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| {{#Wiki_filter:June 23, 2006Mr. James M. Levine Executive Vice President, Generation Mail Station 7602 Arizona Public Service Company P.O. Box 52034 Phoenix, AZ 85072-2034 | | {{#Wiki_filter:June 23, 2006 Mr. James M. Levine Executive Vice President, Generation Mail Station 7602 Arizona Public Service Company P.O. Box 52034 Phoenix, AZ 85072-2034 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 -REQUEST FOR ADDITIONAL INFORMATION REGARDING TECHNICAL SPECIFICATION AMENDMENT SUBMITTAL (TAC NOS. MC9425, MC9426, AND MC9427) | | PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 - |
| | REQUEST FOR ADDITIONAL INFORMATION REGARDING TECHNICAL SPECIFICATION AMENDMENT SUBMITTAL (TAC NOS. MC9425, MC9426, AND MC9427) |
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| ==Dear Mr. Levine:== | | ==Dear Mr. Levine:== |
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| By letter dated December 23, 2005, Arizona Public Service Company submitted a licenseamendment request for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. Therequest is to extend the allowed out-of-service time for one inoperable emergency diesel generator from 72 hours to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and revise TS 3.4.9,"Pressurizer," to delete the words which require that the two groups of pressurizer heaters be capable of being powered from an emergency power supply.The Nuclear Regulatory Commission (NRC) staff has reviewed the information provi ded anddetermined that additional information is required in order to complete the evaluation. The additional information being requested is enclosed. As discussed with Glenn Michael of your staff, the NRC staff is requesting a response within 30 days of the date of this letter.If you have any questions, please contact me at 301-415-3062.Sincerely, | | By letter dated December 23, 2005, Arizona Public Service Company submitted a license amendment request for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. The request is to extend the allowed out-of-service time for one inoperable emergency diesel generator from 72 hours to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and revise TS 3.4.9, "Pressurizer," to delete the words which require that the two groups of pressurizer heaters be capable of being powered from an emergency power supply. |
| /RA/Mel B. Fields, Senior Project ManagerPlant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket Nos: STN 50-528, STN 50-529 and STN 50-530 | | The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided and determined that additional information is required in order to complete the evaluation. The additional information being requested is enclosed. As discussed with Glenn Michael of your staff, the NRC staff is requesting a response within 30 days of the date of this letter. |
| | If you have any questions, please contact me at 301-415-3062. |
| | Sincerely, |
| | /RA/ |
| | Mel B. Fields, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: STN 50-528, STN 50-529 and STN 50-530 |
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| ==Enclosure:== | | ==Enclosure:== |
| Request for Additional Information cc w/encl: See next page June 23, 2006Mr. James M. Levine Executive Vice President, Generation Mail Station 7602 Arizona Public Service Company P.O. Box 52034 Phoenix, AZ 85072-2034 | | Request for Additional Information cc w/encl: See next page |
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| | June 23, 2006 Mr. James M. Levine Executive Vice President, Generation Mail Station 7602 Arizona Public Service Company P.O. Box 52034 Phoenix, AZ 85072-2034 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 -REQUEST FOR ADDITIONAL INFORMATION REGARDING TECHNICAL SPECIFICATION AMENDMENT SUBMITTAL (TAC NOS. MC9425, MC9426, AND MC9427) | | PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 - |
| | REQUEST FOR ADDITIONAL INFORMATION REGARDING TECHNICAL SPECIFICATION AMENDMENT SUBMITTAL (TAC NOS. MC9425, MC9426, AND MC9427) |
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| ==Dear Mr. Levine:== | | ==Dear Mr. Levine:== |
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| By letter dated December 23, 2005, Arizona Public Service Company submitted a licenseamendment request for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. Therequest is to extend the allowed out-of-service time for one inoperable emergency diesel generator from 72 hours to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and revise TS 3.4.9,"Pressurizer," to delete the words which require that the two groups of pressurizer heaters be capable of being powered from an emergency power supply.The Nuclear Regulatory Commission (NRC) staff has reviewed the information provi ded anddetermined that additional information is required in order to complete the evaluation. The additional information being requested is enclosed. As discussed with Glenn Michael of your staff, the NRC staff is requesting a response within 30 days of the date of this letter.If you have any questions, please contact me at 301-415-3062.Sincerely, | | By letter dated December 23, 2005, Arizona Public Service Company submitted a license amendment request for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. The request is to extend the allowed out-of-service time for one inoperable emergency diesel generator from 72 hours to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and revise TS 3.4.9, "Pressurizer," to delete the words which require that the two groups of pressurizer heaters be capable of being powered from an emergency power supply. |
