|
|
| (6 intermediate revisions by the same user not shown) |
| Line 2: |
Line 2: |
| | number = ML12248A150 | | | number = ML12248A150 |
| | issue date = 09/04/2012 | | | issue date = 09/04/2012 |
| | title = E-mail Draft Request for Additional Information, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Revision 3 (TAC Nos. ME8160, ME8161, and ME8162) | | | title = E-mail Draft Request for Additional Information, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Revision 3 |
| | author name = Gibson L K | | | author name = Gibson L |
| | author affiliation = NRC/NRR/DORL/LPLIV | | | author affiliation = NRC/NRR/DORL/LPLIV |
| | addressee name = Robert R | | | addressee name = Robert R |
| Line 9: |
Line 9: |
| | docket = 05000528, 05000529, 05000530 | | | docket = 05000528, 05000529, 05000530 |
| | license number = NPF-041, NPF-051, NPF-074 | | | license number = NPF-041, NPF-051, NPF-074 |
| | contact person = Gibson L K | | | contact person = Gibson L |
| | case reference number = TAC ME8160, TAC ME8161, TAC ME8162 | | | case reference number = TAC ME8160, TAC ME8161, TAC ME8162 |
| | document type = E-Mail | | | document type = E-Mail |
| | page count = 2 | | | page count = 2 |
| | project = TAC:ME8160, TAC:ME8161, TAC:ME8162 | | | project = TAC:ME8160, TAC:ME8161, TAC:ME8162 |
| | stage = Other | | | stage = Draft RAI |
| }} | | }} |
|
| |
|
| =Text= | | =Text= |
| {{#Wiki_filter:From:Gibson, LaurenTo:Robert.Roehler@aps.comSubject:Draft Request for Additional Information Re: License Amendment Request to eliminate the use of the termCORE ALTERATIONS (TAC Nos. ME8160, ME8161, and ME8162)Date:Tuesday, September 04, 2012 11:03:00 AMAttachments:draft RAI.docxRob, | | {{#Wiki_filter:From: Gibson, Lauren To: Robert.Roehler@aps.com |
|
| |
|
| By a letter dated March 8, 2012, Arizona Public Service Co. (APS, the licensee) submitteda license amendment (LAR) for Palo Verde Nuclear Generating Station (AgencywideDocuments Access and Management System (ADAMS) Accession No. ML12076A045). The proposed amendment would eliminate the use of the term CORE ALTERATION fromthe technical specifications. | | ==Subject:== |
| The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the informationprovided by the licensee and determined that the additional information identified in theattachment is needed in order for the NRC staff to complete its review. | | Draft Request for Additional Information Re: License Amendment Request to eliminate the use of the term CORE ALTERATIONS (TAC Nos. ME8160, ME8161, and ME8162) |
| | Date: Tuesday, September 04, 2012 11:03:00 AM Attachments: draft RAI.docx |
| | : Rob, By a letter dated March 8, 2012, Arizona Public Service Co. (APS, the licensee) submitted a license amendment (LAR) for Palo Verde Nuclear Generating Station (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12076A045). |
| | The proposed amendment would eliminate the use of the term CORE ALTERATION from the technical specifications. |
| | The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the information provided by the licensee and determined that the additional information identified in the attachment is needed in order for the NRC staff to complete its review. |
| Please contact me if you would like to have a clarifying conference call. | | Please contact me if you would like to have a clarifying conference call. |
| Thank you, Lauren | | Thank you, Lauren Lauren K. Gibson Project Manager Columbia Generating Station Palo Verde Nuclear Generating Station Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission (301) 415-1056 |
|
| |
|
| Lauren K. GibsonProject ManagerColumbia Generating StationPalo Verde Nuclear Generating StationDivision of Operating Reactor LicensingU.S. Nuclear Regulatory Commission(301) 415-1056
