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MONTHYEARML0925906132009-09-30030 September 2009 Plan for the Scoping and Screening Methodology Regulatory Audit Regarding the Palo Verde Nuclear Generating Station, Units 1, 2, and 3 License Renewal Application Review (TAC Nos. ME0254 - ME0256) Project stage: Other ML0927405912009-09-30030 September 2009 E-mail Nrr/De/Eeeb Concerning Review of Palo Verde License Renewal - No RAI Project stage: Approval ML0927502372009-11-0303 November 2009 Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application Project stage: RAI ML0928900112009-11-12012 November 2009 Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application Project stage: RAI ML0930902462009-11-18018 November 2009 Plan for the Aging Management Program Audit Regarding the Palo Verde Nuclear Generating Station, Units 1, 2, & 3 License Renewal Application Review (TAC Nos. ME0254, ME0255, ME0256) Project stage: Other ML0932004132009-12-0404 December 2009 Correction to Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application Project stage: RAI ML1015302192009-12-16016 December 2009 APS 2004 Pump Installation Completion Report for PVNGS Firing Range Well. Filed with Adwr on Aug. 3, 2004 (PV-406) PVNGS Project stage: Request ML0933800512009-12-23023 December 2009 Request for Additional Information, License Renewal Application Project stage: RAI ML0934908302009-12-29029 December 2009 Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application) Project stage: RAI ML1002702902010-01-13013 January 2010 Follow-up Clarification to the Response to September 30, 2009, RAI Regarding Severe Accident Mitigation Alternatives for the Review of the PVNGS License Renewal Application, Amendment No. 7 Project stage: Supplement ML0932902982010-01-14014 January 2010 RAI for the Review of the PVNGS Units 1, 2, and 3, License Renewal Application Project stage: RAI ML1001503782010-01-28028 January 2010 Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application (TAC Nos. ME0254, ME0255, ME0256) Project stage: RAI ML1002700692010-02-19019 February 2010 RAI for the Review of the Palo Verde Nuclear Generating Station Units 1, 2, 3, LRA (Tac Nos. ME0254, ME0255, & ME0256) Project stage: RAI ML1006106042010-02-19019 February 2010 Response to December 29, 2009, Request for Additional Information Regarding Aging Management Program Audit for Review of License Renewal Application Amendment No. 9 Project stage: Request ML1003602962010-03-0202 March 2010 Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application (TAC Nos. ME0254, ME0255, and ME0256) Project stage: RAI ML1001506182010-03-12012 March 2010 Summary of Telephone Conference Call Held Between NRC and Arizona Public Service Company, Concerning Containment Coatings Pertaining to the Palo Verde, Units 1, 2, and 3, LRA Project stage: Other ML1013802152010-04-0101 April 2010 License Renewal - April 1 Webinar on Metal Fatigue Arizona Public Service Company Presentation Slides Project stage: Other ML1002212962010-04-0707 April 2010 Audit Report Regarding the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application (TAC Nos. ME0254, ME0255, ME0256) Project stage: Other ML1009603672010-04-0808 April 2010 Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application (TAC Nos. ME0254, ME0255, and ME0256) Project stage: RAI ML1009804822010-04-20020 April 2010 05/06/10 Notice of Public Working Meeting with Arizona Public Service to Discuss Issues Related to the Palo Verde Nuclear Generating Station License Renewal Application Project stage: Meeting ML1011603572010-04-28028 April 2010 Request for Additional Information - Palo Verde License Renewal Review Project stage: RAI ML1013102272010-04-29029 April 2010 Response to