Letter Sequence RAI |
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Results
Other: ML11255A032, ML11258A109, ML11342A205, ML12018A332, ML12139A066, ML12139A071, ML12139A074, ML12164A800, ML12256A929, ML12286A325, ML13053A374, ML13171A064, ML14071A378, ML14073A117, RS-14-319, Cancellation of Parent Company Guarantee
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MONTHYEARML11209B7092011-07-22022 July 2011 Submittal of Summary Report for Inservice Inspections (2R11) Project stage: Request ML11255A0322011-09-15015 September 2011 Plan for the Scoping and Screening Regulatory Audit Regarding the Limerick Generating Station, Units 1 and 2 License Renewal Application Review (TAC Nos. ME6555, ME6556) Project stage: Other ML11258A1092011-09-20020 September 2011 Plan for the Aging Management Program Regulatory Audit Regarding the Limerick Generating Station, Units 1 and 2 License Renewal Application Review Project stage: Other ML1134101442011-12-0707 December 2011 Response to NRC Request for Additional Information, Dated November 18, 2011 Project stage: Response to RAI ML11342A2052011-12-0909 December 2011 Scoping and Screening Methodology Audit Report Regarding the Limerick Generating Station, Units 1 and 2 Project stage: Other ML1133402312011-12-12012 December 2011 Request for Additional Information for Limerick Generating Station, Units 1 and 2 License Renewal Application-Scoping and Screening (TAC Nos. ME6555 and ME6556) Project stage: RAI ML11343A4382011-12-15015 December 2011 Requests for Additional Information for the Review of the Limerick Generating Station License Renewal Application (TAC ME6555, ME6556) Project stage: RAI ML11335A3172012-01-0505 January 2012 RAI for the Review of the Limerick Generating Station License Renewal Application (TAC Nos. ME6555, ME6556) Project stage: RAI ML11347A3602012-01-17017 January 2012 Requests for Additional Information for the Review of the Limerick Generating Station License Renewal Application (TAC Nos. ME6555, ME6556) Project stage: RAI ML11361A0832012-01-18018 January 2012 Requests for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555, ME6556) Project stage: RAI ML11361A0792012-01-24024 January 2012 Requests for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555, ME6556) Project stage: RAI ML11364A0992012-01-30030 January 2012 Requests for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555, ME6556) Project stage: RAI ML12163A7532012-01-31031 January 2012 2012/01/31 Limerick Lr - FW: Request for Additional Information for the Review of the Limerick Generation Station, Units 1 and 2 License Renewal Application (TAC Nos. ME6555 and ME6556) Project stage: Request ML12005A2512012-01-31031 January 2012 Request for Additional Information for the Review of the Limerick Generating Station Units 1 and 2 License Renewal Application (TAC Nos. ME6555, ME6556) TLAA 43 and 468 RAIs Project stage: RAI ML12018A0332012-02-14014 February 2012 Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555, ME6556) Rapb AMR2 RAIs Project stage: RAI ML12017A1592012-02-16016 February 2012 Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555 and ME6556) Project stage: RAI ML12024A2312012-02-16016 February 2012 Requests for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555 and ME6556) OE and Other RAIs Project stage: RAI ML1204703722012-02-16016 February 2012 Response to NRC Request for Additional Information, Dated January 17, 2012 Project stage: Response to RAI ML12019A1562012-02-17017 February 2012 Requests for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC ME6555 and ME6556) Project stage: RAI ML12018A0352012-02-23023 February 2012 Requests for Addtional Information for the Review of the Limerick Generating Station, Units 1 & 2, License Renewal Application (TAC ME6555 and ME6556) Project stage: Approval ML12059A3452012-02-28028 February 2012 Response to NRC Request for Additional Information, Dated January 30, 2012, Related to License Renewal Application Project stage: Response to RAI ML12018A3322012-02-28028 February 2012 Letter Aging Management Programs Audit Report Regarding the Limerick Generating Station, Units 1 and 2 (TAC NO.ME6555 & ME6556) Project stage: Other ML12065A2062012-03-0505 March 2012 Response to NRC Requests for Additional Information, Dated February 16, 2012, and February 17, 2012, Related to Renewal Application Project stage: Response to RAI ML12046A8992012-03-0909 March 2012 Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555 and ME6556) Limerick App J RAIs Project stage: RAI