Letter Sequence Response to RAI |
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TAC:ME4028, Steam Generator Tube Integrity (Approved, Closed) |
Results
Other: ML103620318, ML110270026, ML110280424, ML110970260, ML11280A045, ML11304A002, ML11304A109, ML12009A007, ML12164A756, ML12164A759, ML12214A607, ML12242A198, ML12264A648, ML13261A145, ML15149A280, ML15149A282, ML15183A020, ML15287A017, ML15307A022, ML15310A102, ML15337A047, ML15343A186, ML15349A918, ML19205A362, ML19205A365, ML19205A389, SBK-L-15073, Responses to Applicant/Licensee Action Items for the Inspection and Evaluation Guidelines for Pressurized Water Reactor Vessel Internals (MRP-227-A)
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MONTHYEARML1036203182010-01-21021 January 2010 Attachment 2, Document SEA-FLU-001-R-004, Rev 0, Non-Proprietary Version of Seabrook Station Reactor Pressure Vessel Fluence Evaluation at 55 EFPY Project stage: Other ML1022205712010-08-10010 August 2010 License Renewal Process Overview and Scoping Public Meeting Slides Project stage: Meeting ML1025202222010-09-20020 September 2010 Summary of Public License Renewal Overview and Environmental Scoping Meeting Related to the Review of the Seabrook Station License Renewal Application (TAC No. ME3959 and ME4028) Project stage: Meeting ML11307A1392010-10-28028 October 2010 2010/10/28 Seabrook Lr - FW: Seabrook Station, Unit No. 1 - Fire Protection Request for Additional Information Regarding License Renewal Application Project stage: RAI SBK-L-10192, Supplement 2 to License Renewal Application2010-11-15015 November 2010 Supplement 2 to License Renewal Application Project stage: Supplement ML1030905582010-11-18018 November 2010 Request for Additional Information Related to the Review of the Seabrook Station, License Renewal Application - Aging Management Programs Project stage: RAI ML1030903082010-11-18018 November 2010 Request for Additional Information Related to the Review of the Seabrook Station, License Renewal Application Project stage: RAI ML1031301592010-11-18018 November 2010 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI ML1032605542010-12-14014 December 2010 Request for Additional Information Related to the Review of the Seabrook Station, License Renewal Application (TAC No. ME4028) Aging-Management Programs Project stage: RAI ML1034202732010-12-14014 December 2010 Request for Additional Information Related to the Review of the Seabrook Station, License Renewal Application (TAC No. ME4028) - Aging Management Programs Project stage: RAI SBK-L-10204, Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Aging Management Programs2010-12-17017 December 2010 Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Aging Management Programs Project stage: Response to RAI SBK-L-10203, Response to Request for Additional Information Set 2 Related to the Review of the License Renewal Application2010-12-22022 December 2010 Response to Request for Additional Information Set 2 Related to the Review of the License Renewal Application Project stage: Response to RAI ML1034205872011-01-0505 January 2011 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI ML1034205852011-01-0505 January 2011 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI ML1034205832011-01-0505 January 2011 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI SBK-L-11003, Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Aging Management Programs - Set 52011-01-13013 January 2011 Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Aging Management Programs - Set 5 Project stage: Response to RAI SBK-L-11002, Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Aging Management Programs - Set 42011-01-13013 January 2011 Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Aging Management Programs - Set 4 Project stage: Response to RAI ML1100701282011-01-21021 January 2011 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI SBK-L-11015, Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Sets 6, 7 and 82011-02-0303 February 2011 Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Sets 6, 7 and 8 Project stage: Response to RAI ML1102700262011-02-0404 February 2011 Scoping and Screening Audit Summary Regarding the Seabrook Station License Renewal Application (TAC Number ME4028) Project stage: Other SBK-L-11027, Response to Request for Additional Information, License Renewal Application, Request for Additional Information - Set 92011-02-18018 February 2011 Response to Request for Additional Information, License Renewal Application, Request for Additional