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MONTHYEARML0705302962007-02-20020 February 2007 Technical Specification Change Request - Type a Test Extension Project stage: Other ML0721405102007-08-13013 August 2007 Electronic Transmission, Draft Request for Additional Information Re One Time Integrated Leak Rate Interval Extension from 10 to 15 Years (Tac No. MD5198 and MD5199) Project stage: Draft RAI ML0726003552007-09-14014 September 2007 Response to Request for Additional Information Technical Specifications Change Request - Type a Test Extension Project stage: Response to RAI ML0729200082007-10-18018 October 2007 Response to Request for Additional Information on Technical Specifications Change Request - Type a Test Extension Project stage: Response to RAI ML0731300222007-11-0909 November 2007 Electronic Transmission, Draft Request for Additional Information Regarding One Time Integrated Leak Rate Interval Extension from 10 to 15 Years Project stage: Draft RAI ML0734104622007-12-13013 December 2007 Request for Additional Information Regarding Proposed Type a Test Extension Project stage: RAI ML0803107692008-02-20020 February 2008 License Amendment, Allowed a One Time Type a Test Extension Project stage: Other ML0803107862008-02-20020 February 2008 Technical Specifications Amendment 190/License NPF-39, Allowed a One Time Type a Test Extension Project stage: Other ML0803108262008-02-20020 February 2008 Technical Specifications Amendment 151/License NPF-85, Allowed a One Time Type a Test Extension Project stage: Other 2007-02-20
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Category:Memoranda
MONTHYEARML22308A2392022-11-0808 November 2022 Documentation of Approval for Longer Review Period for Limerick Digital Instrumentation and Control License Amendment Requests Acceptance Review ML22034A3932022-02-16016 February 2022 Calendar Year 2021 Security Baseline Completion Memo ML21277A2472021-11-0505 November 2021 Notification of Significant Licensing Action - Proposed Issuance of Order Approving the Transfer of Licenses for Which a Hearing Has Been Requested - Exelon Generation Company, LLC; Et. Al ML18138A3442018-05-22022 May 2018 2018 Limerick Summary of Public Meeting and Attendance List ML17142A2382017-05-25025 May 2017 OEDO-17-00280 - Briefing Package for Drop-In Visit on June 9, 2017, by Senior Management of Exelon Generation Company, LLC with Chairman Svinicki, Commissioner Baran, and Commissioner Burns ML17037B8502017-02-0606 February 2017 08/21/1975 Notice of Meeting with Architect Engineers of Mark II Owners to Discuss Load Combinations and Analytical Techniques for Determining Stresses in Mechanical Components and Structures of Mark II Containments ML16344A2192016-12-12012 December 2016 Safety Evaluation for Limerick, Units 1 and 2, Proposed License Amendment to Revise the Technical Specifications to Address the High-Pressure Coolant Injection Operability Requirement Under Low Reactor Pressure Conditions 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 ML16088A2052016-03-28028 March 2016 Enclosure 1 - (72.30 DFP Reviews to Be Completed 2015) - Memo T Bowers from s Ruffin, Technial Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations ML16088A2042016-03-28028 March 2016 Memo T Bowers from s Ruffin, Technical Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations W/ Encl 2 (Template) ML16085A0252016-03-24024 March 2016 Draft Request for Additional Information ML16075A3292016-03-16016 March 2016 OEDO-16-00165 - Briefing Package for Drop-In Visit on March 23, 2016, by Senior Management of Exelon Generation Company, LLC with the NRC Executive Director for Operations ML15202A3782015-07-21021 July 2015 Draft Request for Additional Information ML15028A4502015-01-27027 January 2015 LG-15-014 Verification of Readiness for Supplemental Inspection at Limerick Generating Station ML15035A1122015-01-10010 January 2015 LTR-15-0061 Lewis Cuthbert, President, Alliance for a Clean Environment, ACE, Letter Lessons Learned from Fukushima Related to Limerick Nuclear Plant ML14267A0762014-09-23023 September 2014 Acknowledgement