| | DRAFT REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST TO ELIMINATE THE USE OF THE TERM CORE ALTERATION IN THE TECHNICAL SPECIFICATIONS ARIZONA PUBLIC SERVICE, ET AL PALO VERDE NUCLEAR GENERATING STATION DOCKET NUMBERS 50-528, 50-529, AND 50-530 By a letter dated March 8, 2012 (Agencywide Document Acess and Management System (ADAMS) Accession No. ML12076A045), Arizona Public Service Co. (APS, the licensee) submitted a license amendment (LAR) for Palo Verde Nuclear Generating Station. The proposed amendment would eliminate the use of the term CORE ALTERATION in the Technical Specifications. |
| | | The NRC staff has reviewed the submitted information and determined that the information below is needed for the staff to complete its evaluation. |
| DRAFT REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST TO ELIMINATE THE USE OF THE TERM CORE ALTERATION IN THE TECHNICAL SPECIFICATIONS ARIZONA PUBLIC SERVICE, ET AL PALO VERDE NUCLEAR GENERATING STATION DOCKET NUMBERS 50-528, 50-529, AND 50-530 By a letter dated March 8, 2012 (Agencywide Document Acess and Management System (ADAMS) Accession No. ML12076A045), Arizona Public Service Co. (APS, the licensee) submitted a license amendment (LAR) for Palo Verde Nuclear Generating Station. The proposed amendment would eliminate the use of the term CORE ALTERATION in the Technical Specifications. | | : 1. The proposed REQUIRED ACTION A.1 of TS 3.9.2 states that with one SRM inoperable, the operator is required to suspend positive reactivity additions. This REQUIRED ACTION is inconsistent with guidance in TS 3.9.2 of NUREG-1432, Combustion Engineering Standard Technical Specifications. For Condition A of TS 3.9.2 of NUREG-1432 (Rev 4), the REQUIRED ACTION states that if one required SRM is inoperable, the operators are required to suspend: (A.1) positive reactivity additions, and (A.2) introduction of coolant into the RCS with boron concentration less than required to meet the minimum boron concentration of LCO 3.9.1 must be suspended immediately. |
| The NRC staff has reviewed the submitted information and determined that the information below is needed for the staff to complete its evaluation. 1. The proposed REQUIRED ACTION A.1 of TS 3.9.2 states that with one SRM inoperable, the operator is required to suspend positive reactivity additions. This REQUIRED ACTION is inconsistent with guidance in TS 3.9.2 of NUREG-1432, Combustion Engineering Standard Technical Specifications. For Condition A of TS 3.9.2 of NUREG-1432 (Rev 4), the REQUIRED ACTION states that if one required SRM is inoperable, the operators are required to suspend: (A.1) positive reactivity additions, and (A.2) introduction of coolant into the RCS with boron concentration less than required to meet the minimum boron concentration of LCO 3.9.1 must be suspended immediately. The proposed TS 3.9.2 does not adopt REQUIRED ACTION A.2 stated above. Suspending introduction of coolant inventory from sources that have a boron concentration less than that what would be required in the RCS for minimum refueling boron concentration could prevent the boron dilution event from occurring. Address the acceptability of the proposed TS 3.9.2 without inclusion of the REQUIRED ACTION A.2 specified in STS 3.9.2 of NUREG-1432 (Rev. 4). In particular, please explain what is captured by "suspend positive reactivity additions" for Palo Verde. | | The proposed TS 3.9.2 does not adopt REQUIRED ACTION A.2 stated above. |
| }} | | Suspending introduction of coolant inventory from sources that have a boron concentration less than that what would be required in the RCS for minimum refueling boron concentration could prevent the boron dilution event from occurring. |
| | Address the acceptability of the proposed TS 3.9.2 without inclusion of the REQUIRED ACTION A.2 specified in STS 3.9.2 of NUREG-1432 (Rev. 4). In particular, please explain what is captured by suspend positive reactivity additions for Palo Verde.}} |
Letter Sequence Draft RAI |
|---|