Information - Set 9 Project stage: Response to RAI ML1102602662011-02-24024 February 2011 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI ML1105509202011-03-0707 March 2011 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI ML1103506302011-03-17017 March 2011 Letter Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI ML1102804242011-03-21021 March 2011 Audit Report Regarding the Seabrook Station License Renewal Application Project stage: Other ML1109702602011-03-28028 March 2011 Nwt 817, Chemistry Control in the Seabrook Thermal Barrier Loop, Final Project stage: Other ML1107000182011-03-30030 March 2011 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI SBK-L-11062, Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Request for Additional Information - Set 112011-04-0505 April 2011 Response to Request for Additional Information NextEra Energy Seabrook License Renewal Application Request for Additional Information - Set 11 Project stage: Response to RAI SBK-L-11069, Response to Request for Additional Information - Set 12 and Associated License Renewal Application Changes2011-04-22022 April 2011 Response to Request for Additional Information - Set 12 and Associated License Renewal Application Changes Project stage: Response to RAI ML11132A0072011-05-23023 May 2011 Request for Additional Information Related to the Review of the Seabrook Station License Renewal Application Project stage: RAI SBK-L-11123, Response to Request for Additional Information, NextEra Energy Seabrook License Renewal Application, Request for Additional Information - Set 142011-06-0202 June 2011 Response to Request for Additional Information, NextEra Energy Seabrook License Renewal Application, Request for Additional Information - Set 14 Project stage: Response to RAI ML11139A1462011-06-0909 June 2011 Summary of Telephone Conference Call Held Between the NRC and Nextera Energy Seabrook, LLC, to Clarify Responses to RAI and Draft Requests for Additional Information Pertaining to the Seabrook Station LRA Project stage: Draft RAI ML11143A1652011-06-15015 June 2011 5/18/11, Summary of Telephone Conference Call Held Between NRC and Nextera Energy Seabrook, LLC, Concerning the D-RAI Pertaining to the Seabrook Station License Renewal Application Project stage: RAI SBK-L-11133, Response to Request for Additional Information - Set 14 RAI B.1.4-12011-06-24024 June 2011 Response to Request for Additional Information - Set 14 RAI B.1.4-1 Project stage: Response to RAI ML11178A3652011-07-12012 July 2011 Schedule Revision for the Safety Review of the Seabrook Station License Renewal Application Project stage: Approval ML11284A0202011-10-14014 October 2011 Summary of Telephone Conf Call Held on August 4, 2011 Between the USNRC and Nextera Energy Seabrook, Llc., Concerning Clarification of Information Pertaining to the Seabrook Station Request for Additional Information Response Project stage: RAI ML11280A0452011-10-17017 October 2011 Summary of Telephone Conference Call Held on May 5, 2011, Between the U.S. Nuclear Regulatory Commission and NextEra Energy Seabrook, LLC, Concerning Clarification of Information Pertaining to the Seabrook Station LRA Project stage: Other ML11304A0022011-11-0404 November 2011 Summary of Tele Conf Call Held on 3/18/11, Between the USNRC and NextEra Energy Seabrook, Llc., Concerning Clarification of Information Pertaining to the Seabrook Station License Renewal Application Project stage: Other ML11304A1092011-11-0404 November 2011 Summary of Tele Conf Call Held on 5/31/11, Between the USNRC and Nextera Energy Seabrook, Llc., Concerning Clarification of Information Pertaining to the Seabrook LRA Project stage: Other ML11304A1512011-11-0404 November 2011 Summary of Tele Conf Call Held on 4/8/11 Between USNRC and NextEra Energy Seabrook, Llc. Concerning Clarification of Information Pertaining to the Seabrook Station Request for Additional Information Responses Project stage: RAI ML11304A1662011-11-0404 November 2011 Summary of Tele Conf Call Held on 3/3/11, Between the USNRC and NextEra Energy Seabrook, Llc. Concerning Clarification of Information Pertaining to the Seabrook Station Request for Additional Information Responses Project stage: RAI ML12009A0072012-01-25025 January 2012 Project Manager Change for the License Renewal of Seabrook Station Project stage: Other ML12054A7662012-03-26026 March 2012 022312, Telecon Summary Between NRC and NextEra Seabrook, Discussing RAIs Response Project stage: RAI ML12160A3742012-06-0808 June 2012 Safety Evaluation Report with Open Items Related to