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| | number = ML15257A297 | | | number = ML15257A297 |
| | issue date = 09/11/2015 | | | issue date = 09/11/2015 |
| | title = Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678) | | | title = NRR E-mail Capture - Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678) |
| | author name = Watford M M | | | author name = Watford M |
| | author affiliation = NRC/NRR/DORL/LPLIV-1 | | | author affiliation = NRC/NRR/DORL/LPLIV-1 |
| | addressee name = Weber T N | | | addressee name = Weber T |
| | addressee affiliation = Arizona Public Service Co | | | addressee affiliation = Arizona Public Service Co |
| | docket = 05000529 | | | docket = 05000529 |
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| =Text= | | =Text= |
| {{#Wiki_filter:1 NRR-PMDAPEm Resource From: Watford, Margaret Sent: Friday, September 11, 2015 4:04 PM To: Thomas.N.Weber@aps.com Cc: Michael.Dilorenzo@aps.com | | {{#Wiki_filter:NRR-PMDAPEm Resource From: Watford, Margaret Sent: Friday, September 11, 2015 4:04 PM To: Thomas.N.Weber@aps.com Cc: Michael.Dilorenzo@aps.com |
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| ==Subject:== | | ==Subject:== |
| Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678)Attachments: | | Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678) |
| Request for Additional Information on PVNGS, Un it 2 Exigent LAR to Amendment SR 3.1.5.3 for CEA 88 (MF6678).pdf | | Attachments: Request for Additional Information on PVNGS, Unit 2 Exigent LAR to Amendment SR 3.1.5.3 for CEA 88 (MF6678).pdf |
| | : Tom, By letter dated September 4, 2015 (Agencywide Document Access and Management System (ADAMS) Accession No. ML15247A518), Arizona Public Service Company (APS or the licensee) submitted a license amendment request to the U.S. Nuclear Regulatory Commission (NRC) to revise the Technical Specifications (TS) Surveillance Requirement (SR) 3.1.5.3 for Palo Verde Nuclear Generating Station, Unit 2. The proposed amendment would add a Note to SR 3.1.5.3, Control Element Assembly (CEA) freedom of movement surveillance, to eliminate exercising CEA 88 for the remainder of operating Cycle 19 for Unit 2, currently scheduled to end in fall 2015. |
| | Based on the review of the amendment request, the NRC staff has determined that additional information is required regarding the exclusion of CEA 88 from SR 3.1.5.3. Please see the formal request for additional information (RAI) in the attached document. A clarification call was held on September 11, 2015 to ensure APS understood the RAIs. In the clarification call, APS agreed to submit the response to the RAIs on September 15, 2015. |
| | Thank you, Maggie Watford Project Manager, Plant Licensing Branch IV-I Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission Phone: 301-415-1233 Email: Margaret.Watford@nrc.gov 1 |
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| Hearing Identifier: NRR_PMDA Email Number: 2377 Mail Envelope Properties (Margaret.Watford@nrc.gov20150911160300) | | Hearing Identifier: NRR_PMDA Email Number: 2377 Mail Envelope Properties (Margaret.Watford@nrc.gov20150911160300) |
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| ==Subject:== | | ==Subject:== |
| Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678) Sent Date: 9/11/2015 4:03:33 PM Received Date: 9/11/2015 4:03:00 PM From: Watford, Margaret Created By: Margaret.Watford@nrc.gov Recipients: "Michael.Dilorenzo@aps.com" <Michael.Dilorenzo@aps.com> Tracking Status: None "Thomas.N.Weber@aps.com" <Thomas.N.Weber@aps.com> Tracking Status: None Post Office: Files Size Date & Time MESSAGE 1377 9/11/2015 4:03:00 PM Request for Additional Information on PVNGS, Unit 2 Exigent LAR to Amendment SR 3.1.5.3 for CEA 88 (MF6678).pdf 102059 | | Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678) |
| | Sent Date: 9/11/2015 4:03:33 PM Received Date: 9/11/2015 4:03:00 PM From: Watford, Margaret Created By: Margaret.Watford@nrc.gov Recipients: |
| | "Michael.Dilorenzo@aps.com" <Michael.Dilorenzo@aps.com> |
| | Tracking Status: None "Thomas.N.Weber@aps.com" <Thomas.N.Weber@aps.com> |
| | Tracking Status: None Post Office: |
| | Files Size Date & Time MESSAGE 1377 9/11/2015 4:03:00 PM Request for Additional Information on PVNGS, Unit 2 Exigent LAR to Amendment SR 3.1.5.3 for CEA 88 (MF6678).pdf 102059 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: |
