, and even more so given the modifications to the standard listed in Regulatory Guide 1.172, which breaks with typical NRC use of the word should to say Each identifiable requirement in an SRS must be traceable backwards to the system requirements and the design bases or regulatory requirements that is satisfies Responder: WEC The generic Software Requirements Specification applies except as modified by the WBN Unit 2 System Requirements Specification.

6. Y Open Response provided in letter dated 10/21/10 Open-NRC Review Due 12/1/10 NRC to issue RAI EICB RAI ML102980066 Item No. 9 TVA Letter dated 10/21/10 Item No. 4

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Date Comments On page 1-2 of the Post Accident Monitoring Systems Software Requirements Specification in the background section, is the sentence Those sections of the above references that require modification from the generic PAMS are defined in the document referring purely to the changes from WNA-DS-01617-WBT Post Accident Monitoring System-System Requirements Specification or is it saying that there are additional changes beyond those and that the SRS defines them?

If there are additional changes, what is their origin?

200 7.2 7.3 7.5 7.7 EICB (Carte) 7/21/2010 Amendment 99 of the Watts Bar Unit 2 FSAR Section 7.5, Instrumentation Systems Important to Safety, does not include any description of instrumentation for normal operation; therefore, Section 7.5 of the FSAR does not support statements made in the SER Section 7.5; compare SER (ML072060490) Section 7.5.1 and FSAR Amendment 99 Section 7.5. Please identify where, in the docketed material, information exists to support the statements in the SER Section 7.5.1.

Responder: Clark The statement in SER Section 7.5.1 is supported by the following:

I&C Systems for Normal Operation FSAR Section Eagle 21 7.2 Neutron Monitoring 7.2 Foxboro Spec 200 7.3 (List of other sections in attachment 34)

Foxboro I/A 7.7.11 (new section will be added by amendment 101) (other sections have been previously provided)

Plant Computer 7.5.2 Rod Control 7.7.1.2 CERPI 7.7.1.2 Control Rod Drive 7.7.1.1 Incore Neutron Monitoring 7.7.1.9 Lose Part Detection/Monitoring 7.6.7 Vibration Monitoring RCP 5.5.1.2 Control Boards 7.1.1.10 RVLIS 7.5, 5.6

7. Y Open Response provided in letter dated 10/5/10 Open-NRC Review Amendment 101 Submitted 10/29/10.

EICB RAI ML102980066 Item No. 2 TVA Letter dated 10/5/10 201 7.7.1.

1.1 7.7.11 EICB (Carte) 7/21/2010 Amendment 99, FSAR Section 7.7.1.1.1, "Reactor Control Input Signals (Unit 2 Only)," contains a description of functions performed uniquely for Unit 2.

Please describe the equipment that performs this function (in sufficient detail to support a regulatory evaluation), and evaluate this equipment against the appropriate regulatory criteria.

Responder: Webb These functions are within the scope of the Foxboro I/A system. Section 7.7.11 will be added to the FSAR in amendment 101 to provide a discussion of the DCS.

8. Y Open Response provided in letter dated 10/5/10 Open-NRC Review Amendment 101 Submitted 10/29/10.

EICB RAI ML102980066 Item No. 3 TVA Letter dated 10/5/10 211 7.5.1.

1 7.5.2 7.6.1 EICB (Carte) 7/27/2010 FSA Table 7.1-1 shows: "The extent to which the recommendations of the applicable NRC regulatory Responder: Clark The WBN 2 FSAR Section 7.5 defines the following systems as important to safety

9. N Open Response included in letter dated 10/5/10 Open-NRC Review Amendment 101 EICB RAI ML102980066 Item No. 5 TVA Letter dated 10/5/10 Relates to SE Sections:

7.5.5, Plant Computer 7.6.10, Loose Part Monitoring 7.7.1, Control System

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Date Comments 7.7.1 7.7.2 7.7.4 7.9 guides and IEEE standards are followed for the Class 1E instrumentation and control systems is shown below. The symbol (F) indicates full compliance. Those which are not fully implemented are discussed in the referenced sections of the FSAR and in the footnotes as indicated."

Please describe how systems that are important to safety, but not 1E, comply with 10 CFR 50.55a(a)1:

"Structures, systems, and components must be designed, fabricated, erected, constructed, tested, and inspected to quality standards commensurate with the importance of the safety function to be performed."

1. Post Accident Monitoring including:

a. Common Q Post Accident Monitoring System (Safety-Related)

i. Reactor Vessel Level ii. Core Exit Thermocouples iii. Subcooling Margin Monitor

b. Eagle 21 indications (Safety-Related)

c. Foxboro Spec 200 indications (Safety-Related)

d. Neutron Monitoring (Source and Intermediate Range) (Safety-Related)

e. Radiation Monitors (Safety-Related)

f. Unit 1 and Common shared indications (Safety-Related)

g. Foxboro I/A indications (Non-Safety-Related)

h. Radiation Monitors (Non-Safety-Related)

i. CERPI (Non-Safety-Related)

j. Integrated Computer System (Non-Safety-Related)

k. Unit 1 and Common shared indications (Non-Safety-Related)

Post Accident Monitoring Instrumentation Design Criteria, WB-DC-30-7, Rev. 22, Appendix A provides the minimum quality requirements for each Category (1, 2 or 3) of variable. By definition, no Category 1 variable can be non-safety-related. Therefore, non-safety-related variables and the source equipment are limited to category 2 or 3. Since some variables are designated as having more than 1 category, the requirements of the highest category apply.

Additional design criteria information for specific systems is contained in:

g. Foxboro I/A - Site-Specific Engineering Specification WBN Unit 2 NSSS and BOP Controls Upgrade Specification Rev. 1 (Attachment 23)

h. CERPI - Rod Control System Description, N3-85-4003, Rev. 12 Section 2.2, Design Requirements

i. Radiation Monitors - Design Criteria Document WB-DC-40-24, Radiation Monitoring - (Unit 1 /

Unit 2), Rev. 21

j. Integrated Computer System - Design Criteria Document WB-DC-30-29 Plant Integrated Computer System (ICS), Rev. 8 (Submitted under TVA to NRC letter dated August __, 2010)

2. Plant Computer (Integrated Computer System)

- See Item j above.

The WBN 2 FSAR Section 7.6, defines the following non-safety-related systems as other systems required for safety

1. Foxboro I/A - While not specifically described, functions performed by the system are described Submitted 10/29/10.

Description 7.7.2, Safety System Status Monitoring System 7.7.4, PZR & SG Overfill 7.9, Data Communications

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Date Comments in this section. The qualify requirements are described above.

2. Lose Part Monitoring System - Design Criteria Document WB-DC-30-31, Loose Parts Monitoring System, Rev. 4, provides the quality requirements for this system. A description of the distributed control system will be added as FSAR section 7.7.1.11 in FSAR Amendment 101.

Installation is performed in accordance with the quality requirements of either the Bechtel or TVA work order processes based on the quality classification of the equipment being installed.

Vendor testing is performed in accordance with procurement specification requirements which are based on the type and quality classification of the equipment. Preoperational testing is performed in accordance with Chapter 14 of the FSAR.

213 7.5.2 EICB (Carte) 7/27/2010 By letter dated June 18, 2010 (ML101940236) TVA stated (Enclosure 1, Attachment 3, Item No. 3) that the PAMS system design specification and software requirements specification contain information to address the "Theory of Operation Description." The staff has reviewed these documents, and it is not clear how this is the case. The docketed material does not appear to contain the design basis information that is required to evaluate compliance with the Clause of IEEE 603.

(1) Please provide the design basis (as described in IEEE 604 Clause 4) of the Common Q PAMS.

(2) Please provide a regulatory evaluation of how the PAMs complies with the applicable regulatory requirements for the theory of operation.

For example: Regarding IEEE 603 Clause 5.8.4 (1)

What are the manually controlled protective actions?

(2) How do the documents identified demonstrate compliance with this clause?

Responder: WEC Conformance with IEEE 603 is documented in the revised Common Q PAMS Licensing Technical Report and the Common Q PAMS System Design Specification.

contains the proprietary version of Westinghouse document Tennessee Valley Authority (TVA), Watts Bar Unit 2 (WBN2), Post-Accident Monitoring System (PAMS), Licensing Technical Report, Revision 1, WNA-LI-00058-WBT-P, Dated October 2010 contains the proprietary version of Westinghouse document Nuclear Automation Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System -

System Design Specification, WNA-DS-01667-WBT, Rev. 2 dated September 2010.

10. N Open Response is included in letter dated 10/25/10 NNC to review and revise this question after LTR R1is received.

Open-NRC Review Due 12/31/10 EICB RAI ML102980066 Item No. 18 214 EICB (Carte) 7/27/2010 By letter dated June 18, 2010 (ML101940236) TVA stated (Enclosure 1, Attachment 3, Item No. 10) that the approved Common Q Topical Report contains information to address the "Safety Analysis." The Common Q SPM however states that a Preliminary Hazards Analysis Report and the V&V reports document the software hazards analysis. Please Provide these documents.

Responder: WEC According to "The Software Program Manual for Common Q Systems," WCAP-16096-NP-1A, the Software Safety Plan only applies to Protection class software and PAMS is classified as Important-to-safety. Exhibit 4-1 of the SPM shows that PAMS is classified as Important-to-Safety

11. N Open Response provided in letter dated 10/5/10 WEC References Common Q PAMS preliminary hazards analysis is referenced in the SRS.

WEC to delete.

Open-NRC Review Due 12/1/10 EICB RAI ML102980066 Item No. 11 TVA Letter dated 10/5/10 244 EICB (Carte) 8/3/2010 Section 8.2.2 of the Common Q SPM (ML050350234) states that the Software Requirements Specification (SRS) shall be developed using IEEE 830 and RE 1.172. Clause 4.8, "Embedding project requirements in the SRS," of the IEEE 830 states that an SRS should address the software product, not the process Responder: WEC The process related requirements have been removed from revision 2 of the Software Requirements Specification (SRS).

of letter dated 10/25/10 contains the proprietary version of Westinghouse document

12. N Open Response is provided in letter dated 10/25/10.

Open-NRC Review Due 10/22/10 EICB RAI ML102980066 Item No. 14 LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

LIC-101 Rev. 3 states: "The safety analysis that supports the

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Date Comments of producing the software. In addition Section 4.3.2.1 of the SPM states "Any alternatives to the SPM processes or additional project specific information for the...SCMP...shall be specified in the PQP.

Contrary to these two statements in the SPM, the WBN2 PAMS SRS (ML101050202) contains many process related requirements, for example all seventeen requirements in Section 2.3.2, "Configuration Control," address process requirements for configuration control.

Please explain how the above meets the intent of the approved SPM.

Nuclear Automation, Watts Bar 2 NSSS Completion Program, I&C Projects, Software Requirements Specification for the Post Accident Monitoring System, WNA-SD-00239-WBT, Revision 2, Dated September 2010.

change requested should include technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

246 EICB (Carte) 8/3/2010 Section 4.3.2.1, "Initiation Phase" of the Common Q SPM (ML050350234) requires that a Project Quality Plan (PQP) be developed. Many other section of the SPM identify that this PQP should contain information required by ISG6. Please provide the PQP. If "PQP" is not the name of the documentation produced, please describe the documentation produced and provide the information that the SPM states should be in the PQP.

Responder: WEC As agreed ISG6 does not apply to the Common Q PAMS platform. The information required to address this question concerning the PQP and SPM has been added to compliance matrix in revision 1 of the Licensing Technical Report.

of letter dated 10/25/10 contains the proprietary version of Westinghouse document Tennessee Valley Authority (TVA), Watts Bar Unit 2 (WBN2), Post-Accident Monitoring System (PAMS), Licensing Technical Report, Revision 1, WNA-LI-00058-WBT-P, Dated October 2010

13. N Open Response is provided in letter dated 10/25/10 Open-NRC Review Due 10/22/10 EICB RAI ML102980066 Item No. 15 LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

LIC-101 Rev. 3 states: "The safety analysis that supports the change requested should include technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

247 EICB (Carte) 8/8/2010 As part of the Common Q topical report development effort, Westinghouse developed the Software Program Manual for Common Q Systems (ML050350234) to address software planning documentation. The NRC reviewed the SPM and concluded: the SPM specifies plans that will provide a quality software life cycle process, and that these plans commit to documentation of life cycle activities that will permit the staff or others to evaluate the quality of the design features upon which the safety determination will be based. The staff will review the Implementation of the life cycle process and the software life cycle process design outputs for specific applications on a plant-specific basis. Please identify the implementation documentation produced as a result of following the SPM, and state what information will be docketed.