the License Renewal of Seabrook Station Project stage: Approval ML12053A1922012-06-0808 June 2012 Safety Evaluation Report with Open Items Related to the License Renewal of Seabrook Station (TAC No. ME4028). Seabrook SER with Open Items Transmittal Letter Project stage: Approval ML12165A7422012-06-21021 June 2012 Summary of Telephone Conference Call Held on April 10, 2012, Between NRC and Energy Seabrook, LLC, Concerning the Response to Request for Additional Information Pertaining to the Seabrook Station LRA Project stage: RAI ML12165A5952012-06-22022 June 2012 Summary of Telephone Conference Call Held on May 16, 2012, Between the U.S. Nuclear Regulatory Commission and NextEra Energy Seabrook, LLC, Concerning the Response to Request for Additional Information Pertaining to the Seabrook Station LRA Project stage: RAI ML12164A9012012-06-22022 June 2012 Summary of Telephone Conference Call Held on 5/24/12, Between the NRC and NextEra Energy Seabrook, LLC Concerning the Drai Pertaining to the Seabrook Station LRA Project stage: RAI ML12164A7562012-06-22022 June 2012 Summary of Telephone Conference Call Between NRC and NextEra Seabrook Project stage: Other ML12164A7592012-07-0303 July 2012 041912, Telecon Summary Between NRC and NextEra Seabrook Project stage: Other 2011-02-04
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Category:Letter type:SBK
MONTHYEARSBK-L-23053, Radiological Emergency Plan (Ssrep), Revision 802023-06-22022 June 2023 Radiological Emergency Plan (Ssrep), Revision 80 SBK-L-23031, 2022 Annual Radioactive Effluent Release Report2023-04-28028 April 2023 2022 Annual Radioactive Effluent Release Report SBK-L-23044, 2022 Annual Radiological Environmental Operating Report2023-04-28028 April 2023 2022 Annual Radiological Environmental Operating Report SBK-L-23033, 2022 Annual Environmental Operating Report2023-04-11011 April 2023 2022 Annual Environmental Operating Report SBK-L-22093, 75 Day and 150 Day Submittal Letters2022-12-0101 December 2022 75 Day and 150 Day Submittal Letters SBK-L-22113, Radiological Emergency Plan (Ssrep), Revision 792022-11-16016 November 2022 Radiological Emergency Plan (Ssrep), Revision 79 SBK-L-22114, Independent Spent Fuel Storage Installation (Isfsi), Cask Registration2022-11-0909 November 2022 Independent Spent Fuel Storage Installation (Isfsi), Cask Registration SBK-L-22112, Independent Spent Fuel Storage Installation (ISFSI) Cask Registration2022-11-0303 November 2022 Independent Spent Fuel Storage Installation (ISFSI) Cask Registration SBK-L-22094, Relief Request 4RA-22-001, Proposed Alternative in Accordance with 10 CFR 50.55a(z)(2)2022-10-26026 October 2022 Relief Request 4RA-22-001, Proposed Alternative in Accordance with 10 CFR 50.55a(z)(2) SBK-L-22105, Supplement to 2021 Annual Radioactive Effluent Release Report2022-10-24024 October 2022 Supplement to 2021 Annual Radioactive Effluent Release Report SBK-L-22103, 5 to the Physical Security Plan, Training and Qualification Plan and Safeguards Contingency Plan2022-10-12012 October 2022 5 to the Physical Security Plan, Training and Qualification Plan and Safeguards Contingency Plan SBK-L-22102, Independent Spent Fuel Storage Installation (ISFSI) Cask Registration2022-10-0606 October 2022 Independent Spent Fuel Storage Installation (ISFSI) Cask Registration SBK-L-22080, Submittal of 10 CFR 72.48 Report of Changes, Tests and Experiments for August 2020 to July 20222022-08-12012 August 2022 Submittal of 10 CFR 72.48 Report of Changes, Tests and Experiments for August 2020 to July 2022 SBK-L-22054, SBK-L-22054 - License Amendment Request 22-01, Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections2022-06-0909 June 2022 SBK-L-22054 - License Amendment Request 22-01, Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections SBK-L-22044, 2021 Annual Radioactive Effluent Release Report2022-04-29029 April 2022 2021 Annual Radioactive Effluent Release Report SBK-L-22036, Steam Generator Tube Inspection Report2022-04-25025 April 2022 Steam Generator Tube Inspection Report SBK-L-22040, Radiological Emergency Plan (Ssrep), Revision 7822022-04-20020 April 2022 Radiological Emergency Plan (Ssrep), Revision 782 SBK-L-22024, Response to Request for Additional Information (Raj) Regarding License Amendment Request 21-01, Revise 120-Volt AC Vital Instrument Panel Requirements2022-03-0707 March 2022 Response to Request for Additional Information (Raj) Regarding License Amendment Request 21-01, Revise 120-Volt AC Vital Instrument Panel Requirements SBK-L-22003, Inservice Inspection Examination