| /RA/Mel B. Fields, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket Nos: STN 50-528, STN 50-529 and STN 50-530 | | The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided and determined that additional information is required in order to complete the evaluation. The additional information being requested is enclosed. As discussed with Glenn Michael of your staff, the NRC staff is requesting a response within 30 days of the date of this letter. |
| | If you have any questions, please contact me at 301-415-3062. |
| | Sincerely, |
| | /RA/ |
| | Mel B. Fields, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: STN 50-528, STN 50-529 and STN 50-530 |
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| ==Enclosure:== | | ==Enclosure:== |
| Request for Additional Information cc w/encl: See next pageDISTRIBUTION | | Request for Additional Information cc w/encl: See next page DISTRIBUTION: |
| :PUBLICLPLIV ReadingRidsNrrDorlDpr RidsNrrDorlLpl4RidsRgn4MailCenter (TPruett)RidsAcrsAcnwMailCenterRidsNrrLALFeizollahi RidsNrrPMMFieldsRidsOgcRpADAMS ACCESSION NO: ML061710465OFFICELPL4/PMLPL4/LALPL4/BCNAMEMFieldsLFeizollahiDTerao DATE06/22/0606/22/0606/23/06OFFICIAL RECORD COPY REQUEST FOR ADDITIONAL INFORMATION ARIZONA PUBLIC SERVICE COMPANY, ET AL.PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3DOCKET NOS. STN 50-528, STN 50-529, AND STN 50-530By letter dated December 23, 2005, Arizona Public Service Company submitted a licenseamendment request for the Palo Verde Nuclear Generating Station (PVNGS), Units 1, 2, and 3. The request is to extend the allowed out-of-service time (AOT) for one inoperable emergency diesel generator (EDG) from 72 hours to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and reviseTS 3.4.9, "Pressurizer," to delete the words which require that the two groups of pressurizerheaters be capable of being powered from an emergency power supply.The staff has reviewed the information provided and determined that the following additionalinformation is required in order to complete the evaluation. 1.Provide a qualitative or quantitative assessment of the following risk changes:-Information on risk-important components and configuration that will be affectedby the proposed extension, including Diesel Fuel Oil and Pressurizer Heaters.-Please provide a brief discussion and related information regarding the riskquantification tool.-Provide a discussion of the probabilistic risk assessment (PRA) quality, withemphasis on the system(s) and train(s) affected by the amendment. Thediscussion may include parametric uncertainty.-Please provide relative risk impact on incremental conditional core damageprobability (ICCDP) and incremental conditional large early release probability(ICLERP), using zero maintenance model versus regular model with baseline test/maintenance activities.-Are there any compensatory measures to mitigate the potential risk increasesdue to the amendment? If so, provide a discussion of the proposed compensatory measures and the associated benefit in both quantifiable and non-quantifiable terms.-Provide a brief discussion of the plant configuration control program and the on-line risk monitor.2.Your risk assessment in the submittal was based on internal events only. Discuss theimpact of potential external events and risk contributors, such as fire. 3.On page 17 of Enclosure 2 you state that your ICCDP would exceed the RegulatoryGuide (RG) guideline. The intent in making the comparison of the PRA results with RG 1.177 is to demonstrate, with reasonable assurance, that Principle 4 in the "Discussion" section of RG 1.177 is being met. Please discuss how Principle 4 is being met.4.In Table 3, Enclosure 2 of your request letter, you have recalculated internal event coredamage frequency based on your new reliability number. However, Table 2 of theenclosure clearly indicated that the plant risk (ICCDP) under the proposed amendmentwould increase by 6.44E-7 and 6.05E-7 for EDG A and EDG B, respectively. With this proposed TS change, it appears that the risk would increase by 6.44E-7/yr and 6.05E-7/yr, respectively, by annualizing the ICCDP for one year. Please explain these results.5.In your reliability recalculation presented in the second paragraph of page 17 ofEnclosure 2, the increase of the actual unavailability was assumed as 5.5 days insteadof the 10-day proposed extension. The 5.5 days of maintenance outage discussedimplies that the TS AOT will be used as a part of your routine online maintenanceactivities. Please explain.6.Please discuss the impacts of the uncertainties and risk contributors for both thoseexplicitly accounted for in the results and those that were not.7.According to your risk assessment, EDG A has higher risk importance than that ofEDG B. Please Explain.8.What are the risk assessment methodologies (such as FIVE) that you have employedfor fire? Have you considered providing fire watch during the proposed AOT period?9.As a part of maintenance activities associated with EDGs, is this extension a part of theroutine maintenance activities? Please elaborate.10.In diesel generator reliability, have you evaluated the Maintenance Preventable FunctionFailure (MPFF) under the 50.65 maintenance rule? If so, have you incorporated the MPFF in your EDG reliability? 11.How does this extension impact the station blackout (SBO) sequences? Please discussyour reliability program in general and specifically the ability and timing of the EDGs torecover from an SBO event.