Responder: WEC The implementation documents required by the SPM are identified in the compliance matrix in revision 1 of the Licensing Technical Report.

of letter dated 10/25/10 contains the proprietary version of Westinghouse document Tennessee Valley Authority (TVA), Watts Bar Unit 2 (WBN2), Post-Accident Monitoring System (PAMS), Licensing Technical Report, Revision 1, WNA-LI-00058-WBT-P, Dated October 2010

14. N Open Response is provided in letter dated 10/25/10 Open-NRC Review Due 10/22/10.

EICB RAI ML102980066 Item No. 16 LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

LIC-101 Rev. 3 states: "The safety analysis that supports the change requested should include technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

248 EICB (Carte) 8/8/2010 As part of the Common Q topical report development effort, Westinghouse developed the Software Program Manual for Common Q Systems (ML050350234) to address software planning documentation. The NRC reviewed the SPM and concluded: the SPM specifies plans that will provide a quality software life cycle process, and that these plans commit to Responder: WEC The documents are identified in the compliance matrix in revision 1 of the Licensing Technical Report of the letter dated 10/25/10 contains the proprietary version of Westinghouse document Tennessee Valley Authority (TVA),

15. N Open Response is provided in letter dated 10/25/10 Open-NRC Review Due 10/22/10.

LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

LIC-101 Rev. 3 states: "The safety analysis that supports the change requested should include

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Date Comments documentation of life cycle activities that will permit the staff or others to evaluate the quality of the design features upon which the safety determination will be based. The staff will review the Implementation of the life cycle process and the software life cycle process design outputs for specific applications on a plant-specific basis. Please identify the design outputs produced as a result of following the SPM, and state when what information will be docketed.

Watts Bar Unit 2 (WBN2), Post-Accident Monitoring System (PAMS), Licensing Technical Report, Revision 1, WNA-LI-00058-WBT-P, Dated October 2010 technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

266 EICB (Carte) 8/11/2010 Please provide a high level description of the Foxboro IA equipment used at WBN2. This description should be more detailed than a brochure on the product line (or available on the web), and less detailed than a technical manual on each field replaceable unit. It is expected that such literature already exists.

Responder: Webb/Webber FSAR section 7.7.1.11 will be added in Amendment 101. In discussions with the NRC reviewer on October 4, 2010 it was agreed that the new FSAR section along with previously submitted documents should be sufficient to address this request. The NRC reviewer will notify TVA if additional documentation is required.

16. Y Open Response provided in letter dated 10/21/10 Open-NRC Review Amendment 101 Submitted 10/29/10.

TVA Letter dated 10/21/10 Item No. 9 267 EICB (Carte) 8/11/2010 By letter dated June 18, 2010 (ML101940236) TVA stated that the software safety plan (SSP) was not applicable to PAMS applications (see Watts Bar 2 -

Common Q PAMS ISG-6 Compliance matrix Item No.

10); however, reference No. 30 of the SRS (ML101050202) is: 00000-ICE-37727, Rev. 0, "Post Accident Monitoring System Software Preliminary Hazard Analysis for the Common Q PAMS Project." A Preliminary Hazard Analysis is required by the SSP.

Please explain.

Responder: WEC This is addressed in the Licensing Technical Report, Revision 1, WNA-LI-00058-WBT-P.

of the letter dated 10/25/10 contains the Proprietary version of Westinghouses document titled: Tennessee Valley Authority (TVA), Watts Bar Unit 2 (WBN2),

Post-Accident Monitoring System (PAMS),

Licensing Technical Report, Revision 1, WNA-LI-00058-WBT-P, Dated October 2010

17. N Open Response provided in letter dated 10/25/10 Open-NRC Review Due 10/22/10 291 7.7 EICB (Carte) 9/7/2010 The equation at the bottom of Amendment 100 page 7.7-3 is wrong. There are two ways that this equation is inconsistent with the text above it.

Responder: Clark The errors in the terms within the equation for total rod speed error [TE] will be corrected in FSAR Amendment 101 as shown below:

1 1

1 1 1

1

18. Y Open Response provided in letter dated 10/21/10 Open-NRC Review Amendment 101 Submitted 10/29/10.

TVA Letter dated 10/21/10 Item No. 21 092 DORL (Poole) 5/20/2010 TVA to review Licensee Open Item list and determine which items are proprietary.

Responder: Hilmes This item will close when we are no longer using this document as a communications tool.

19. N Open Open-TVA Continuous review as items are added 287 7.3 7.3-1 EICB (Darbali) 8/27/2010 In Amendment 95 of FSAR section 7.3.2.3 Further Considerations, the list of signals that would start the auxiliary feedwater motor driven and turbine driven pumps was moved to table 7.3-1 item 3, Auxiliary Feedwater. However, item (6) AMSAC was not included in table 7.3-1.

Please explain this omission or state your commitment to correct this in a future amendment.

Responder: Elton Unit 2 FSAR Section 7.3 addresses Engineered Safety Features (ESF) Actuation System.

AMSAC is non-safety, and thus non-ESF.

Therefore, it was correct to not include AMSAC when the initiating signals were relocated from Unit 2 FSAR Section 7.3.2.3 to Table 7.3-1.

20. Y Open Response included in next TVA Licensing Formal RAI Response Letter.

Open-TVA Due 10/31/10.

Waiting for docketed version to close item.

Expected letter issue date is 11/5/10 ML102390538, Item No. 1, 9/10/10 and EICB RAI No.17 ML102910017, 10/19/10

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Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments 294 7.3 7.3.1.

1.1 EICB (Darbali) 9/9/2010 In Amendment 95 of FSAR section 7.3.1.1.1 Function Initiation, item (13) was arranged into paragraph form from what used to be a listing of items (a), (b) and (c).

The second bullet under item (c) was omitted in the new paragraph.

Initiates Phase B containment isolation of the following:

Closure of the main steam isolation valves (MSIV) to limit reactor coolant system cooldown for breaks downstream of the MSIVs.

Please explain this omission or state your commitment to correct this in a future amendment.

Responder: Elton The information provided in Unit 2 FSAR Section 7.3.1.1 is not meant to describe the specific function of each item in detail; the descriptions provided are a summary listing. The omitted information provided information beyond the level of detail provided for the other items in this section.

The level of detail contained in item (13) of Unit 2 FSAR Section 7.3.1.1 is consistent with that contained in item 13. of Unit 1 UFSAR Section 7.3.1.1.

21. Y Open Response included in next TVA Licensing Formal RAI Response Letter.

Open-TVA Due 10/31/10.

Waiting for docketed version to close item.

Expected letter issue date is 11/5/10 ML102390538, Item No. 2, 9/10/10 295 7.3 7.3.1.

1.2 EICB (Darbali) 9/9/2010 In Amendment 95 of FSAR section 7.3.1.1.2 Process Protection Circuitry, item (3), references to sections 7.6 and 7.7 were removed.

Please explain the reason for removal.

Responder: Elton The level of detail is sufficient for this section without the two removed references to other Sections.

The level of detail contained in item (3) of Unit 2 FSAR Section 7.3.1.1.2 is consistent with that contained in item 3. of Unit 1 UFSAR Section 7.3.1.1.2.

22. Y Open Response included in next TVA Licensing Formal RAI Response Letter.

Open-TVA Due 10/31/10.

Waiting for docketed version to close item.

Expected letter issue date is 11/5/10 ML102390538, Item No. 3, 9/10/10 296 7.3 7.3.1.

2.1 EICB (Darbali) 9/9/2010 In Amendment 95 of FSAR section 7.3.1.2.1 Generating Station Conditions, the new paragraph was arranged from what used to be a listing of items (1.b), (1.c), and (2.b), leaving out items (1.a) and (2.a).

Even if the paragraph contains the word include, the breaks in items (1.a) and (2.a) should be listed.

Please explain this omission or state your commitment to correct this in a future amendment.

Responder: Elton The information provided in Unit 2 FSAR Section 7.3.1.2.1 is not meant to provide detailed information describing what each condition includes. Deletion of the breaks described in Items (1.a) and (2.a) is justified because they are encompassed by the operating conditions primary system breaks and secondary system breaks, respectively.

The level of detail contained in Unit 2 FSAR Section 7.3.1.2.1 is consistent with that contained in Unit 1 UFSAR Section 7.3.1.2.1.

23. Y Open Response included in next TVA Licensing Formal RAI Response Letter.

Open-TVA Due 10/31/10.

Waiting for docketed version to close item.

Expected letter issue date is 11/5/10 ML102390538, Item No. 4, 9/10/10 297 7.3 7.3.1.

2.2 EICB (Darbali) 9/9/2010 In Amendment 95 of FSAR section 7.3.1.2.2 Generating Station Variables, the following sentence was erased:

Post accident monitoring requirements and variables are given in Tables 7.5-1 and 7.5-2.

Please explain the reason for removal.

Responder: Elton Unit 2 FSAR Section 7.3 addresses Engineered Safety Features (ESF) Actuation System. Post accident monitoring is not an ESF; thus, a reference to it is not required in 7.3.1.2.2.

24. Y Open Response included in next TVA Licensing Formal RAI Response Letter.

Open-TVA Due 10/31/10.

Waiting for docketed version to close item.

Expected letter issue date is 11/5/10 ML102390538, Item No. 5, 9/10/10 298 7.3 XX EICB (Darbali) 9/9/2010 IE Bulletin 80-06 calls for review of engineered safety features with the objective of ensuring that no device will change position solely because of the reset action.

Responder: Clark A review of the schematic diagrams for the WBN Unit 2 valves listed in SER 3 found the following:

25. Y Open Response included in next TVA Licensing Formal RAI Response Letter.

Open-TVA Due 10/31/10.

Waiting for docketed version to close item.

ML102390538, Item No. 6, 9/10/10

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Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments In Supplement 3 of NUREG-0847, section 7.3.5, the staff approved the design modifications proposed by the applicant that would allow certain devices to remain unchanged upon an ESF reset. The staff also found acceptable the applicants justification for some safety-related equipment that does not remain in its emergency mode after an ESF reset.

Please confirm whether or not the equipment that was determined in NUREG-0847 and its supplements to remain unchanged upon an ESF reset will still remain unchanged in Unit 2.

(1) For feedwater isolation valves (FCV-3-33, FCV-3-47, FCV-3-87, and FCV-3-100),

feedwater check valve bypass valves (FCV-3-185, FCV-3-186, FCV-3-187, and FCV 188), and upper tap main feedwater isolation valves (FCV 3-236, FCV-3-239, FCV-3-242, and FCV-3-245), the Unit 2 equivalent reset switch and a relay have been added for each steam generator loop.

When the engineered safety feature (ESF) signal is reset, the individual valve will not change state until both the loop and the ESF train reset switches have been reset.

(2) For steam generator blowdown isolation valves (FCV-43-54D, FCV-43-56D, FCV-43-59D, FCV-43-63D, FCV-43-55, FCV 58, FCV-43-61, and FCV-43-64), the ESF signal is sealed in by means of a seal in relay. The individual valve will not change state until a hand switch in the sample room is used to reopen the individual valve.

(3) For residual heat removal heat exchanger outlet flow control valves (FCV-74-16 and FCV-74-28), the ESF signal is sealed in by the limit switch. The Unit 2 equivalent reset switch has been added at the control room control board. When the ESF signal is reset, the individual valve will not change state until the individual reset switch has been reset.

Expected letter issue date is 11/5/10 334 7

7 EICB (Darbal i)

FSAR Figure 7A-3 Mechanical Flow and Control Diagram Symbols doesnt show the symbols for the first column of valves. Please correct this in a future FSAR amendment.

Responder: Stockton

26. Y Open Figure will be corrected in FSAR Amendment 102.

Open-TVA Due TBD RAI not required.

N/A RAI not required because the figure is not part of any SE section.

323 EICB(Garg)

WCAP-13869 revision 1 was previously reviewed under WBN Unit 1 SER SSER 13 (Reference 8). Unit 2 references revision 2. An analysis of the differences and their acceptability will be submitted to the NRC by November 15, 2010 Responder: Hilmes/Unit 1 2 contains the WCAP 13869 Revision 1 to Revision 2 Change Analysis.

27. Y Open Response is included in letter dated 10/29/10 The staff is confused with the response since both units have reference leg not insulated Rev 2 should apply to Unit 1 also and there should be no difference between Unit 1 and 2 Open-TVA Unit 1 TVA Letter dated 10/29/10 Item No. 36 117 7.1 7.1 EICB (Garg) 6/3/2010 Does TVA use a single sided or double sided methodology for as-found and as-left instrument setpoint values. (RIS2006-7)

Responder: Hilmes Reactor Protection System (RPS) (comprised of Reactor Trip (RPS) and Engineered Safety Features Actuation System (ESFAS)) setpoint values are monitored by periodic performance of surveillance tests in accordance with Technical Specification requirements. TVA uses double-sided as-found and as-left tolerances for Reactor

28. Y Open Revised response is included in letter dated 10/29/10 Open-TVA/A102 Pending FSAR Amendment 102 submittal Due 10/31/10 TVA needs to EICB RAI ML102910008 Item#21 TVA Letter dated 10/29/10 Item No. 7

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Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments Trip and ESFAS trip setpoint surveillance tests as described in FSAR amendment 100.

TVA Revised Response:

For TSTF-493 parameters WBN Unit 2 uses only double sided correction factors. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

address that trip setpoint and allowable value uncertainties are not reduced by the reduction factor for the single sided reduction factor.

TVA response not acceptable. TVA need to clarify if single sided methodology has been used in calculating trip setpoint and allowable value and if it is used then provide justifications.

154 7.2 7.2 EICB (Garg)

FSAR section 7.2.1.1.10, setpoints: NRC staff has issued RIS 2006-17 to provide guidance to the industry regarding the instrument setpoint methodology which complies with 10 CFR 50.36 requirements. Provide the information on how the WBN2 setpoint methodology meets the guidance of RIS 2006-17 and include this discussion in this section. Also, by letter dated May 13, 2010, TVA provided Rev. 7 of EEB-TI-28 to the staff. The staff noted that section 4.3.3.6 of EEB-TI-28 discusses the correction for setpoints with a single side of interest. It should be noted that the staff has not approved this aspect of setpoint methodology for Unit 1. The staff finds this reduction in uncertainties is not justified unless it can be demonstrated that the 95/95 criteria is met. Therefore, either remove this reduction factor for single sided uncertainties or justify how you meet the 95/95 criteria given in RG 1.105.