Report2022-01-24024 January 2022 Inservice Inspection Examination Report SBK-L-21126, Fourth 10 Year Interval - Inservice Inspection (ISI) Program Plan2022-01-0404 January 2022 Fourth 10 Year Interval - Inservice Inspection (ISI) Program Plan SBK-L-21135, Submittal of Changes to the Seabrook Station Technical Specification Bases2021-12-29029 December 2021 Submittal of Changes to the Seabrook Station Technical Specification Bases SBK-L-21108, Core Operating Limits Report for Cycle 222021-11-0404 November 2021 Core Operating Limits Report for Cycle 22 SBK-L-21106, Transmittal of WCAP-18607-NP, Analysis of Capsule X from the NextEra Energy Seabrook Unit 1 Reactor Vessel Radiation Surveillance Program2021-09-30030 September 2021 Transmittal of WCAP-18607-NP, Analysis of Capsule X from the NextEra Energy Seabrook Unit 1 Reactor Vessel Radiation Surveillance Program SBK-L-21105, Withdrawal of Emergency License Amendment Request 21-02, Service Water System I Ultimate Heat Sink One-Time Allowed Outage Time (AOT) Extension2021-09-27027 September 2021 Withdrawal of Emergency License Amendment Request 21-02, Service Water System I Ultimate Heat Sink One-Time Allowed Outage Time (AOT) Extension SBK-L-21103, Request for Exercise of Enforcement Discretion2021-09-25025 September 2021 Request for Exercise of Enforcement Discretion SBK-L-21104, Emergency License Amendment Request 21-02, Service Water System I Ultimate Heat Sink Onetime Allowed Outage Time (AOT) Extension2021-09-25025 September 2021 Emergency License Amendment Request 21-02, Service Water System I Ultimate Heat Sink Onetime Allowed Outage Time (AOT) Extension SBK-L-21098, Supplement to License Amendment Request 21-01, Revise 120-Volt AC Vital Instrument Panel Requirements2021-09-22022 September 2021 Supplement to License Amendment Request 21-01, Revise 120-Volt AC Vital Instrument Panel Requirements SBK-L-21083, NextEra Energy Seabrook, LLC - Relief Request 3IR-18 and 3IR-19 for End of Third 10-Year ISI Interval for Examinations with Limited Coverage2021-08-18018 August 2021 NextEra Energy Seabrook, LLC - Relief Request 3IR-18 and 3IR-19 for End of Third 10-Year ISI Interval for Examinations with Limited Coverage SBK-L-21067, License Amendment Request 21-01, Revise 120-Volt AC Vital Instrument Panel Requirements2021-07-21021 July 2021 License Amendment Request 21-01, Revise 120-Volt AC Vital Instrument Panel Requirements SBK-L-21049, Revision to Updated Final Response to NRC Generic Letter 2004-022021-06-24024 June 2021 Revision to Updated Final Response to NRC Generic Letter 2004-02 SBK-L-21056, Response to Request for Additional Information Regarding Seabrook Steam Generator Tube Inspection Report Review References:2021-05-20020 May 2021 Response to Request for Additional Information Regarding Seabrook Steam Generator Tube Inspection Report Review References: SBK-L-21045, Submittal of 2020 Annual Radioactive Effluent Release Report2021-04-30030 April 2021 Submittal of 2020 Annual Radioactive Effluent Release Report SBK-L-21044, 2020 Annual Radiological Environmental Operating Report2021-04-30030 April 2021 2020 Annual Radiological Environmental Operating Report SBK-L-21042, Response to RIS 2021-01 Preparation and Scheduling of Operator Licensing Examinations2021-04-22022 April 2021 Response to RIS 2021-01 Preparation and Scheduling of Operator Licensing Examinations SBK-L-21033, Response to Request for Additional Information (RAI) Regarding License Amendment Request (LAR) 20-02, Resolve Non-Conservative Heat Flux Hot Channel Factor (Fo(Z)) Requirements2021-03-24024 March 2021 Response to Request for Additional Information (RAI) Regarding License Amendment Request (LAR) 20-02, Resolve Non-Conservative Heat Flux Hot Channel Factor (Fo(Z)) Requirements SBK-L-21023, Radiological Emergency Plan (Ssrep), Revision 772021-03-0404 March 2021 Radiological Emergency Plan (Ssrep), Revision 77 SBK-L-20154, Submittal of Changes to the Seabrook Station Technical Specification Bases2020-12-22022 December 2020 Submittal of Changes to the Seabrook Station Technical Specification Bases SBK-L-20149, Response to Request for Additional Information in Respect to One-Time Exemption from 10 CFR 73, Appendix B, Section VI, Subsection C.3.(I)(1) Regarding Annual Force-on-Force (FOF) Exercises, Due to Covid 19 Pandemic2020-12-0808 December 2020 Response to Request for Additional Information in Respect to One-Time Exemption from 10 CFR 73, Appendix B, Section VI, Subsection C.3.