| | PUBLIC LPLIV Reading RidsNrrDorlDpr RidsNrrDorlLpl4 RidsRgn4MailCenter (TPruett) |
| Palo Verde Generating Station, Units 1, 2, and 3 cc:March 2006Mr. Steve OleaArizona Corporation Commission 1200 W. Washington Street Phoenix, AZ 85007Mr. Douglas Kent PorterSenior Counsel Southern California Edison Company Law Department, Generation Resources
| | RidsAcrsAcnwMailCenter RidsNrrLALFeizollahi RidsNrrPMMFields RidsOgcRp ADAMS ACCESSION NO: ML061710465 OFFICE LPL4/PM LPL4/LA LPL4/BC NAME MFields LFeizollahi DTerao DATE 06/22/06 06/22/06 06/23/06 OFFICIAL RECORD COPY |
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| P.O. Box 800 Rosemead, CA 91770Senior Resident InspectorU.S. Nuclear Regulatory Commission
| | REQUEST FOR ADDITIONAL INFORMATION ARIZONA PUBLIC SERVICE COMPANY, ET AL. |
| | PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 DOCKET NOS. STN 50-528, STN 50-529, AND STN 50-530 By letter dated December 23, 2005, Arizona Public Service Company submitted a license amendment request for the Palo Verde Nuclear Generating Station (PVNGS), Units 1, 2, and 3. |
| | The request is to extend the allowed out-of-service time (AOT) for one inoperable emergency diesel generator (EDG) from 72 hours to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and revise TS 3.4.9, "Pressurizer," to delete the words which require that the two groups of pressurizer heaters be capable of being powered from an emergency power supply. |
| | The staff has reviewed the information provided and determined that the following additional information is required in order to complete the evaluation. |
| | : 1. Provide a qualitative or quantitative assessment of the following risk changes: |
| | - Information on risk-important components and configuration that will be affected by the proposed extension, including Diesel Fuel Oil and Pressurizer Heaters. |
| | - Please provide a brief discussion and related information regarding the risk quantification tool. |
| | - Provide a discussion of the probabilistic risk assessment (PRA) quality, with emphasis on the system(s) and train(s) affected by the amendment. The discussion may include parametric uncertainty. |
| | - Please provide relative risk impact on incremental conditional core damage probability (ICCDP) and incremental conditional large early release probability (ICLERP), using zero maintenance model versus regular model with baseline test/maintenance activities. |
| | - Are there any compensatory measures to mitigate the potential risk increases due to the amendment? If so, provide a discussion of the proposed compensatory measures and the associated benefit in both quantifiable and non-quantifiable terms. |
| | - Provide a brief discussion of the plant configuration control program and the on-line risk monitor. |
| | : 2. Your risk assessment in the submittal was based on internal events only. Discuss the impact of potential external events and risk contributors, such as fire. |
| | : 3. On page 17 of Enclosure 2 you state that your ICCDP would exceed the Regulatory Guide (RG) guideline. The intent in making the comparison of the PRA results with RG 1.177 is to demonstrate, with reasonable assurance, that Principle 4 in the Discussion section of RG 1.177 is being met. Please discuss how Principle 4 is being met. |
| | : 4. In Table 3, Enclosure 2 of your request letter, you have recalculated internal event core damage frequency based on your new reliability number. However, Table 2 of the enclosure clearly indicated that the plant risk (ICCDP) under the proposed amendment would increase by 6.44E-7 and 6.05E-7 for EDG A and EDG B, respectively. With this proposed TS change, it appears that the risk would increase by 6.44E-7/yr and 6.05E-7/yr, respectively, by annualizing the ICCDP for one year. Please explain these results. |
| | : 5. In your reliability recalculation presented in the second paragraph of page 17 of Enclosure 2, the increase of the actual unavailability was assumed as 5.5 days instead of the 10-day proposed extension. The 5.5 days of maintenance outage discussed implies that the TS AOT will be used as a part of your routine online maintenance activities. Please explain. |