Responder: Craig/Webb (Q1) Refer to the response to letter item 13, RAI Matrix Item 51.

(Q2) EEB-TI-28's single sided methodology conforms with WBN's design basis commitment to ensure that 95% of the analyzed population is covered by the calculated tolerance limits as defined in NRC Reg Guide 1.105, Revision 2, 1986 that was in affect during WBN Unit 1 licensing. The single sided methodology is not used for any TSTF-493 setpoints that use TI-28 methodology.

TVA Revised Response:

In order to respond to other NRC comments on the setpoint methodology discussion in FSAR Amendment 100, TVA reviewed the previous response to this RAI. This resulted in a complete rewrite of the responses to this question as shown below. As a result, the response does not specifically address the NRC Follow-up Request.

However, the overall responses to all of the NRC RAIs on setpoint methodology addresses this item.

(Q1)

WBN 2 implementation of TSTF-493, Rev. 4, Option A includes addition of a discussion of the WBN setpoint methodology in FSAR section 7.1.2.1.9.

(Q2)

Electrical Engineering Branch (EEB)

29. Y Open Response is not acceptable.

A revised response will be submitted in the letter dated 10/29/10.

Open-TVA/A102 Pending FSAR Amendment 102 submittal.

FSAR AMD 100.

Since all the setpoint and allowable value for Unit 2 is calculated and added to TS, TVA needs to address the latest criteria and that include 95/95 criteria.

Why the last sentence has been modified by adding TI-28. It was NRCs understanding that all setpoints have to meet TI-28 ML101720589, Item No. 6 and EICB RAI ML102861885 Item No. 8 TVA Letter dated 10/5/10 TVA Letter dated 10/29/10 Item No. 13 EICB RAI ML102861885 sent to DORL

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Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments Technical Instruction (TI) 28, Setpoint Calculations, single-sided methodology conforms to WBN's design basis commitment to ensure that 95% of the analyzed population is covered by the calculated tolerance limits as defined in NRC Reg Guide 1.105, Revision 2, 1986, which was in effect during WBN Unit 1 licensing. Single-sided multipliers are not used for any TSTF-493 setpoints.

There are some areas where a 95%

confidence level could not be achieved.

Some examples would be harsh environment instrumentation where only 2 or 3 devices were tested in the 10CFR50.49 program. In these situations, the Confidence is referred to as high..

306 7.1 7.1 EICB (Garg)

FSAR amendment 100, page 7.1-12 provides the definition of Allowable value which is not consistent with TSTF-493 as allowable value is the value beyond which instrument channel is declared inoperable.

Responder: Hilmes The FSAR Allowable Value definition will be revised to be consistent with the TSTF-493 in FSAR Amendment 102. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

30. Y Open Response is included in letter dated 10/29/10 Open-TVA/A102 Due 10/31/10 Pending FSAR Amendment 102 submittal EICB RAI ML102910008 Item#69 TVA Letter dated 10/29/10 Item No. 26 307 7.1 7.1 EICB (Garg)

(1) FSAR amendment 100, Section 7.1, page 7.1-12, definition of Acceptable as found tolerance is not in accordance with TSTF-493 as AAF is the limit beyond which the instrument channel is degraded but may be operable and its operability must be evaluated. (2)

Also it states that AAF is based on measurable instrument channel uncertainties, such as drift, expected during the surveillance interval. These wording should be revised to agree with the wording given in RIS2006-17 as these wordings are very vague. (3) Also it states that RPS functions use double sided tolerance limits for the AAF. Since AAF is a band it will always be double sided and therefore, this clarification does not mean anything and it clouds the issue.

Responder: Hilmes (1) The Acceptable As Found (AAF) definition will be revised to be consistent with TSTF-493 in FSAR Amendment 102. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

(2) Additional detail on the AAF methodology was provided in sections 7.1.2.1.9.1, Westinghouse Setpoint Methodology, and 7.1.2.1.9.2, TVA Setpoint Methodology.

These sections will be revised to clarify the AAF calculations in FSAR Amendment 102. contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

(3) The statement about double sided limits addresses a TSTF requirement that the AAF tolerance consider errors in both the conservative and non-conservative directions and ensures that an as-found value which exceeds these limits, even in the conservative direction (away from the safety limit), will be evaluated. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

31. Y Open Response is included in letter dated 10/29/10 Open-TVA/A102 Due 10/31/10 Pending FSAR Amendment 102 submittal EICB RAI ML102910008 Item#70 TVA Letter dated 10/29/10 Item No. 27 308 7.1 7.1

(

G (1) FSAR Amendment 100, Section 7.1, page 7.1-13, Responder: Hilmes

32. Y Open Open-TVA/A102 EICB RAI TVA Letter

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Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments definition of Acceptable as left tolerance is not in accordance with TSTF-493 as it states that this may take calibration history into consideration. This is very vague and ambiguous. (2) Also it states that RPS functions use double sided tolerance limits. Since ALF is a band it will always be double sided and therefore, this clarification does not mean anything and clouds the issue.

(1) The statement about using calibration history to determine the Acceptable As Left (AAL) will be deleted in FSAR Amendment 102. contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

(2) See response to letter item 27 (NRC Matrix Item 307).

Response is included in letter dated 10/29/10 Due 10/31/10 Pending FSAR Amendment 102 submittal ML102910008 Item#71 dated 10/29/10 Item No. 28 309 7.1 7.1.2.

1.9.1 EICB (Garg)

(1) FSAR amendment 100, Page 7.1-14, Westinghouse setpoint methodology, states that AAF is the algebraic sum of the.. This is not acceptable.

As algebraic sum is non conservative compared to the SRSS method and will mask the operability of the instrument channel and therefore, it is not acceptable to the staff. (2) It also make the statement that ALT may take calibration history into consideration which is vague and ambiguous.

Responder: Hilmes (1) The AAF calculation for Westinghouse setpoint methodology calculations in TI-28 for TSTF-493 will be revised to use the Square Root Sum of the Squares (SRSS) method.

(2) AAF definition will be revised to be consistent with TSTF-493 as discussed with the NRC Staff, in FSAR Amendment 102. Attachment 3 contains the revised FSAR Amendment 102 Change Markup that reflects this change.

33. Y Open Response is included in letter dated 10/29/10 Open-TVA/A102 Due 10/31/10 Pending FSAR Amendment 102 submittal EICB RAI ML102910008 Item#72 TVA Letter dated 10/29/10 Item No. 29 310 7.1 7.1.2.

1.9.2 EICB (Garg)

(1) FSAR amendment 100, Page 7.1-14, TVA setpoint methodology, states that for AAF.and other measurable uncertainties as appropriate (i.e., those present during calibration.) should be changed to present during normal operation (2) Also on page 7.1-15, states that ALT may take calibration history into consideration which is vague and ambiguous.

Responder: Hilmes TVA Response:

(1) The AAF definition will be revised in FSAR Amendment 102 to read:

A tolerance band on either side of the NTSP which defines the limits of acceptable instrument performance, beyond which the channel may be considered degraded and must be evaluated for operability prior to returning it to service. Channels which exceed the AAF will be entered into the Corrective Action Program for further evaluation and trending. The Acceptable As Found tolerance is the SRSS combination of drift, maintenance and test equipment (M&TE) accuracy and readability, and calibration/reference accuracy. Other uncertainties may be included in the AAF if applicable.

This revision eliminates the concern regarding uncertainties. Attachment 3 contained in the October 29, 2010 letter provided the revised FSAR Section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

(2) The AAL definition will be revised in FSAR Amendment 102 to read:

A tolerance band on either side of the NTSP within which an instrument or instrument loop is left after calibration or setpoint verification.

34. Y Open Response is included in letter dated 10/29/10 Open-TVA/A102 Due 10/31/10 Pending FSAR Amendment 102 submittal EICB RAI ML102910008 Item#73 TVA Letter dated 10/29/10 Item No. 30

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Response

Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments The Acceptable As Left tolerance is equal to or less than the SRSS combination of reference accuracy, M&TE accuracy and M&TE readability. Other uncertainties may be included in the AAL if applicable.

This revision eliminates the concern regarding calibration history. Attachment 3 contained in the October 29, 2010 letter provided the revised FSAR Section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

311 7.1 7.1 EICB (Garg)

Both Westinghouse and TVA setpoint methodology do not have any discussion on single sided calculation.

Please confirm that single sided calculation has not been used for all setpoints with TSTF-493 and provide a statement to that effect in the FSAR.

Responder: Hilmes A statement that single-sided corrections are not used for TSTF-493 setpoints will be included in FSAR Amendment 102. Attachment 3 contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

35. Y Open Response is included in letter dated 10/29/10 Open-TVA/A102 Due 10/31/10 Pending FSAR Amendment 102 submittal EICB RAI ML102910008 Item#74 TVA Letter dated 10/29/10 Item No. 31 326 EICB(Garg)

TVA uses double-sided methodology for as-found and as-left Reactor Trip and ESFAS instrument setpoint values. The FSAR will be revised in a future amendment to reflect this methodology Responder: Webb contains the revised FSAR section 7.1.2.1.9 that will be included in FSAR Amendment 102 that reflects this change.

36. Y Open October 22, 2010 Response is included in letter dated 10/29/10 Open-TVA/A102 Due 10/31/10 Pending FSAR Amendment 102 submittal TVA Letter dated 10/29/10 Item No. 37 329 7.6.1 7.6.7 EICB (Singh)

Section 7.6.7 of the FSAR (Amendment 100) states that, The DMIMS-DX' audio and visual alarm capability will remain functional after an Operating Basis Earthquake (OBE). All of the DMIMS-DX' components are qualified for structural integrity during a Safe Shutdown Earthquake (SSE) and will not mechanically impact any safety-related equipment.

TVA to clarify the seismic qualification of the loose parts monitoring system and include the appropriate information in Table 3.10 (or another suitable section) of the FSAR.

Responder: Clark The title of FSAR Section 3.10 is Seismic Design of Category I Instrumentation and Electrical Equipment. Since the Loose Part Monitoring System is not a Category 1 system, it is not included in the scope of 3.10. FSAR Section 7.6.7, Loose Parts Monitoring System (LPMS)

System Description, identifies basic system seismic design criteria which are consistent with the requirements of TVA Design Criteria, WB-DC-30-31, Loose Parts Monitoring System. As identified in FSAR Table 7.1-1, Watts Bar Nuclear Plant NRC Regulatory Guide Conformance, the system conforms to Reg. Guide 1.133 as modified by Note 12. Reg. Guide 1.133 identifies the seismic requirements and Note 12 does not contain any exception to the Regulatory Guide seismic requirements.

The Westinghouse LPMS seismic report, EQ-QR-33-WBT, Revision 0, Seismic Evaluation of the Digital Metal Impact Monitoring System (DMIMS-DXTM) for Watts Bar Unit 2, will be added as Reference 7 to FSAR section 7.6 in amendment 102.

37. N Open Response is included in letter dated 10/29/10 Open-TVA/A102 Pending FSAR Amendment 102 submittal.

Due 10/31/10 TVA to confirm that the equipment has been seismically qualified as required and that TVA reviewed and found the report acceptable.

TVA response does not list the seismic test document and its acceptance by TVA. FSAR should reference the test document as the source document for tracking conformance.

RAI No. 1 ML102980005 10/26/2010 TVA Letter dated 10/29/10 Item No. 39

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Date Comments 156 7.2 7.2 EICB (Garg)

FSAR section 7.2.2.1.1 states that dashed lines in Figure 15.1-1designed to prevent exceeding 121% of power.The value of 121% is changed from 118%. The justification for this change states that this was done to bring the text of this section in agreement with section 4.3.2.2.5, 4.4.2.2.6 and table 4.1-1. However, Table 4.1-1 and section 4.3.2.2.5 still show this value as 118%. Justify the change.

Responder: WEC Per Westinghouse letter WBT-D-2340, TENNESSEE VALLEY AUTHORITY WATTS BAR NUCLEAR PLANT UNIT 2 FSAR Markups Units I and 2 118% vs. 121 % and Correction to RAI Response SNPB 4.3.2-7, (Reference 17) the 118% value should be 121%. Depending on the use in the FSAR either 118% or 121% are the correct values. As a result of the question, Westinghouse reviewed all locations where either 118% or 121% are used and the context of use and provided a FSAR markup to reflect the correct value at the specific location. These changes will be incorporated in a future FSAR amendment.

38. N Open Response is included in letter dated 10/5/10 Open-TVA/Bechtel Amendment 101 Submitted 10/29/10.

TVA needs to justify why some places 121% is used and other places 118% is used. What does 121% or 118%

means.

ML101720589, Item No. 8 TVA Letter dated 10/5/10 Response on hold pending Westinghouse review.

274.

b EICB (Singh) 8/26/2010 Loose Parts Monitoring System: TR 3.3 refers to section 4.4.6 of the FSAR for description of the loose parts monitoring system. However, this section of the FSAR is not available. TVA to check the reference and respond.