(I)(1) Regarding Annual Force-on-Force (FOF) Exercises, Due to Covid 19 Pandemic SBK-L-20146, One-Time Exemption Request for the Biennial Emergency Preparedness Exercise Requirements of 10 CFR 50, Appendix E. IV.F.2.b and IV.F.2.c2020-12-0303 December 2020 One-Time Exemption Request for the Biennial Emergency Preparedness Exercise Requirements of 10 CFR 50, Appendix E. IV.F.2.b and IV.F.2.c SBK-L-20144, Request for a One-Time Exemption from 10 CFR 73, Appendix B, Section VI Subsection C.3.(1)(1) Regarding Annual Force-on-Force (FOF) Exercises, Due to Covid 19 Pandemic2020-11-23023 November 2020 Request for a One-Time Exemption from 10 CFR 73, Appendix B, Section VI Subsection C.3.(1)(1) Regarding Annual Force-on-Force (FOF) Exercises, Due to Covid 19 Pandemic SBK-L-20143, Withdrawal of Exemption Request Supporting Updated Final Response to NRC Generic Letter 004-022020-11-19019 November 2020 Withdrawal of Exemption Request Supporting Updated Final Response to NRC Generic Letter 004-02 SBK-L-20132, Fourth Interval Inservice Testing (IST) Program2020-10-21021 October 2020 Fourth Interval Inservice Testing (IST) Program SBK-L-20127, Generator Tube Inspection Report2020-10-20020 October 2020 Generator Tube Inspection Report SBK-L-20117, Response to Request for Additional Information Regarding Technical Specification 3/4.8.1 for a One-Time Extension of Allowed Outage Time License Amendment Request2020-09-23023 September 2020 Response to Request for Additional Information Regarding Technical Specification 3/4.8.1 for a One-Time Extension of Allowed Outage Time License Amendment Request SBK-L-20103, Inservice Inspection Examination Report2020-07-27027 July 2020 Inservice Inspection Examination Report SBK-L-20092, Response to Request for Additional Information Regarding License Amendment Requests to Adopt TSTF-411 and TSTF-4182020-07-13013 July 2020 Response to Request for Additional Information Regarding License Amendment Requests to Adopt TSTF-411 and TSTF-418 SBK-L-20068, License Amendment Request 20-01, One-Time Change to the Seabrook Technical Specifications A.C. Sources - Operating2020-07-13013 July 2020 License Amendment Request 20-01, One-Time Change to the Seabrook Technical Specifications A.C. Sources - Operating SBK-L-20085, Supplement to Exemption Request for Access Authorization and Fitness for Duty Requirements Due to COVID-19 Pandemic2020-06-16016 June 2020 Supplement to Exemption Request for Access Authorization and Fitness for Duty Requirements Due to COVID-19 Pandemic SBK-L-20077, Core Operating Limits Report for Cycle 212020-06-0101 June 2020 Core Operating Limits Report for Cycle 21 SBK-L-20057, Response to Request for Additional Information Regarding Degraded Voltage Time Delay Setpoint License Amendment Request2020-05-20020 May 2020 Response to Request for Additional Information Regarding Degraded Voltage Time Delay Setpoint License Amendment Request 2023-06-22
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Text
NExTerao ENERGY _
February 23, 2015 10 CFR 54 SBK-L-15024 Docket No. 50-443 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Seabrook Station Response to Requests for Additional Information for the Review of the Seabrook Station, License Renewal Application- SET 23 (TAC NO. ME4028)
Relating to the Alkali-Silica Reaction (ASR) Monitoring Program
References:
- 1. NextEra Energy Seabrook, LLC letter SBK-L-10077, "Seabrook Station Application for Renewed Operating License," May 25, 2010. (Accession Number ML101590099)
- 2. NRC Letter, Requests For Additional Information for the Review of the Seabrook Station, License Renewal Application- Set 23 (TAC NO. ME4028), November 25,2014 (Accession Number ML14301A316)
In Reference 1, NextEra Energy Seabrook, LLC (NextEra) submitted an application for a renewed facility operating license for Seabrook Station Unit 1 in accordance with the Code of Federal Regulations, Title 10, Parts 50, 51, and 54. contains NextEra responses to the information requested in Reference 2 for RAIs B.2.1.31A-2(a) and B.2.1.31A-7. Within these responses, changes to LRA Appendix A-Updated UFSAR Supplement, and Appendix B - Aging Management Programs associated with the Alkali-Silica Reaction Monitoring Program are provided. The changes are explained, and where appropriate to facilitate understanding, portions of the LRA are repeated with the change highlighted by strikethroughs for deleted text and bolded italics for inserted text. In some instances the entire text of a section has been replaced or added. In these cases a note is included in the introduction indicating the replacement of the entire text of the section.