Letter: B. Shank and C. Shank Regarding Limerick Nuclear Power Plant ML14247A6482014-09-10010 September 2014 Supplemental Safety Evaluation Report ML14190A9442014-08-11011 August 2014 Forwarding of Supplement 1 to the Safety Evaluation Report Related to the License Renewal of Limerick Generating Station, Units 1 and 2, Docket Numbers 50-352 and 50-353, to the Advisory Committee on Reactor Safeguards ML14210A5762014-07-29029 July 2014 Draft Request for Additional Information (Tac Nos. MF3198 and MF3199) ML14202A5182014-07-21021 July 2014 Draft Request for Additional Information (Tac Nos. MF3085 and MF3086) ML14055A5322014-03-11011 March 2014 Summary of Telephone Conference Call Held on January 30, 2014. Between the U.S. Nuclear Regulatory Commission and Exelon Generation Company, LLC, Concerning Requests for Additional Information Pertaining to the Limerick Generating Station, ML14066A0972014-03-0707 March 2014 Draft Request for Additional Information ML14030A0942014-01-29029 January 2014 Draft Request for Additional Information (TAC Nos. MF1399 and MF1400) ML13309A0802013-12-11011 December 2013 Memorandum to File: Transcript for 10 CFR 2.206 Petition from Beyond Nuclear (Et Al) Regarding General Electric Mark I and Mark II Boiling-Water Reactors ML13190A3522013-07-10010 July 2013 Notice of Forthcoming Teleconference with Exelon Generation Company, LLC ML13156A0902013-06-26026 June 2013 Dseis Meeting Summary ML13109A5392013-05-0303 May 2013 5/23/2013 - Meeting Notice: Forthcoming Meeting to Discuss the Draft Supplemental Environmental Impact Statement for the License Renewal of Limerick Generating Station, Units 1 and 2 ML12348A6962012-12-17017 December 2012 1/3/2013 - Notice of Forthcoming Meeting with Exelon Generation Company, LLC, to Discuss Requests for Additional Information Regarding Exelon Physical Security Plans ML1227704332012-10-0101 October 2012 Minutes of the ACRS Plant License Renewal Subcommittee Meeting on September 5, 2012 (Open) 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 ML1210403072012-04-12012 April 2012 Draft Request for Additional Information ML12083A2112012-04-11011 April 2012 Summary of Telephone Conference Call Held on February 23, 2012 Between the U.S. Nuclear Regulatory Commission and Exelon Generating Company, LLC, Concerning Request for Additional Information Pertaining to the Limerickgenerating Station, Li ML1208602902012-03-26026 March 2012 Notice of Forthcoming Public Meeting with Exelon Generation to Discuss Future Fleet Submittal Regarding Licensed Operator Eligibility Requirements ML1135300442011-12-19019 December 2011 Electronic Transmission, Draft Request for Additional Information Regarding Proposed Technical Specification Safety Limit Minimum Critical Power Ratio Changes 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) ML11272A2372011-10-26026 October 2011 Summary of Public Scoping Meetings Related to the Review of the Limerick Generating Station, Units 1 and 2, LRA ML11251A0672011-09-12012 September 2011 Forthcoming Meeting to Discuss the License Renewal Process and Environmental Scoping for Limerick Generating Station, Units 1 and 2, License Renewal Application ML11245A0082011-09-0606 September 2011 09/22/2011 Notice of Forthcoming Meeting to Discuss the License Renewal Process and Environmental Scoping for Limerick Generating Station, Units 1 and 2, License Renewal Application ML1124104422011-08-29029 August 2011 Corrected Transcript for 10 CFR 2.206 Petition Regarding Limerick Scrams - Second Teleconference with Petitioner ML1121606122011-08-0808 August 2011 Memorandum to File: Transcript for 10 CFR 2.206 Petition Regarding Limerick Scrams - Second Teleconference with Petitioner ML1117803082011-06-28028 June 2011 Memo to File Documenting Transcript for 10 CFR 2.206 Petition Regarding Limerick Scrams - Initial Teleconference with Petitioner ML1114403042011-05-24024 May 2011 Summary of Annual Assessment Meeting, Limerick Generating Station, on May 18, 2011 ML1103800542011-03-18018 March 2011 Summary of Telephone Conference Call Held on 1/28/11, Between the USNRC and Exelon Generation