Responder: Clark The reference will be changed to FSAR section 7.6.7 Loose Part Monitoring System (LPMS)

System Description in next revision of the Technical Requirements Manual as shown below:

1. Watts Bar FSAR, Section 7.6.7, Lose Part Monitoring System.

(Note: Bechtel I&C to submit TRM change package to TVA Licensing.)

39. Y Open Response provided in letter dated 10/21/10 Open-TVA/Bechtel Pending TRM amendment submittal.

Response

acceptable. TVA to complete stated action.

Due 10/31/10 RAI No. 6 ML102980005 10/26/2010 TVA Letter dated 10/21/10 Item No. 12 276 7.6 7.6 EICB (Garg) 8/27/2010 In order for the staff to review the effects of multi control systems failure, provide the summary of the analyses documenting the effect on the plant based on the following events: (1) loss of power to all control systems powered by a single power supply; (2) failure of each instrument sensor which provides signal to two or more control systems; (3) Break of any sensor impulse line which is used for sensors providing signals to two or more control systems; and (4) failure of digital system based on the common cause software failure affecting two or more control systems. For each of these events, confirm that the consequences of these events will not be outside chapter 15 analyses or beyond the capability of operators or safety systems.

Responder: Webb The NRC reviewer confirmed this question applies to non-safety systems.

The Distributed Control System (DCS) implemented using Foxboro I/A hardware, replaces most of the non-safety related control systems for WBN Unit 2. The other non-safety-related control systems within the scope of this question are:

a. Rod Control - Failures of this system are addressed in FSAR Chapter 15.

b. Main Turbine Electro-Hydraulic Control System The following provides the requested summaries for the four events listed:

(1) The (DCS) segmentation analysis submitted on TVA letter to NRC dated August 11, 2010, (Reference 7) demonstrates that the loss of any single power source does not result in a loss of any DCS function. The other systems within the scope of this

40. N Open Response provided in letter dated 10/21/10 Open-TVA/Bechtel TVA to Docket in 10/20 letter TVA to provide justification for non-safety system other than DCS.

The statement that failure of sense line where more than one transmitter is connected would be bounded by the failure of a single transmitter does not make sense.

TVA needs to make a statement that all non-safety EICB RAI ML102910008 Item#60 TVA Letter dated 10/21/10 Item No. 13

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Date Comments question are configured in the same manner as Unit 1, with redundant power sources such that the failure of a single power source does not cause a loss of function.

(2) Signals shared by more than one control function within the DCS are addressed in the DCS segmentation analysis submitted on TVA letter to NRC dated August 11, 2010, (Reference 7) which demonstrates that the loss of a single signal does not cause a failure of any critical control function. The impact of a loss of signal to the other systems within the scope of this question is bounded by the loss of that signal to the individual system and has the same effect as for Unit 1.

(3) Where feasible, the Unit 2 design includes separate sense lines for redundant transmitters, thereby eliminating multiple single point failures which are present in Unit

1. A review of the transmitter sense line database was performed to identify multiple sensors on a single sense line that had control functions (transmitters and switches). provides the results of the review and an analysis of the functions impacted by a sense line failure.

There are no transmitters on shared sense lines, such that a sense line failure would impact any combination of the DCS, Rod Control or Main Turbine Electro-Hydraulic Control Systems.

(4) Limiting DCS failures were addressed in the segmentation analysis, supplemented by Fault Handling in the I/A Series System, Revision 1, submitted on TVA letter to NRC dated October 5, 2010, Attachment 42 (Reference 1). The other systems within the scope of this question are analog and therefore this question is not applicable.

All non-safety control systems have been evaluated against these criteria and TVA has determined that their failure does not have consequences which will put the plant outside chapter 15 analyses.

control systems have been evaluated against these criteria and have determined that their failure does not have consequences which will put the plant outside chapter 15 analyses.

281 7.6 7.6.8 EICB (Garg) 8/27/2010 For FSAR Section 7.6.8 in amendment 96, redline version has completely rewritten this section of the FSAR, however, the staff is not able to determine any changes made to the section. Explain what changes have been made to this FSAR Section.

Responder: Webb contains the WBN Unit 2 FSAR markup for Section 7.6.8, Interlocks for RCS Pressure Control During Low Temperature Operation, showing what was changed between Amendments 95 and 96.

41. N Open Response provided in letter dated 10/29/10 Open-TVA/Bechtel Provide the basis for the changes.

Look at Foxboro I/A impact.

EICB RAI ML102910008 Item#65 TVA Letter dated 10/29/10 Item No. 16 288 7.3

(

G 9/2/2010 Responder: McNeil

42. Y Open Open-EICB RAI

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Date Comments Can we add a section to chapter 7 giving a brief overview of the Foxboro Spec 200 in Section 7.3?

TVA Response:

Reg. Guide 1.209, Guidelines for Environmental Qualification of Safety-Related Computer-Based Instrumentation and Control Systems in Nuclear Power Plants, is not applicable to the analog Foxboro Spec 200 hardware.

The following new section and reference will be added to the WBN Unit 2 FSAR as part of Amendment 102:

7.3.1.1.3 Analog Instrumentation The miscellaneous safety-related analog process control and indication loops are made up of discrete analog modules that have been tested and qualified for use in safety related systems.

The various components have been qualified to IEEE Standard 323-1983 (R-1996) IEEE Standard for Qualifying Class IE Equipment for Nuclear Power Generating Stations, IEEE Standard 344-1987 (R-1993) IEEE Standard Recommended Practices for Seismic Qualification of Class IE Equipment for Nuclear Power Generating Stations, and IEEE Standard 384-1984 (R-1992) IEEE Standard Criteria for Independence of Class IE Equipment and Circuits. The modules are arranged in instrument loops to provide the safety functions listed below:

Turbine driven AFW Pump Flow Control Motor driven AFW pump differential pressure indication and recirculation valve control Steam generator AFW flow and level indication and control Containment Pressure indication Upper and Lower Compartment Containment Ambient Temperature indication RHR Heat Exchanger CCS Supply Header Flow Sample Heat Exchanger Header CCS Differential Flow ERCW Strainer Differential Pressure, Backwash and Flush Control CCS Heat Exchanger B Inlet Pressure CCS Surge Tank Level Control CCS Heat Exchanger B Outlet Temperature Reactor Vessel Head Vent Throttle Manual Loading Station (Unit 2 Only)

EGTS Annulus Differential Pressure Control TVA committed to adding a description of the Foxboro Spec 200 hardware at the 10/12 NRC Public Meeting.

TVA/Bechtel Due TBD TVA should include the list of all the functions where Spec 200 is used and discuss differences between unit 1 and unit2. This discussion should also include loop which are currently used for Unit 1 operation If Spec 200 components have also been qualified to RG 1.209, it should be stated and if not why not.

ML102910008 Item#67

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Date Comments The components are physically arranged in the racks to meet the requirements of IEEE-279 and Watts Bar Design Criteria WB-DC-30-4, Separation/Isolation. (Unit 2 Only) Two IE analog modules are used to isolate IE to Non-IE signals.

These are the Contact Output Isolator and Voltage-to-Current Converter, both of which have the Input and Output signals isolated.

EMI testing and acceptance by TVA of the Foxboro Spec 200 hardware is documented in Reference [8].

References:

(8) Invensys Process Systems Document No.

800063-1830, Electromagnetic Compatibility Test Reports, dated August 21, 2008, Rev. 0.

300 EICB (Singh)

Need Radiation Monitoring System Description/Design Criteria Are detectors different from Unit 1. Describe any differences.

Are there any commercially dedicated parts in the RM-1000? If so, how are they dedicated?

Please confirm that digital communication ports available in RM-1000 are not used.

Responder: Temples/Mather (1) The Radiation Monitoring Design Criteria Document, WB-DC-40-24, Revision 21 is contained in Attachment 6 to letter dated October 31, 2010.

(2) Attachment 7 contains the General Atomics detector differences report. The containment high range radiation monitors are loops 271-274.

(3) For safety-related applications, General Atomics Electronic Systems, Inc. supplies the RM-1000 module assembly as a Basic Component. This assembly does contain component parts that are Safety-Related Commercial Grade Items (SRCGI). Because these SRCGI components are assembled into the delivered Basic Component, they are dedicated to the assembly by virtue of the acceptance test of the full RM-1000 assembly. Safety-related commercial grade items are dedicated in accordance with General Atomics approved 10 CFR 50 Appendix B program.

(4) The digital communications ports on the safety-related RM-1000 radiation monitors are not used.

43. N Open Response is included in letter dated 10/29/10 Open-TVA/Bechtel Due 10/31/10 TVA to address the following comments:

(1) Is it Att. 5 or Att. 6?

(2) Pl. confirm that HRRMs are loops 271-274.

(3) TVA to clarify that GA has a commercial dedication program in place and that GA is an approved

10CFR50, App. B supplier.

App B does not address commercial grade dedication.

(4) Response acceptable.

RAI No. 25 ML102980005 10/26/2010 TVA Letter dated 10/29/10 Item No. 20 318 7.5.2.

3 7.5 EICB (Singh)

TVA has provided the following documents for RM-1000 equipment qualification:

(i)

Qualification Test Report for RM-1000 Processor Module and Current-To-Frequency Converter Responder: Temples (i)

Applicable to WBN Unit 2. 04508905-1QR is applicable only in regards to the RM-1000, with the exception of re-qualification of

44. N Open Note check 04508905-1QR or QR. Staff version is QR only.

Open-TVA/Bechtel Due 10/31/10 RAI No. 28 ML102980005 10/26/2010 TVA Letter dated 10/29/10 Item No. 34

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Date Comments 04508905-QR (January 2001)

(ii)

Qualification Test Report Supplement, RM-1000 Upgrades 04508905-1SP (June 2006)

(iii) Qualification Test Report Supplement, RM-1000 Upgrades 04508905-2SP (June 2008)

(iv) Qualification Test Report Supplement, RM-1000 Upgrades 04508905-3SP (May 2008)

Please clarify whether all of these are fully applicable to WBN2 or are they applicable with exceptions? If with exceptions, then please clarify what those are.

Supplement 3 was issued one month prior to supplement 2. Please explain the reason for the same.

certain RM-1000 equipment differences covered in the -1SP report. The Current-to-Frequency (I-F) converter module qualifications in the base report and the -

1SP report are not applicable to the RM-1000s, and will be used later as references in the WBN Unit 2 specific qualification reports.

(ii)

Applicable to WBN Unit 2.

(iii) Not applicable to WBN Unit 2 (iv) Not applicable to WBN Unit 2 The 04508905-3SP report was prepared for another TVA plant, as a monitor system-level report, where the system included equipment mostly based on the base report equipment items.

These two -2SP and -3SP supplement reports were essentially worked concurrently, but the -

2SP document review/release process resulted in the release time difference.

Response is included in letter dated 10/29/10 Response update required. It is clear that 04508903-2SP and -3SP are not applicable. The response for applicability of 04508905-QR and

-1SP to RM-1000 and IF converter is not clear.

Check page numbers of Appendix F (missing/duplicate pages).

Check applicability of Appendix C to RM1000 instead of RM2300?

All equipment qualification reports including supplements 2SP and 3SP have been reviewed as vendor drawings for WBN-2.

Please explain the reason for applicability of one report and not the other.

Further all TVA/Bechtel reviews seems to be dispositioned as Code 4, Review not required. Work may proceed.

The applicable reports should have been reviewed prior to dispositioning them. Please explain the apparent lack of review of WBN-2 applicable documents. Was appropriate review

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Date Comments guidance used?.

327 DORL (Poole) 6 contains Foxboro proprietary drawings 08F802403-SC-2001 sheets 1 through 6. An affidavit for withholding and non-proprietary versions of the drawings will be submitted by January 31, 2011.

Responder: Webber Non-Prop drawings are available for submittal.

45. N Open Open-TVA/Bechtel Due 1/31/11 330 7.3 7.3 EICB (Darbali)

Related to Item 298 IE Bulletin 80-06 calls for review of engineered safety features with the objective of ensuring that no device will change position solely because of the reset action.

In Supplement 3 of NUREG-0847, section 7.3.5, the staff approved the design modifications proposed by the applicant that would allow certain devices to remain unchanged upon an ESF reset. The staff also found acceptable the applicants justification for some safety-related equipment that does not remain in its emergency mode after an ESF reset.

Please list for Unit 1 and Unit 2 the safety-related equipment that does not remain in its emergency mode after an ESF reset.

Responder: Hilmes/Faulkner The original response to IE Bulletin 80-06 for both WBN Unit 1 and 2 was provided on TVA letter to the NRC dated March 11, 1982 (ML073530129)

(Reference 4). Subsequent design changes have impacted the original response such that some equipment that originally changed state no longer does so and some equipment has been deleted.