| | : 6. Please discuss the impacts of the uncertainties and risk contributors for both those explicitly accounted for in the results and those that were not. |
| | : 7. According to your risk assessment, EDG A has higher risk importance than that of EDG B. Please Explain. |
| | : 8. What are the risk assessment methodologies (such as FIVE) that you have employed for fire? Have you considered providing fire watch during the proposed AOT period? |
| | : 9. As a part of maintenance activities associated with EDGs, is this extension a part of the routine maintenance activities? Please elaborate. |
| | : 10. In diesel generator reliability, have you evaluated the Maintenance Preventable Function Failure (MPFF) under the 50.65 maintenance rule? If so, have you incorporated the MPFF in your EDG reliability? |
| | : 11. How does this extension impact the station blackout (SBO) sequences? Please discuss your reliability program in general and specifically the ability and timing of the EDGs to recover from an SBO event. |
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| P. O. Box 40 Buckeye, AZ 85326Regional Administrator, Region IVU.S. Nuclear Regulatory Commission Harris Tower & Pavillion 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064ChairmanMaricopa County Board of Supervisors 301 W. Jefferson, 10th Floor Phoenix, AZ 85003Mr. Aubrey V. Godwin, DirectorArizona Radiation Regulatory Agency 4814 South 40 Street Phoenix, AZ 85040Mr. Craig K. Seaman, General ManagerRegulatory Affairs and Performance Improvement Palo Verde Nuclear Generating Station Mail Station 7636 P.O. Box 52034 Phoenix, AZ 85072-2034Mr. Matthew BenacAssistant Vice President Nuclear & Generation Services El Paso Electric Company 340 East Palm Lane, Suite 310 Phoenix, AZ 85004Mr. John TaylorPublic Service Company of New Mexico 2401 Aztec NE, MS Z110 Albuquerque, NM 87107-4224Mr. Thomas D. ChampSouthern California Edison Company 5000 Pacific Coast Hwy Bldg D1B San Clemente, CA 92672Mr. Robert HenrySalt River Project 6504 East Thomas Road Scottsdale, AZ 85251Mr. Jeffrey T. WeikertAssistant General Counsel El Paso Electric Company Mail Location 167 123 W. M illsEl Paso, TX 79901Mr. John SchumannLos Angeles Department of Water & Power Southern California Public Power Authority P.O. Box 51111, Room 1255-C Los Angeles, CA 90051-0100Mr. Brian AlmonPublic Utility Commission William B. Travis Building P. O. Box 13326 1701 North Congress Avenue Austin, TX 78701-3326Ms. Karen O'ReganEnvironmental Program Manager City of Phoenix Office of Environmental Programs 200 West Washington Street Phoenix AZ 85003}}
| | Palo Verde Generating Station, Units 1, 2, and 3 cc: |
| | Mr. Steve Olea Mr. John Taylor Arizona Corporation Commission Public Service Company of New Mexico 1200 W. Washington Street 2401 Aztec NE, MS Z110 Phoenix, AZ 85007 Albuquerque, NM 87107-4224 Mr. Douglas Kent Porter Mr. Thomas D. Champ Senior Counsel Southern California Edison Company Southern California Edison Company 5000 Pacific Coast Hwy Bldg D1B Law Department, Generation Resources San Clemente, CA 92672 P.O. Box 800 Rosemead, CA 91770 Mr. Robert Henry Salt River Project Senior Resident Inspector 6504 East Thomas Road U.S. Nuclear Regulatory Commission Scottsdale, AZ 85251 P. O. Box 40 Buckeye, AZ 85326 Mr. Jeffrey T. Weikert Assistant General Counsel Regional Administrator, Region IV El Paso Electric Company U.S. Nuclear Regulatory Commission Mail Location 167 Harris Tower & Pavillion 123 W. Mills 611 Ryan Plaza Drive, Suite 400 El Paso, TX 79901 Arlington, TX 76011-8064 Mr. John Schumann Chairman Los Angeles Department of Water & Power Maricopa County Board of Supervisors Southern California Public Power Authority 301 W. Jefferson, 10th Floor P.O. Box 51111, Room 1255-C Phoenix, AZ 85003 Los Angeles, CA 90051-0100 Mr. Aubrey V. Godwin, Director Mr. Brian Almon Arizona Radiation Regulatory Agency Public Utility Commission 4814 South 40 Street William B. Travis Building Phoenix, AZ 85040 P. O. Box 13326 1701 North Congress Avenue Mr. Craig K. Seaman, General Manager Austin, TX 78701-3326 Regulatory Affairs and Performance Improvement Ms. Karen O'Regan Palo Verde Nuclear Generating Station Environmental Program Manager Mail Station 7636 City of Phoenix P.O. Box 52034 Office of Environmental Programs Phoenix, AZ 85072-2034 200 West Washington Street Phoenix AZ 85003 Mr. Matthew Benac Assistant Vice President Nuclear & Generation Services El Paso Electric Company 340 East Palm Lane, Suite 310 Phoenix, AZ 85004 March 2006}} |
