Letter Sequence RAI |
|---|
|
|
MONTHYEAR1CAN011003, Response to Request for Additional Information Request for Alternative - Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-7162010-01-20020 January 2010
Response to Request for Additional Information Request for Alternative - Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716
Project stage: Response to RAI
0CAN011004, Units 1 & 2, Request for Exemption from Physical Supplemental Information2010-01-28028 January 2010
Units 1 & 2, Request for Exemption from Physical Supplemental Information
Project stage: Supplement
ML1012506042010-05-0505 May 2010
E-mail Arkansas Nuclear One, Unit 2 - Acceptance Review Email, License Amendment Request, Technical Specification Changes and Analyses Relating to Use of Alternative Source Term
Project stage: Acceptance Review
ML1014502942010-05-25025 May 2010
Request for Additional Information License Amendment Request for Technical Specification Changes and Analyses Regarding Use of Alternate Source
Project stage: RAI
2CAN061004, License Amendment Request Technical Specification Changes and Analyses Relating to Use of Alternative Source Term - Supplemental Information2010-06-23023 June 2010
License Amendment Request Technical Specification Changes and Analyses Relating to Use of Alternative Source Term - Supplemental Information
Project stage: Supplement
ML1019604922010-07-15015 July 2010
Email, Request for Additional Information License Amendment Request to Implement an Alternative Source Term
Project stage: RAI
ML1018103372010-07-29029 July 2010
Request for Withholding Information from Public Disclosure
Project stage: Withholding Request Acceptance
ML1018102182010-07-29029 July 2010
Request for Withholding Information from Public Disclosure, 6/3/2010 Affidavit Executed by J. Gresham, Westinghouse Calculation Note CN-OA-08-15, Revision 0, TAC No. ME3678
Project stage: Withholding Request Acceptance
ML1018102242010-07-29029 July 2010
Request for Withholding Information from Public Disclosure, 6/3/2010 Affidavit Executed by J. Gresham, Westinghouse Calculation Note CN-OA-08-16, Revision 0, TAC No. ME3678
Project stage: Withholding Request Acceptance
ML1018102262010-07-29029 July 2010
Request for Withholding Information from Public Disclosure - 6/3/2010 Affidavit Executed by J. Gresham, Westinghouse Calculation Note CN-OA-08-17, Revision 0
Project stage: Withholding Request Acceptance
ML1018102332010-07-29029 July 2010
Request for Withholding Information from Public Disclosure - 6/3/2010 Affidavit Executed by J. Gresham, Westinghouse Calculation Note CN-OA-08-57, Revision 0
Project stage: Withholding Request Acceptance
ML1018103312010-07-29029 July 2010
Request for Withholding Information from Public Disclosure
Project stage: Withholding Request Acceptance
ML1018103452010-07-29029 July 2010
Request for Withholding Information from Public Disclosure - 6/3/2010 Affidavit Executed by J. Gresham, Westinghouse Calculation Note CN-OA-08-18, Revision 0
Project stage: Withholding Request Acceptance
2CAN081001, Request for Additional Information, Technical Specification Changes and Analyses Relating to Use of Alternative Source Term2010-08-0909 August 2010
Request for Additional Information, Technical Specification Changes and Analyses Relating to Use of Alternative Source Term
Project stage: Request
ML1023104312010-08-19019 August 2010
Email, Request for Additional Information, Round 3, License Amendment Request for Technical Specification Changes and Analyses Regarding Use of Alternate Source Term
Project stage: RAI
2CAN081007, Request for Additional Information Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-7162010-08-24024 August 2010
Request for Additional Information Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716
Project stage: Request
2CAN091002, Request for Additional Information Technical Specification Changes and Analyses Relating to Use of Alternative Source Term2010-09-16016 September 2010
Request for Additional Information Technical Specification Changes and Analyses Relating to Use of Alternative Source Term
Project stage: Request
ML1109801972011-04-26026 April 2011
Issuance of Amendment No. 293, Technical Specification Changes and Analyses Regarding Use of Alternate Source Term
Project stage: Approval
ML1115108242011-05-0202 May 2011
Email Correction to the Safety Evaluation (SE) on the Alternate Source Term License Amendment Request, (SE Issued on April 26, 2011)
Project stage: Request
ML1115110012011-08-0909 August 2011
Correction to Safety Evaluation for Amendment No. 293 Related to Use of Alternate Source Term
Project stage: Approval
2010-07-29
[Table View] |
Text
From:
Kalyanam, Kaly Sent:
Thursday, July 15, 2010 1:36 PM To:
BICE, DAVID B Cc:
CLARK, ROBERT W
Subject:
RAI on the ANO-2 LAR to implement AST (ME3678)
- Dave, By letter dated March 31, 2010, Entergy Operations, Inc. (the licensee), submitted a request for license amendment to implement an alternative source term (AST) for Arkansas Nuclear One, Unit 2 (ANO-2).
