ML16029A063

(External_Sender) UHS Slides for Sequoyah?

ML16029A063
Person / Time
Site:	Sequoyah
Issue date:	01/15/2016
From:	Hess T Tennessee Valley Authority
To:	Andrew Hon Plant Licensing Branch II
References
Download: ML16029A063 (10)

Text

NRR-PMDAPEm Resource From: Hess, Thomas A <tahess@tva.gov>

Sent: Friday, January 15, 2016 2:53 PM To: Hon, Andrew

Subject:

[External_Sender] RE: UHS Slides for Sequoyah?

Attachments: ERCW NRC Presubmittal Call on 1-19-16.pptx; U1 ITS 3 7 8 draft mark-up.pdf From: Hon, Andrew [1]

Sent: Thursday, January 14, 2016 8:54 AM To: Hess, Thomas A

Subject:

UHS Slides for Sequoyah?

TVA External Message. Please use caution when opening.

1

Hearing Identifier: NRR_PMDA Email Number: 2627 Mail Envelope Properties (AB3647DBA77C034D81332BD4C951CD765636E169)

Subject:

[External_Sender] RE: UHS Slides for Sequoyah?

Sent Date: 1/15/2016 2:52:34 PM Received Date: 1/15/2016 2:53:02 PM From: Hess, Thomas A Created By: tahess@tva.gov Recipients:

"Hon, Andrew" <Andrew.Hon@nrc.gov>

Tracking Status: None Post Office: TVACHAXCH9.main.tva.gov Files Size Date & Time MESSAGE 225 1/15/2016 2:53:02 PM ERCW NRC Presubmittal Call on 1-19-16.pptx 43334 U1 ITS 3 7 8 draft mark-up.pdf 1104726 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

ERCW LAR Pre-submittal Meeting 1/19/16

LAR Objective

• To allow 7 Day Completion Time to restore One Train of ERCW to Operable Status to facilitate cleaning Shutdown Boards

TS Changes

• TS LCO 3.7.8 will be revised to add Condition A

• Condition A will allow 7 Days to restore One ERCW System train to operable status provided Ultimate Heat Sink Temperature remains below 84 degrees F.

• Condition A is only applicable:

- during planned maintenance

- when opposite Unit is defueled or in MODE 6 following defueled with refueling water cavity level 23 ft. above top of reactor vessel flange

Technical Basis

• During the cleaning of the SQN Shutdown Boards, one ERCW Pump with not be available.

• The remaining pump on the effected train is available

• Current operability criteria requires two operable ERCW pumps per train (with one pump fed from each shutdown board)

• Engineering Analysis has demonstrated that ERCW will continue to perform its design function with one pump functional provided a more restrictive UHS temperature limit imposed.

TS Bases and FSAR Changes

• The TS Bases will be revised to provided additional details regarding the application of condition A.

• FSAR will be revised to include details on the system alignments which have been evaluated to support the conclusion that ERCW will continue to perform its design function with one pump functional provided a more restrictive UHS temperature limit is imposed.

ERCW System 3.7.8 3.7 PLANT SYSTEMS 3.7.8 Essential Raw Cooling Water (ERCW) System LCO 3.7.8 Two ERCW System trains shall be OPERABLE.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTIONS Inserted new conditional CONDITION REQUIRED ACTION COMPLETION TIME ACTION A

---

NOTES-------------- A.1 --------------NOTES-------------

1. Only applicable during 1. Enter applicable planned maintenance. Conditions and Required Actions of

2. Only applicable when LCO 3.8.1, "AC Unit 2 is defueled or in Sources - Operating,"

MODE 6 following for emergency diesel defueled with Unit 2 generator made Completion Time of refueling water cavity inoperable by ERCW 7 days for planned level 23 ft. above top of System.

reactor vessel flange. maintenance with

---

2. Enter applicable opposite unit A. One ERCW System train Conditions and defueled or inoperable Required Actions of subsequent to LCO 3.4.6, "RCS Loops defueled.