Letter Sequence RAI |
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MONTHYEARML0607600772006-03-21021 March 2006
Request for Additional Information Regarding Technical Specification Amendment Submittal
Project stage: RAI
ML0613101402006-05-0404 May 2006
Response to NRC Request for Additional Information Regarding Proposed Technical Specification Change to Emergency Diesel Generator Allowed Out of Service Time
Project stage: Response to RAI
ML0617104652006-06-23023 June 2006
Request for Additional Information Regarding Technical Specification Amendment Submittal
Project stage: RAI
ML0624102362006-08-0303 August 2006
Response to NRC Request for Additional Information Regarding Probabilistic Risk Assessment Questions Related to Proposed Technical Specification Change to Emergency Diesel Generator Allowed Out of Service Time
Project stage: Response to RAI
ML0633905302006-12-0505 December 2006
Tech Spec Pages for Amendments 164, 164, and 164 Extended Allowed Outage Time for Emergency Diesel Generators
Project stage: Other
ML0633500742006-12-0505 December 2006
Issuance of License Amendments 164, 164, and 164 Extended Allowed Outage Time for Emergency Diesel Generators
Project stage: Approval
2006-05-04
[Table View] |
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Category:Letter
MONTHYEARML24019A2012024-01-19019 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
ML23251A2332023-09-13013 September 2023
Notification of Post Approval Site Inspection for License Renewal and Request for Information Inspection (05000528/2023011)
ML23241B0182023-09-13013 September 2023
Use of Honeywell Mururoa V4F1 and MTH2 Supplied Air Suits within Respiratory Protection Program
IR 05000528/20243012023-09-0606 September 2023
Notification of NRC Initial Operator Licensing Examination 05000528/2024301; 05000529/2024301; 05000530/2024301
IR 05000528/20230102023-08-22022 August 2023
Biennial Problem Identification and Resolution Inspection Report 05000528/2023010, 05000529/2023010 and 05000530/2023010
IR 05000528/20230052023-08-21021 August 2023
Updated Inspection Plan for Palo Verde Nuclear Generating Station, Units 1, 2, and 3 (Report 05000528/2023005 and 05000529/2023005 and 05000530/2023005)
ML23222A2762023-08-10010 August 2023
Independent Spent Fuel Storage Installation, Registration of Dry Spent Fuel Transportable Storage Canister Identification Numbers AMZDFX175 and AMZDFX176 and Vertical Concrete Cask Identification Numbers AMZDNE175, and AMZDNE176
ML23199A2942023-08-0909 August 2023
Issuance of Amendment Nos. 221, 221, and 221, to Revise Technical Specifications to Adopt TSTF-107, Separate Control Rods That Are Untrippable Versus Inoperable
IR 05000528/20230022023-08-0808 August 2023
Integrated Inspection Report 05000528/2023002 and 05000529/2023002 and 05000530/2023002
ML23207A2482023-07-26026 July 2023
License Renewal Pressurizer Surge Line Inspection
ML23188A1872023-07-0707 July 2023
Fourth 10-Year Interval, Second Period Owners Activity Report Number 2R24
ML23166B0832023-07-0505 July 2023
Independence Spent Fuel Storage Installation - Issuance of Exemption
ML23181A1602023-06-30030 June 2023
2 to Updated Final Safety Analysis Report, and Revision 3 to Operations Quality Assurance Program Description
ML23180A2222023-06-29029 June 2023
Application to Revise Technical Specifications (TS) 3.5.1, Safety Injection Tanks (Sits) - Operating, TS 3.5.2, Safety Injection Tanks (Sits) - Shutdown, and TS 3.6.5, Containment Air Temperature
ML23181A0772023-06-29029 June 2023
Program Review - Simulator Testing Methodology
ML23157A1292023-06-0101 June 2023
Annual Report of Guarantee of Payment of Deferred Premium
ML23144A3722023-05-24024 May 2023
Response to Regulatory Issue Summary (RIS) 2023-01, Preparation and Scheduling of Operator Licensing Examinations
ML23143A3912023-05-23023 May 2023
Independent Spent Fuel Storage Installation - Request for Exemption from NAC-MAGNASTOR Certificate of Compliance 72-1031 - Cask Lid Batch 3 Design Requirements