As discussed with the staff in a teleconference on January 30, 2015; NextEra will require additional time to fully provide the staff with requested information for the remaining RAIs, which is dependent on ongoing ASR testing. NextEra anticipates providing a response to the remaining RAIs no later than June 30, 2015.
NextEra Energy Seabrook, LLC, P.O. Box 300, Lafayette Road, Seabrook, NH 03874
U.S. Nuclear Regulatory Commission SBK-L- 15024 /Page 2 This letter contains no new commitments.
If there are any questions or additional information is needed, please contact Mr. Edward J.
Carley, Engineering Supervisor - License Renewal, at (603) 773-7957.
If you have any questions regarding this correspondence, please contact Mr. Michael Ossing Licensing Manager, at (603) 773-7512.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on February 23, 2015 erely'/
- Ge-an Curtland Site Vice President NextEra Energy Seabrook, LLC - Seabrook Station License Renewal Application, Response to Requests for Additional Information - Set 23, RAIs Relating to the Alkali-Silica Reaction (ASR) Monitoring Program for the Seabrook Station License Renewal Application cc: D. H. Dorman NRC Region I Administrator J. G. Lamb NRC Project Manager P. C. Cataldo NRC Senior Resident Inspector R. A. Plasse NRC Project Manager, License Renewal L. M. James NRC Project Manager, License Renewal Mr. Perry Plummer Director Homeland Security and Emergency Management New Hampshire Department of Safety Division of Homeland Security and Emergency Management Bureau of Emergency Management 33 Hazen Drive Concord, NH 03305 Mr. John Giarrusso, Jr., Nuclear Preparedness Manager The Commonwealth of Massachusetts Emergency Management Agency 400 Worcester Road Framingham, MA 0 1702-5399
Enclosure 1 to SBK-L- 15024 Seabrook Station License Renewal Application Requests for Additional Information - Set 23 Response to RAIs Relating to the Alkali-Silica Reaction (ASR) Monitoring Program for the Seabrook Station License Renewal Application
U.S. Nuclear Regulatory Commission SBK-L-15024 /Page 2 B.2.1.31A-2(a)
Background
In its response to Request for Additional Information (RAI) B.2.1.3 1A-2, part 4, dated May 15, 2014, regarding criteria by which the frequency of inspection may be changed, the applicant stated that there are no plans to change the inspection frequency. However, the applicant also stated that if the "ASR monitoring results" indicate a need to amend the acceptance criteria or frequency of inspection, it will take such action under the "operating experience" program element of the Alkali-Silica Reaction (ASR) Monitoring Program.
Issue It is not clear if the "ASR monitoring results" will be used to increase the inspection interval to greater than the 5-year interval specified in American Concrete Institute (ACI) 349.3R.
Changing the inspection frequency for either tier two or tier three structures beyond 5 years may inhibit the applicant's ability to adequately monitor for expansion due to cracking from reaction with aggregates.
Request State whether the frequencies of inspection, established within the ASR Monitoring Program (Tier 2 and 3), will be allowed to exceed the 5-year interval generally accepted for concrete inspections per ACI 349.3R. If so, provide a justification for how inspection frequencies, exceeding a 5-year interval, will ensure adequate aging-management of ASR-affected structures.
NextEra Energy Seabrook Response to RAI B.2.1.31A-2(a)
The ASR Monitoring Program augments the Structural Monitoring Program in which the inspection frequencies were established based on the recommended guidelines contained in chapter 6 of ACI 349.3R-96.