- MODE 4," for residual heat removal loops made inoperable by ERCW System.

---

Restore ERCW System 7 days train to OPERABLE status.

ADD: +RXU

A.1 Restore ERCW System train to DQGHYHU\KRXUV OPERABLE status.

AND A.2 Verify Ultimate Heat Sink Temperature is < 84 degrees F SEQUOYAH - UNIT 1 3.7.8-1 Amendment XXX

ERCW System 3.7.8 CONDITION REQUIRED ACTION COMPLETION TIME B. One ERCW System train B.1 --------------NOTES-------------

inoperable for reasons 1. Enter applicable other than Condition A. Conditions and Required Actions of LCO 3.8.1, "AC Sources - Operating,"

for emergency diesel generator made inoperable by ERCW System.

Renumbered from Condition A to Condition B 2. Enter applicable Conditions and Required Actions of LCO 3.4.6, "RCS Loops

- MODE 4," for residual heat removal loops made inoperable by ERCW System.

---

Restore ERCW System 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> train to OPERABLE status.

C. Required Action and C.1 Be in MODE 3. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time of Condition A not AND met.

C.2 Be in MODE 5. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> Renumbered from Condition B to Condition C SEQUOYAH - UNIT 1 3.7.8-2 Amendment XXX

ERCW System 3.7.8 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.8.1 -------------------------------NOTE------------------------------

Isolation of ERCW System flow to individual components does not render the ERCW System inoperable.

---

Verify each ERCW System manual, power In accordance operated, and automatic valve in the flow path with the servicing safety related equipment, that is not Surveillance locked, sealed, or otherwise secured in position, is Frequency in the correct position. Control Program SR 3.7.8.2 Verify each ERCW System automatic valve in the In accordance flow path servicing safety related equipment that is with the not locked, sealed, or otherwise secured in position, Surveillance actuates to the correct position on an actual or Frequency simulated actuation signal. Control Program SR 3.7.8.3 Verify each ERCW System pump starts In accordance automatically on an actual or simulated actuation with the signal. Surveillance Frequency Control Program SEQUOYAH - UNIT 1 3.7.8-3 Amendment XXX

NRR-PMDAPEm Resource From: Hess, Thomas A <tahess@tva.gov>

Sent: Friday, January 15, 2016 2:53 PM To: Hon, Andrew

Subject:

[External_Sender] RE: UHS Slides for Sequoyah?

Attachments: ERCW NRC Presubmittal Call on 1-19-16.pptx; U1 ITS 3 7 8 draft mark-up.pdf From: Hon, Andrew [2]

Sent: Thursday, January 14, 2016 8:54 AM To: Hess, Thomas A

Subject:

UHS Slides for Sequoyah?

TVA External Message. Please use caution when opening.

1

Hearing Identifier: NRR_PMDA Email Number: 2627 Mail Envelope Properties (AB3647DBA77C034D81332BD4C951CD765636E169)

Subject:

[External_Sender] RE: UHS Slides for Sequoyah?

Sent Date: 1/15/2016 2:52:34 PM Received Date: 1/15/2016 2:53:02 PM From: Hess, Thomas A Created By: tahess@tva.gov Recipients:

"Hon, Andrew" <Andrew.Hon@nrc.gov>

Tracking Status: None Post Office: TVACHAXCH9.main.tva.gov Files Size Date & Time MESSAGE 225 1/15/2016 2:53:02 PM ERCW NRC Presubmittal Call on 1-19-16.pptx 43334 U1 ITS 3 7 8 draft mark-up.pdf 1104726 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

ERCW LAR Pre-submittal Meeting 1/19/16

LAR Objective

• To allow 7 Day Completion Time to restore One Train of ERCW to Operable Status to facilitate cleaning Shutdown Boards

TS Changes

• TS LCO 3.7.8 will be revised to add Condition A

• Condition A will allow 7 Days to restore One ERCW System train to operable status provided Ultimate Heat Sink Temperature remains below 84 degrees F.