| | Recipients Received: |
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| Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:
| | REQUEST FOR ADDITIONAL INFORMATION REQUEST TO ELIMINATE MOVEMENT OF CEA 88 FROM SR 3.1.5.3 FOR THE REMAINDER OF CYCLE 19 PALO VERDE NUCLEAR GENERATING STATION, UNIT 2 ARIZONA PUBLIC SERVICE COMPANY DOCKET NUMBER. 50-529 TAC NO. MF6678 By letter dated September 4, 2015 (Agencywide Document Access and Management System (ADAMS) Accession No. ML15247A518), Arizona Public Service Company (APS or the licensee) submitted a license amendment request to the U.S. Nuclear Regulatory Commission (NRC) to revise the Technical Specifications (TS) Surveillance Requirement (SR) 3.1.5.3 for Palo Verde Nuclear Generating Station, Unit 2. The proposed amendment would add a Note to SR 3.1.5.3, Control Element Assembly (CEA) freedom of movement surveillance, to eliminate exercising CEA 88 for the remainder of operating Cycle 19 for Unit 2, currently scheduled to end in fall 2015. |
| REQUEST FOR ADDITIONAL INFORMATION REQUEST TO ELIMINATE MOVEMENT OF CEA 88 FROM SR 3.1.5.3 FOR THE REMAINDER OF CYCLE 19 PALO VERDE NUCLEAR GENERATING STATION, UNIT 2 ARIZONA PUBLIC SERVICE COMPANY DOCKET NUMBER. 50-529 TAC NO. MF6678 | | Based on the review of the amendment request, the NRC staff has determined that additional information is required regarding the exclusion of CEA 88 from SR 3.1.5.3. |
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| By letter dated September 4, 2015 (Agencywide Document Access and Management System (ADAMS) Accession No. ML15247A518), Arizona Public Service Company (APS or the licensee) submitted a license amendment request to the U.S. Nuclear Regulatory Commission (NRC) to revise the Technical Specifications (TS) Surveillance Requirement (SR) 3.1.5.3 for Palo Verde Nuclear Generating Station, Unit 2. The proposed amendment would add a Note to SR 3.1.5.3, Control Element Assembly (CEA) freedom of movement surveillance, to eliminate exercising CEA 88 for the remainder of operating Cycle 19 for Unit 2, currently scheduled to end in fall 2015.
| | ===RAI 1=== |
| | The licensees amendment request states that the proposed amendment is necessary due to a degrading upper gripper coil (UGC). The licensee further noted in Section 3.1, Description/Justification, of the submittal that the coil will further degrade with continued use or if energized. The amendment states that administrative controls have been put in place to only energize the UGC if necessary through the remainder of Cycle 19. Please describe in detail what administrative controls are in place to prevent energizing the UGC and causing further degradation. |
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| Based on the review of the amendment request, the NRC staff has determined that additional information is required regarding the exclusion of CEA 88 from SR 3.1.5.3.
| | ===RAI 2=== |
| RAI 1 The licensee's amendment request states that the proposed amendment is necessary due to a degrading upper gripper coil (UGC). The licensee further noted in Section 3.1, "Description/Justification," of the submittal that "the coil will further degrade with continued use or if energized". The amendment states that administrative controls have been put in place to only energize the UGC if necessary through the remainder of Cycle 19. Please describe in detail what administrative controls are in place to prevent energizing the UGC and causing further degradation. | | The licensees submittal states in Section 3.1 that should an automatic CEA motion demand occur, the UGC for CEA 88 would re-energize and the CEA should move with its group. How do the administrative controls address the possible automatic CEA motion for CEA 88? What would cause an automatic motion of CEA 88 for the remainder of Cycle 19? |
| RAI 2 The licensee's submittal states in Section 3.1 that "should an automatic CEA motion demand occur, the UGC for CEA 88 would re-energize and the CEA should move with its group". How do the administrative controls address the possible automatic CEA motion for CEA 88? What would cause an automatic motion of CEA 88 for the remainder of Cycle 19?