TAC:ME8160, Eliminate Use of Term Core Alterations in Actions and Notes (Withdrawn, Closed) TAC:ME8161, Eliminate Use of Term Core Alterations in Actions and Notes (Withdrawn, Closed) TAC:ME8162, Eliminate Use of Term Core Alterations in Actions and Notes (Withdrawn, Closed) |
|
MONTHYEARML12076A0452012-03-0808 March 2012
Request for Amendment to Eliminate the Use of the Term Core Alteration in the Technical Specifications
Project stage: Request
ML1213103802012-05-10010 May 2012
Acceptance Review Email, License Amendment Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Revision 3
Project stage: Acceptance Review
ML12248A1502012-09-0404 September 2012
E-mail Draft Request for Additional Information, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Revision 3
Project stage: Draft RAI
ML12250A7202012-09-11011 September 2012
Request for Additional Information, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Revision 3
Project stage: RAI
ML12286A3302012-10-11011 October 2012
Response to Request for Additional Information Regarding License Amendment Request to Eliminate the Use of the Term Core Alteration in the Technical Specifications
Project stage: Response to RAI
ML12341A1292012-12-0505 December 2012
E-mail, Draft Request for Additional Information, Round 2, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev. 3 (TAC ME8160/ME8162)
Project stage: Draft RAI
ML12347A0402012-12-19019 December 2012
Request for Additional Information, Round 2, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev. 3 (TAC ME8160-ME8162)
Project stage: RAI
ML12362A2922013-01-0303 January 2013
Request for Additional Information, Round 3, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev. 3 (TAC ME8160-ME8162)
Project stage: RAI
ML13039A0132013-01-31031 January 2013
Response to Request for Additional Information Regarding License Amendment Request to Eliminate the Use of the Term Core Alteration in the Technical Specifications
Project stage: Response to RAI
ML13072A1822013-03-13013 March 2013
Email, Draft Request for Additional Information, Round 4, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev. 3 (TAC ME8160-ME8162)
Project stage: Draft RAI
ML13127A2432013-05-0808 May 2013
5/29/13 Meeting Via Conference Call with Arizona Public Service Company to Discuss Palo Verde Request to Revise Technical Specifications; Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev 3 (TAC ME8160-ME81
Project stage: Meeting
ML13150A0812013-06-0303 June 2013
Request for Additional Information, Round 4, Request to Revise Technical Specifications to Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev. 3
Project stage: RAI
ML13154A4502013-06-26026 June 2013
Summary of Meeting Via Conference Call with Arizona Public Service Co. to Discuss Palo Verde Request to Revise Technical Specifications; Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev 3 (TAC ME8160-ME816
Project stage: Meeting
ML13210A2382013-07-25025 July 2013
Response to Request for Additional Information Regarding License Amendment Request to Eliminate the Use of the Term Core Alteration in the Technical Specifications
Project stage: Response to RAI
ML14051A1032014-02-13013 February 2014
Withdrawal of Request for Amendment to Eliminate the Use of the Term Core Aleration in the Technical Specifications
Project stage: Request
ML14059A1782014-03-0707 March 2014
Withdrawal of License Amendment Request to Revise Technical Specifications; Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev 3
Project stage: Withdrawal
ML14059A1812014-03-0707 March 2014
FRN - Withdrawal of License Amendment Request to Revise Technical Specifications; Eliminate Use of the Term Core Alteration Consistent w/TSTF-471 and NUREG-1432, Rev 3
Project stage: Withdrawal
2013-01-03
[Table View] |
|
|---|
Category:E-Mail
MONTHYEARML24267A2172024-09-23023 September 2024
(E-Mail) Palo Verde Nuclear Generating Station Units 1, 2, and 3 License Amendment Request to Revise the Technical Specifications 3.5.1 and 3.5.2 Safety Injection Tank Pressure Bands, and to Use GOTHIC Code