ML12009A1352012-03-0909 March 2012 Summary of the Telephone Conference Call Held on December 14, 2011, Between the U.S. Nuclear Regulatory Commission and Exelon on Generation Company, LLC, Concerning Requests for Additional Information Pertaining to the Limerick 12-14-11 Tel Project stage: RAI ML1207303612012-03-13013 March 2012 Response to NRC Requests for Additional Information, Dated February 14 and February 16, 2012, Related to the Limerick Generating Station License Renewal Application Project stage: Response to RAI ML12080A1182012-03-20020 March 2012 Response to NRC Requests for Additional Information, Dated February 23 and March 9, 2012, Related to License Renewal Application Project stage: Response to RAI ML12074A0372012-03-22022 March 2012 Letter Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555, ME6556) Buried Piping and FP Follow Up Project stage: RAI ML12090A4892012-03-30030 March 2012 Response to NRC Request for Additional Information, Dated March 22, 2012 and Information Addressing Minor Errors or Omissions Related to License Renewal Application Project stage: Response to RAI ML12080A1902012-04-0505 April 2012 Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555 and ME6556) BWR SCC Smp and Ctws Follow Up Project stage: RAI ML12066A0262012-04-0909 April 2012 February 9, 2012, Summary of Telephone Conference Call Held Between the U.S. Nuclear Regulatory Commission and Exelon Generation Company, Llc. Concerning Request for Additional Information Pertaining to the Limerick Project stage: RAI ML12089A3772012-04-13013 April 2012 Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6556 and ME6555) Fluence and FP Followup RAIs Project stage: RAI ML12104A1182012-04-13013 April 2012 Response to NRC Requests for Additional Information, Dated April 5, 2012, Related to License Renewal Application Project stage: Response to RAI ML12082A1552012-04-16016 April 2012 Requests for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555 and ME6556) Project stage: RAI ML12095A3982012-04-17017 April 2012 Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos ME6555 and ME6556)TLAA Follow-up RAIs Project stage: RAI ML12025A0512012-04-20020 April 2012 Summary of Telephone Conference Call Held on January 18, 2012, Between the U.S. Nuclear Regulatory Commission and Exelon Generation Company, LLC, Concerning Request for Additional Information Pertaining to the Limerick Generation 1-18-12 Te Project stage: RAI ML12059A0802012-04-20020 April 2012 February 17, 2012, Summary of Telephone Conference Call Held Between U.S. Nuclear Regulatory Commission and Exelon Generation Company, LLC, Concerning Request for Additional Information Pertaining to the Limerick 2-17-12 Telecon Summary Project stage: RAI ML12018A0232012-04-26026 April 2012 1/12/2012 Telecon Summary Between the U.S. Nuclear Regulatory Commission and Exelon Generation Company, LLC, Concerning Requests for Additional Information Pertaining to the Limerick Generating Station, License Renewal Application Project stage: RAI ML12111A0342012-04-30030 April 2012 Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555 and ME6556)SCC RAIs Project stage: RAI ML12125A3342012-05-0404 May 2012 Responses to NRC Requests for Additional Information, Dated April 17, 2012, Related to the License Renewal Application Project stage: Response to RAI ML12128A4382012-05-0707 May 2012 Responses to NRC Requests for Additional Information, Dated April 30, 2012, Related to the License Renewal Application Project stage: Response to RAI ML12152A3092012-05-31031 May 2012 Responses to NRC Requests for Additional Information, Dated May 18, 2012, Related to the License Renewal Application Project stage: Response to RAI ML12139A0662012-06-0707 June 2012 4-30-12 Telecon Summary Project stage: Other ML12157A2122012-06-12012 June 2012 Requests for Additional Information for the Review of the Limerick Generating Stations, Units 1 and 2, License Renewal Application (TAC Nos. ME6555 and ME6556) Ope Follow-up RAI Project stage: RAI ML12152A3052012-06-12012 June 2012 Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555, ME6556) Project stage: RAI ML12171A4872012-06-19019 June 2012 Responses to NRC Requests for Additional Information, Dated June 12, 2012, Related to the Limerick Generating Station License Renewal Application Project stage: Response to RAI ML12174A3292012-06-22022 June 2012 Response to NRC Request for Additional Information, Dated June 21, 2012, Related to License Renewal Application Project stage: Response to RAI ML12139A0612012-06-25025 June 2012 Summary of Telephone Conference Call Held on May 16, 2012, Between the U.S. Nuclear Regulatory Commission and Exelon Generation Company, LLC, Concerning Requests for Additional Information Pertaining to the Limerick Generating Station, Lice Project stage: RAI ML12193A1282012-07-10010 July 2012 2012/07/10 Limerick Lr - FW: Limerick: Request for Additional Information for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME6555 and ME6556) Project stage: Request ML12181A4412012-07-10010 July 2012 RAI for the Review of the Limerick Generating Station, Units 1 and 2, License Renewal Application (TAC No. ME6555 and ME6556) Project stage: RAI 2012-03-22