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| | ===RAI 3=== |
| | The licensees amendment request states in Section 3.2 that a parametric study was conducted from 450 effective full power days (EFPD) to the end of Cycle 19 to determine the minimum SDM [shutdown margin] that would exist following a reactor trip assuming that both CEA 88 and the CEA of the highest reactivity worth fail to insert. Further, the application states |
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| RAI 3 The licensee's amendment request states in Section 3.2 that "a parametric study was conducted from 450 effective full power days (EFPD) to the end of Cycle 19 to determine the minimum SDM [shutdown margin] that would exist following a reactor trip assuming that both CEA 88 and the CEA of the highest reactivity worth fail to insert." Further, the application states that "the calculations were based on the same models and methods as those used to perform the TS surveillances." The NRC staff has the following questions:
| | that the calculations were based on the same models and methods as those used to perform the TS surveillances. The NRC staff has the following questions: |
| : 1. What date does 450 EFPD corresponds to in Cycle 19 (i.e. August 27, 2015)? | | : 1. What date does 450 EFPD corresponds to in Cycle 19 (i.e. August 27, 2015)? |
| : 2. Are the models and methods used to perform the TS surveillances and subsequently the parametric study used to determine the minimum SDM of 7.27 / NRC approved?}} | | : 2. Are the models and methods used to perform the TS surveillances and subsequently the parametric study used to determine the minimum SDM of 7.27 N/N NRC approved?}} |
Letter Sequence RAI |
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MONTHYEARML15247A5182015-09-0404 September 2015
Exigent License Amendment Request to Amend Technical Specification Surveillance Requirement 3.1.5.3 for Control Element Assembly 88 for the Remainder of Cycle 19
Project stage: Request
ML15257A2972015-09-11011 September 2015
NRR E-mail Capture - Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678)
Project stage: RAI
ML15252A1112015-09-11011 September 2015
Newspaper Notice, Exigent License Amendment Request to Amend Technical Specification Surveillance Requirement 3.1.5.3 for Control Element Assembly 88 for the Remainder of Cycle 19
Project stage: Other
ML15252A1102015-09-11011 September 2015
Letter, Newspaper Notice, Exigent License Amendment Request to Amend Technical Specification Surveillance Requirement 3.1.5.3 for Control Element Assembly 88 for the Remainder of Cycle 19
Project stage: Other
ML15258A8482015-09-15015 September 2015
Response to Request for Additional Information Regarding Exigent License Amendment Request to Amend Technical Specification Surveillance Requirement 3.1.5.3
Project stage: Response to RAI
ML15266A0052015-09-25025 September 2015
Issuance of Amendment No. 196, Revise Technical Specification Surveillance Requirement 3.1.5.3 for Control Element Assembly 88 for the Remainder of Cycle 19 (Exigent Circumstances)
Project stage: Approval
2015-09-15
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Category:E-Mail
MONTHYEARML24297A6212024-10-22022 October 2024
Request for Additional Information Relief Request (RR) No. 72: Re-Submittal of RR-39/ASME Code X1 IWC-3420, IWA-3300
ML24267A2172024-09-23023 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
2024-09-04
[Table view] |
Text
NRR-PMDAPEm Resource From: Watford, Margaret Sent: Friday, September 11, 2015 4:04 PM To: Thomas.N.Weber@aps.com Cc: Michael.Dilorenzo@aps.com
Subject:
Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678)
Attachments: Request for Additional Information on PVNGS, Unit 2 Exigent LAR to Amendment SR 3.1.5.3 for CEA 88 (MF6678).pdf
- Tom, By letter dated September 4, 2015 (Agencywide Document Access and Management System (ADAMS) Accession No. ML15247A518), Arizona Public Service Company (APS or the licensee) submitted a license amendment request to the U.S. Nuclear Regulatory Commission (NRC) to revise the Technical Specifications (TS) Surveillance Requirement (SR) 3.1.5.3 for Palo Verde Nuclear Generating Station, Unit 2. The proposed amendment would add a Note to SR 3.1.5.3, Control Element Assembly (CEA) freedom of movement surveillance, to eliminate exercising CEA 88 for the remainder of operating Cycle 19 for Unit 2, currently scheduled to end in fall 2015.