ML24257A1012024-09-11011 September 2024
Request for Additional Information License Renewal Commitment for AMP of Alloy 600 Components
ML24248A2632024-09-0404 September 2024
Acceptance Review of Palo Verde Nuclear Generating Station, Units 1, 2, and 3, Relief Request (RR) No. 71: Re?Submittal of RR?30
ML24242A2812024-08-26026 August 2024
RR72 Acceptance 08/27/24 - La Jr
ML24221A2382024-08-0606 August 2024
Change in Estimated Review Schedule and Level of Effort for Palo Verde Units 1, 2, and 3
ML24143A1112024-05-20020 May 2024
Draft 2nd Round Request for RAIs Concerning LAR to Modify LCO for TS 3.5.2, LCO for TS 3.6.5, and Surveillance Requirements 3.5.1.2 and 3.5.2.2 for TS 3.5.1 and TS 3.5.2
ML24138A1112024-05-16016 May 2024
Draft 2nd Round Request for Additional Information (Rais) Concerning License Amendment Request (LAR) to Modify Limiting Condition for Operation (LCO) for Technical Specification (TS) 3.5.2
ML24123A2002024-05-0101 May 2024
(E-Mail) Draft 2nd Round Request for Additional Information Concerning License Amendment Request to Modify Limiting Condition for Operation (LCO) for Technical Specification (TS) 3.5.2, LCO for TS 3.6.5, 3.5.1.2 and 3.5.2.2 for TS 3.5.1, a
ML24120A2612024-05-0101 May 2024
Email Acceptance Review of Requested Licensing Action License Renewal Commitment 23A, Alloy 600 Management Program Plan
ML24114A2812024-04-19019 April 2024
Request for Additional Information (RAI-10150-R1)
ML24103A1222024-04-11011 April 2024
– Acceptance of Requested Licensing Action Re_ License Amendment Request to Revise Technical Specifications 3
ML24011A1002024-01-10010 January 2024
March 2024 Emergency Preparedness Program Inspection - Request for Information
ML23334A1612023-11-30030 November 2023
NRR E-mail Capture - Palo Verde 1, 2, and 3 - RAIs Associated with License Renewal Commitment for Pressurizer Surge Line Welds Inspection Program to Manage Environmentally Assisted Fatigue
ML23334A0072023-11-29029 November 2023
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Official RAIs for LAR That Revises TSs 3.5.1, SITs - Operating; 3.5.2, SIT Shutdown; 3.6.5, Containment Air Temperature; and SRs for TS 3.5.1, SITs Operating
ML23298A1232023-10-25025 October 2023
NRR E-mail Capture - Palo Verde, Unit 1 - RAIs for Relief Request 70, Proposed Alternatives for Pressurizer Lower Shell Temperature Nozzle
ML23243B0082023-08-31031 August 2023
NRR E-mail Capture - Action: Opportunity to Review and Comment on a New NRC Information Collection, 10 CFR Part 50.55a, Codes and Standards (3150-XXXX)
ML23233A0132023-08-18018 August 2023
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review of License Renewal Commitment for Pressurizer Surge Line Welds Inspection Program to Manage Environmentally Assisted Fatigue
ML23220A0512023-08-0303 August 2023
NRR E-mail Capture - Re Palo Verde 1, 2, and 3 - SUNSI Review of UFSAR, Rev. 22
ML23202A0162023-07-20020 July 2023
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review of LAR to Revise TSs 3.5.1, SITs - Operating; 3.5.2, SIT Shutdown; 3.6.5, Containment Air Temperature; and SRs for TS 3.5.1, SITs Operating
ML23143A1332023-05-23023 May 2023
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review of LAR Revising TS 3.3.11 to Adopt TSTF-266-A, Rev. 3, Eliminate the Remote Shutdown System Table of Instrumentation and Controls
ML23130A0132023-05-10010 May 2023
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review for Authorized Use of Mururoa Supplied Air Suits (Models V4F1 and MTH2) Pursuant to 10 CFR 20.1703 and 10 CFR 20.1705
ML23017A0932023-01-17017 January 2023
NRR E-mail Capture - Palo Verde - Acceptance of License Amendment Request Regarding Adoption of TSTF-107, Separate Control Rods That Are Untrippable Versus Inoperable (L-2022-LLA-0181)
ML23013A0632023-01-13013 January 2023