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Category:Letter
MONTHYEARIR 05000352/20243012024-02-0202 February 2024 Initial Operator Licensing Examination Report 05000352/2024301 and 05000353/2024301 IR 05000352/20230042024-01-31031 January 2024 Integrated Inspection Report 05000352/2023004 and 05000353/2023004 IR 05000352/20240112024-01-31031 January 2024 Information Request to Support Post-Approval Site Inspection for License Renewal; Inspection Report 05000352/2024011 ML24026A2962024-01-26026 January 2024 Supplement to License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection System (PPS)- Syrs, . ML24004A0342024-01-17017 January 2024 Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0026 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)) IR 05000352/20230102024-01-11011 January 2024 Age-Related Degradation Report 05000352/2023010 and 05000353/2023010 IR 05000352/20234012023-12-21021 December 2023 Cybersecurity Inspection Report 05000352/2023401 and 05000353/2023401 ML23321A2362023-12-14014 December 2023 Issuance of Amendment Nos. 262 and 224 Adoption of TSTF-477, Revision 3 and Associated Technical Specification Changes ML23278A1292023-12-14014 December 2023 Units 1 & 2; Limerick, Units 1 & 2; Nine Mile Point, Units 1 & 2; and Peach Bottom, Units 2 & 3 -Revision to Approved Alternatives to Use Boiling Water Reactor Vessel and Internals Project Guidelines ML23333A2182023-11-29029 November 2023 Operator Licensing Examination Approval ML23325A2062023-11-21021 November 2023 Supplement to License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection System ML23313A0432023-11-13013 November 2023 Summary of Regulatory Audit in Support of Amendment Request for Control Room Air Conditioning Technical Specifications ML23317A1192023-11-10010 November 2023 Constellation Energy Generation, LLC - 2023 Annual Report - Guarantees of Payment of Deferred Premiums IR 05000352/20230032023-10-27027 October 2023 Integrated Inspection Report 05000352/2023003 and 05000353/2023003 and Independent Spent Fuel Storage Installation Inspection 07200065/2023001 ML23297A1722023-10-24024 October 2023 Request for Information for a Biennial Problem Identification and Resolution Inspection; Inspection Report 05000352/2024010 and 05000353/2024010 IR 05000352/20235012023-10-17017 October 2023 Emergency Preparedness Biennial Exercise Inspection Report 05000352/2023501 and 05000353/2023501 RS-23-097, Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans2023-10-12012 October 2023 Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans ML23279A0612023-10-0505 October 2023 Paragon Energy Solutions LLC, Part 21 Final Report Re Potential Defect with Eaton Jd and Hjd Series Molded Case Circuit Breakers (Mccbs) ML23276A5162023-10-0303 October 2023 Federal Emergency Management Agency Level 1 Finding from 2023 Evaluated Emergency Preparedness Exercise ML23275A1082023-09-29029 September 2023 FEMA Level 1 Findings Limerick NPP- Boyertown/Colebrookdale ML23241A9452023-09-27027 September 2023 Generation Station, Units 1 and 2 Regulatory Audit Plan Supporting Review of the Equipment Qualification Portion of Limerick Digital Instrumentation and Controls License Amendment Request ML23269A0522023-09-26026 September 2023 Request for Information and Notification of Conduct of IP 71111.21.N.04, Age-Related Degradation, Reference Inspection Report 05000352/2023010 and 05000353/2023010 ML23255A0952023-09-12012 September 2023 Resubmittal of License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection System (PPS) to Address ML23254A0242023-09-0606 September 2023 Paragon Energy Solutions LLC, Potential Defect with Eaton Jd and Hjd Series Molded Case Circuit Breakers (Mccbs) ML23249A1002023-09-0606 September 2023 Requalification Program Inspection IR 05000352/20230052023-08-31031 August 2023 Updated Inspection Plan for Limerick Generating