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| | document type = Letter | | | document type = Letter |
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| | | project = TAC:ME6555, TAC:ME6556 |
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| | =Text= |
| | {{#Wiki_filter:10CFR5010CFR5110CFR54February21,2013U.S.NuclearRegulatoryCommissionAttention:DocumentControlDeskWashington,DC20555-0001LimerickGeneratingStation,Units1and2FacilityOperatingLicenseNos.NPF-39andNPF-85NRCDocketNos.50-352and50-353Subject:ExelonGenerationCompany,LLCReviewoftheSafetyEvaluationReportrelatedtotheLimerickGeneratingStationLicenseRenewalApplicationReference:1.ExelonGenerationCompany,LLCletterfromMichaelP.GallaghertoNRCDocumentControlDesk,"ApplicationforRenewedOperatingLicenses",datedJune22,20112.LetterfromJohnW.Lubinski(NRC)toMichaelP.Gallagher(Exelon),"SafetyEvaluationReportRelatedtotheLicenseRenewalofLimerickGeneratingStation,Units1and2(TACNos.ME6555,ME6556)",datedJanuary10,2013IntheReference1letter,ExelonGenerationCompany,LLC(Exelon)submittedtheLicenseRenewalApplication(LRA)fortheLimerickGeneratingStation,Units1and2(LGS).IntheReference2letter,theU.S.NuclearRegulatoryCommissionissuedtheSafetyEvaluationReport(SER)relatedtotheLGSLicenseRenewalApplication.ExelonhascompleteditsreviewoftheSERandprovidescommentscontainedwithintheEnclosure.Therearenootherneworrevisedregulatorycommitmentscontainedinthisletter.Ifyouhaveanyquestions,pleasecontactMr.AIFulvio,Manager,ExelonLicenseRenewal,at610-765-5936. |
| | U.S.NuclearRegulatoryCommissionFebruary21,2013Page2Respectfully,VicePresident-LicenseRenewalProjectsExelonGenerationCompany,LLCEnclosure:CommentsregardingtheSafetyEvaluationReportrelatedtotheLimerickGeneratingStationLicenseRenewalApplication.cc:RegionalAdministrator-NRCRegionINRCProjectManager(SafetyReview),NRR-DLRNRCProjectManager(EnvironmentalReview),NRR-DLRNRCProjectManager,NRR-DORLLimerickGeneratingStationNRCSeniorResidentInspector,LimerickGeneratingStationR.R.Janati,CommonwealthofPennsylvania |
| | |
| | ==Enclosure== |
| | Page 1 of 3 Enclosure Comments regarding the Safety Evaluation Report related to the Limerick Generating Station License Renewal Application. The table on the following pages contains comments and suggestions for NRC staff consideration, based upon Exelon's review of the Limerick Generating Station, Units 1 and 2 Safety Evaluation (SER). An item number is provided in column 1, the SER Section number is given in column 2, the SER page number is listed in column 3 and the comment is provided in column 4. |
| | |
| | ==Enclosure== |
| | Page 2 of 3 Comments regarding the Safety Evaluation Report related to the Limerick Generating Station License Renewal Application. Where suggested changes to the SER are provided, they are highlighted with bolded italics for inserted text and strikethroughs for deleted text. # Section # Page # Comment 1. 3.0.3.1.18 3-58 Delete the following in the third paragraph: "For penetrations 238 and 239 associated with the RHR system relief valves, the staff noted that Table 6.2-25, Note 23 of the UFSAR, indicates that through modifications performed at the first refueling the relief valve discharge line isolation valves are also subject either to local testing or removal and bench testing for subsequent LLRTs. Penetrations 238 and 239 are comprised by a "Double O-Ring with Seal Assembly," where typically, the seals per Table 6.2-25, Note 23 of the UFSAR, will be leak rate tested by pressurizing between the O-Rings." Comment: |
| | As discussed in Exelon's response to RAI B.2.1.33-1, penetrations 238 and 239 include a suppression pool water seal, at least one isolation valve outside containment, and a closed system outside containment. Penetrations 238 and 239 are correctly discussed in the second paragraph. 2. 3.0.3.2.13 3-129 SER states that: "According to ASME Code Section XI, Subsection IWE, each "inspection period" and "inspection interval" are of 40 months and 120 months duration, respectively." Comment: Stating that each inspection period is 40 months in duration according to IWE Code is incorrect. ASME Code Section XI, Subsection IWE-2411 describes an Inspection Program B interval as 10 years. IWE-2412 and Table IWE-2412-1 indicate there are three periods in an Inspection Program B interval. Table IWE-2412-1 also indicates that periods of 4 years in duration are acceptable. LGS outages are conducted every 2 years and therefore some periods could be 4 years in duration. 3. 3.0.3.2.13 3-133 Delete the last part of the SER statement as shown in strikethrough below: "The staff reviewed the revised Commitment No. 30, as noted above, and found it acceptable because: (1) The applicant plans to recoat all local areas (less than 2.5 inches in diameter) of corrosion (pitting corrosion) that are greater than 50 mils plate thickness loss in the outage identified. in 2012 for Unit 1, and 2013 for Unit 2." Comment: |
| | As stated in Commitment No. 30, the coating maintenance plan will be initiated in the 2012 refueling outage for unit 1 and the 2013 refueling outage for unit 2. Our commitment was revised in our September 12, 2012 letter to the staff to require recoating local areas (less than 2.5 inches in diameter) of general corrosion that are greater than 50 mils plate thickness loss in the outage they are identified. The commitment revision occurred after the Unit 1 outage in 2012 and therefore not all local areas of general corrosion greater than 50 mils plate thickness loss were recoated in that outage. |
| | |
| | ==Enclosure== |
| | Page 3 of 3 Comments regarding the Safety Evaluation Report related to the Limerick Generating Station License Renewal Application. Where suggested changes to the SER are provided, they are highlighted with bolded italics for inserted text and strikethroughs for deleted text. # Section # Page # Comment 4. 3.7 3-412 Delete the part of the SER statement as shown in strikethrough below: "The staff reviewed the information in LRA Section 3, "Aging Management Review Results," and LRA Appendix B, "Aging Management Programs and Activities." On the basis of its review of the AMR results and AMPs, the staff concludes, with the exception of Open Items 3.0.3.2.13-1 and 3.0.5-1, that the applicant has demonstrated that the aging effects will be adequately managed so that the intended function(s) will be maintained consistent with the CLB for the period of extended operation, as required by 10 CFR 54.21 (a)(3). The staff also reviewed the applicable UFSAR supplement program summaries and concludes that the supplement adequately describes the AMPs credited for managing aging, as required by 10 CFR 54.21 (d). |
| | With regard to these matters, the staff concludes, with the exception of Open Item 3.0.3.2.13-1 that there is reasonable assurance that the applicant will continue to conduct the activities authorized by the renewed licenses in accordance with the CLB, and any changes made to the CLB, in order to comply with 10 CFR 54.21 (a)(3), are in accordance with the Atomic Energy Act of 1954, as amended, and NRC regulations.". |
| | Comment: Open items 3.0.3.2.13-1 and 3.0.5-1 are closed. 5. Appendix A, Item #38 A-24 Comment: Commitment #38 - Entry for the column entitled "Enhancements or Implementation Schedule." |
| | The program for commitment #38 does not have enhancements. |
| | The entry for this column should be revised to align with the LRA Appendix A, Table A.5. Delete: Program to be enhanced before the period of extended operation. Suggested reword: Program and initial inspections to be implemented before the period of extended operation. |
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Letter Sequence Other |
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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
MONTHYEARML24243A0482024-09-19019 September 2024 Generation Station, Unit Nos. 1 and 2 - Schedule Update for License Amendment Request to Replace Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection System ML24215A4042024-09-18018 September 2024 Request for Withholding Information from Public Disclosure IR 05000352/20244202024-09-16016 September 2024 – Security Baseline Inspection Report 05000352/2024420 and 05000353/2024420 RS-24-090, Response to Request for Additional Information - Relief Request Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds2024-09-12012 September 2024 Response to Request for Additional Information - Relief Request Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds IR 05000352/20250102024-09-10010 September 2024 Information Request for Quadrennial Baseline Comprehensive Engineering Team Inspection; Notification to Perform Inspection 05000352/2025010 and 05000353/2025010 ML24255A8642024-09-0606 September 2024 Rscc Wire & Cable LLC Dba Marmon Industrial Energy & Infrastructure - Part 21 Retraction of Final Notification IR 05000352/20230022024-09-0404 September 2024 Reissued Integrated Inspection Report 05000352/2023002 and 05000353/2023002 IR 05000352/20240052024-08-29029 August 2024 Updated