April 8, 2010, Request for Additional Information Regarding Security Assessments, for the Review of the PVNGS License Renewal Application Project stage: Request ML1013401002010-06-0202 June 2010 License Renewal - Request for Additional Information Concerning Metal Fatigue Project stage: RAI ML1012703882010-06-25025 June 2010 License Renewal - May 6, 2010 Public Meeting - Arizona Public Service Handout Project stage: Meeting ML1013408012010-06-25025 June 2010 License Renewal - May 6, 2010 Public Meeting Summary Project stage: Meeting ML1013702892010-07-0606 July 2010 Summary of Tele Conf Call Held on 4/23/10, Between the USNRC and Arizona Public Service, Concerning the Palo Verde Generating Nuclear Station, Units 1, 2, and 3, License Renewal Application Project stage: Other ML1017402172010-07-13013 July 2010 Scoping and Screening Audit Report for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application (TACs ME0254, ME0255, and ME0256) Project stage: Other ML1013408292010-07-14014 July 2010 License Renewal - Summary of Conference Calls on Metal Fatigue Project stage: Other ML1018908912010-07-21021 July 2010 Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application Project stage: RAI ML1021504162010-08-0606 August 2010 Letter - Palo Verde License Renewal - Transmittal Letter with Safety Evaluation Report with Open Items to Arizona Public Service Company Project stage: Approval ML1023102542010-08-24024 August 2010 Forthcoming Meeting to Discuss the Draft Supplemental Environmental Impact Statement (Dseis) for Palo Verde Nuclear Generating Station ML1021801672010-08-31031 August 2010 NUREG-1437 Supplement 43, Dfc Generic Environmental Impact Statement for License Renewal of Nuclear Plants Regarding Palo Verde Nuclear Generating Station (Draft for Comment) Project stage: Draft Other ML1025600222010-09-27027 September 2010 Request for Additional Information for the Review of the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal Application (TAC Nos. ME0254, ME0255, and ME0256) Project stage: RAI ML1020305002010-10-15015 October 2010 Summary of Tele Conf Call Held on 7/21/10, Btw the USNRC and Arizona Public Service Company, Concerning Draft Request for Additional Information Pertaining to the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, License Renewal App Project stage: Draft RAI ML1034909162011-01-11011 January 2011 Safety Evaluation Report Related to the License Renewal of Palo Verde Nuclear Generating Station, Units 1, 2, and 3 (Tac Nos. ME0254, ME0255, ME0256) Project stage: Approval ML1104905402011-03-0303 March 2011 Correction of Typographical Error in Safety Evaluation Report Related to License Renewal (TAC Nos. ME0254, ME0255, and ME0256) Project stage: Approval ML1108719552011-04-21021 April 2011 License Renewal - Appendices a, B, C, and D to the Renewed Operating License for Unit 1 (NPF-41) Project stage: Acceptance Review ML1108004782011-04-21021 April 2011 Notice of Issuance of Renewed Facility Operating License Nos. NPF-41, NPF-51, NPF-74 for Additional 20-Year Period - FRN Project stage: Request ML1108004552011-04-21021 April 2011 Issuance of Renewed Facility Operating Licenses for Palo Verde Nuclear Generating Station (TAC Numbers ME0254, ME0255, and ME0256) Project stage: Approval 2010-04-20
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Category:Letter
MONTHYEARIR 05000528/20244042024-08-0808 August 2024 Cybersecurity Inspection Report 05000528/2024404, 05000529/2024404 and 05000530/2024404 ML24213A3232024-07-31031 July 2024 Transmittal of Relief Request (RR) No. 71: Re-Submittal of RR-30 ML24213A3292024-07-31031 July 2024 Transmittal of Relief Request (RR) No. 72: Re-Submittal of RR-39 IR 05000528/20240022024-07-29029 July 2024 Integrated Inspection Report 05000528/2024002 and 05000529/2024002 and 05000530/2024002 ML24173A3302024-07-24024 July 2024 Pressurizer Surge Line Inspection Program ML24159A4702024-07-17017 July 2024 Issuance of Amendment Nos. 223, 223, and 223 Revision to Technical Specifications 3.5.1 and 3.5.2 Using Risk Informed Process for Evaluations ML24198A0662024-07-16016 July 2024 Program Review - Simulator Testing Methodology ML24193A3442024-07-11011 July 2024 Fourth 10-Year Interval, Second Period Owner’S Activity Report Number 3R24 ML24129A0522024-07-0303 July 2024 Review of the Spring 2023 Steam Generator Tube Inspection Report ML24177A3212024-06-25025 June 2024 Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Transportable Storage Canisters Identification Numbers AMZDFX180, AMZDFX181, AMZDFX182 Vertical Concrete Cask Identification Nu IR 05000528/20240042024-06-25025 June 2024 Notification of Inspection (NRC Inspection Report 05000528/2024004, 05000529/2024004, 05000530/2024004) ML24170A9962024-06-18018 June 2024 Response to Second Request for Additional Information to Revise Technical Specifications (TS) 3.5.1, Safety Injection Tanks (Sits) – Operating, TS 3.5.2, Safety Injection Tanks (Sits) – Shutdown a ML24129A2062024-06-14014 June 2024 Issuance of Amendment Nos. 222, 222, and 222 Revision to Technical Specifications to Adopt TSTF-266-A ML24159A0262024-06-0303 June 2024 Annual Report of Guarantee of Payment of Deferred Premium ML24135A2482024-05-14014 May 2024 Response to Second Request for Additional Information to Proposed Method to Manage Environmentally Assisted Fatigue for the Pressurizer Surge Line ML24164A2582024-05-0909 May 2024 10-PV-2024-04 Post-Exam Comments ML24128A2702024-05-0707 May 2024 Docket Nos. Stn 50-528/529/530 - Response to NRC Regulatory Issue Summary (RIS) 2024-01, Preparation and Scheduling of Operator Licensing Examinations ML24129A1482024-05-0707 May 2024 and Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Casks with Applied Changes IR 05000528/20240012024-05-0202 May 2024 Independent Spent Fuel Storage Installation, Integrated Inspection Report 05000528/2024001, 05000529/2024001, 05000530/2024001, 07200044/2024001, and Exercise of Enforcement Discretion ML24119A0022024-04-26026 April 2024 2023 Annual Environmental Operating Report ML24116A2082024-04-24024 April 2024 Independent Spent Fuel Storage Installation, Annual Radioactive Effluent Release Report 2023 IR 05000528/20244012024-04-22022 April 2024 Security Baseline Inspection Report 05000528/2024401 and 05000529/2024401 and 05000530/2024401 (Cover Letter) IR 05000528/20243012024-04-22022 April 2024 NRC Initial Operator Licensing Examination Approval 05000528/2024301, 05000529/2024301, and 05000530/2024301 ML24112A0012024-04-19019 April 2024 Core Operating Limits Report, Revision 32 ML24108A1982024-04-16016 April 2024 Independent Spent Fuel Storage Installation - Registration of Dry Spent Fuel Storage Casks with Applied Changes Authorized by an Amended Certificate of Compliance ML24103A2482024-04-12012 April 2024 Emergency Core Cooling System Performance Evaluation Models, 10 CFR 50.46(a)(3)(ii) Annual Report for 2023 ML24131A0972024-04-10010 April 2024 Annual Radiological Environmental Operating Report 2023 ML24096A2202024-04-0505 April 2024 Transmittal of Technical Specification Bases Revision 78 ML24032A1542024-04-0303 April 2024 Exemption from Select Requirements of 10 CFR Part 73 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting) ML24089A1892024-03-28028 March 2024 Present Levels of Financial Protection ML24068A2522024-03-0808 March 2024 License Amendment Request to Revise Technical Specifications 3.5.1 and 3.5.2 Using Risk-Informed Process for Evaluations ML24066A0472024-03-0606 March 2024 Response to Request for Additional Information to Revise Technical Specifications (TS) 3.5.1, Safety Injection Tanks (Sits) – Operating, TS 3.5.2, Safety Injection Tanks (Sits) – Shutdown and TS IR 05000528/20240122024-03-0404 March 2024 Age-Related Degradation Inspection Report 05000528/2024012, 05000529/2024012 and 05000530/2024012 IR 05000528/20230062024-02-28028 February 2024 Annual Assessment Letter for Palo Verde Nuclear Generating Station, Units 1, 2 and 3 Report 05000528/2023006 and 05000529/2023006 and 05000530/2023006 ML24053A3972024-02-22022 February 2024 License Renewal - Alloy 600 Management Program Plan ML24047A3632024-02-16016 February 2024 Independent Spent Fuel Storage Installation - Registration of Dry Spent Fuel Transportable Storage Canisters Identification Numbers AMZDFX177, AMZDFX178, AMZDFX179 Vertical Concrete Cask Identification No. AMZDNE179, AMZDNE178 IR 05000528/20230042024-02-12012 February 2024 Integrated Inspection Report Report 05000528/2023004 and 05000529/2023004 and 05000530/2023004 ML24019A2012024-01-19019 January 2024 Fourth 10-Year Interval, Second Period Owners Activity Report Number 1R24 ML24019A1362024-01-18018 January 2024 Inservice Inspection Request for Information ML24012A2452024-01-12012 January 2024 Response to Request for Additional Information to Proposed Method to Manage Environmentally Assisted Fatigue for the Pressurizer Surge Line ML24010A1532024-01-10010 January 2024 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection ML23341A0062023-12-21021 December 2023 Project Manager Assignment IR 05000528/20230112023-12-18018 December 2023 License Renewal Inspection Report 05000528/2023011 ML23335A0782023-11-30030 November 2023 Independent Spent Fuel Storage Installation - Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML23325A1602023-11-17017 November 2023 Supplemental Submittal - Relief Request 70 Proposed Alternatives for Pressurizer Lower Shell Temperature Nozzle IR 05000528/20234032023-11-13013 November 2023 NRC Security Inspection Report 05000528 2023403, 05000529 2023403, 05000530 2023403 (Full Report) ML23311A2082023-11-0909 November 2023 Reassignment of U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch IV ML23299A3052023-10-26026 October 2023 Response to Request for Additional Information Relief Request 70 Proposed Alternatives for Pressurizer Lower Shell Temperature Nozzle IR 05000528/20230032023-10-17017 October 2023 Integrated Inspection Report 05000528 2023003 and 05000529 2023003 and 05000530 2023003 ML23270B9232023-09-28028 September 2023 Notification of Age-Related Degradation Inspection (05000528/2024012, 05000529/2024012, and 05000530/2024012) and Request for Information 2024-08-08
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML24143A1112024-05-20020 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 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 ML24114A2812024-04-19019 April 2024 Request for Additional Information (RAI-10150-R1) 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 ML23031A3392023-01-31031 January 2023 In-service Inspection Request for Information 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 ML22272A3252022-09-29029 September 2022 Licensed Operator Positive Fitness-For-Duty Test Request for Additional Information ML22209A1752022-07-28028 July 2022 Inservice Inspection Request for Information ML22187A2632022-07-0606 July 2022 Notification of Inspection (NRC IR 05000528/2022004, 05000529/2022004 and 05000530/2022004) and Request for Information ML22067A2292022-03-0202 March 2022 Inservice Inspection Inspection PWR Request for Information 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 ML22035A3302022-02-10010 February 2022 Requests for Confirmation of Information for Exemption to Delete Diverse Auxiliary Feedwater Actuation System Based on Risk-Informed Process for Evaluations ML22025A4012022-01-0303 January 2022 March 2022 Emergency Preparedness Program Inspection - Request for Information ML21245A2222021-09-0101 September 2021 Request for Information ML21200A2392021-07-20020 July 2021 Docs Request AC - AA August 2021 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) ML21064A2372021-03-0303 March 2021 ISI Request for Information Rls ML21042B9692021-02-18018 February 2021 Notification of NRC Design Bases Assurance Inspection and Initial Request for Information 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 ML21011A1972021-01-12012 January 2021 Unit 2, and Unit 3 - Notification of an NRC Fire Protection Baseline Inspection (NRC Inspection Report 05000528/2021012, 05000529/2021012 and 05000530/2021012) and Request for Information ML20227A0992020-08-14014 August 2020 Licensed Operator Positive Fitness-For-Duty Test Request for Additional Information ML20118D1362020-04-28028 April 2020 Licensed Operator Positive Fitness-For-Duty Test Request for Additional Information ML20049A0992020-02-14014 February 2020 Notification of Cyber Security Inspection (NRC Inspection Report 05000528/2020401; 05000529/2020401; and 05000530/2020401) and Request for Information ML20049A0252020-02-12012 February 2020 NRR E-mail Capture - Palo Verde Nuclear Generating Station, Unit 1 - Official RAIs for License Amendment Request Associated with Changes to Emergency Plan Staffing Requirements ML20021A3172020-01-21021 January 2020 NRR E-mail Capture - Palo Verde Nuclear Generating Station, Unit 1 - Official RAIs for Relief Request 64, Impractical Examinations for the Third 10-Year ISI Interval ML19317D0782019-11-13013 November 2019 NRR E-mail Capture - Palo Verde 1 - Requests for Additional Information on Unit 1 21st Refueling Outage Steam Generator Tube Inspection Report ML19234A3202019-08-29029 August 2019 Redacted - Request for Additional Information for Amendment and Exemption Request to Support the Implementation of Framatome High Thermal Performance Fuel (EPID L-2018-LLA-0194; EPID L-2018-LLE-0010) ML19155A1842019-05-30030 May 2019 NRR E-mail Capture - Palo Verde Nuclear Generating Station, Unit 3 - Mvib Official RAIs for RR-63, Impractical Examinations for the Third 10-Year ISI Interval ML19095A6552019-04-0404 April 2019 NRR E-mail Capture - Palo Verde Nuclear Generating Station, Unit 3 - Mphb Official RAIs for RR-63, Impractical Examinations for the Third 10-Year ISI Interval ML19044A7342019-02-13013 February 2019 NRR E-mail Capture - Palo Verde1, 2, and 3 - Official Requests for Additional Information for RR 62, Third and Fourth 10-Year ISI Intervals, Proposed Alternative - Pressurizer Heat Sleeve Repairs ML19008A3612019-01-0808 January 2019 NRR E-mail Capture - Palo Verde 1, 2, and 3 - Official RAIs for LAR Associated with Response Time Testing of Pressure Transmitters ML18341A0252018-12-0303 December 2018 Notification of NRC Design Bases Assurance Inspection (Teams)(05000528/2019011, 05000529/2019011, and 05000530/2019011) and Initial Request for Information ML18271A0392018-10-0202 October 2018 Non Proprietary - Supplemental Information Needed for Acceptance of Requested License Amendments and Exemptions Implementation of Framatome High Thermal Performance Fuel (Epids L-2018-LLA-0194 and L-2018-LLE-0010) ML18221A5102018-08-23023 August 2018 Request for Additional Information License Amendment Request to Adopt Risk-Informed Completion Times (CAC Nos. MF6576, MF6577, and MF6578; EPID: L-2015-LLA-0001) ML18229A3132018-08-17017 August 2018 NRR E-mail Capture - Request for Additional Information Relief Request 58: Impractical Examinations for the Third 10-Year Inservice Inspection Interval Arizona Public Service Company Palo Verde Nuclear Generation Station, Unit 2 - Second Se ML18227A8672018-08-15015 August 2018 NRR E-mail Capture - Request for Additional Information Relief Request 58: Impractical Examinations for the Third 10-Year Inservice Inspection Interval Arizona Public Service Company Palo Verde Nuclear Generation Station, Unit 2 ML18124A0112018-05-0303 May 2018 NRR E-mail Capture - Palo Verde 1, 2, and 3 - Official Eeob RAIs for TSTF-505 (4b) LAR (CAC Nos. MF6576, MF6577, and MF6578; EPID L-2015-LLA-0001) ML18099A0072018-04-0606 April 2018 NRR E-mail Capture - Palo Verde 1, 2, and 3 - Official RAIs for 10 CFR 50.69 LAR (CAC Nos. MF9971, MF9972, and MF9973; EPID L-2017-LLA-0276) ML18094B1122018-04-0404 April 2018 NRR E-mail Capture - Palo Verde 1, 2, and 3 - Final RAIs for TSTF-505 (Initiative 4b) LAR (CAC Nos. MF6576, MF6577, and MF6578: EPID L-2015-LLA-0001) ML18066A7032018-03-0707 March 2018 Notification of Nrc Design Bases Assurance Inspection (Programs) 05000528/2018011, 05000529/2018011, and 05000530/2018011 Initial Request for Information ML17248A0162017-08-31031 August 2017 NRR E-mail Capture - Palo Verde 1, 2, and 3 - Final RAI for RRs PRR-03, PRR-04 and PRR-05, Pump Testing ML17107A0052017-04-14014 April 2017 NRR E-mail Capture - Palo Verde 1, 2, and 3 - Ngf LAR and Exemption RAIs (CAC Nos. MF8076 to MF8081) ML17082A4462017-03-28028 March 2017 PVNGS Units 1, 2, and 3 Transition to CE 16x16 Ngf - Draft RAIs Rev 3 ML17003A0182017-01-0202 January 2017 NRR E-mail Capture - Palo Verde, Unit 3 - Draft RAIs for the Second Emergency LAR Associated with EDG 3B Failure 2024-05-20
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Text
April 28, 2010 Mr. Randall K. Edington Executive Vice President, Nuclear Mail Station 7602 Arizona Public Service Company P.O. Box 52034 Phoenix, AZ 85072-2034
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3, LICENSE RENEWAL APPLICATION (TAC NOS. ME0254, ME0255, AND ME0256)
Dear Mr. Edington:
By letter dated December 11, 2008, as supplemented by letter dated April 14, 2009, Arizona Public Service Company (APS) submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54 to renew Operating License Nos. NPF-41, NPF-51, and NPF-74 for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3, respectively. The staff is reviewing the information contained in the license renewal application and has identified in the enclosure areas where additional information is needed to complete the review. Further requests for additional information may be issued in the future.
A mutually agreeable date for your response, as discussed with Angela Krainik of APS staff, was determined to be within 30 days of the issuance of this letter. If you have any questions, please contact me at 301-415-1906 or by e-mail at Lisa.Regner@nrc.gov.
Sincerely,
/RA/
Lisa M. Regner, Sr. Project Manager Projects Branch 2 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-528, 50-529, and 50-530
Enclosure:
As stated cc w/encl: See next page
ML101160357 OFFICE PM:RPB2:DLR LA:DLR BC:RPB2:DLR PM:RPB2:DLR NAME LRegner SFigueroa DWrona LRegner DATE 04/27/2010 04/27/2010 04/27/2010 04/28/2010
Letter to R. Edington from L. Regner dated April 28, 2010
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3, LICENSE RENEWAL APPLICATION (TAC NOS. ME0254, ME0255 AND ME0256)
DISTRIBUTION:
HARD COPY:
DLR RF E-MAIL:
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Palo Verde Nuclear Generating Station, Units 1, 2 and 3 cc:
Mr. Steve Olea Mr. John C. Taylor, Director, Nuclear Arizona Corporation Commission Generation 1200 W. Washington Street El Paso Electric Company Phoenix, AZ 85007 340 E. Palm Lane, Suite 310 Phoenix, AZ 85004 Mr. Douglas Kent Porter, Senior Counsel Southern California Edison Company Mr. James Ray Law Department, Generation Resources Public Service Company of New Mexico P.O. Box 800 2401 Aztec NE, MS Z110 Rosemead, CA 91770 Albuquerque, NM 87107-4224 Senior Resident Inspector Mr. Geoffrey M. Cook U.S. Nuclear Regulatory Commission Southern California Edison Company P.O. Box 40 5000 Pacific Coast Highway, Bldg. D21 Buckeye, AZ 85326 San Clemente, CA 92672 Regional Administrator, Region IV Mr. Robert Henry U.S. Nuclear Regulatory Commission Salt River Project 612 E. Lamar Blvd., Suite 400 6504 E. Thomas Road Arlington, TX 76011-4125 Scottsdale, AZ 85251 Chairman Mr. Jeffrey T. Weikert Maricopa County Board of Supervisors Assistant General Counsel 301 W. Jefferson, 10th Floor El Paso Electric Company Phoenix, AZ 85003 Mail Location 167 123 W. Mills Mr. Aubrey V. Godwin, Director El Paso, TX 79901 Arizona Radiation Regulatory Agency 4814 S. 40th Street Mr. Eric Tharp Phoenix, AZ 85040 Los Angeles Department of Water & Power Southern California Public Power Authority Mr. Ron Barnes, Director P.O. Box 51111, Room 1255-C Regulatory Affairs Los Angeles, CA 90051-0100 Palo Verde Nuclear Generating Station Mail Station 7636 Mr. Brian Almon P.O. Box 52034 Public Utility Commission Phoenix, AZ 85072-2034 William B. Travis Building P.O. Box 13326 Mr. Dwight C. Mims, Vice President 1701 N. Congress Avenue Regulatory Affairs and Plant Improvement Austin, TX 78701-3326 Palo Verde Nuclear Generating Station Mail Station 7605 P.O. Box 52034 Phoenix, AZ 85072-2034
PALO VERDE NUCLEAR GENERATING STATION (PVNGS)
LICENSE RENEWAL APPLICATION (LRA)
REQUEST FOR ADDITIONAL INFORMATION (RAI)
RAI 3.3.2.2.3-1
Background
The staff reviewed Section 3.3.2.2.3.2 of the LRA against the criteria in the Standard Review Plan-License Renewal (SRP-LR), Section 3.3.2.2.3.2, which states that stress corrosion cracking (SCC) could occur in stainless steel and stainless clad steel heat exchanger components exposed to treated water greater than 60 °C (140 °F). The SRP-LR recommends further evaluation of a plant-specific aging management program to ensure this aging effect is adequately managed and notes that acceptance criteria are described in Appendix A.1 of the SRP-LR.
Issue The staff noted that, contrary to the applicants statement, the related item applies to both boiling water reactors and pressurized water reactors. Furthermore, in reviewing LRA Table 3.3.2-30, the staff noted that the sample cooler heat exchanger is listed with an aging mechanism of cracking for stainless steel exposed to secondary water. According to LRA Table 3.0-1, Mechanical Environments, secondary water is described as treated water; however, the item description in Table 3.3.2-30 did not indicate the temperature. As such, it was unclear to the staff that this item is not applicable to PVNGS, as stated by the applicant.
Request Provide justification as to why SRP-LR Section 3.3.2.2.3.2 is not applicable or, if it is applicable, explain how aging will be managed.
RAI 4.5-3
Background
In Section 4.5 of the LRA, the applicant provided Table 4.5-1, Tendon Regression Analysis Input Data. The table contains lift-off forces of individual tendons used in the regression analysis. The review of the table identified the following anomalies:
a) Only the shop end force is provided for tendons H21-04 (3rd year surveillance), V07, and V015.
b) The lift-off force for tendon H21-04 was measured in the 3rd year surveillance and again in the 5th year.
c) The Unit 3 dome horizontal tendon lift-off average forces are greater than the wall horizontal lift-off average forces. In some cases they are greater by nearly 100 kilo-pounds-force (i.e., H13-45, H32-42, and H21-43).
ENCLOSURE
Issue The anomalies in items (a) and (c) could influence the slope of regression analysis conducted to demonstrate that the predicted prestress forces remain above their respective minimum required values (MRVs) through the period of extended operation. In particular, the staff is concerned with the influence of the higher Unit 3 dome horizontal tendon forces on the combined wall and dome trend line (Figure 4.5-3), which shows the least margin. Item (b) may not satisfy IWL-2521, which requires that tendons examined during an inspection be selected on a random basis from a sample of tendons that have not been examined in earlier examinations.
Request The applicant is requested to explain the anomalies and confirm that they have no impact on its conclusion that regression analysis trend lines indicate that tendon prestress will remain above the MRV through the period of extended operation.
RAI B2.1.28-3
Background
In response to RAI B2.1.28-2, dated February 19, 2010, the applicant stated that the frequency of inspection for the ASME Section XI, Subsection IWL Aging Management Program (AMP) is consistent with ASME Section XI Subsection IWL, paragraph IWL-2421, Sites with Multiple Plants. This paragraph allows inspection intervals of every ten years, staggered, so that at least one unit is inspected every five years. Therefore, the applicant concluded that the existing program is consistent with ASME Section XI Subsection IWL and the Generic Aging Lessons Learned (GALL) Report, and no exception is required.
Issue ASME Section III, Subsection IWL, Subarticle IWL-2421 allows the inspection frequency to increase to ten years for examinations required by IWL-2524 and IWL-2525. However, IWL-2524 and IWL-2525 requirements are for examination of tendon anchorage areas, and corrosion protection medium and free water in the post-tensioning system, respectively.
IWL-2410(a) Inservice Inspection Schedule of Concrete provides the inspection periodicity of concrete surface exams and states, Concrete shall be examined in accordance with IWL-2510 at 1, 3, and 5 years following the completion of the containment Structural Integrity Test CC-6000 and every 5 years thereafter. IWL-2510 Surface Examination Requirements provides the requirements for concrete surface examinations.
Request Provide the basis for containment concrete surface visual examination inspection frequency of ten years.
RAI 3.5.2.3-4
Background
For the component type, supports ASME 2 and 3, LRA Table 3.5.2-14 credits the ASME Section XI, Subsection IWF Program (B2.1.29) to manage loss of material for carbon and stainless steel components in 1) a raw water environment, and 2) a fuel oil environment.
The LRA states that these environments are not in NUREG-1801 for carbon and stainless steel components.
Issue The components in the environments identified above may have limited accessibility. It is not clear to the staff how the ASME Section XI Subsection IWF Program will inspect the components to ensure the aging effect is being managed.
Request Explain how the ASME Section XI Subsection IWF Program will manage the effect of aging on carbon and stainless steel components in 1) a raw water environment, and 2) a fuel oil environment that have limited accessibility.
RAI 3.3.2-2
Background
In the LRA, Tables 3.3.2.2 Spent Fuel Pool Cooling and Cleanup System, 3.3.2.7 Essential Spray Pond System, and 3.3.2.20 Diesel Fuel Oil Storage and Transfer System, there are aging management review (AMR) result lines for stainless steel or carbon steel closure bolting in environments of treated borated water, raw water, and fuel oil, respectively. The AMR results credit the Bolting Integrity Aging Management Program (AMP) with managing the aging effect-loss of preload for bolts in these wet environments.
Issue The LRA does not provide sufficient information for the staff to understand how the Bolting Integrity AMP can effectively manage loss of preload for bolts in wet environments where simple visual techniques during normal system walk downs could detect signs of closure bolting loosening, such as indications of leakage around a flange or gasket which would otherwise be noticed in a dry environment.
Request a) Explain what features or activities of the Bolting Integrity AMP will manage the aging effect of loss of preload for closure bolting that is in a wet environment and why the credited features or activities are adequate to ensure that loss of the subject bolts intended function(s) does not occur during the period of extended operation.
b) Clarify whether there are any indirect indicators that might be indicative of loss of bolting preload for closure bolting in each of these wet environments and their associated systems.