Company, LLC, Concerning the Proposed Limerick Generating Station, Units 1 and 2, License Renewal Application ML1105502222011-02-24024 February 2011 Electronic Transmission, Draft Request for Additional Information Regarding Proposed Technical Specification Allowed Outage Time Extensions to Support Residual Heat Removal Service Water (RHRSW) Maintenance ML1103304292011-02-0303 February 2011 Electronic Transmission, Draft Request for Additional Information Regarding Proposed Technical Specification Safety Limit Minimum Critical Power Ratio Changes ML1032004852010-11-16016 November 2010 Electronic Transmission, Draft Request for Additional Information Proposed Technical Specification Changes to High Pressure Coolant Injection Equipment Room Delta Temperature Trip Setpoint ML1032105082010-11-16016 November 2010 Units 1 & 2 - Electronic Transmission, Draft Request for Additional Information Regarding Request to Implement Emergency Action Level Scheme Change to NEI 99-01, Revision 5 2022-02-16
[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
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August 13, 2007MEMORANDUM TO: Harold K. Chernoff, ChiefPlant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationFROM:Peter Bamford, Project Manager/ra/Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
SUBJECT:
LIMERICK GENERATING STATION, UNIT NOS 1 AND 2 -ELECTRONIC TRANSMISSION, DRAFT REQUEST FOR ADDITIONAL INFORMATION REGARDING ONE TIME INTEGRATED LEAK RATE INTERVAL EXTENSION FROM 10 TO 15 YEARS (TAC NOS. MD5198 AND MD5199)The attached draft request for additional information (RAI) was sent by electronictransmission on August 2, 2007, to Mr. Thomas Loomis, at Exelon Generation Company, LLC (Exelon). This draft RAI was transmitted to facilitate the technical review being conducted by the Nuclear Regulatory Commission (NRC) staff and to support a conference call with Exelon in order to clarify certain items in the licensee's submittal. The draft RAI is related to Exelon's submittal dated February 20, 2007, regarding a request to extend the Containment type A Integrated Leak Rate Test interval for Limerick Generating Station, Units 1 and 2 from 10 to 15 years. The draft questions were sent to ensure that the questions were understandable, the regulatory basis for the questions was clear, and to determine if the information was previously docketed. Additionally, review of the draft RAI would allow Exelon to determine and agree upon a schedule to respond to the RAI. This memorandum and the attachment do not represent an NRC staff position.
Docket Nos. 50-352 and 50-353
Enclosure:
As stated August 13, 2007MEMORANDUM TO: Harold K. Chernoff, ChiefPlant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationFROM:Peter Bamford, Project Manager /ra/Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
SUBJECT:
LIMERICK GENERATING STATION, UNIT NOS 1 AND 2 -ELECTRONIC TRANSMISSION, DRAFT REQUEST FOR ADDITIONAL INFORMATION REGARDING ONE TIME INTEGRATED LEAK RATE INTERVAL EXTENSION FROM 10 TO 15 YEARS (TAC NOS. MD5198 AND MD5199)The attached draft request for additional information (RAI) was sent by electronictransmission on August 2, 2007, to Mr. Thomas Loomis, at Exelon Generation Company, LLC (Exelon). This draft RAI was transmitted to facilitate the technical review being conducted by the Nuclear Regulatory Commission (NRC) staff and to support a conference call with Exelon in order to clarify certain items in the licensee's submittal. The draft RAI is related to Exelon's submittal dated February 20, 2007, regarding a request to extend the Containment type A Integrated Leak Rate Test interval for Limerick Generating Station, Units 1 and 2 from 10 to 15 years. The draft questions were sent to ensure that the questions were understandable, the regulatory basis for the questions was clear, and to determine if the information was previously docketed. Additionally, review of the draft RAI would allow Exelon to determine and agree upon a schedule to respond to the RAI. This memorandum and the attachment do not represent an NRC staff position.
Docket Nos. 50-352 and 50-353
Enclosure:
As stated DISTRIBUTION
- Public RidsNrrPMPBamfordLPL1-2 R/F JBettle, NRRRPalla, NRRGThomas, NRRAccession No.: ML072140510*via memorandumOFFICELPL1-2/PMAPLA/BCSCVB/BCEGCB/BCNAMEPBamfordMRubin*RDennig*KManoly*
DATE8/13/074/26/076/21/0708/01/2007OFFICIAL RECORD COPY EnclosureDRAFTREQUEST FOR ADDITIONAL INFORMATIONREGARDING TECHNICAL SPECIFICATION CHANGES FORTYPE A INTEGRATED LEAK RATE TEST INTERVAL EXTENSIONLIMERICK GENERATING STATION, UNIT NOS. 1 AND 2DOCKET NOS. 50-352 AND 50-353By letter dated February 20, 2007 (Agencywide Documents Access and Management System(ADAMS) Accession No. ML070530296), Exelon Generation Company, LLC, submitted a license amendment request (LAR) for Limerick Generating Station (LGS), Unit Nos. 1 and 2.
The proposed amendment would provide a one-time extension of the containment Type A Integrated Leak Rate Test interval from 10 years to 15 years for each unit. The Nuclear Regulatory Commission (NRC) Staff has been reviewing the submittal and hasdetermined that additional information is needed to complete its review.
1.The approach used to assess the risk impact of the integrated leak rate test (ILRT)extension considered only internal events risk. As stated in Section 2.2.4 of Regulatory Guide 1.174, the risk-acceptance guidelines (in this case, for large early release frequency or LERF) are intended for comparison with a full-scope assessment risk assessment, including internal and external events. Consistent with this guidance, and to the extent supportable by the available risk models for Limerick Generating Station, provide an assessment of the impact of the requested change on LERF and totalLERF (based on the Nuclear Energy Institute Interim Guidance Methodology) when external events are included within the assessment.2.In addition to extending the ILRT test interval from 10 to 15 years, the licenseamendment request would extend the drywell-to-suppression chamber bypass test (DWBT) interval to 15 years. The U.S. Nuclear Regulatory Commission has issued similar amendments to the operating licenses for Clinton, Susquehanna, and several other boiling-water reactor (BWR) plants. These interval extensions were based in part on a determination that the combined effect of both test interval extensions on risk was small. To provide insights into cumulative risk impacts, provide an assessment of the combined effect of the ILRT and DWBT interval extensions on risk (i.e., population dose, LERF, and conditional containment failure probability) similar to that provided for these other BWRs.3.In Section 1.2, Background, last paragraph on page five of the risk impact assessmentof your application you state, "Furthermore, NRC regulations 10 CFR 50.55a(b)(2)(ix)(E), require licensees to conduct visual inspections of theaccessible areas of the interior of the containment three times every 10 years. These requirements will not be changed as a result of the extended ILRT interval." Explain the relevance of this information, given that in your Attachment 1, Evaluation ofProposed Change, Reference (4) - U. S. Nuclear Regulatory Commission letter dated January 24, 2007, "Limerick Generation Station, Units 1 and 2 - Relief Requests 13R-01 For Alignment of lnservice Inspection and Containment lnservice Inspection (TAC NOS.