The staff, has reviewed and evaluated the information provided by Entergy, in its application.
Based on this review, it was determined that additional information is required to complete the staffs evaluation for the license amendment request. In order for the staff to meet the established due date, the licensee needs to respond to the request for additional information (RAI) within 45 days of the receipt of the RAI.
Thanks Kaly (N) Kalyanam1 PM, ANO-1 and 2 and Waterford 3 REQUEST FOR ADDITIONAL INFORMATION ON THE LICENSE AMENDMENT REQUEST TECHNICAL SPECIFICATION CHANGES AND ANALYSES RELATING TO USE OF ALTERNATIVE SOURCE TERM FOR ENTERGY OPERATIONS, INC.
ARKANSAS NUCLEAR ONE, UNIT 2 DOCKET NUMBER: 50-368
- 1. Are any non-safety related systems and components credited in the alternate source term analyses?
If so, a) Please describe the independence (electrical and physical separation) of these systems from the safety-related systems. Also, please provide a detailed discussion on how a fault on the non-Class 1E electrical circuit will not propagate to the Class 1E electrical circuit.
b) Please describe the redundancy of these systems and how these systems meet the single failure criterion.
c) Please describe how the operators will be notified (e.g., control room annunciators) in the event that these systems and components become inoperable.
d) Describe seismic qualifications of these systems and components.
- 2. Are any loads being added to the Arkansas Nuclear One emergency diesel generators (EDGs)? If so, describe how the loads will impact the capability and capacity of the EDGs. Also, please describe the changes, if any, to the EDG loading sequence to support this license amendment request (LAR).
- 3. Please provide a list and description of components being added to the Environmental Qualification program (10 CFR 50.49) due to this LAR. Also, please confirm that these components are qualified for the environmental conditions they are expected to be exposed to.
- 1. Describe the methodology used to verify that the minimum possible post-LOCA sump pH remains greater than 7.0. Specifically, please describe how the following parameters were accounted for in the calculation.
- a. What is the maximum, beginning of cycle, boron concentration in the reactor coolant and borated water storage tank?
- b. What is the minimum volume of water assumed in the calculation of post-LOCA sump pH?
- c. What is the minimum quantity of buffering agent contained in the baskets?
- d. What is the buffering agent used at ANO-2 (trisodium phosphate or sodium tetraborate)?
- e. What assumptions are made for the dissolution time of the buffering agent?
- f. Describe the analysis used to determine strong acid concentrations in the sump for a period of 30 days post-LOCA. Include a description of the calculations for hydrochloric acid, generated by radiolytic decomposition of Hypalon cable
insulation, and nitric acid, produced by irradiation of water and air in the containment.
- 2. How do the calculations for the proposed AST sump pH analysis differ from the previous calculation of sump pH?
- 3. Provide the time dependant sump pH profile for the full duration of the LOCA analysis.
E-mail Properties Mail Envelope Properties ()
Subject:
RAI on the ANO-2 LAR to implement AST (ME3678)
Sent Date: 7/15/2010 1:24:09 PM Received Date: 7/15/2010 1:35:00 PM From: Kalyanam, Kaly Created By: Kaly.Kalyanam@nrc.gov Recipients:
DBICE@entergy.com (BICE, DAVID B)
Tracking Status: None RCLARK@entergy.com (CLARK, ROBERT W)
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 22246 7/15/2010 Options Expiration Date:
Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received:
