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| | issue date = 01/31/2008 | | | issue date = 01/31/2008 |
| | title = Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter, NRR-07-004, Dated March 15, 2007 - U3R13 | | | title = Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter, NRR-07-004, Dated March 15, 2007 - U3R13 |
| | author name = Mims D C | | | author name = Mims D |
| | author affiliation = Arizona Public Service Co | | | author affiliation = Arizona Public Service Co |
| | addressee name = | | | addressee name = |
Revision as of 15:58, 12 July 2019
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MONTHYEARML0706603652007-02-21021 February 2007 2/21/2007 E-Mail to M. Markley, NRR/DORL/LPL4, from M. Glenn, Arizona Public Service Company, Subject: Revised Leakage Monitoring Commitment, Related to Confirmatory Action Letter Project stage: Other ML0706602982007-03-15015 March 2007 Confirmatory Action Letter Alloy 82/182 Pressurizer Butt Welds Project stage: Other ML0724102032007-08-0202 August 2007 Mitigation of Alloy 600/82/182 Pressurizer Butt Welds in 2008 Project stage: Other ML0803903142008-01-31031 January 2008 Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter, NRR-07-004, Dated March 15, 2007 - U3R13 Project stage: Other 2007-03-15
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Category:Letter
MONTHYEARML24262A0972024-09-23023 September 2024 Notification of Post-Approval Site Inspection for License Renewal and Request for Information Inspection (05000529/2024011) ML24241A2782024-08-28028 August 2024 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 ML24241A2542024-08-28028 August 2024 Inservice Inspection Request for Information ML24240A2682024-08-27027 August 2024 Transmittal of Technical Specification Bases Revision 79 IR 05000528/20240052024-08-22022 August 2024 Updated Inspection Plan for Palo Verde Nuclear Generating Station - Units 1, 2, and 3 (Report 05000528/2024005, 05000529/2024005, 05000530/2024005) ML24208A0612024-08-20020 August 2024 Issuance of Amendment Nos. 224, 224, and 224 Regarding Revision to Technical Specifications 3.5.1, 3.5.2 and 3.6.5 IR 05000528/20244042024-08-0808 August 2024 Cybersecurity Inspection Report 05000528/2024404, 05000529/2024404 and 05000530/2024404 ML24213A3292024-07-31031 July 2024 Transmittal of Relief Request (RR) No. 72: Re-Submittal of RR-39 ML24213A3232024-07-31031 July 2024 Transmittal of Relief Request (RR) No. 71: Re-Submittal of RR-30 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) ML24177A3222024-06-25025 June 2024 Invalid Specified System Actuation of Train B Emergency Diesel Generator 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 IR 05000528/20243012024-06-17017 June 2024 NRC Examination Report 05000528/2024301; 05000529/2024301; 05000530/2024301 ML24129A2062024-06-14014 June 2024 Issuance of Amendment Nos. 222, 222, and 222 Revision to Technical Specifications to Adopt TSTF-266-A ML24157A3392024-06-0505 June 2024 Inoperable Boron Dilution Alarm System(Bdas) with Technical Specification Violation ML24159A0262024-06-0303 June 2024 Annual Report of Guarantee of Payment of Deferred Premium ML24144A2772024-05-23023 May 2024 Valid Specified System Actuations of Unit 2 Train B Emergency Diesel Generator and Train B Auxiliary Feedwater 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 ML24129A1482024-05-0707 May 2024 and Independent Spent Fuel Storage Installation Registration of Dry Spent Fuel Storage Casks with Applied Changes 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 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 ML24109A0712024-04-22022 April 2024 NRC Initial Operator Licensing Examination Approval 05000528/2024301, 05000529/2024301, and 05000530/2024301 IR 05000528/20244012024-04-22022 April 2024 Security Baseline Inspection Report 05000528/2024401 and 05000529/2024401 and 05000530/2024401 (Cover Letter) 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 Owner’S 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 2024-09-23
[Table view] Category:Confirmatory Action Letter (CAL)