ML23145A2772023-05-17017 May 2023
10-PV-2023-05 Post-Exam Comments
ML23132A3392023-05-12012 May 2023
Application to Revise Technical Specifications 3.3.11 to Adopt TSTF-266-A, Revision 3, Eliminate the Remote Shutdown System Table of Instrumentation and Controls
IR 05000528/20230012023-05-0808 May 2023
and Independent Spent Fuel Storage Installation - Integrated Inspection Report 05000528/2023001 and 05000529/2023001 and 05000530/2023001 and 07200044/2023001
ML23128A0692023-05-0808 May 2023
Notification of Biennial Problem Dentification and Resolution Inspection and Request for Information
ML23122A1822023-04-29029 April 2023
Transmittal of Technical Specification Bases Revision 76
ML23122A1912023-04-29029 April 2023
Unit 1 Core Operating Limits Report Revision 32, Unit 2 Core Operating Limits Report Revision 25, Unit 3 Core Operating Limits Report Revision 31
ML23116A2772023-04-26026 April 2023
Independent Spent Fuel Storage Installation, Annual Radioactive Effluent Release Report 2022
ML23115A4012023-04-26026 April 2023
Review of the 2022 Steam Generator Tube Inspections During Refueling Outage 23
ML23115A4982023-04-25025 April 2023
2022 Annual Environmental Operating Report
IR 05000528/20230122023-04-19019 April 2023
Notification of Commercial Grade Dedication Inspection (05000528/2023012, 05000529/2023012, and 05000530/2023012) and RFI
ML23108A0342023-04-18018 April 2023
NRC Initial Operator Licensing Examination Approval 05000528/2023301; 05000529/2023301; 05000530/2023301
ML23103A4642023-04-13013 April 2023
Annual Radiological Environmental Operating Report 2022
ML23103A4312023-04-13013 April 2023
Emergency Core Cooling System Performance Evaluation Models, 10 CFR 50.46(a)(3)(ii) Annual Report for 2022
IR 05000528/20224012023-04-13013 April 2023
Cyber Security Inspection Report 05000528/2022401 and 05000529/2022401 and 05000530/2022401
ML23102A3292023-04-12012 April 2023
Application for Authorized Use of Mururoa Single-Use, Supplied Air Suits, Models V4F1 and MTH2
ML23102A3242023-04-12012 April 2023
Supplement to Application to Revise Technical Specifications to Adopt TSTF-107-A, Separate Control Rods That Are Untrippable Versus Inoperable
ML23089A4002023-03-30030 March 2023
Consolidated Decommissioning Funding Status Report - 2022
ML23088A4012023-03-30030 March 2023
Project Manager Assignment
IR 05000528/20234022023-03-29029 March 2023
and 3 - NRC Security Inspection Report 05000528-2023402, 05000529-2023402, and 05000530-2023402, (Cover Letter Only)
ML23080A3002023-03-21021 March 2023
Present Levels of Financial Protection
2024-01-19
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML24011A1002024-01-10010 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
ML16258A0312016-09-14014 September 2016
PVNGS Units 1-3 - Notif of NRC Insp of the Implementation of Mitigation Strategies and Spent Fuel Pool Instr. Orders and Emer. Prep. Comm./Staffing/Multi-Unit Dose Assessment Plns(05000528/ 2016009;05000529/2016009;and 05000530/2016009) and
ML16111B3312016-04-20020 April 2016
Notification of NRC Component Design Bases Inspection (05000528/2016007; 05000529/2016007; 05000530/2016007) and Initial Request for Information
ML16083A2502016-03-23023 March 2016
NRR E-mail Capture - Palo Verde Nuclear Generating Station, Units 1, 2, and 3 - Official RAIs for EAL LAR
2024-01-10
[Table view] |
Text
June 23, 2006 Mr. James M. Levine Executive Vice President, Generation Mail Station 7602 Arizona Public Service Company P.O. Box 52034 Phoenix, AZ 85072-2034
SUBJECT:
PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 -
REQUEST FOR ADDITIONAL INFORMATION REGARDING TECHNICAL SPECIFICATION AMENDMENT SUBMITTAL (TAC NOS. MC9425, MC9426, AND MC9427)
Dear Mr. Levine:
By letter dated December 23, 2005, Arizona Public Service Company submitted a license amendment request for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. The request is to extend the allowed out-of-service time for one inoperable emergency diesel generator from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and revise TS 3.4.9, "Pressurizer," to delete the words which require that the two groups of pressurizer heaters be capable of being powered from an emergency power supply.