MD2727 AND MD 2728)", you were approved to synchronize containment inspection programs in going from the ASME Code,Section XI, 1992 Edition through the 1992Addenda to the 2001 Edition through the 2003 Addenda. Will LGS be applyingSubsection IWE 1998 or later Edition throughout the requested ILRT interval?
10 CFR 50.55a(b)(2)(ix) reads:(ix)"Examination of metal containments and the liners of concretecontainments. Licensees applying Subsection IWE, 1992 Edition with the1992 Addenda, or the 1995 Edition with the 1996 Addenda, shall satisfy the requirements of paragraphs (b)(2)(ix)(A) through (b)(2)(ix)(E) of this section. Licensees applying Subsection IWE, 1998 Edition through the latest edition and addenda incorporated by reference in paragraph (b)(2) of this section, shall satisfy the requirements of paragraphs (b)(2)(ix)(A),
(b)(2)(ix)(B), and (b)(2)(ix)(F) through (b)(2)(ix)(I) of this section.
"4. In your LAR Attachment 1, Evaluation of Proposed Change, Section 4.2 Integrated LeakRate History, on page three of 11 you provide historical ILRT results for each unit.
Were there any changes in test or calculation methodology that might affect comparison of one test result to another for any of the tests for which results are listed? What were the corresponding combined Type B and Type C Test leakage rate totals, either in weight percent per day or volume/time with conversion factor to weight percent per day?5.Since the ILRT, the local leak rate test (LLRT), and containment inservice inspection(CISI) program collectively ensure leak-tight integrity and structural integrity of the containment, the NRC staff requests the following information to complete the review of the LAR.a.With reference to the fourth paragraph in Section 4.1 of Attachment 1 of theLAR, please indicate the current test intervals under Option B for the Type B and Type C LLRT. Please provide a schedule for the Type B and Type C tests on containment pressure-retaining boundaries that are or will be scheduled to be performed prior to and during the requested 5-year extension period.b.Section 4.4, Containment Inspections, in Attachment 1 of the LAR, do notprovide any explicit discussion regarding the implementation of the Appendix J Option B general visual inspection requirements. In the LGS Technical Specifications, the Containment Leakage Rate Testing Program is based on RG 1.163. Regulatory Position C.3 of RG 1.163 specifies that visual examinations should be conducted prior to initiating a Type A test, and during two other refueling outages before the next Type A test based on a 10-year ILRT interval. For LGS Units 1 & 2, please discuss your program for visual inspections (with schedule and methods) that meets this requirement. Please indicate with schedule how you would supplement this 10-year interval-based visual inspections requirement for the requested 15-year ILRT interval to ensure a continuing means of early uncovering of evidence of containmentstructural deterioration. c.With reference to Section 4.4 (page 5) of Attachment 1 of the LAR, pleasedescribe with schedule and methods the IWE/IWL CISI program examinations that are or will be scheduled to be performed on containment pressure-retaining structures, systems and components prior to and during the requested 5-year extension period. This should also include your schedule and methods for examination and testing of seals, gaskets, moisture barriers and bolted connections associated with containment pressure boundary. Please provide this information for LGS Units 1 and 2.
Also, indicate the dates when the most recent IWE examinations were completed for Unit 1.
d.Please provide information of instances, if any, during implementation of theIWE/IWL CISI program at LGS Units 1 & 2 where existence of or potential for degradation conditions in inaccessible areas of the primary containment structure and metallic liners were identified and evaluated based on conditions found in accessible areas as required by 10 CFR 50.55a(b)(2)(viii)(E) and 10 CFR 50.55a(b)(2)(ix)(A). If there were any instances of such conditions, please discuss the findings and actions taken.e.Are bellows used on penetrations through containment pressure-retainingboundaries at LGS Units 1 & 2? If so, please provide information on their location, inspection, testing and operating experience with regard to detection of leakage through penetration bellows.