NRR E-mail Capture - Palo Verde Unit 1 -Request for Additional Information - U1R23 Inspection Summary Report for Steam Generator Tubing
ML22348A1672022-12-14014 December 2022
March 2023 Emergency Preparedness Exercise Inspection - Request for Information
ML22339A2372022-12-0505 December 2022
NRR E-mail Capture - Palo Verde Unit 1 Request for Additional Information - U1R23 Inspection Summary Report for Steam Generator Tubing
ML22173A0682022-06-17017 June 2022
Email Concurrence on SE Input for Columbia Pltr LAR
ML22167A1872022-06-16016 June 2022
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Revised Acceptance Review of LAR to Adopt TSTF-567, Add Containment Sump TS to Address GSI-191 Issues
ML22136A0922022-05-16016 May 2022
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review of LAR to Adopt TSTF-487-A, Revision 1, Relocate DNB Parameters to the COLR
ML22075A1902022-03-16016 March 2022
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review of LAR to Adopt TSTF-567, Add Containment Sump TS to Address GSI-191 Issues
ML22055A5842022-02-24024 February 2022
NRR E-mail Capture - Palo Verde, Unit 3 - Final RAIs for 22nd Refueling Outage (Spring 2021) Steam Generator Tube Inservice Inspection Report
ML22034A0132022-02-0202 February 2022
NRR E-mail Capture - Palo Verde, Unit 2 - Verbal Approval of RR-69 to Extend Containment Tendon Inspection from 2/8/22 to 6/8/22
ML22032A0312022-01-31031 January 2022
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review for an Exemption Regarding Elimination of Dafas Using RIPE Process
ML22025A4012022-01-0303 January 2022
March 2022 Emergency Preparedness Program Inspection - Request for Information
ML21333A1982021-11-19019 November 2021
NRC Review of PVNGS Training Needs Analysis and Training Required by Condition I of the Confirmatory Order EA-20-054
ML21306A1882021-10-18018 October 2021
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Second Pre-submittal Meeting for the Proposed Exemption to Eliminate Dafas Using RIPE Process
ML21272A0592021-09-28028 September 2021
NRR E-mail Capture - Palo Verde 1, 2, and 3 - SUNSI Review of UFSAR, Rev. 21
ML21264A1352021-09-17017 September 2021
NRR E-mail Capture - Palo Verde 1, 2 and 3 - Acceptance Review of LAR Associated with Permanent Extension of Containment ILRT Frequency to 15 Years (Type a) and CIV Leak Rate Test Frequency to 75 Months (Type C)
ML21237A0762021-08-25025 August 2021
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review of RR-67, Request for Alternative Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection
ML21228A0082021-08-16016 August 2021
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review of an LAR for Administrative Changes to Technical Specifications
ML21228A1042021-08-12012 August 2021
RR-67, Request for Alternative Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection (EPID L-2021-LLR-0050) (Email)
ML21237A5172021-08-10010 August 2021
Email to PV Licensee and Palo Verde Nuclear Generating Station, Units 1, 2 and 3 - Notification of Inspection of the Licensees Implementation Industry Initiative Associated with the Open Phase Condition (NRC Bulletin 2012-01) and Request Fo
ML21160A1442021-06-0909 June 2021
NRR E-mail Capture - Palo Verde 1 and, 2 - Acceptance Review for Order Approving Transfers of Control of Licenses for Minority Interests Subject to Expiring Leases
ML21154A0082021-05-26026 May 2021
NRR E-mail Capture - Palo Verde 1, 2 and 3 - Official RAIs for LAR Associated with Permanent Extension of Containment ILRT Frequency to 15 Years (Type a) and CIV Leak Rate Test Frequency to 75 Months (Type C)
ML21146A3342021-05-14014 May 2021
ISFSI - Final Package for an Order Associated with Indirect Transfers of Control of Licenses from Pnm to Avangrid
ML21132A2372021-05-12012 May 2021
NRR E-mail Capture - Palo Verde 1, 2, and 3, and ISFSI - Final Package for an Order Associated with Indirect Transfers of Control of Licenses from Pnm to Avangrid
ML21103A3632021-04-13013 April 2021