The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided and determined that additional information is required in order to complete the evaluation. The additional information being requested is enclosed. As discussed with Glenn Michael of your staff, the NRC staff is requesting a response within 30 days of the date of this letter.
If you have any questions, please contact me at 301-415-3062.
Sincerely,
/RA/
Mel B. Fields, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: STN 50-528, STN 50-529 and STN 50-530
Enclosure:
Request for Additional Information cc w/encl: See next page
June 23, 2006 Mr. James M. Levine Executive Vice President, Generation Mail Station 7602 Arizona Public Service Company P.O. Box 52034 Phoenix, AZ 85072-2034
SUBJECT:
PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 -
REQUEST FOR ADDITIONAL INFORMATION REGARDING TECHNICAL SPECIFICATION AMENDMENT SUBMITTAL (TAC NOS. MC9425, MC9426, AND MC9427)
Dear Mr. Levine:
By letter dated December 23, 2005, Arizona Public Service Company submitted a license amendment request for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. The request is to extend the allowed out-of-service time for one inoperable emergency diesel generator from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and revise TS 3.4.9, "Pressurizer," to delete the words which require that the two groups of pressurizer heaters be capable of being powered from an emergency power supply.
The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided and determined that additional information is required in order to complete the evaluation. The additional information being requested is enclosed. As discussed with Glenn Michael of your staff, the NRC staff is requesting a response within 30 days of the date of this letter.
If you have any questions, please contact me at 301-415-3062.
Sincerely,
/RA/
Mel B. Fields, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: STN 50-528, STN 50-529 and STN 50-530
Enclosure:
Request for Additional Information cc w/encl: See next page DISTRIBUTION:
PUBLIC LPLIV Reading RidsNrrDorlDpr RidsNrrDorlLpl4 RidsRgn4MailCenter (TPruett)
RidsAcrsAcnwMailCenter RidsNrrLALFeizollahi RidsNrrPMMFields RidsOgcRp ADAMS ACCESSION NO: ML061710465 OFFICE LPL4/PM LPL4/LA LPL4/BC NAME MFields LFeizollahi DTerao DATE 06/22/06 06/22/06 06/23/06 OFFICIAL RECORD COPY
REQUEST FOR ADDITIONAL INFORMATION ARIZONA PUBLIC SERVICE COMPANY, ET AL.
PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 DOCKET NOS. STN 50-528, STN 50-529, AND STN 50-530 By letter dated December 23, 2005, Arizona Public Service Company submitted a license amendment request for the Palo Verde Nuclear Generating Station (PVNGS), Units 1, 2, and 3.
The request is to extend the allowed out-of-service time (AOT) for one inoperable emergency diesel generator (EDG) from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 10 days, add a clarifying note to Condition F of Technical Specification (TS) 3.8.1, "AC [alternating current] Sources - Operating," and revise TS 3.4.9, "Pressurizer," to delete the words which require that the two groups of pressurizer heaters be capable of being powered from an emergency power supply.
The staff has reviewed the information provided and determined that the following additional information is required in order to complete the evaluation.
- 1. Provide a qualitative or quantitative assessment of the following risk changes:
- Information on risk-important components and configuration that will be affected by the proposed extension, including Diesel Fuel Oil and Pressurizer Heaters.
- Please provide a brief discussion and related information regarding the risk quantification tool.
- Provide a discussion of the probabilistic risk assessment (PRA) quality, with emphasis on the system(s) and train(s) affected by the amendment. The discussion may include parametric uncertainty.
- Please provide relative risk impact on incremental conditional core damage probability (ICCDP) and incremental conditional large early release probability (ICLERP), using zero maintenance model versus regular model with baseline test/maintenance activities.
- Are there any compensatory measures to mitigate the potential risk increases due to the amendment? If so, provide a discussion of the proposed compensatory measures and the associated benefit in both quantifiable and non-quantifiable terms.