Station, Units 1 and 2 (Report 05000352/2023005 and 05000353/2023005) ML23248A2082023-08-31031 August 2023 UFSAR Cover Page ML23242A2172023-08-30030 August 2023 Response to Request for Additional Information for Application to Adopt TSTF-477, Revision 3, Add Action for Two Inoperable Control Room AC Subsystems and Associated Technical Specification Changes NMP2L2851, Relief Request Associated with Successive Inspections for Generic Letter 88-01 / BWRVIP-75-A Augmented Examinations2023-08-25025 August 2023 Relief Request Associated with Successive Inspections for Generic Letter 88-01 / BWRVIP-75-A Augmented Examinations ML23228A0942023-08-16016 August 2023 Response to Request for Additional Information for Supplemental License Amendment Request to Revise Technical Specifications and Exemption Request from Requirements of 10CFR50.62 ATWS Rule to Support the . IR 05000352/20230022023-08-14014 August 2023 Integrated Inspection Report 05000352/2023002 and 05000353/2023002 ML23220A0182023-08-0808 August 2023 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000352/2023401 and 05000353/2023401 RS-23-087, Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor2023-08-0404 August 2023 Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor ML23212B2362023-07-31031 July 2023 Supplement to License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection System - WEC Documents ML23212B1052023-07-31031 July 2023 Supplement to License Amendment Request to Revise Technical Specifications and Exemption Request from Requirements of 10CFR50.62 ATWS Rule to Support the Digital Modernization Project Installation - Revise ML23202A2192023-07-21021 July 2023 Response to Request for Additional Information for Supplemental License Amendment Request to Revise Technical Specifications and Exemption Request from Requirements of 10CFR50.62 ATWS Rule to Support the . ML23193B0122023-07-20020 July 2023 Audit Plan in Support of Review of License Amendment Request and Exemption Request for Digital Instrumentation and Controls Installation Support (Epids L-2023-LLA-0025 and L-2023-LLE-0005) ML23187A0962023-07-19019 July 2023 Generation Station, Unit Nos. 1 and 2 - Revised Estimated Review Completion Date Concerning License Amendment Request to Replace Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection System ML23208A1522023-07-0606 July 2023 PEMA Letter Dated 7-6-23 Re Limerick Exercise 9-26-23 ML23177A2242023-06-26026 June 2023 Supplement to License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection . ML23145A1972023-06-23023 June 2023 Correction to the Renewed Facility Operating License Pages in Amendment Nos. 255, 256, 257, 258, 259, and 260 2024-02-02
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML23276B4642023-10-0303 October 2023 NRR E-mail Capture - NRC Request for Additional Information Limerick TSTF-477 LAR ML23269A0522023-09-26026 September 2023 Request for Information and Notification of Conduct of IP 71111.21.N.04, Age-Related Degradation, Reference Inspection Report 05000352/2023010 and 05000353/2023010 ML23208A1942023-07-27027 July 2023 NRR E-mail Capture - Limerick Generating Station - Audit Plan for TSTF-477 LAR Review (L-2022-LLA-0174) ML23202A0682023-07-21021 July 2023 NRR E-mail Capture - NRC Request for Additional Information Re. TSTF-477 LAR ML23201A1262023-07-18018 July 2023 Additional RAIs for Limerick Generation Station, Units 1 and 2 - LAR and Exemption Request for Digital I&C Installation Support ML23173A0632023-06-20020 June 2023 RAIs for Limerick Generation Station, Units 1 and 2 - LAR and Exemption Request for Digital I&C Installation Support ML22320A1132022-11-21021 November 2022 Generation Station, Units 1 and 2 - Supplemental Information Needed for Acceptance of Digital Instrumentation and Controls License Amendment Requests ML22172A0752022-06-17017 June 2022 Response: Review and Feedback on Draft Limerick Digital License Amendment Request (L-2020-LRM-0041) ML22136A0032022-05-13013 May 2022 NRR E-mail Capture - NRC Request for Additional Information - Limerick License Amendment Request (L-2021-LLA-0042) ML22124A2862022-05-0404 May 2022 Information Needed to Provide Substantive Feedback on Human Factors Engineering Supporting the Planned Limerick Digital I&C License Amendment Request ML22103A2542022-04-19019 April 2022 Draft Request for Additional Information ML22089A1172022-03-30030 March 2022 Additional Comments and Questions on Constellation'S March 31st Presentation ML22045A4822022-02-14014 February 2022 Notification of Conduct of a Fire Protection