The following is the updated list of equipment from the letter that changes state on ESF reset:

1. Unit 1 and 2 Equipment (prefix 1- (Unit 1) or 2- (Unit 2)

a. Auxiliary Feedwater Pump Turbine Speed Control Valve, FCV-1-52

b. Auxiliary Feedwater (AFW) Level Control Valves as listed below:

i. LCV-3-172

- SG3 - Level Control Valve ii. LCV-3-173

- SG2 - Level Control Valve iii. LCV-3-174

- SG1 - Level Control Valve iv. LCV-3-175

- SG4 - Level Control Valve

v. LIC-3-172

- SG3 - Level Indicating Controller vi. LIC-3-173

- SG2 - Level Indicating Controller vii. LIC-3-174

- SG1 - Level Indicating Controller viii. LIC-3-175

- SG4 - Level Indicating Controller ix. LCV-3-148 - SG3 - Level Valve

x. LCV-3-156 - SG2 - Level Valve xi. LCV-3-164 - SG1 - Level Valve xii. LCV-3-171 - SG4 - Level Valve xiii. LCV-3-148A - SG3 - Level Bypass Control Valve xiv. LCV-3-156A - SG2 - Level Bypass Control Valve xv. LCV-3-164A - SG1 - Level Bypass Control Valve xvi. LCV-3-171A - SG4 - Level Bypass Control Valve xvii. LIC-3-148

- SG3 - Controller xviii. LIC-3-156

- SG2 - Controller xix. LIC-3-164

- SG1 - Controller xx. LIC-3-171

- SG4 - Controller

46. Y Open TVA to replace the word Containment with Compartment in 1.c.

Open-TVA/Bechtel Due TBD EICB RAI No.20 ML102910017, 10/19/10

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Date Comments

c. Lower and Upper Compartment Cooler Fans and Control Rod Drive Mechanism Cooler Fan

d. Penetration Room Cooler Fans Elevations 737, 692 and 713

e. Pipe Chase Cooler Fans

2. Common Equipment

a. Shutdown Board Room A Pressurizing Fans

b. Control Building Ventilation Dampers as listed below:

i. 0-FCO-31-9 - Spreading Room Supply Fan Damper ii. 0-FCO-31-10

- Spreading Room Supply Fan Damper iii. 0-FCO-31-16

- Toilet a Locker Room Exhaust Fan Exhaust Damper iv. 0-FCO-31-17

- Toilet a Locker Room Exhaust Fan Exhaust Damper

v. 0-FCO-31-3 - Main Control Room Isolation Damper vi. 0-FCO-31-4 - Main Control Room Isolation Damper vii. 0-FCO-31-36

- Spreading Room Fresh Air Supply Damper viii. 0-FCO-31-37

- Spreading Room Fresh Air Supply Damper

c. Cask Loading Exhaust Dampers as listed

i. 0-FCO-30-122

- Cask Loading Area Exhaust Damper ii. 0-FCO-30-123

-Cask Loading Area Exhaust Damper

d. Auxiliary Building General Supply Exhaust Fans Elevation 737

e. CCW and AFT Pump Space Cooler Fans

f.

Spent Fuel Pit Pumps Space Coolers

g. EGTS Room Coolers

h. Turbine Driven AFW and Boric Acid Space Coolers 331 7.6.1 7.6.7 EICB (Singh)

As a follow up of OI 190, Staff has reviewed the proprietary version of the DMIMS-DX system description to verify the conformance claims in the FSAR. Staff has noted the following insufficiencies and discrepancies between the FSAR and the Responder: WEC/Harless/Clark TVA Partial Response:

1) The source of the information is the DMIMS-

47. N Open Open-TVA/Bechtel Pending FSAR Amendment 102 RAI No. 8 ML102980005 10/26/2010 TVA Letter dated 10/29/10 Item No. 40 Follow-up of OI-190.

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Date Comments proprietary version of the system description for loose parts monitoring system provided by TVA.

1) FSAR, Amendment 100, page 7.6-5 states, During baseline testing, the reactor vessel and steam generator are impacted three feet from each sensor with a force of 0.5 ft-lb. Loose parts detection is accomplished at a frequency of 1 kHz to 20 kHz, where background signals from the RCS are acceptable. Spurious alarming from control rod stepping is prevented by a module that detects CRDM motion commands and automatically inhibits alarms during control rod stepping.

The online sensitivity of the DMIMS-DX' is such that the system will detect a loose part that weighs from 0.25 to 30 Ib and impacts with a kinetic energy of 0.5 ft-lb on the inside surface of the RCS pressure boundary within 3 ft of a sensor.

The source of this information is not cited nor is it described in the system description. TVA to provide the source of the information and update the system description as needed.

2) Regulatory Guide (RG) 1.133, rev.1, regulatory position C.1.g states that, Operability for Seismic and Environmental Conditions. Components of the loose-part detection system within containment should be designed and installed to perform their function following all seismic events that do not require plant shutdown, i.e., up to and including the Operating Basis Earthquake (OBE). Recording equipment need not function without maintenance following the specified seismic event provided the audio or visual alarm capability remains functional.

The system should also be shown to be adequate by analysis, test, or combined analysis and test for the normal operating radiation, vibration, temperature, and humidity environment.

FSAR, Amendment 100, page 7.6-5 states, The DMIMS-DX' audio and visual alarm capability will remain functional after an Operating Basis Earthquake (OBE). All of the DMIMS-DX' components are qualified for structural integrity during a Safe Shutdown Earthquake (SSE) and will not mechanically impact any safety-related equipment. Paragraphs 4.c and 4.d of the system description are not consistent with the seismic qualifications described in the FSAR. TVA to provide the source of the information contained in the FSAR and update the system description as needed.

3) The system description clearly describes the In-containment equipment and DIMMS-DX Cabinet equipment. The FSAR should be updated to DXTM Operations and Maintenance Manual, TS3176, Revision 0, dated August 2010. 4 contains the revised system description, Westinghouse DIMMS-DXTM Loose Part Detection System Description, Revision 1. The Westinghouse DIMMS-DXTM Loose Part Detection System Description, Revision 1 will be added as Reference 9 to section 7.6 in FSAR Amendment 102.

2) The source of the information is the DMIMS-DXTM seismic qualification report, Westinghouse report EQ-QR-33-WBT, Revision 0, Seismic Evaluation of the Digital Metal Impact Monitoring System (DMIMS-DXTM) for Watts Bar Unit 2. Attachment 14 contains the revised system description, Westinghouse DIMMS-DXTM Loose Part Detection System Description, Revision 1.

3) The entries for the following items in FSAR Section 7.6.7 will be modified in Amendment 102 as shown in Attachment 3 for draft revision to WBN Unit 2 FSAR Section 7.6.7, Loose Part Monitoring System (LPMS)

System Description.

Sensors (In Containment)

Softline Cable (In Containment)

Preamplifier (In Containment) contains the FSAR Amendment 102 Change Markups that reflect these changes.

4) The source of the information is Westinghouse Letter WBT-D-2580, Tennessee Valley Authority Watts Bar Nuclear Plant Unit 2 Response to NRC RAIs on LPMS (Reference 5). Attachment 14 contains Westinghouse DIMMS-DXTM Loose Part Detection System Description, Revision 1.

In responding to Item 4, conflicting information was found between the Westinghouse-prepared FSAR section and various Westinghouse technical documents.

To fully respond to this item, a change to the FSAR is required to change the minimum flat sensor frequency response from 5 Hz to 10 Hz. Attachment 3 contains the FSAR Amendment 102 Change Markups that reflect the revised frequency response of the sensor.

Westinghouse document 1TS3182, Revision 0, Watts Bar Unit 2 DMIMS-DXTM System Validation Data Package, dated July 2010 has been added as reference 8 to FSAR submittal TVA to reference the DMIMS-DXTM Operations Manual in the FSAR as the source document TVA to reference the source document for item# 4 per the response.

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Date Comments reflect the equipment locations for clarification purposes.

4) The information regarding frequency ranges of the sensors is included on page 7.6-6 of Amendment 100 of the FSAR but the system description does not contain this information. Please provide the source of this information and update the system description to reflect the appropriate information.

5) Please provide information as to how the in-containment components are qualified for vibration as addressed in regulatory position C.1.g of RG 1.133.

Section 7.6 in amendment 102. Per Westinghouse letter WBT-D-2580, this document will be revised to reflect the 10Hz minimum frequency and provide the basis for the frequency response values in the FSAR.

5) In-containment component qualification for vibration as addressed in regulatory position C.1.g of RG 1.133, will be addressed in a future RAI response letter.

335 7.6.1 7.6.7 EICB (Singh)

LPMS: Reference to OI-331, sub item 2.

Provide analysis, test, or combined analysis and test for normal operating radiation, temperature, and humidity environment per regulatory position C.1.g of RG 1.133. As an alternate TVA may confirm that the required equipment has been qualified for the environments stated in RG 1.133, position C.1.g and that TVA has reviewed the test report and found it acceptable.

Responder: WEC

48. N Open Open-TVA/Bechtel Due TBD 336 7.5.2.

3 7.5 EICB (Singh)

Re: RM-1000 Report 04508905-QR Please check the page numbering in Appendix F, Closed Nonconforming Material Reports. Pages 1 and 6 are missing and page 2 is included multiple times.

Also identify which page number is the last page number.

49. N Open Open-TVA/Bechtel 337 7.5.2.

3 7.5 EICB (Singh)

Re: RM-1000 Report 04508905-QR Appendix C is titled as Seismic Test Fixture for RM2300, See Drawing 04619028. Please verify whether or not it applies to RM-1000? If applicable, then please identify how it is applicable.

50. N Open Open-TVA/Bechtel 338 7.5.2.

3 7.5 EICB (Singh)

In page 3-15 and appendix B of Qualification Test Report 04508905-QR, licensee described the selection of seismic required response spectra (RRS) and indicated Figure 3-2 (page 3-17), Figure 3-3 (page 3-18) are the RRSs used. The RRS curves used for actual testing are lower than the RRS curves that are shown on Figures 3-2 and 3-3. The RRS curves used for testing are shown in Figure 4-5, 4-6, 4-7, 4-8, 4-11, 4-12, 4-13, and 4-14 (pages 4-25, 4-26, 4-28, 4-29, 4-37, 4-38, 4-40, 4-41). Please clarify and justify why the RRS curves used in actual tests are lower than the RRS curves determined in Figures 3-2 and 3-3.

In addition please justify that the RRS used for testing envelopes the RRS required for WBN-2 application specific seismic conditions.

51. N Open Open-TVA/Bechtel

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Date Comments 339 7.5.2.

3 7.5 EICB (Singh)

In the Qualification Test Report 04508905-QR, the licensee provided only eight Safe Shutdown Earthquake (SSE) Test Response Spectra (TRS) as mentioned in the previous open item (OI-338). Please provide all SSE and Operating Basis Earthquake (OBE) TRS plots for NRC review.

52. N Open Open-TVA/Bechtel 340 7.5.2.

3 7.5 EICB (Singh)

Provide test result curves for all EMI/RFI tests listed in Table 3.2.3 (page 3-8) of the Qualification Test Report 04508905-QR. In addition, please provide the standards or the guidance documents used as the source for ENV 50140, ENV 55011 Class A, and EN 55022 Class B.

53. N Open Open-TVA/Bechtel 041 7.5.2 7.5.1 EICB (Carte) 2/19/2010 Please provide the following Westinghouse documents:

(1) WNA-DS-01617-WBT Rev. 1, "PAMS System Requirements Specification" (2) WNA-DS-01667-WBT Rev. 0, "PAMS System Design Specification" (3) WNA-CD-00018-GEN Rev. 3, "CGD for QNX version 4.5g" Please provide the following Westinghouse documents or pointers to where the material was reviewed and approved in the CQ TR or SPM:

(4) WNA-PT-00058-GEN Rev. 0, "Testing Process for Common Q Safety systems" (5) WNA-TP-00357-GEN Rev. 4, "Element Software Test Procedure" Responder: WEC Items (1) and (2) were docketed by TVA letter dated April 8, 2010.

Item (3) will be addressed by Revision 2 of the Licensing Technical Report. Due 12/3/10 Item (4) will be addressed by Westinghouse developing a WBN2 Specific Test Plan to compensate for the fact that the NRC disapproved WNA-PT-00058-GEN during the original Common Q review. Due 12/7/10 Item (5) Procedures that are listed in the SPM compliance table in the Licensing Technical Report revision 1 supersede that test procedure WNA-TP-00357-GEN.Due 10/22/10

54. N Open Partial Response is included in letter dated 10/5/10.

The SysRS and SRS incorporate requirements from many other documents by reference.

NNC 8/25/10: (3) An earlier version of this report was docketed for the Common Q topical report; therefore, there should be no problem to docket this version. (4)

Per ML091560352, the testing process document does not address the test plan requirements of the SPM. Please provide a test plan that implements the requirements of the SPM.

Open-TVA/WEC Due 12/7/10 TVA to docket information indentified in ISG6.

NRC Meeting Summary NRC Meeting Summary ML093560019, Item No. 11 TVA Letter dated 6/18/10 TVA Letter dated 10/5/10 See also Open Item Nos. 226 &

270.

067 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the "Commercial Grade Dedication Instructions for AI687, AI688, Upgraded PC node box and flat panels." was September 28, 2010.

Responder: WEC Date: 5/25/10 The following status is from the revised WB2 Common Q PAMS ISG-6 Compliance Matrix submitted in response to Item 43:

a. AI687, AI688 - Scheduled for September 28, 2010

b. Upgraded PC node box and flat panel displays

- Per Westinghouse letter WBT-D-2024 (Reference 7), these items are available for audit at the Westinghouse Rockville office.

c. Power supplies - Per Westinghouse letter WBT-D-2035 (Reference 12), these items are available for audit at the Westinghouse Rockville office.