- Provide a brief discussion of the plant configuration control program and the on-line risk monitor.
- 2. Your risk assessment in the submittal was based on internal events only. Discuss the impact of potential external events and risk contributors, such as fire.
- 3. On page 17 of Enclosure 2 you state that your ICCDP would exceed the Regulatory Guide (RG) guideline. The intent in making the comparison of the PRA results with RG 1.177 is to demonstrate, with reasonable assurance, that Principle 4 in the Discussion section of RG 1.177 is being met. Please discuss how Principle 4 is being met.
- 4. In Table 3, Enclosure 2 of your request letter, you have recalculated internal event core damage frequency based on your new reliability number. However, Table 2 of the enclosure clearly indicated that the plant risk (ICCDP) under the proposed amendment would increase by 6.44E-7 and 6.05E-7 for EDG A and EDG B, respectively. With this proposed TS change, it appears that the risk would increase by 6.44E-7/yr and 6.05E-7/yr, respectively, by annualizing the ICCDP for one year. Please explain these results.
- 5. In your reliability recalculation presented in the second paragraph of page 17 of Enclosure 2, the increase of the actual unavailability was assumed as 5.5 days instead of the 10-day proposed extension. The 5.5 days of maintenance outage discussed implies that the TS AOT will be used as a part of your routine online maintenance activities. Please explain.
- 6. Please discuss the impacts of the uncertainties and risk contributors for both those explicitly accounted for in the results and those that were not.
- 7. According to your risk assessment, EDG A has higher risk importance than that of EDG B. Please Explain.
- 8. What are the risk assessment methodologies (such as FIVE) that you have employed for fire? Have you considered providing fire watch during the proposed AOT period?
- 9. As a part of maintenance activities associated with EDGs, is this extension a part of the routine maintenance activities? Please elaborate.
- 10. In diesel generator reliability, have you evaluated the Maintenance Preventable Function Failure (MPFF) under the 50.65 maintenance rule? If so, have you incorporated the MPFF in your EDG reliability?
- 11. How does this extension impact the station blackout (SBO) sequences? Please discuss your reliability program in general and specifically the ability and timing of the EDGs to recover from an SBO event.
Palo Verde Generating Station, Units 1, 2, and 3 cc:
Mr. Steve Olea Mr. John Taylor Arizona Corporation Commission Public Service Company of New Mexico 1200 W. Washington Street 2401 Aztec NE, MS Z110 Phoenix, AZ 85007 Albuquerque, NM 87107-4224 Mr. Douglas Kent Porter Mr. Thomas D. Champ Senior Counsel Southern California Edison Company Southern California Edison Company 5000 Pacific Coast Hwy Bldg D1B Law Department, Generation Resources San Clemente, CA 92672 P.O. Box 800 Rosemead, CA 91770 Mr. Robert Henry Salt River Project Senior Resident Inspector 6504 East Thomas Road U.S. Nuclear Regulatory Commission Scottsdale, AZ 85251 P. O. Box 40 Buckeye, AZ 85326 Mr. Jeffrey T. Weikert Assistant General Counsel Regional Administrator, Region IV El Paso Electric Company U.S. Nuclear Regulatory Commission Mail Location 167 Harris Tower & Pavillion 123 W. Mills 611 Ryan Plaza Drive, Suite 400 El Paso, TX 79901 Arlington, TX 76011-8064 Mr. John Schumann Chairman Los Angeles Department of Water & Power Maricopa County Board of Supervisors Southern California Public Power Authority 301 W. Jefferson, 10th Floor P.O. Box 51111, Room 1255-C Phoenix, AZ 85003 Los Angeles, CA 90051-0100 Mr. Aubrey V. Godwin, Director Mr. Brian Almon Arizona Radiation Regulatory Agency Public Utility Commission 4814 South 40 Street William B. Travis Building Phoenix, AZ 85040 P. O. Box 13326 1701 North Congress Avenue Mr. Craig K. Seaman, General Manager Austin, TX 78701-3326 Regulatory Affairs and Performance Improvement Ms. Karen O'Regan Palo Verde Nuclear Generating Station Environmental Program Manager Mail Station 7636 City of Phoenix P.O. Box 52034 Office of Environmental Programs Phoenix, AZ 85072-2034 200 West Washington Street Phoenix AZ 85003 Mr. Matthew Benac Assistant Vice President Nuclear & Generation Services El Paso Electric Company 340 East Palm Lane, Suite 310 Phoenix, AZ 85004 March 2006