Inspection Plan for Limerick Generating Station, Units 1 and 2 (Report 05000352/2024005 and 05000353/2024005) ML24241A1952024-08-28028 August 2024 License Amendment Request for Modification to Technical Specification 3.6.1.2 and Main Steam Isolation Valve Leakage Rate Requirements ML24239A3972024-08-23023 August 2024 Rssc Wire & Cable LLC Dba Marmon - Part 21 Final Notification - 57243-EN 57243 ML24163A3902024-08-14014 August 2024 Request for Withholding Information from Public Disclosure IR 05000352/20240022024-08-12012 August 2024 Integrated Inspection Report 05000352/2024002 and 05000353/2024002 ML24220A2392024-08-12012 August 2024 Correction to Technical Specification Page 3/4 3-11 in Amendment No. 225 ML24222A6772024-08-0909 August 2024 Response to Request for Additional Information for Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition ML24204A0712024-07-29029 July 2024 Issuance of Amendment Nos. 263 and 225 Technical Specifications for Main Steam Line Tunnel Temperature ML24208A0962024-07-25025 July 2024 57243-EN 57243 - Rssc Wire & Cable LLC, Dba Marmon - Part 21 Notification ML24208A1592024-07-25025 July 2024 Regulatory Audit Plan Supporting Review of the System Development Portion of Limerick Digital Instrumentation and Controls License Amendment Request (EPID L-2022-LLA-0140) - Non-Proprietary ML24201A1662024-07-19019 July 2024 Response to Request for Additional Information for License Amendment Request for Proposed Changes to the Technical Specification Isolation Actuation Instrumentation Tables and New Turbine Enclosure Main Steam L ML24199A1842024-07-15015 July 2024 RAI-LAR for Limerick EPID: L-2024-LLA-0079- Use This Version RS-24-070, Independent Spent Fuel Storage Installation, Nine Mile Point, Units 1 and 2, Quad Cities, Units 1 and 2, R. E. Ginna - Nuclear Radiological Emergency Plan Document Revisions2024-07-12012 July 2024 Independent Spent Fuel Storage Installation, Nine Mile Point, Units 1 and 2, Quad Cities, Units 1 and 2, R. E. Ginna - Nuclear Radiological Emergency Plan Document Revisions ML24180A1572024-06-28028 June 2024 Request to Return and Replace WEC Documents (EQ-EV-386-GLIM, EQ-QR- 433-GLIM, and APP-GW-GLR-611), to Meet 10CFR2.390 Request to Withdraw from Public Disclosure Requirements ML24170A7702024-06-20020 June 2024 Individual Notice of Consideration of Issuance of Amendments to Renewed Facility Operating Licenses, Proposed No Significant Hazards Consideration Determination, Opportunity for Hearing(Epid L-2024-LLA-0079) LTR ML24166A1142024-06-14014 June 2024 Response to Requests for Additional Information (RAIs 15 Through 23) for License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog Control Systems RS-24-061, Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations2024-06-14014 June 2024 Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations ML24165A2642024-06-13013 June 2024 License Amendment Request for Proposed Changes to the Technical Specification Isolation Actuation Instrumentation Tables and New Turbine Enclosure Main Steam Line Tunnel Temperature TS 3/4.7.9 ML24151A2882024-06-10010 June 2024 Request for Withholding Information from Public Disclosure ML24151A2012024-06-10010 June 2024 Request for Withholding Information from Public Disclosure ML24150A0242024-05-29029 May 2024 Notification of Commercial Grade Dedication Inspection (05000352/2024012 and 05000353/2024012) and Request for Information ML24149A2112024-05-28028 May 2024 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 ML24079A0762024-05-23023 May 2024 Issuance of Amendments to Adopt TSTF 264 IR 05000352/20243022024-05-20020 May 2024 Revised Initial Operator Licensing Examination Report 05000352/2024302 and 05000353/2024302 RS-24-055, 2023 Corporate Regulatory Commitment Change Summary Report2024-05-17017 May 2024 2023 Corporate Regulatory Commitment Change Summary Report IR 05000352/20240012024-05-0707 May 2024 Integrated Inspection Report 05000352/2024001 and 05000353/2024001 ML24124A0432024-05-0303 May 2024 Response to Requests for Additional Information (RAIs 9 Through 14) for License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog Control Systems with RS-24-038, Relief Request Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds2024-05-0202 May 2024 Relief Request Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds RS-24-041, Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests2024-04-30030 April 2024 Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests ML24114A3222024-04-23023 April 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) - Pivot to Unit ML24109A0702024-04-18018 April 2024 Supplement to License Amendment Request to Revise Technical Specifications and Exemption Request from Requirements of 10CFRC50.52 ATWS Rule to Support the Digital Modernization Project Installation . ML24093A0912024-04-17017 April 2024 Revised Estimated Review Completion Date Concerning License Amendment Request to Replace Existing Safety-Related Analog Control Systems with a Single Digital Plant Protection System ML24106A1832024-04-15015 April 2024 Submittal of Changes to Technical Specifications Bases ML24103A2042024-04-12012 April 2024 Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition ML24096A1372024-04-0505 April 2024 Request for Exemption from Certain Requirements of 10 CFR 72.212 and 10 CFR 72.214 for Limerick Generating Station – Holtec MPC-89CBS RS-24-002, Constellation Energy Generation, LLC - Annual Property Insurance Status Report2024-04-0101 April 2024 Constellation Energy Generation, LLC - Annual Property Insurance Status Report IR 05000352/20244012024-03-19019 March 2024 Security Baseline Inspection Report 05000352/2024401 and 05000353/2024401 ML24078A2752024-03-18018 March 2024 Response to Requests for Additional Information (RAIs 5, 6, 7, and 8) for License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog IR 05000352/20240102024-03-18018 March 2024 Biennial Problem Identification and Resolution Inspection Report 05000352/2024010 and 05000353/2024010 ML24067A2942024-03-0707 March 2024 Response to Requests for Additional Information (RAI 4, RAI 1.c Revision) for License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related. IR 05000352/20230062024-02-28028 February 2024 Annual Assessment Letter for Limerick Generating Station, Units 1 and 2 (Reports 05000352/2023006 and 05000353/2023006) ML24057A4272024-02-26026 February 2024 Response to Requests for Additional Information (RAIs 1, 2, and 3) for License Amendment Request to Revise the Licensing and Design Basis to Incorporate the Replacement of Existing Safety-Related Analog Control ML24088A1102024-02-25025 February 2024 Fairbanks Morse (Fm) Part 21 Notification Report Number 23-01 Re Asco Stainless Steel Solenoid Valves 2024-09-06
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10CFR5010CFR5110CFR54February21,2013U.S.NuclearRegulatoryCommissionAttention:DocumentControlDeskWashington,DC20555-0001LimerickGeneratingStation,Units1and2FacilityOperatingLicenseNos.NPF-39andNPF-85NRCDocketNos.50-352and50-353Subject:ExelonGenerationCompany,LLCReviewoftheSafetyEvaluationReportrelatedtotheLimerickGeneratingStationLicenseRenewalApplicationReference:1.ExelonGenerationCompany,LLCletterfromMichaelP.GallaghertoNRCDocumentControlDesk,"ApplicationforRenewedOperatingLicenses",datedJune22,20112.LetterfromJohnW.Lubinski(NRC)toMichaelP.Gallagher(Exelon),"SafetyEvaluationReportRelatedtotheLicenseRenewalofLimerickGeneratingStation,Units1and2(TACNos.ME6555,ME6556)",datedJanuary10,2013IntheReference1letter,ExelonGenerationCompany,LLC(Exelon)submittedtheLicenseRenewalApplication(LRA)fortheLimerickGeneratingStation,Units1and2(LGS).IntheReference2letter,theU.S.NuclearRegulatoryCommissionissuedtheSafetyEvaluationReport(SER)relatedtotheLGSLicenseRenewalApplication.ExelonhascompleteditsreviewoftheSERandprovidescommentscontainedwithintheEnclosure.Therearenootherneworrevisedregulatorycommitmentscontainedinthisletter.Ifyouhaveanyquestions,pleasecontactMr.AIFulvio,Manager,ExelonLicenseRenewal,at610-765-5936.
U.S.NuclearRegulatoryCommissionFebruary21,2013Page2Respectfully,VicePresident-LicenseRenewalProjectsExelonGenerationCompany,LLCEnclosure:CommentsregardingtheSafetyEvaluationReportrelatedtotheLimerickGeneratingStationLicenseRenewalApplication.cc:RegionalAdministrator-NRCRegionINRCProjectManager(SafetyReview),NRR-DLRNRCProjectManager(EnvironmentalReview),NRR-DLRNRCProjectManager,NRR-DORLLimerickGeneratingStationNRCSeniorResidentInspector,LimerickGeneratingStationR.R.Janati,CommonwealthofPennsylvania
Enclosure
Page 1 of 3 Enclosure Comments regarding the Safety Evaluation Report related to the Limerick Generating Station License Renewal Application. The table on the following pages contains comments and suggestions for NRC staff consideration, based upon Exelon's review of the Limerick Generating Station, Units 1 and 2 Safety Evaluation (SER). An item number is provided in column 1, the SER Section number is given in column 2, the SER page number is listed in column 3 and the comment is provided in column 4.
Enclosure
Page 2 of 3 Comments regarding the Safety Evaluation Report related to the Limerick Generating Station License Renewal Application. Where suggested changes to the SER are provided, they are highlighted with bolded italics for inserted text and strikethroughs for deleted text. # Section # Page # Comment 1. 3.0.3.1.18 3-58 Delete the following in the third paragraph: "For penetrations 238 and 239 associated with the RHR system relief valves, the staff noted that Table 6.2-25, Note 23 of the UFSAR, indicates that through modifications performed at the first refueling the relief valve discharge line isolation valves are also subject either to local testing or removal and bench testing for subsequent LLRTs. Penetrations 238 and 239 are comprised by a "Double O-Ring with Seal Assembly," where typically, the seals per Table 6.2-25, Note 23 of the UFSAR, will be leak rate tested by pressurizing between the O-Rings." Comment:
As discussed in Exelon's response to RAI B.2.1.33-1, penetrations 238 and 239 include a suppression pool water seal, at least one isolation valve outside containment, and a closed system outside containment. Penetrations 238 and 239 are correctly discussed in the second paragraph. 2. 3.0.3.2.13 3-129 SER states that: "According to ASME Code Section XI, Subsection IWE, each "inspection period" and "inspection interval" are of 40 months and 120 months duration, respectively." Comment: Stating that each inspection period is 40 months in duration according to IWE Code is incorrect. ASME Code Section XI, Subsection IWE-2411 describes an Inspection Program B interval as 10 years. IWE-2412 and Table IWE-2412-1 indicate there are three periods in an Inspection Program B interval. Table IWE-2412-1 also indicates that periods of 4 years in duration are acceptable. LGS outages are conducted every 2 years and therefore some periods could be 4 years in duration. 3. 3.0.3.2.13 3-133 Delete the last part of the SER statement as shown in strikethrough below: "The staff reviewed the revised Commitment No. 30, as noted above, and found it acceptable because: (1) The applicant plans to recoat all local areas (less than 2.5 inches in diameter) of corrosion (pitting corrosion) that are greater than 50 mils plate thickness loss in the outage identified. in 2012 for Unit 1, and 2013 for Unit 2." Comment:
As stated in Commitment No. 30, the coating maintenance plan will be initiated in the 2012 refueling outage for unit 1 and the 2013 refueling outage for unit 2. Our commitment was revised in our September 12, 2012 letter to the staff to require recoating local areas (less than 2.5 inches in diameter) of general corrosion that are greater than 50 mils plate thickness loss in the outage they are identified. The commitment revision occurred after the Unit 1 outage in 2012 and therefore not all local areas of general corrosion greater than 50 mils plate thickness loss were recoated in that outage.
Enclosure
Page 3 of 3 Comments regarding the Safety Evaluation Report related to the Limerick Generating Station License Renewal Application. Where suggested changes to the SER are provided, they are highlighted with bolded italics for inserted text and strikethroughs for deleted text. # Section # Page # Comment 4. 3.7 3-412 Delete the part of the SER statement as shown in strikethrough below: "The staff reviewed the information in LRA Section 3, "Aging Management Review Results," and LRA Appendix B, "Aging Management Programs and Activities." On the basis of its review of the AMR results and AMPs, the staff concludes, with the exception of Open Items 3.0.3.2.13-1 and 3.0.5-1, that the applicant has demonstrated that the aging effects will be adequately managed so that the intended function(s) will be maintained consistent with the CLB for the period of extended operation, as required by 10 CFR 54.21 (a)(3). The staff also reviewed the applicable UFSAR supplement program summaries and concludes that the supplement adequately describes the AMPs credited for managing aging, as required by 10 CFR 54.21 (d).
With regard to these matters, the staff concludes, with the exception of Open Item 3.0.3.2.13-1 that there is reasonable assurance that the applicant will continue to conduct the activities authorized by the renewed licenses in accordance with the CLB, and any changes made to the CLB, in order to comply with 10 CFR 54.21 (a)(3), are in accordance with the Atomic Energy Act of 1954, as amended, and NRC regulations.".
Comment: Open items 3.0.3.2.13-1 and 3.0.5-1 are closed. 5. Appendix A, Item #38 A-24 Comment: Commitment #38 - Entry for the column entitled "Enhancements or Implementation Schedule."
The program for commitment #38 does not have enhancements.
The entry for this column should be revised to align with the LRA Appendix A, Table A.5. Delete: Program to be enhanced before the period of extended operation. Suggested reword: Program and initial inspections to be implemented before the period of extended operation.