The frequencies of inspection of Tier 3 and Tier 2 areas currently specified in the ASR Monitoring Program may change based on trending, however the inspection frequencies will not exceed the 5-year frequency specified in the Structures Monitoring Program for Harsh Environment Areas.
Inspection frequencies for Mild Environments are discussed below in response to RAI B.2.1.31A-7 RAI B.2.1.31A-7
Background
LRA Section B.2.1.31 A, dated May 16, 2012, states under the "Monitoring and Trending" program element that "newly discovered areas exhibiting visual signs of ASR are identified during routinely performed Structural Monitoring Program inspections." LRA Section B.2.1.31 states that periodic visual inspections are performed at a frequency determined by the characteristics of the environment in which the structure is found. LRA Section B.2.1.31 further
U.S. Nuclear Regulatory Commission SBK-L-15024 /Page 3 states that for structures in a harsh environment, inspections are performed on a 5 year basis whereas for structures in a mild environment, inspections are performed on a 10 year basis. The applicant's response to RAI B.2.1.31-5, dated February 3, 2011, describes what is defined as a harsh environment and lists the frequency of visual inspections for the structures within the scope of license renewal, based on the structure category defined in ACI-349.3R.
Issue ASR has been observed throughout the site in concrete structures exposed to various environments. Considering that the ASR Monitoring Program augments the Structures Monitoring Program and ASME Section XI, Subsection IWL Program, and that "newly discovered" areas requiring monitoring for ASR progression will be identified during routine inspections in accordance with these programs, the staff is concerned that the frequency of inspection for structures in a mild environment, i.e., 10 years, may not identify "newly discovered" areas in a manner that would provide for adequate monitoring and trending.
Request The staff requests that the applicant:
- 1. State whether the ten-year inspection frequency is adequate for identifying new locations affected by ASR in structures exposed to a mild environment, and if so, provide the basis why the 10-year frequency will provide for adequate monitoring and trending, during the period of extended operation.
- 2. If these structures in a mild environment will be monitored at a frequency other than that originally described in the License Renewal Application (LRA), state the new inspection frequency and provide the basis for its determination.
NextEra Energy Seabrook Response to RAI B.2.1.3 1A-7
- 1. Per the Structural Monitoring Program a Harsh Environment is defined as:
"...an area subjected to outside ambient conditions, high moisture, wet or humidity, very high ambient temperatures orfrequent large cycling of temperatures (including freezing/thawing),frequent exposure to caustic materials,or extremely high radiation levels. "
The Structural Monitoring Program defines and classifies a Mild Environment as an area that is not a Harsh Environment.
Based on the definition above ASR is not expected to be discovered in concrete structures exposed to a Mild Environment as a Mild Environment lacks the sufficient moisture needed to produce an Alkali-Silica Reaction. Accordingly, the 10-year inspection frequency is appropriate
U.S. Nuclear Regulatory Commission SBK-L-15024 /Page 4 for monitoring and trending other concrete degradation mechanisms for structures exposed to Mild Environments such as those described in ACI 349.3R-96 and ACI 201.1R-92.
- 2. To date the progression of ASR degradation has not been detected in a concrete structure located in a mild environment, therefore, the structures in a Mild Environment will continue to be monitored on a 10 year frequency as originally described in the LRA.
Note: Inspection frequencies increase when a deficiency is found in an area for all Environments (deficiencies include but are not limited to ASR).
Based on the above definition of what constitutes a Harsh Environment, LRA Section B.2.1.31 (Structures Monitoring Program), has been revised as follows:
The Seabrook Station Structures Monitoring Program includes periodic visual inspection of structures and structural components for the detection of aging effects specific for that structure.
These inspections are completed by qualified individuals at a frequency determined by the characteristics of the environment in which the structure is found. A structure found in a harsh environment is defined as one that is in an area that is routine! subject to outside ambient conditions, very high temperature, high moisture or humidity, frequent large cycling of temperatures, frequent exposure to caustic materials, or extremely high radiation levels. For structures in these harsh environments, the inspection is conducted on a five year basis (plus or minus one year due to outage schedule and two inspections within ten years). Structures not found in areas qualifying as a harsh environment are classified as being in a mild environment, and are inspected on a ten year basis (plus or minus one year due to outage schedule and two inspections within twenty years).