To be addressed during 9/20-9/21 audit

55. N Open This item is addressed in Rev. 2 of the Licensing Technical Report Open-TVA/WEC Due 12/3/10 N/A - No question was asked. Item was opened to track comm8ittment made by applicant.

TVA Letter dated 6/18/10 068 7.5.2 7.5.1 C

B (C

art By letter dated March 12, 2010 TVA stated that the target submittal date for the "Summary Report on Responder: WEC Date: 5/25/10

56. N Open Open-TVA/WEC N/A - No question was TVA Letter dated 6/18/10

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Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments acceptance of AI687, AI688, Upgraded PC node box, flat panels, and power supplies." was September 28, 2010.

The following status is from the revised WB2 Common Q PAMS ISG-6 Compliance Matrix submitted in response to Item 43:

a. AI687, AI688 - Scheduled for September 28, 2010

b. Upgraded PC node box - Per Westinghouse letter WBT-D-2024 (Reference 7), this item is available for audit at the Westinghouse Rockville office.

c. Flat panel displays - Per Westinghouse letter WBT-D-2024 (Reference 7), this item is available for audit at the Westinghouse Rockville office.

d. Power supplies - Per Westinghouse letter WBT-D-2035 (Reference 12), these items are available for audit at the Westinghouse Rockville office.

To be addressed during 9/20-9/21 audit This item is addressed in Rev. 2 of the Licensing Technical Report Due 12/3/10 asked. Item was opened to track comm8ittment made by applicant.

069 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the "Watts Bar 2 PAMS Specific FAT Report" was October 2010.

Responder: WEC Date: 5/25/10

57. N Open Awaiting for document to be docketed by TVA.

Open-TVA/WEC Due 2/18/11 N/A - No question was asked. Item was opened to track comm8ittment made by applicant.

N/A 070 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the "Concept and Definition Phase V&V Report" was March 31, 2010.

Responder: WEC Date: 5/25/10 Per Westinghouse letter WBT-D-1961, (Reference 8) this document is available for audit at the Westinghouse Rockville office.

WNA-VR- 00283-WBT, Rev 0 was submitted on TVA letter to the NRC dated August 20, 2010 (Reference 7).

The submitted V&V did not address the Requirements Traceability Matrix and did not summarize anomalies. At the September 15th public meeting, Westinghouse agreed to include the Concept and Definitions Phase Requirements Traceability Matrix (RTM) in the next IV&V report along with partial Design Phase updates to the RTM.

TVA Revised Response:

TVA submitted WNA-VR- 00283-WBT, Rev 0 to NRC in letter dated August 20, 2010 (Reference 6).

The next Independent Verification and Validation (IV&V) report will include the Design Phase Requirements Traceability Matrix. The

58. N Open Partial Response is included in letter dated 10/5/10.

Regulations require that the NRC review be based on docketed material. Awaiting for document to be docketed by TVA.

NNC 8/25/10:

Requirements Phase SVVR provided by TVA letter dated 8/20/10.

Open-TVA/WEC Due 12/21/10 N/A - No question was asked. Item was opened to track comm8ittment made by applicant.

TVA Letter dated 6/18/10 TVA Letter dated 8/20/10 TVA Letter dated 10/5/10

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Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments Design Phase IV&V Report will be submitted to NRC by February 11, 2011.

071 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the "Design Phase V&V Report" was July 30, 2010.

Responder: WEC Date: 5/25/10

59. N Open Awaiting for document to be docketed by TVA.

Open-TVA/WEC Due 12/21/10 N/A - No question was asked. Item was opened to track commitment made by applicant.

N/A 072 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the "Implementation Phase V&V Report" was September 30, 2010.

Responder: WEC Date: 5/25/10

60. N Open Awaiting for document to be docketed by TVA.

Open-TVA/WEC Due 12/21/10 N/A - No question was asked. Item was opened to track commitment made by applicant.

N/A 073 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the "Integration Phase V&V Report" was October 29, 2010.

Responder: WEC Date: 5/25/10

61. N Open Awaiting for document to be docketed by TVA.

Open-TVA/WEC Due 12/31/10 N/A - No question was asked. Item was opened to track commitment made by applicant.

N/A 074 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the "Final V&V Report" was November 30, 2010.

Responder: WEC Date: 5/25/10

62. N Open TVA to provide due date.

Open-TVA/WEC Due N/A - No question was asked. Item was opened to track commitment made by applicant.

N/A 075 7.5.2 7.5.1 EICB (Carte)

By letter dated March 12, 2010 TVA stated that the target submittal date for the "Watts Bar 2 PAMS Specific FAT Procedure" was September 30, 2010.

Responder: WEC Date: 5/25/10

63. N Open Awaiting for document to be docketed by TVA.

Open-TVA/WEC Due 11/24/20 N/A - No question was asked. Item was opened to track commitment made by applicant.

N/A 081 7.5.2 7.5.1 EICB (Carte) 5/6/2010 The PAMS Licensing Technical Report (WNA-LI-00058-WBT Rev. 0, Dated April 2010), in Section 7, lists codes and standards applicable to the Common Q PAMS. This list contains references to old revisions of several regulatory documents, for example:

(1) RG 1.29 - September 1978 vs. March 2007 (2) RG 1.53 - June 1973 vs. November 2003 (a) IEEE 379-1994 vs. -2000 (3) RG 1.75 - September 1975 vs. February 2005 (a) IEEE 384-1992 vs. -1992 (4) RG 1.100 - June 1988 vs. September 2009 (a) IEEE 344-1987 vs. -2004 Responder: Merten/WEC The codes and standards documents listed in Section 7 of the Common Q PAMS Licensing Technical Report are the documents that the Common Q platform was licensed to when the NRC approved the original topical report and issued the approved SER. The WBN Unit 2 Common Q PAMS is designed in accordance with the approved Common Q topical report and approved SER and the codes and standards on which the SER was based. Since the current versions referenced are not applicable to WBN Unit 2, there is no basis for a comparison review.

64. N Open ML101600092 Item No.1:

There are three sets of regulatory criteria that relate to a Common Q application (e.g. WBN2 PAMS):

(a) Common Q platform components - Common Q TR (b) Application Development Processes - Common Q SPM (c) Application Specific -

Open-TVA/WEC Due 12/31/10 TVA to provide requested information.

EICB RAI ML102910002 Item No. 9 TVA Letter dated 6/18/10

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Acceptable Y/N Status/ Current Actions Resolution Path RAI No. & Date RAI Resp.

Date Comments (5) RG 1.152 - January 1996 vs. January 2006 (a) IEEE 7-4.33.2-1993 vs. -2003 (6) RG 1.168 - September 1997 vs. February 2004 (a) IEEE 1012-1986 vs. -1998 (b) IEEE 1028-1988 vs. -1997 (7) IEEE 279-1991 vs. 603-1991 (8) IEEE 323-1983 vs. -1974 (RG 1.89 Rev. 1 June 1984 endorses 323-1974)

However, LIC-110, "Watts Bar Unit 2 License Application Review," states: "Design features and administrative programs that are unique to Unit 2 should then be reviewed in accordance with the current staff positions." Please identify all differences between the versions referenced and the current staff positions. Please provide a justification for the acceptability PAMS with respect to these differences.

Bechtel to develop a matrix and work with Westinghouse to provide justification.

current regulatory criteria The Common Q Topical Report and associated appendices primarily addressed (a) and (b). The Common Q SER states:

Appendix 1, Post Accident Monitoring Systems, provides the functional requirements and conceptual design approach for upgrading an existing PAMS based on Common Q components (page 58, Section 4.4.1.1, Description)On the basis of the above review, the staff concludes that Appendix 1 does not contain sufficient information to establish the generic acceptability of the proposed PAMS design (page 56, Section 4.4.1.3, PAMS Evaluation)

The NRC did not approve the proposed PAMS design.

Section 6, References, and Section 7, Codes and Standards Applicable to the Common Q PAMS, of the PAMS Licensing Technical Report contain items that are not the current regulatory criteria.

Please provide an explanation of how the WBN2 PAMS conforms with the application specific regulatory criteria applicable to the WBN2 PAMS design.

For example IEEE Std. 603-1991 Clause 5.6.3, Independence Between Safety Systems and Other Systems, and Clause 6.3, Interaction Between the Sense and Command Features and Other Systems, contain application specific requirements that must be addressed by a PAMS system.

Awaiting TVA Response.

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Date Comments 082 7.5.2 7.5.1 EICB (Carte) 5/6/2010 The PAMS Licensing Technical Report (WNA-LI-00058-WBT Rev. 0, Dated April 2010), in Section 2.3, lists hardware/software changes to the Common Q PAMS previously reviewed by the NRC. However the Common Q ISG-6 Compliance Matrix does not contain activities that address qualification of all changes specifically:

Responder: WEC Date:

6/18/10 These components can be found in the Summary Qualification Report Of Hardware Testing For Common Q Applications, 00000-ICE-37764, Rev 3 and TWICE Qualification Status Report, WNAQR-00011-SSP Per Westinghouse letter WBT-D-2024, (Reference __) dated June 9, 2010, these documents are available for audit at the Westinghouse Rockville Office.

TVA provided information by letter dated July 30, 2010 (ML102160349) - See Enclosure 1 Item No.

7.

Revision 1 of the Licensing Technical Report provides additional detail on the platform specific to WBN2 and references to the evaluation documentation.

65. N Open Regulations require that the NRC review be based on docketed material. Awaiting for document to be docketed by TVA.

NNC 8/9/10: per telephone conversation on 8/5/10, it is not clear how Westinghouse Commercial Grade Dedication Plans and Reports for Digital I&C.

Westinghouse agree to present to the NRC in a public meeting on August 17, 2010, and explanation of how their system addresses regulatory criteria for both commercial grade dedication and equipment qualification.

NNC 8/25/10: In the August 17, 2010 public meeting Westinghouse stated that the CDI were the plans. The NRC requested that the plans and associated reports be docketed.

Open-TVA/WEC Revision 1, Due 10/22/10 EICB RAI ML102910002 Item No. 10 TVA Letter dated 7/30/10 085 7.5.2 7.5.1 EICB (Carte) 5/6/2010 Please provide a detailed description of the PAMS MTP data link to the plant computer. This description should identify all equipment (model & version) and describe the functions that each piece of equipment performs. This description should be of sufficient detail for the NRC to independently evaluate the statements made in WNA-LI-00058-WBT Rev. 0, Section 5.3.

Responder: WEC Is the WEC ISG4 evaluation inadequate?

Operation of the MTP as a barrier device. MTP Fails as a barrier device. Describe what prevents a MTP failure from propagating to the AC160?

Node loss on the bus? Bus loss?

Revise the ISG4 section of the Licensing Technical Report (Rev. 2) to provide a more detailed description of the MTP as a barrier device.

66. N Open A response will be provided by 10/31/10 NNC 8/11/10: Design information should be available now. By letter dated July 30, 2010 (ML102160349) TVA stated that the MTP was connected to a Red Hat Linux Server (see Enclosure 1, Item No.

14 part b.). It is presumed that this server is not safety-related. IEEE 603-1991 Clause 5.6.3(1) states, "Isolation devices used to affect a safety system boundary shall be classified as part of the safety system."

Please describe how the MTP serves as the isolation device.

Open-TVA/WEC Due 11/24/10 Hardware is in Rev. 1 of the Licensing Technical Report due 10/22.

NNC 8/25/10:

Disagree with path forward input by TVA above.

An explanation is about the design is needed.

FAT test procedure to include data storm testing of the MTP interface due 11/24/10 EICB RAI ML102910002 Item No. 13 086 7.5.2 7.5.1

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5/6/2010 Responder: WEC Date: 5/24/10 67. N Open Open-TVA/WEC EICB RAI TVA Letter

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Date Comments The PAMS Licensing Technical Report (WNA-LI-00058-WBT Rev. 0, Dated April 2010), in Section 6, lists references applicable to the Common Q PAMS.

This list contains references to old revisions of several regulatory documents, for example:

(1) DI&C-ISG04 - Rev. 0 (ML072540138) vs. Rev. 1 (ML083310185)

However, LIC-110, "Watts Bar Unit 2 License Application Review," states: "Design features and administrative programs that are unique to Unit 2 should then be reviewed in accordance with the current staff positions." Please identify all differences between the versions referenced and the current staff positions. Please provide a justification for the acceptability PAMS with respect to these differences.

The regulatory documents listed in the Common Q PAMS Licensing Technical Report are the documents that the Common Q platform was licensed to when the NRC approved the original topical report and issued the approved SER. The WBN Unit 2 Common Q PAMS is designed in accordance with the approved Common Q topical report and approved SER and the regulatory documents on which the SER was based. Since the current versions referenced are not applicable to WBN Unit 2, there is no basis for a comparison review.

Rev 0 of the Licensing Technical Report references Rev. 1 of ISG4 TVA to address with item OI 81.

Due 12/31/10 ML102910002 Item No. 14 dated 6/18/10 138 EICB (Carte)

By letter dated February 3, 2010, Westinghouse informed TVA that certain PAMS documentation has been completed.

(a) The draft ISG6 states that a commercial grade dedication plan should be provided with an application for a Tier 2 review.

By letter dated February 5, 2010, TVA stated that the commercial grade dedication plan was included in the Common Q Topical Report Section 11, Commercial Grade Dedication Program. Section 11 includes a description of the Common Q Commercial Grade Dedication Program, and states: A detailed review plan is developed for each Common Q hardware or software component that requires commercial grade dedication.