Team Inspection ML22041B5362022-02-10010 February 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Request for Additional Information Regarding Fleet License Amendment Request to Adopt TSTF-541 ML22020A0642022-01-13013 January 2022 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative for Repair of Water Level Instrumentation Partial Penetration Nozzles ML21256A1902021-09-10010 September 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21144A2132021-05-24024 May 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21117A0342021-05-0505 May 2021 Request for Additional Information Regarding Proposed Alternative to Use ASME Code Case N-893 ML21062A0652021-03-0101 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21049A2572021-02-18018 February 2021 Request for Additional Information Byron/Dresden Proposed Changes to Site Emergency Plans to Support Post-Shutdown and Permanently Defueled Conditions (EPID-2020-LLA-0240 & EPID-2020-LLA-0237) ML21048A3402021-02-11011 February 2021 Request for Information for Relief Request I4R-24 Associated with Residual Heat Removal Heat Exchanger Category C-A and C-B Examinations ML21015A1852021-01-15015 January 2021 Temporary Instruction 2515/194 Inspection Documentation Request ML20239A7982020-08-25025 August 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet License Amendment Request to Adopt TSTF-568, Revision 2 ML20156A2992020-06-0404 June 2020 RAI for RR to Use Inservice Testing Program Safety Relief Valve Testing ML20153A7042020-06-0101 June 2020 NRR E-mail Capture - Preliminary RAI for Fleet Request to Use Alternative OMN-26 ML20149K7012020-05-28028 May 2020 Request for Additional Information for License Amendment Request to Use Inservice Testing Program Safety Relief Valve Testing ML20098C4342020-04-0606 April 2020 Draft Request for Additional Information - Limerick Generating Station, Unit 1 - Emergency LAR to Increase Allowable MSIV Leakage ML19344A0332019-12-10010 December 2019 Request for Additional Information License Amendment Request to Adopt TSTF-505, Revision 2 Risk Informed Completion Times Exelon Generation Company Limerick Generating Station, Units 1 and 2 Docket Nos. 50-352 and 50-353 ML19344A0242019-12-0909 December 2019 Request for Additional Information (RAI) - Limerick Units 1 and 2: TSTF-505, Use of Risk Informed Completion Times (Ricts) for Actions to Be Taken When Limiting Conditions for Operation (Lcos) Are Not Met ML19275H1362019-10-0202 October 2019 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Request to Use ASME Code Case N-879 ML19179A0612019-07-19019 July 2019 Three Mile Point 1 - Supplemental Information Needed to Proposed Alternative to Use ASME Code Case N-879 ML19192A0312019-07-10010 July 2019 NRR E-mail Capture - LIMERICK-REQUEST for Additional Information: Risk Informed Completion Times TSTF-505, Revison 2, Provide RISK-INFORMED Completion Times - RITSTF Initiative 4B ML19168A0882019-06-17017 June 2019 Letter to R. W. Libra Alternative Request Pertaining to Dry Shielded Canisters Equipped with Boral Neutron Absorber Plates - Supplemental Information Needed (W/Enclosursi) ML18276A0202018-10-0202 October 2018 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Amendment Request to Revise Emergency Plan for Limerick and Peach Bottom ML18081B0682018-03-26026 March 2018 Second Round RAI for Limerick, 10 CFR 50.69 ML18067A1482018-03-0808 March 2018 Enclosurequest for Additional Information (Letter to P. R. Simpson Request for Additional Information Regarding Exelon Generating Company, Llc'S Decommissioning Funding Plan Update for Independent Spent Fuel Storage Installation) ML17354A0182017-12-19019 December 2017 E-mail Request for Information (Rai): Relief Request I3R-23 Regarding Limited Examination Coverage ML18040A9212017-11-0707 November 2017 Attachment - Limerick Generating Station, Units 1 and 2, Request for Additional Information Application to Revise TSs to Adopt TSTF-542, Revision 2 ML17207A0772017-07-31031 July 2017 Supplemental Information Needed for Acceptance of Requested Licensing Action Adoption of Title 10 of the Code of Federal Regulations Section 50.69 ML17137A1652017-05-16016 May 2017 Request for Additional Information for Relief Request Associated with Reactor Pressure Vessel Nozzle Repairs ML17062A4912017-03-0303 March 2017 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Fleet Alternative to RPV Threads in Flange Examination (CAC Nos. MF8712-MF8729) ML17018A1932016-12-0909 December 2016 NRR E-mail Capture - (External_Sender) Limerick Flood MSA Question ML16221A6712016-08-0808 August 2016 Draft Request for Additional Information ML16221A6122016-08-0808 August 2016 Draft Request for Additional Information ML16174A2982016-06-22022 June 2016 Draft Request for Additional Information ML16166A0862016-06-14014 June 2016 Draft Request for Additional Information ML16085A0252016-03-24024 March 2016 Draft Request for Additional Information ML15202A3782015-07-21021 July 2015 Draft Request for Additional Information ML14324A8102014-11-18018 November 2014 Emails from ACE and NRC Response Re Limerick Higher Radiation Readings on Nov 18, 2014 ML14210A5762014-07-29029 July 2014 Draft Request for Additional Information (Tac Nos. MF3198 and MF3199) 2023-09-26
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 19, 2012 Mr. Michael P. Gallagher Vice President, License Renewal Projects Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE LIMERICK GENERATING STATION, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NOS. ME6555 AND ME6556)
Dear Mr. Gallagher:
By letter dated June 22, 2011, Exelon Generation Company, LLC (applicant) submitted an application, pursuant to Title 10 of the Code of Federal Regulations Part 54, to renew the operating licenses for Limerick Generating Station, Units 1 and 2, for review by the U.S. Nuclear Regulatory Commission (NRC). On July 31,2012, the staff issued the Safety Evaluation Report with Open Items related to this application, which includes Open Item 3.0.3.2.13-1 regarding the applicant's proposed aging management of the suppression pool liner and downcomers under the scope of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI, Subsection IWE. In a letter dated September 12,2012, the applicant responded to the open item.
The staff is reviewing the information contained in the letter of September 12, 2012, and has identified that further information is needed to complete its review. The specific questions are in the enclosed request for additional information (RAI).
The RAI was discussed with Christopher Wilson, and a mutually agreeable date for the response is within 15 days from the date of this letter. If you have any questions, please contact me by telephone at (301) 415-1457 or bye-mail at Patrick.Milano@nrc.gov.
Sincerely,
~~Q).~
Patrick D. Milano, Sr. Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353
Enclosure:
Request for Additional Information cc w/encl: Listserv
LIMERICK GENERATING STATION, UNITS 1 AND 2 LICENSE RENEWAL APPLICATION REQUEST FOR ADDITIONAL INFORMATION License Renewal Application (LRA), Section B.2.1.30, "ASME Section XI, Subsection IWE" Request for Additional Information (RAI) 8.2.1.30-2.2
Background
In its response to RAI B.2.1.30-2.1, dated April 27, 2012, Exelon Generation Company, LLC (the applicant) stated that:
"[T]he acceptance criterion for the downcomers of 0.0625 inches for surface defects is applied to local degradation of less than or equal to 5.5 inches in any direction. An area of localized corrosion of 0.040 inches (or more) metal loss will be recoated. The criterion for acceptable general corrosion is less than or equal to 0.044 inches metal loss. An area greater than 5.5 inches in any direction with a depth of 0.030 inches (or more) metal loss will be recoated.
The applicant, in a letter dated September 12, 2012, stated that downcomer recoating acceptance criteria, as described in its letter dated April 27, 2012, will be incorporated into the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code)
Section XI, Subsection IWE aging management program (AMP). However, the applicant revised ASME Section XI, Subsection IWE AMP B.2.1.30, LRA Appendix A, Updated Final Safety Analysis Report (UFSAR) Supplement (Section A.2.1.30 and Commitment 30) to state that ASME Section XI, Subsection IWE AMP will be enhanced prior to period of extended operation (PEO) "to include the criteria used to determine when the downcomer areas affected by corrosion will be recoated."
The applicant has not incorporated the downcomer recoating criteria, which was described in its letter dated April 27,2012, into ASME Section XI, Subsection IWE AMP submitted to the NRC on September 12, 2012. In addition, LRA Appendix A, UFSAR Supplement (Section A.2.1.30 and Commitment 30) does not describe the downcomer recoating criteria. This is not consistent with Title 10 of the Code of Federal Regulations (10 CFR) 54.21 (d), which requires that the FSAR supplement for the facility must contain a summary description of the programs and activities for managing the effects of aging for the PEO.