Based on the review of the amendment request, the NRC staff has determined that additional information is required regarding the exclusion of CEA 88 from SR 3.1.5.3. Please see the formal request for additional information (RAI) in the attached document. A clarification call was held on September 11, 2015 to ensure APS understood the RAIs. In the clarification call, APS agreed to submit the response to the RAIs on September 15, 2015.
Thank you, Maggie Watford Project Manager, Plant Licensing Branch IV-I Division of Operating Reactor Licensing U.S. Nuclear Regulatory Commission Phone: 301-415-1233 Email: Margaret.Watford@nrc.gov 1
Hearing Identifier: NRR_PMDA Email Number: 2377 Mail Envelope Properties (Margaret.Watford@nrc.gov20150911160300)
Subject:
Request for Additional Information - PVNGS, Unit 2 License Amendment Request for CEA 88 (MF6678)
Sent Date: 9/11/2015 4:03:33 PM Received Date: 9/11/2015 4:03:00 PM From: Watford, Margaret Created By: Margaret.Watford@nrc.gov Recipients:
"Michael.Dilorenzo@aps.com" <Michael.Dilorenzo@aps.com>
Tracking Status: None "Thomas.N.Weber@aps.com" <Thomas.N.Weber@aps.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 1377 9/11/2015 4:03:00 PM Request for Additional Information on PVNGS, Unit 2 Exigent LAR to Amendment SR 3.1.5.3 for CEA 88 (MF6678).pdf 102059 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
REQUEST FOR ADDITIONAL INFORMATION REQUEST TO ELIMINATE MOVEMENT OF CEA 88 FROM SR 3.1.5.3 FOR THE REMAINDER OF CYCLE 19 PALO VERDE NUCLEAR GENERATING STATION, UNIT 2 ARIZONA PUBLIC SERVICE COMPANY DOCKET NUMBER. 50-529 TAC NO. MF6678 By letter dated September 4, 2015 (Agencywide Document Access and Management System (ADAMS) Accession No. ML15247A518), Arizona Public Service Company (APS or the licensee) submitted a license amendment request to the U.S. Nuclear Regulatory Commission (NRC) to revise the Technical Specifications (TS) Surveillance Requirement (SR) 3.1.5.3 for Palo Verde Nuclear Generating Station, Unit 2. The proposed amendment would add a Note to SR 3.1.5.3, Control Element Assembly (CEA) freedom of movement surveillance, to eliminate exercising CEA 88 for the remainder of operating Cycle 19 for Unit 2, currently scheduled to end in fall 2015.
Based on the review of the amendment request, the NRC staff has determined that additional information is required regarding the exclusion of CEA 88 from SR 3.1.5.3.
RAI 1
The licensees amendment request states that the proposed amendment is necessary due to a degrading upper gripper coil (UGC). The licensee further noted in Section 3.1, Description/Justification, of the submittal that the coil will further degrade with continued use or if energized. The amendment states that administrative controls have been put in place to only energize the UGC if necessary through the remainder of Cycle 19. Please describe in detail what administrative controls are in place to prevent energizing the UGC and causing further degradation.
RAI 2
The licensees submittal states in Section 3.1 that should an automatic CEA motion demand occur, the UGC for CEA 88 would re-energize and the CEA should move with its group. How do the administrative controls address the possible automatic CEA motion for CEA 88? What would cause an automatic motion of CEA 88 for the remainder of Cycle 19?
RAI 3
The licensees amendment request states in Section 3.2 that a parametric study was conducted from 450 effective full power days (EFPD) to the end of Cycle 19 to determine the minimum SDM [shutdown margin] that would exist following a reactor trip assuming that both CEA 88 and the CEA of the highest reactivity worth fail to insert. Further, the application states
that the calculations were based on the same models and methods as those used to perform the TS surveillances. The NRC staff has the following questions:
- 1. What date does 450 EFPD corresponds to in Cycle 19 (i.e. August 27, 2015)?
- 2. Are the models and methods used to perform the TS surveillances and subsequently the parametric study used to determine the minimum SDM of 7.27 N/N NRC approved?