Please provide the commercial grade dedication plans for each Common Q hardware or software component that has not been previously reviewed and approved by the NRC.

(b) The draft ISG6 states that a commercial grade dedication report should be provided within 12 months of requested approval for a Tier 2 review.

(i) Please provide 00000-ICE-37722 Rev. 0, Commercial Grade Dedication Report for the QNX Operating System for Common Q Applications.

(ii) Please provide WNA-CD-00018-GEN Rev. 3, Commercial Dedication Report for QNX 4.25G for Common Q Applications.

Responder: WEC This item is used to track all Commercial Grade Dedication issues.

68. N Open TVA agreed to include a description of the generic Westinghouse hardware commercial grade dedication process in the PAMS licensing technical report. (see ML102920031 Item No 1)

TVA agreed to include (in the PAMS licensing technical report) an evaluation of WBN2 critical characteristics for commercial Westinghouse hardware components against the generic critical characteristics. (see ML102920031 Item No 2)

TVA agreed to include a description of the generic Westinghouse software commercial grade dedication process in the PAMS licensing technical report. (see ML102920031 Item No 3)

TVA agreed to include (in the PAMS licensing technical report) an evaluation of WBN2 critical characteristics for commercial software components against the generic critical characteristics. (see ML102920031 Item No 4)

Open-TVA/WEC To be addressed by Rev. 2 of the Licensing Technical Report due 12/3.

Due 12/3/10 ML101650255, Item No. 2 140

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The first requirement in the WBN2 PAMS SysRS (i.e., Responder: Clark

69. N Open Open-TVA/WEC ML101650255, TVA Letter WBN2 PAMS System

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Date Comments R2.2-1) states: The PAMS shall be capable of operation during normal and abnormal environments and plant operating modes. The rational for this requirement is that it is necessary to meet Regulatory Guide (RG) 1.97.

What document specifies which RG 1.97 variables are implemented in the Common Q based WBN2 PAMS?

WBN Unit 2 FSAR Amendment 100 Section 7.5.1.8, Post Accident Monitoring System (PAMS) specifies the Reg. Guide 1.97 variables implemented in the Common Q based WBN Unit 2 PAMS NNC 11/3/10: The origin of the requirements in the SysRS are not clearly document. Rev. 1 of the Common Q PAMS Licensing Technical Report contains an open item that will be addressed in Rev. 2; this open item is to include TVAs enhanced contract compliance matrix. It is expected that this matrix will address this open item.

to docket PAMS Licensing Technical Report Rev. 2.

Item No. 4 dated 10/29/10 Item No. 10 Requirements Specification TVA docketed WNA-DS-01617-WBT Rev. 1, RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System-System Requirements Specification, dated December 2009.

142 EICB (Carte)

The applicable regulatory guidance for reviewing the WBN2 PAMS SysRS would be IEEE 830 as endorsed by Regulatory Guide 1.172 and BTP 7-14 Section B.3.3.1, Requirements Activities - Software Requirements Specifications. IEEE 830-1994 Section 4.3.8, Traceable, states: A [requirements specification] is traceable of the origin of each of its requirements is clear

1. How did TVA ensure the traceability of each requirement in the WBN2 PAMS SysRS.

2. Explain the source(s) of the requirements present in the Post Accident Monitoring Systems Software Requirements Specification. To clarify, many documents have requirements that are incorporated by reference into the SRS, but what served to direct the author to include those various documents in the SRS or, if the requirement is based on the System Requirements Specification, what directed the author to include the requirement there?

3. Clarify whether the unnumbered paragraphs in the Post Accident Monitoring Systems Software Requirements Specification, such as in the section headings, or are all such sections simply considered to be informative?

Does the same apply to documents referenced by the SRS? Such as WCAP-16096-NP-A, Rev. 1A, Software Program Manual for Common Q Systems, which is incorporated by reference in requirement R2.3-2 in the SRS.

R2.3-2 [The PAMS software shall comply with the requirements and guidelines defined in WCAP-16096-NP-A, Software Program Manual for Common Q Systems (reference 5).]

If any requirements are expressed in such unnumbered paragraph form instead of individually identified requirements, please list them, describe why they satisfy the fundamental requirement of unambiguity, and describe how they were verified.

Responder: WEC This item is used to track all traceability issues with the Software Requirements Specification (SRS).

At the September 15 public meeting in Rockville, the following actions were agreed to. These items address the traceability concerns with the Software Requirements Specification.

1. Westinghouse will perform completed a review of the Requirements Traceability Matrix(RT), using the issues identified at the 9/15 public meeting as a guide (documented below) and update the RTM as required.

2. The next issue of the IV&V report will include the Requirements phase review of the RTM and a partial review for the Design phase.

3. Westinghouse will add a comments column in the Requirements Traceability Matrix (RTM) to address items not in the SRS or SysRS.

4. IEEE 830 says you shouldnt have planning information in the SRS. Westinghouse has agreed to remove this information.

5. IEEE 830 says you shouldnt have process requirements in the SRS. Westinghouse has agreed to remove these requirements.

6. Westinghouse will perform and document an evaluation of the SRS to ensure compliance with Reg. Guide 1.172 and justify any deviations.

7. 25 issues identified by V&V where some requirements have not been included in the SDS (14) and SRS (11) at the revisions reviewed by V&V. Have these been addressed? Yes. The next revisions of the SDS and SRS address these issues.

70. N Open TVA/Westinghouse agreed to include the V&V evaluation of their reusable software element development process in the V&V design phase summary report. This evaluation would include an evaluation against the development process requirements. This evaluation would also include an evaluation of how the WBN2 specific requirements were addressed by the reusable software elements. (see ML102920031 Item No 5)

Open-TVA/WEC To be addressed by Revision of the RTM, SRS, SysRS, and SysDS.

Due 12/31/10.

ML101650255, Item No. 6 WBN2 PAMS System Requirements Specification TVA docketed WNA-DS-01617-WBT Rev. 1, RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System-System Requirements Specification, dated December 2009.

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Date Comments

4. Are there any sources of requirements in parallel with the Post Accident Monitoring Systems Software Requirements Specification? Meaning does the SRS contain, explicitly or by reference, all the requirements that were used in the design phase for the application specific software, or do software design phase activities use requirements found in any other source or document? If so, what are these sources or documents?

5. References 12, 27, 29, and 31-44 in the Post Accident Monitoring Systems Software Requirements Specification are various types of Reusable Software Element.

These references are used in the body of the SRS, for example:

R5.3.14-2 [The Addressable Constants CRC error signal shall be TRUE when any CAL CRC's respective ERROR terminal = TRUE (WNA-DS-00315-GEN, "Reusable Software Element Document CRC for Calibration Data" [Reference 12]).]

They are also included via tables such as found in requirement R7.1.2-1

[The Watts Bar 2 PAMS shall use the application-specific type circuits and custom PC elements listed in Table 7.1-1.]

Do the referenced reusable software element documents include requirements not explicitly stated in the SRS? If so what is their origin?

8. Some hardware requirements are contained in the SRS instead of the System Design Specification (SDS). These will be removed from the SRS and incorporated into the next revision of the SDS.

9. RTM item R4.2-2 protection class software set to 0. Needs to be fixed internally write CAPs to revise the application restrictions document on AC160.

10. Westinghouse to improve the traceability of the tests that are performed with the function enable (FE) switch in the ENABLE position.

11. Westinghouse to revise documents to be consistent with referring to the FE switch in the ENABLE position

12. The flow of information is from the SysRS to the SDS (hardware) and SRS (software).

Describe how the documents are used.

Describe in 1.1 of the SysRS. Need a good write up of how the process works.

13. Westinghouse and TVA will develop a revised schedule for document submittals and provide it to the NRC no later than 9/30/10

14. TVA will update the Procurement Requisition Resolution Matrix and submit it to show how the Common Q PAMS design meets the contract requirements.

15. Westinghouse to add the Software Design Descriptions to the RTM

16. Westinghouse to clarify how requirements or documents are incorporated by reference into the Common Q PAMS requirements.

17. Westinghouse to review the use of shall outside of numbered paragraphs in requirements documents to ensure that all requirements are captured and clearly identified.

18. Westinghouse to resolve the following questions concerning SDDs

a. Is the SDD a standalone document or will it incorporate the generic SDD by reference?

b. What are the SDDs?

c. PAMS is a delta document so how do we capture all the generic requirements for traceability.

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Date Comments For Reusable Software Elements, Westinghouse to describe as qualified libraries by following the SPM and qualified using the Software Elements Test procedure under Appendix B program.

Provide a summary of RSEDs generic WCAP.

Westinghouse to determine if the WCAP was docketed under the AP1000 RSED concept is not in the SPM. WCAP-15927 AP-1000 does not discuss RCEDs. WCAP process was acceptable.

RSEDs are listed in the SDD References.

143 EICB (Carte)

The WBN2 PAMS Software Requirements Specification (WBN2 PAMS SRS - ML101050202) contains a table (see page iii) titled, Document Traceability & Compliance, which states that the WBN2 PAMS SRS was created to support the three documents identified (one of which is the WBN2 PAMS SysRS). Section 1.1, Overview, of the WBN2 PAMS SRS states: This document describes requirements for the major software components (a) Please list and describe each of the major software components. Please include a description of any NRC review for each of these components.

(b) Please list and describe each of the other software components. Please include a description of any NRC review for each of these components.

(c) What other documents contain the requirements for the other software components?

The WBN2 PAMS System Design Specification (WBN2 PAMS SDS) contains a table (see page iii) titled, Document Traceability & Compliance, which states that the WBN2 PAMS SysRS was created to support the WBN2 PAMS SysRS. Section 1.1, Purpose, of the WBN2 PAMS SDS states: The purpose of this document is to define the hardware design requirements (c) Do the WBN2 PAMS SRS and SDS, together, implement all of the requirements in the WBN2 PAMS SysRS?

(d) Please briefly describe all of the documents that implement the WBN2 PAMS SysRS.

Responder: WEC Addressed in the 9/15 public meeting and 9/20 -

9/21 audit. A detailed explanation will be provided.

71. N Open Open-TVA/WEC To be addressed by Revision of the RTM, SRS, SysRS, and SysDS.

Due 12/31/10.

ML101650255, Item No. 7 WBN2 PAMS System Requirements Specification TVA docketed WNA-DS-01617-WBT Rev. 1, RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System-System Requirements Specification, dated December 2009.

145 EICB (Carte)

The WBN2 PAMS System Design Specification (WBN2 PAMS SDS) contains a table (see page iii) titled, Document Traceability & Compliance, which states that the WBN2 PAMS SDS was created to support the WBN2 PAMS SysRS.

(a) Does the WBN2 PAMS SDS implement all of the hardware requirements in the WBN2 PAMS SysRS?

(b) Please briefly describe all of the documents that implement the hardware requirements of the WBN2 Responder: WEC This item is used to track all traceability issues with the System Design Specification (SDS).

At the September 15 public meeting in Rockville, the following actions were agreed to. These items partially address the traceability concerns with the System Design Specification. This item will be updated with

72. N Open During the September 20-21, 2010 audit at Westinghouse, it was acknowledged that TVA/Westinghouse had previously (in September 15, 2010 public meeting) stated:

Open-TVA/WEC To be addressed by Revision of the RTM, SRS, SysRS, and SysDS.

Due 12/31/10.

ML101650255, Item No. 9 WBN2 PAMS System Design Specification TVA docketed WNA-DS-01667-WBT Rev. 1, RRAS Watts Bar 2 NSSS Completion Program I&C Projects Post Accident Monitoring System-System Design Specification, dated December 2009.

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Date Comments PAMS SysRS.

the results of the September 20 and 21 Commercial Grade Dedication and SDS RTM audit.

1. Westinghouse will perform completed a review of the Requirements Traceability Matrix(RT), using the issues identified at the 9/15 public meeting as a guide (documented below) and update the RTM as required.

2. Some hardware requirements are contained in the SRS instead of the System Design Specification (SDS). These will be removed from the SRS and incorporated into the next revision of the SDS.

3. 25 issues identified by V&V where some requirements have not been included in the SDS (14) and SRS (11) at the revisions reviewed by V&V. Have these been addressed? Yes. The next revisions of the SDS and SRS address these issues.

4. TVA will update the Procurement Requisition Resolution Matrix and submit it to show how the Common Q PAMS design meets the contract requirements.

5. The next issue of the IV&V report will include the Requirements phase review of the RTM and a partial review for the Design phase.

6. Westinghouse to provide the generic AC160 and flat panel specifications.

7. Westinghouse and TVA to develop a schedule of licensing document submittals that can be met by the project team.

8. The flow of information is from the SysRS to the SDS (hardware) and SRS (software).

Describe how the documents are used.

Describe in 1.1 of the SysRS. Need a good write up of how the process works.

TVA would provide the RSED RTM. (see ML102920031 Item No 6)

TVA would revise and resubmit the PAMS RTM to address all types of issues identified in the public meeting. (see ML102920031 Item No 7)

TVA would revise and resubmit the Software Verification and Validation phase summary report for the requirements phase to document the completion of the requirements phase review. (see ML102920031 Item No 8) 185 EICB (Carte) 7/15/2010 An emphasis is placed on the traceability of requirements in Software Requirements Specifications in the SRP, in the unmodified IEEE std 830-1993, and even more so given the modifications to the standard listed in Regulatory Guide 1.172, which breaks with typical NRC use of the word should to say Each identifiable requirement in an SRS must be traceable backwards to the system requirements and the design bases or regulatory requirements that is satisfies Also the NRC considers that the SRS is the complete set of requirements used for the design of the software, whether it is contained within one document Responder: WEC Steve Clark to look at how to combine traceability items.