MONTHYEARML0824102002008-09-16016 September 2008 Completion of Actions for Unit 2 and Closure of Confirmatory Action Letter NRR-07-004 ML0822503512008-08-0404 August 2008 60-Day After Plant Restart Letter in Response to First Revised NRC Order EA-03-009, Item Iv.E and Confirmatory Action Letter, NRR-07-004, Dated March 15, 2007 - U2R14 ML0803903142008-01-31031 January 2008 Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter, NRR-07-004, Dated March 15, 2007 - U3R13 ML0728200012007-10-31031 October 2007 Completion of Actions for Confirmatory Action Letter NRR-07-004 ML0729205522007-10-19019 October 2007 EA-07-162, Arizona Public Service Company, Confirmatory Order Modifying License (Effective Immediately) Office of Investigations Report No. 4-2007-009 ML0726904222007-09-19019 September 2007 Aps'S 60-Day After Plant Restart Letter in Response to First Revised NRC Order EA-03-009, Item Iv.E and Confirmatory Action Letter, NRR-07-004, Dated March 15, 2007 - U1R13 ML0724200042007-09-0707 September 2007 Evaluation of Finite Element Analysis in Support of Alloy 82/182 Pressurizer Butt Weld Inspections in 2008 as Provided by Confirmatory Action Letter NRR-07-004 ML0724102032007-08-0202 August 2007 Mitigation of Alloy 600/82/182 Pressurizer Butt Welds in 2008 ML0717205262007-06-21021 June 2007 Confirmatory Action CAL-4-07-004 Letter Dated 6/21/07 ML0706602982007-03-15015 March 2007 Confirmatory Action Letter Alloy 82/182 Pressurizer Butt Welds 2008-09-16
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CAL NRR-07-004 mAWW Dwight C. Mims Mail Station 7605 Palo Verde Nuclear Vice President Tel. 623-393-5403 P.O. Box 52034 Generating Station Regulatory Affairs and Plant Improvement Fax 623-393-6077 Phoenix, Arizona 85072-2034 102-05807-DCM/RJR January 31, 2008 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Dear Sirs:
Subject:
Palo Verde Nuclear Generating Station (PVNGS)Unit 3 Docket No. STN 50-530 Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter, NRR-07-004, Dated March 15, 2007 -U3R13 (TAC NO. MD4171)By letter dated March 15, 2007, the NRC issued to APS a Confirmatory Action Letter (CAL) for PVNGS Units 1, 2, and 3. The CAL confirmed commitments made by APS regarding Alloy 82/182 butt welds of the Palo Verde pressurizers.
This letter is to notify the NRC that the commitment made in APS letter 102-05640, dated January 31, 2007 (ADAMS Accession No. ML070430378), regarding the mitigation of the Palo Verde Unit 3 pressurizer Alloy 600/82/182 butt welds and post-mitigation inspections were completed during U3R1 3. The results of these inspections were initially reported to the NRC Project Manager in an e-mail dated December 13, 2007, within 14 days of completion of the overlays as required by the stated action in APS letter 102-05641, dated February 08, 2007 (ADAMS Accession No. ML070470525).
The information provided below satisfies our commitment in APS letter 102-05640.
The ultrasonic examinations of the weld overlay installations in Unit 3 were completed on December 12, 2007. The seven full-structural weld overlays (FSWOL), which included the Unit 3 pressurizer spray, surge and four safety nozzle dissimilar metal welds and the surge line to hot leg nozzle dissimilar metal welds, were examined using the liquid penetrant (PT) and phased array ultrasonic examination (UT) methods as required by Relief Request 36. The PT and UT of all seven FSWOLs resulted in no rejectable indications.
Therefore, no repairs were needed.A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway
- South Texas Project 0Wolf Creek ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Completion of Full Structural Weld Overlay in Response to Confirmatory Action Letter, NRR-07-004, Dated March 15, 2007 -U3R13 (TAC NO. MD4171)Page 2 As a result of the completion of the mitigation of the Palo Verde Unit 3 pressurizer Alloy 600/82/182 butt welds discussed above, APS has satisfied the commitment to mitigate these welds and is no longer performing enhanced RCS leakage monitoring in Palo Verde Unit 3.No new commitments are being made to the NRC by this letter. Should you have any questions, please contact Glenn A. Michael at (623) 393-5750.Sincerely, DCM/TNW/RJR/
cc: E. E. Collins Jr. NRC Region IV Regional Administrator M. T. Markley NRC NRR Project Manager G. G. Warnick NRC Senior Resident Inspector for PVNGS