In its letter dated September 12, 2012, the applicant stated that the Coating Maintenance Plan, which addresses recoating the areas of general and local corrosion of the liner plate, began in 2012 to allow the prioritized actions to be implemented prior to reaching PEO. However, it is not clear to the staff why the enhancement for the downcomer inspection and recoating criteria will not be implemented (as a part of the Coating Maintenance Plan) until the PEO starts for Unit 1 in 2024 and for Unit 2 in 2029.
ENCLOSURE
-2 Request Revise ASME Section XI, Subsection IWE AMP B.2.1.30, LRA Appendix A, UFSAR Supplement (Section A.2.1.30 and Commitment 30) to incorporate the downcomer recoating criteria. In addition, explain why prioritized actions to implement the downcomer recoating criteria are not planned prior to the PEO.
RAI 8.2.1.30-6
Background
In its letter dated September 12, 2012, the applicant stated that ultrasonic (UT) thickness measurements were performed on four liner plates in areas affected by general corrosion to determine the remaining wall thickness (two readings per plate). The thickness of these four plates was also visually assessed and compared to the UT measurements. It was determined from this comparison that the visual assessment of general corrosion metal loss for these four plates was conservative and correlated well with the UT measurements. The applicant further stated that to confirm visual assessments of general corrosion, a UT measurement will be performed, when IWE examinations are conducted, on any area of the submerged suppression pool liner affected by corrosion and significant metal loss.
The staff is concerned that a UT examination only on an area of suppression pool liner affected by general corrosion during each IWE inspection period (four years) may not be sufficient to conclude that visual assessment of general corrosion metal loss correlates well with the UT measurement.
Request Provide the justification for not performing UT examinations on a number of plates at more than one location to determine the correlation between visual assessments of general corrosion metal loss and the UT measurements.
RAI 8.2.1.30-7
Background
In its letter dated September 12, 2012, the applicant stated that the Limerick Generating Station acceptance criteria and examination methodology are consistent with ASME Section XI, Subsection IWE (specifically with the Subsections IWE -1241 and IWE-1242) and Table IWE 2500-1 requirement that 100 percent of areas having substantial corrosion require augmented inspection. Substantial liner corrosion is defined by the applicant as general corrosion that exhibits greater than 25 mils of average metal loss, or local areas of general corrosion with greater than 50 mils of metal loss. The applicant further stated that VT-1 detailed visual examinations are performed as required by ASME Section XI, Subsection IWE, Table IWE-2500-1 and 10 CFR 50.55a requirements.
-3 The staff reviewed the applicant's revised ASME Section XI, Subsection IWE AMP and UFSAR Supplement (Section A.2.1.30 and Commitment 30) provided in the letter dated September 12, 2012. The staff did not find any reference to the applicant's (owner's) defined criteria for augmented inspection as general corrosion greater than 25 mils average metal loss or local areas of general corrosion greater than 50 mil loss in the LRA AMP 8.2.1.30 and the UFSAR Supplement (Section A.2.1.30 and Commitment 30). Section CFR 54.21 (d) of 10 CFR requires that the FSAR Supplement for a facility must contain a summary description of the programs and activities for managing the effects of aging for the PEG.
Request Revise LRA AMP 8.2.1.30 and the UFSAR Supplement (Section A.2.1.30 and Commitment 30) to include owner's defined criteria for augmented inspection.
ML12290A853 *via email OFFICE PM:RPB1:DLR . SB:DLR BC:RPB1 :DLR PM: RPB1 :DLR NAME PMilano IKing MMarshali DMorey PMilano DATE 10/19/2012 10/19/2012 10/19/2012 10/19/2012 10/19/2012
Letter to M. Gallagher from P Milano dated October 19, 2012
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE LIMERICK GENERATING STATION, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION (TAC NOS. ME6555 AND ME6556)
DISTRIBUTION:
E-MAIL:
PUBLIC RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRerb Resource RidsNrrDlrRarb Resource RidsNrrDlrRasb Resource RidsNrrDlrRapb Resource RidsNrrDlrRsrg Resource RidsNrrPN ILimerick Resource RidsOgcMailCenter Resource DMorey PMilano LPerkins ASheik MSmith,OGC ABurritt, RI MModes, RI GDiPaolo, RI NSielier, RI