Was addressed to during the 9/15 meeting and 9/20 - 9/21 audit.

73. N Open Open-TVA/WEC Due 10/22/10 EICB RAI ML102980066 Item No. 17

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Date Comments or many. In order to evaluate an SRS against the guidance in the SRP the staff needs access to all the requirements.

References 12, 27, 29, and 31-44 in the Post Accident Monitoring Systems Software Requirements Specification are various types of Reusable Software Element.

These references are used in the body of the SRS, for example:

R5.3.14-2 [The Addressable Constants CRC error signal shall be TRUE when any CAL CRC's respective ERROR terminal = TRUE (WNA-DS-00315-GEN, "Reusable Software Element Document CRC for Calibration Data" [Reference 12]).]

They are also included via tables such as found in requirement R7.1.2-1

[The Watts Bar 2 PAMS shall use the application-specific type circuits and custom PC elements listed in Table 7.1-1.]

Do the referenced reusable software element documents include requirements not explicitly stated in the SRS? If so what is their origin?

187 EICB (Carte)

By letter dated June 18, 2010, TVA docketed responses to NRC requests for information.

1) Enclosure 1, Item No. 33 of the TVA letter dated June 18, 2010, did not identify any connection from the PAMS Operator Modules (OMs) to the plant computer and printers; however, Figure 2.1-1 of the PAMS System Requirements Specification (WNA-DS-01617-WBT Rev. 1 - ML101680578) shows a TCP connection from the OMs to the plant computer and printer. Please explain.

2) Please clarify whether any digital safety-related systems or components have a digital communications path to non-safety-related systems or with safety related systems in another division. If so, NRC staff will need these paths identified on the docket.

Responder: Merten

1) Please refer to the revised response to letter dated 10/5/10 Item 18 (RAI Matrix item 115).

2) This is a duplicate of closed RAI Matrix Item

45.

74. N Open Partial Response provided in letter dated 10/5/10 NNC 8/25/10: Why did TVA not catch this on the review of the PAMS SysRS or SRS? Does TVA check that the CQ PAMS system meets the requirements in its purchase specifications?

Open-TVA/WEC Revise Response Due 12/31 ML101970033, Item No. 1 & 2 TVA Letter dated 10/5/10 Are these connections already docketed?

202 7.5.2 EICB (Carte) 7/22/2010 The letter (ML0003740165) which transmitted the Safety Evaluation for the Common Q topical report to Westinghouse stated: "Should our criteria or regulations change so that our conclusions as to the acceptability of the report are invalidated, CE Nuclear Power and/or the applicant referencing the topical report will be expected to revise and resubmit their respective documentation, or submit justification for continued applicability of the topical report without revision of the respective documentation." Question No 81 identified many criteria changes; please revise Responder: WEC Revision 1 of the Licensing Technical Report will provide more detailed information on the changes to the platform.

Rev. 2 of the Licensing Technical Report will include the applicability of guidance.

75. N Open Partial Response provided in letter dated 10/5/10 Open-TVA/WEC Licensing Technical Report R2 Due 12/3 EICB RAI ML102980066 Item No. 4 TVA Letter dated 10/5/10

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Date Comments the respective documentation or submit justification for continued applicability of the topical report.

212 7.5.2 EICB (Carte) 7/27/2010 By letter dated June 18, 2010 (ML101940236) TVA stated (Enclosure 1, Attachment 3, Item No. 3) that the PAMS system design specification and software requirements specification contain information to address the "Design Report on Computer Integrity, Test and Calibration..." The staff has reviewed these documents, and it is not clear how this is the case.

(1) Please describe how the information provided demonstrates compliance with IEEE 603-1991 Clauses 5.5, 5.7, 5.10, & 6.5.

(2) Please describe how the information provided demonstrates conformance with IEEE 7-4.3.2-2003 Clauses 5.5 & 57.

Responder: WEC Application specific requirements for testing. This cannot be addressed in a topical report.

Evaluation of how the hardware meets the regulatory requirements.

WEC to provide the information and determine where the information will be located.

76. N Open Open-TVA/WEC Due 12/31/10 EICB RAI ML102980066 Item No. 10 245 EICB (Carte) 8/3/2010 Section 5.8 of the Common Q SPM (ML050350234) identifies the required test documentation for systems developed using the Common Q SPM. Please provide sufficient information for the NRC staff to independently assess whether the test plan for WBN2 PAMS, is as described in the SPM (e.g., Section 5.8.1).

Responder: WEC Relates to the commitment to provide the test plan and the SPM compliance matrix

77. N Open Open-TVA/WEC Due 12/7/10 EICB RAI ML102980066 Item No. 119 LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

LIC-101 Rev. 3 states: "The safety analysis that supports the change requested should include technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

250 EICB (Carte) 8/8/2010 The SPM describes the software and documents that will be created and placed under configuration control.

The SCMP (e.g., SPM Section 6, Software Configuration Management Plan) describes the implementation tasks that are to be carried out. The acceptance criterion for software CM implementation is that the tasks in the SCMP have been carried out in their entirety. Documentation should exist that shows that the configuration management tasks for that activity group have been successfully accomplished.

Please provide information that shows that the CM tasks have been successfully accomplished for each life cycle activity group.

Responder: WEC Westinghouse develops Software Release Reports/Records and a Configuration Management Release Report. Describe the documents and when they will be produced.

Summarize guidance on how to produce these records, focus on project specific requirements in SPM etc.

78. N Open Open-TVA/WEC Due 10/22/10 LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

LIC-101 Rev. 3 states: "The safety analysis that supports the change requested should include technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

251 EICB (Carte) 8/8/2010 The SPM describes the software testing and documents that will be created. The SPM also describes the testing tasks that are to be carried out.

The acceptance criterion for software test Responder: WEC The software testing performed and documents created are addressed by the SPM Compliance matrix contained in Revision 1 of the Licensing Technical Report.

79. N Open Partial response is provided in letter dated 10/25/10 Open-TVA/WEC Due 10/22/10.

10/25/10 is a partial response.

LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

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Date Comments implementation is that the tasks in the SPM have been carried out in their entirety. Please provide information that shows that testing been successfully accomplished.

of the letter dated 10/25/10 contains the Proprietary version of Westinghouses document titled: Tennessee Valley Authority (TVA), Watts Bar Unit 2 (WBN2), Post-Accident Monitoring System (PAMS), Licensing Technical Report, Revision 1, WNA-LI-00058-WBT-P, Dated October 2010 Still waiting on Software Test Plan and all other testing documentation.

LIC-101 Rev. 3 states: "The safety analysis that supports the change requested should include technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

252 EICB (Carte) 8/8/2010 The SPM contain requirements for software requirements traceability analysis and associated documentation (see Section 5.4.5.3, Requirements Traceability Analysis). Please provide information that demonstrates that requirements traceability analysis has been successfully accomplished.

Responder: WEC Explain response to AP1000 audit report.

RTM docketed NRC awaiting V&V evaluation of RTM.

80. N Open Read ML091560352 Open-TVA/WEC RTM Revision due 12/31 Check on this Hilmes LIC-101 Rev. 3 Appendix B Section 4, "Safety Evaluation" states: "the information relied upon in the SE must be docketed correspondence."

LIC-101 Rev. 3 states: "The safety analysis that supports the change requested should include technical information in sufficient detail to enable the NRC staff to make an independent assessment regarding the acceptability of the proposal in terms of regulatory requirements and the protection of public health and safety."

268 EICB (Carte) 8/19/2010 By letter dated March 12, 2010 (ML101680577), TVA stated that the application specific hardware and software architecture descriptions are addressed in the WBN2 PAMS System Design Specification (ML101680579, ML102040481, & ML102040482) and Software Requirements Specification (ML101050202, ML102040486, & ML1022040487).

Neither of these documents contain a non-proprietary figure of the architecture that can be used in the SE.

Please provide a non-proprietary figure of the architecture.

Responder: WEC Andy to see what can be done.

81. N Open Open-TVA/WEC Due 12/31/10 HILMES Check on This 301 EICB (Singh) 1.TVA is requested to address the consequences of software common cause failure including all potential resulting failures (i.e. total loss of CERPI, system fail as-is).

2. In addition, address how the actions stipulated in the plant Technical Specifications will be taken when the CERPI system indications are lost. Information notice IN 2010-10 (ML100080281) addresses the need to consider software failures and the actions required to assure that the plant will stay within its licensing basis.

3. Provide FMEA in support of your response.

4. FSAR Table 7.7-1, Plant Control System Interlocks lists interlock C-11 to block automatic rod withdrawal Responder: WEC/Davies/Clark TVA Partial Response:

For all accidents analyzed in WBN Unit 2 FSAR, Chapter 15, no credit is taken for the rod position indication system. For all continuous rod withdrawal accidents analyzed in WBN Unit 2 FSAR, Chapter 15, no credit is taken for any rod stop/block.

(1) Technical Specification 3.1.8, Rod Position Indication, does not have an action for total loss of indication; therefore, a total loss of CERPI puts the plant into LCO 3.0.3 which states:

82. N Open Partial response in 10/29 letter.

Open-TVA/WEC Due TBD

1) Please address how fail-as-is is detected i.e.

alarms, rod position deviation alarms, etc.

2) Response acceptable.

3) Response acceptable.

RAI No. 11 ML102980005 10/26/2010 TVA Letter dated 10/29/10 Item No. 21

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Date Comments when 1/1 Control Bank D rod position is above setpoint. This interlock capability would be lost in case of total loss of CERPI. How is the rod block assured for this event?

5. How is automatic rod withdrawal affected in case of total loss of signals from the CERPI to the ICS? Is this interlock fail safe?

6.FSAR chapter 15, Section 2.3.2.1states that the resolution of the rod position indicator channel is 5% of span (7.2 inches). The CERPI system accuracy specified in the CERPI System requirements Specification, WNDS-DS-00001_WBT, Rev. 2 is 12 steps or 5.19%. The specified system accuracy seems to be greater than the accuracy assumed in the FSAR Chapter 15. Please clarify this anomaly.

When an LCO is not met and the associated ACTIONS are not met, an associated ACTION is not provided, or if directed by the associated ACTIONS the unit shall be placed in a MODE or other specified condition in which the LCO is not applicable. Action shall be initiated within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> to place the unit, as applicable, in:

MODE 3 within 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />; MODE 4 within 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br />; and MODE 5 within 37 hours4.282407e-4 days <br />0.0103 hours <br />6.117725e-5 weeks <br />1.40785e-5 months <br />.

Exceptions to this Specification are stated in the individual Specifications. Where corrective measures are completed that permit operation in accordance with the LCO or ACTIONS, completion of the actions required by LCO 3.0.3 is not required.

(2) CERPI common mode software failure will be addressed in a future RAI response letter.

(3) There is no FMEA for the CERPI system.

(4) Control Bank D Automatic Rod Withdrawal Limit would be assured by Operations and control circuitry by the following 2 methods:

a. A simultaneous failure of all indications of the Rod Position Indication System places the plant in LCO 3.0.3, since it would prevent compliance with actions in LCO 3.1.8.

b. CERPI cabinet relays A-KX-18 and B-KX-18 are the PLC controlled components of Rod Withdrawal Limit.

The relays are active low requiring power to activate the contacts in the control circuit. Total loss of CERPI will open the contacts and block Automatic Rod Withdrawal. Additionally, Annunciator window 64F will annunciate to show C-11 BANK D AUTO WITHDRAWAL BLOCKED.

(5) The CERPI Maintenance and Test Panels are used to set the Rod Withdrawal Limit with output signal to ICS as a parallel path. As stated above, the relays are the controlling functions and loss of signal to ICS will not affect the capability of the control circuit to disable the Automatic Rod Withdrawal function. The C-11 interlock is fail safe with regards to loss of power.

(6) The cycle-specific analyses for the static rod

4) a. Response acceptable.

b. Pl. address failure mode on fail-as-is.

5) Response acceptable.

6) Response acceptable.

TVA to address common cause failure as stated under response item 2.

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Date Comments misalignment assume full misalignment of an individual rod from the bank position indicator(s). Such a misalignment exceeds that which is possible during plant operations when accounting for the most adverse combination of the rod deviation alarm and uncertainty of the rod position indicator (both 12 steps). For consistency of parameter (and units) with the deviation alarm and position indicator uncertainty, the WBN Unit 2 FSAR Chapter 15, Section 2.3.1 will be revised in Amendment 102 to read:

The resolution of the rod position indicator channel is +/- 12 steps. Deviation of any RCCA from its group by twice this distance (24 steps) will not cause power distributions worse than the design limits. The deviation alarm alerts the operator to rod deviation with respect to group demand position in excess of 12 steps. If the rod deviation alarm is not operable, the operator is required to take action as required by the Technical Specifications.

This change is consistent with FSAR section 4.3.2.2.5, Limiting Power Distributions Page 4.3-13, which states the maximum deviation assumed is 12 steps.