• Condition A is only applicable:

- during planned maintenance

- when opposite Unit is defueled or in MODE 6 following defueled with refueling water cavity level 23 ft. above top of reactor vessel flange

Technical Basis

• During the cleaning of the SQN Shutdown Boards, one ERCW Pump with not be available.

• The remaining pump on the effected train is available

• Current operability criteria requires two operable ERCW pumps per train (with one pump fed from each shutdown board)

• Engineering Analysis has demonstrated that ERCW will continue to perform its design function with one pump functional provided a more restrictive UHS temperature limit imposed.

TS Bases and FSAR Changes

• The TS Bases will be revised to provided additional details regarding the application of condition A.

• FSAR will be revised to include details on the system alignments which have been evaluated to support the conclusion that ERCW will continue to perform its design function with one pump functional provided a more restrictive UHS temperature limit is imposed.

ERCW System 3.7.8 3.7 PLANT SYSTEMS 3.7.8 Essential Raw Cooling Water (ERCW) System LCO 3.7.8 Two ERCW System trains shall be OPERABLE.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTIONS Inserted new conditional CONDITION REQUIRED ACTION COMPLETION TIME ACTION A

---

NOTES-------------- A.1 --------------NOTES-------------

1. Only applicable during 1. Enter applicable planned maintenance. Conditions and Required Actions of

2. Only applicable when LCO 3.8.1, "AC Unit 2 is defueled or in Sources - Operating,"

MODE 6 following for emergency diesel defueled with Unit 2 generator made Completion Time of refueling water cavity inoperable by ERCW 7 days for planned level 23 ft. above top of System.

reactor vessel flange. maintenance with

---

2. Enter applicable opposite unit A. One ERCW System train Conditions and defueled or inoperable Required Actions of subsequent to LCO 3.4.6, "RCS Loops defueled.

- MODE 4," for residual heat removal loops made inoperable by ERCW System.

---

Restore ERCW System 7 days train to OPERABLE status.

ADD: +RXU

A.1 Restore ERCW System train to DQGHYHU\KRXUV OPERABLE status.

AND A.2 Verify Ultimate Heat Sink Temperature is < 84 degrees F SEQUOYAH - UNIT 1 3.7.8-1 Amendment XXX

ERCW System 3.7.8 CONDITION REQUIRED ACTION COMPLETION TIME B. One ERCW System train B.1 --------------NOTES-------------

inoperable for reasons 1. Enter applicable other than Condition A. Conditions and Required Actions of LCO 3.8.1, "AC Sources - Operating,"

for emergency diesel generator made inoperable by ERCW System.

Renumbered from Condition A to Condition B 2. Enter applicable Conditions and Required Actions of LCO 3.4.6, "RCS Loops

- MODE 4," for residual heat removal loops made inoperable by ERCW System.

---

Restore ERCW System 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> train to OPERABLE status.

C. Required Action and C.1 Be in MODE 3. 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time of Condition A not AND met.

C.2 Be in MODE 5. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> Renumbered from Condition B to Condition C SEQUOYAH - UNIT 1 3.7.8-2 Amendment XXX

ERCW System 3.7.8 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.8.1 -------------------------------NOTE------------------------------

Isolation of ERCW System flow to individual components does not render the ERCW System inoperable.

---

Verify each ERCW System manual, power In accordance operated, and automatic valve in the flow path with the servicing safety related equipment, that is not Surveillance locked, sealed, or otherwise secured in position, is Frequency in the correct position. Control Program SR 3.7.8.2 Verify each ERCW System automatic valve in the In accordance flow path servicing safety related equipment that is with the not locked, sealed, or otherwise secured in position, Surveillance actuates to the correct position on an actual or Frequency simulated actuation signal. Control Program SR 3.7.8.3 Verify each ERCW System pump starts In accordance automatically on an actual or simulated actuation with the signal. Surveillance Frequency Control Program SEQUOYAH - UNIT 1 3.7.8-3 Amendment XXX