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Acceptance Review for Indirect Transfer of Control of Licenses Pursuant to 10 CFR 50.80 and 10 CFR 72.50
ML21064A2372021-03-0303 March 2021
ISI Request for Information Rls
ML21053A0262021-02-22022 February 2021
NRR E-mail Capture - Palo Verde 1, 2 and 3 - Acceptance Review of LAR Associated with Permanent Extension of Containment ILRT Frequency to 15 Years (Type a) and CIV Leak Rate Test Frequency to 75 Months (Type C)
ML21043A1462021-02-11011 February 2021
NRR E-mail Capture - Palo Verde 1, 2, and 3 - Official RAI for an Order Associated with Indirect License Transfer from Public Service Company of New Mexico to Avangrid, Inc
ML21023A0212021-01-13013 January 2021
PVNGS PI&R Request for Information RA
2024-09-04
[Table view] |
Text
From: Gibson, Lauren To: Robert.Roehler@aps.com
Subject:
Draft Request for Additional Information Re: License Amendment Request to eliminate the use of the term CORE ALTERATIONS (TAC Nos. ME8160, ME8161, and ME8162)
Date: Tuesday, September 04, 2012 11:03:00 AM Attachments: draft RAI.docx
- Rob, By a letter dated March 8, 2012, Arizona Public Service Co. (APS, the licensee) submitted a license amendment (LAR) for Palo Verde Nuclear Generating Station (Agencywide Documents Access and Management System (ADAMS) Accession No. ML12076A045).
The proposed amendment would eliminate the use of the term CORE ALTERATION from the technical specifications.
The U.S. Nuclear Regulatory Commission (NRC) staff has reviewed the information provided by the licensee and determined that the additional information identified in the attachment is needed in order for the NRC staff to complete its review.
Please contact me if you would like to have a clarifying conference call.
Thank you, Lauren Lauren K. Gibson Project Manager Columbia Generating Station Palo Verde Nuclear Generating Station Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission (301) 415-1056
DRAFT REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST TO ELIMINATE THE USE OF THE TERM CORE ALTERATION IN THE TECHNICAL SPECIFICATIONS ARIZONA PUBLIC SERVICE, ET AL PALO VERDE NUCLEAR GENERATING STATION DOCKET NUMBERS 50-528, 50-529, AND 50-530 By a letter dated March 8, 2012 (Agencywide Document Acess and Management System (ADAMS) Accession No. ML12076A045), Arizona Public Service Co. (APS, the licensee) submitted a license amendment (LAR) for Palo Verde Nuclear Generating Station. The proposed amendment would eliminate the use of the term CORE ALTERATION in the Technical Specifications.
The NRC staff has reviewed the submitted information and determined that the information below is needed for the staff to complete its evaluation.
- 1. The proposed REQUIRED ACTION A.1 of TS 3.9.2 states that with one SRM inoperable, the operator is required to suspend positive reactivity additions. This REQUIRED ACTION is inconsistent with guidance in TS 3.9.2 of NUREG-1432, Combustion Engineering Standard Technical Specifications. For Condition A of TS 3.9.2 of NUREG-1432 (Rev 4), the REQUIRED ACTION states that if one required SRM is inoperable, the operators are required to suspend: (A.1) positive reactivity additions, and (A.2) introduction of coolant into the RCS with boron concentration less than required to meet the minimum boron concentration of LCO 3.9.1 must be suspended immediately.
The proposed TS 3.9.2 does not adopt REQUIRED ACTION A.2 stated above.
Suspending introduction of coolant inventory from sources that have a boron concentration less than that what would be required in the RCS for minimum refueling boron concentration could prevent the boron dilution event from occurring.
Address the acceptability of the proposed TS 3.9.2 without inclusion of the REQUIRED ACTION A.2 specified in STS 3.9.2 of NUREG-1432 (Rev. 4). In particular, please explain what is captured by suspend positive reactivity additions for Palo Verde.
