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Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
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Results
Other: ML060890398, ML060950574, ML073511698, ML081200606, ML081790538, ML090980515, ML092080216, ML092440479, ML100190011, NRC 2009-0113, Generic Letter 2004-02, Potential Impact for Debris Blockage in Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors (TAC Nos. MC4705/4706), NRC 2011-0010, Plan for Completion of Actions for Generic Letter 2004-02 Potential Impact for Debris Blockage in Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors
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MONTHYEARML0515202022005-06-0202 June 2005 6/2/05, Turkey Point, RAI, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors Project stage: RAI ML0515201832005-06-0202 June 2005 Request for Additional Information, Generic Letter 2004-02 Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors. Project stage: RAI ML0515202272005-06-0303 June 2005 6/3/05, Seabrook, RAI, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-Water Reactors Project stage: RAI ML0603703962006-02-0808 February 2006 RAI, Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design-Basis Accidents at Pressurized-Water Reactors Project stage: RAI ML0603704382006-02-0808 February 2006 Request for Additional Information Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design-basis Accidents at Pressurized-water Reactors Project stage: RAI ML0603801332006-02-0909 February 2006 Request for Additional Information Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design-Basis Accidents at Pressurized-Water Reactors Project stage: RAI ML0603704912006-02-0909 February 2006 RAI - Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design-Basis Accidents at Pressurized-Water Reactors Project stage: RAI ML0608903982006-04-11011 April 2006 Requested Extension of Completion Schedule for NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors Project stage: Other ML0609505742006-04-13013 April 2006 Approval of GSI-191/GL 2004-02 Extension Request Project stage: Other NRC 2007-0085, Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors2007-11-16016 November 2007 Response to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Request L-2007-155, Request for Extension of Completion Date of the Generic Letter 2004-02 Actions2007-12-0707 December 2007 Request for Extension of Completion Date of the Generic Letter 2004-02 Actions Project stage: Request ML0735116982007-12-20020 December 2007 GSI-191/GL 2004-02 Extension Request Approval (Tac No. MC4705/4706) Project stage: Other L-2008-030, Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors2008-02-27027 February 2008 Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Request L-2008-033, Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors.2008-02-28028 February 2008 Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors. Project stage: Request L-2008-073, NRC Generic Letter 2004-02 Request for an Extension to the Completion Date for Ex-Vessel Downstream Effects Evaluations2008-04-14014 April 2008 NRC Generic Letter 2004-02 Request for an Extension to the Completion Date for Ex-Vessel Downstream Effects Evaluations Project stage: Request ML0812006062008-04-29029 April 2008 Approval of Extension Request for GL 2004-02 Project stage: Other NRC 2008-0038, Supplemental Response to Generic Letter 2004-02, Potential Lmpact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors2008-06-0909 June 2008 Supplemental Response to Generic Letter 2004-02, Potential Lmpact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Request L-2008-137, Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors.2008-06-30030 June 2008 Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors. Project stage: Request L-2008-138, Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors.2008-06-30030 June 2008 Supplemental Response to NRC Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors. Project stage: Request ML0817905382008-07-0101 July 2008 Generic Safety Issue 191/Generic Letter 2004-02, Additional Extension Request Approval Project stage: Other ML0826106902008-09-17017 September 2008 Request for Additional Information Related to GL 2004-02 Project stage: RAI ML0826107052008-09-17017 September 2008 Request for Additional Information (RAI) Related to Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Sump Recirculation at Pressurized-water Reactors Project stage: RAI ML0834400782008-12-19019 December 2008 Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors, Request for Additional Information Project stage: RAI ML0833806712008-12-22022 December 2008 Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors, Request for Additional Information (TAC Mc 4725) Project stage: RAI ML0833001732009-01-0707 January 2009 GSI-191/GL 2004-02 Request for Additional Information Project stage: RAI ML0836589782009-01-16016 January 2009 Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors, Request for Additional Information Project stage: RAI ML0835800232009-01-22022 January 2009 Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors, Request for Additional Information Project stage: RAI L-2009-063, Response to NRC Request for Additional Information Regarding the Responses to GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors2009-03-19019 March 2009 Response to NRC Request for Additional Information Regarding the Responses to GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Response to RAI L-2009-062, Response to NRC Request for Additional Information Regarding the Responses to GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors.2009-03-19019 March 2009 Response to NRC Request for Additional Information Regarding the Responses to GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors. Project stage: Response to RAI NRC 2009-0033, Response to Request for Additional Information GSI-191/GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors2009-04-0707 April 2009 Response to Request for Additional Information GSI-191/GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors Project stage: Response to RAI ML0909805152009-04-0808 April 2009 SONGS - GSI-191 Chemical Effects Project stage: Other L-2009-084, Response to Nrc'S Request for Additional Information2009-04-22022 April 2009 Response to Nrc'S Request for Additional Information Project stage: Request NRC 2009-0053, Request for Extension of Unit 1 and 2 Completion Dates for Generic Letter 2004-02, Potential Impact for Debris Blockage in Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors (TAC MC4705/4706)2009-06-12012 June 2009 Request for Extension of Unit 1 and 2 Completion Dates for Generic Letter 2004-02, Potential Impact for Debris Blockage in Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors (TAC MC4705/4706) Project stage: Request NRC 2009-0059, Response to Request for Additional Information GSI-I91/GL 2004-02 Potential Lmpact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors2009-06-29029 June 2009 Response to Request for Additional Information GSI-I91/GL 2004-02 Potential Lmpact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors Project stage: Response to RAI ML0920802162009-07-27027 July 2009 Notice of Forthcoming Conference Call with Florida Power and Light Concerning Turkey Point Generic Letter 2004-02 Response Project stage: Other L-2009-180, Responses to Nrc'S Request for Additional Information on Generic Letter 2004-02 Supplemental Responses, Dated 02/27/2008 and 06/30/20082009-07-30030 July 2009 Responses to Nrc'S Request for Additional Information on Generic Letter 2004-02 Supplemental Responses, Dated 02/27/2008 and 06/30/2008 Project stage: Supplement NRC 2009-0077, Response to Request for Additional Information GSI-191/GL 2004-02 (TACs MC4705/4706) Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors2009-07-31031 July 2009 Response to Request for Additional Information GSI-191/GL 2004-02 (TACs MC4705/4706) Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized Water Reactors Project stage: Response to RAI ML0924404792009-09-11011 September 2009 Summary of Conference Call with Florida Power & Light, to Discuss Generic Letter 2004-02, Potential Impact of Debris Blackage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactor, Responses Project stage: Other NRC 2009-0113, Generic Letter 2004-02, Potential Impact for Debris Blockage in Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors (TAC Nos. MC4705/4706)2009-10-27027 October 2009 Generic Letter 2004-02, Potential Impact for Debris Blockage in Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors (TAC Nos. MC4705/4706) Project stage: Other ML1001900112010-01-19019 January 2010 Notice of Conference Call with Florida Power & Light Concerning Turkey Point Generic Letter 2004-02 Response Project stage: Other ML1003512132010-02-18018 February 2010 Request for Additional Information Regarding GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: RAI ML1009700022010-04-0909 April 2010 Request for Additional Information, Regarding GL 2004-02 Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: RAI NRC 2010-0046, Supplemental Response for Extension Request for Completion of Actions for Generic Letter 2004-02 Potential Impact for Debris Blockage in Emergency Recirculation Durian Design Basis Accidents at Pressurized-Water Reactors2010-06-11011 June 2010 Supplemental Response for Extension Request for Completion of Actions for Generic Letter 2004-02 Potential Impact for Debris Blockage in Emergency Recirculation Durian Design Basis Accidents at Pressurized-Water Reactors Project stage: Supplement ML1019405202010-07-14014 July 2010 Notice of Conference Call with Florida Power and Light Company to Discuss Draft Responses to NRC Requests for Additional Information for Generic Letter 2004-02 Project stage: Draft RAI ML1007407182010-07-28028 July 2010 February 3, 2010, Turkey Point, Unit 3 & 4, Summary of Meeting with Florida Power & Light, on Generic Letter 2004-02 Project stage: Meeting L-2010-205, Responses to Nrc'S Request for Additional Information Dated Feb. 18, 2010 Re Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors2010-09-17017 September 2010 Responses to Nrc'S Request for Additional Information Dated Feb. 18, 2010 Re Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Request ML1009903062010-09-22022 September 2010 Request for Additional Information Regarding GL 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: RAI ML1025902742010-12-17017 December 2010 Summary of Teleconference Meeting with Florida Power & Light Company, on Generic Letter 2004-02 Project stage: Meeting NRC 2011-0010, Plan for Completion of Actions for Generic Letter 2004-02 Potential Impact for Debris Blockage in Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors2011-02-0404 February 2011 Plan for Completion of Actions for Generic Letter 2004-02 Potential Impact for Debris Blockage in Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors Project stage: Other ML1103502052011-02-0404 February 2011 Forthcoming Public Teleconference with NextEra Energy Seabrook, LLC, to Discuss Planned Testing for Seabrook Specific Erosion Project stage: Request 2009-01-07
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Category:Letter type:L
MONTHYEARL-2024-001, Relief Request CISl-03-01 for Relief Concerning Containment Unbonded Post-Tensioning System Inservice Inspection Requirements2024-01-26026 January 2024 Relief Request CISl-03-01 for Relief Concerning Containment Unbonded Post-Tensioning System Inservice Inspection Requirements L-2024-010, Point Units 3 and 4, Seabrook, Duane Arnold, and Point Beach Units 1 and 2, Nuclear Property Insurance - 10 CFR 50.54(w)(3)2024-01-25025 January 2024 Point Units 3 and 4, Seabrook, Duane Arnold, and Point Beach Units 1 and 2, Nuclear Property Insurance - 10 CFR 50.54(w)(3) L-2024-004, Relief Request (RR) 7, Proposed Alternative in Accordance with 10 CFR 50.55a(z)(1) Extension of Inspection Interval for Reactor Pressure Vessel Welds from 10 to 20 Years2024-01-18018 January 2024 Relief Request (RR) 7, Proposed Alternative in Accordance with 10 CFR 50.55a(z)(1) Extension of Inspection Interval for Reactor Pressure Vessel Welds from 10 to 20 Years L-2024-007, Inservice Inspection Program Owner'S Activity Report (OAR-1)2024-01-18018 January 2024 Inservice Inspection Program Owner'S Activity Report (OAR-1) L-2024-003, NextEra Energy Seabrook, LLC - 10 CFR 50.46 - Emergency Core Cooling System LBLOCA 30-Day Report2024-01-11011 January 2024 NextEra Energy Seabrook, LLC - 10 CFR 50.46 - Emergency Core Cooling System LBLOCA 30-Day Report L-2024-002, Withdrawal of Proposed Alternative to American Society of Mechanical Engineers (ASME) Operation and Maintenance (OM) Code for the Auxiliary Feedwater (AFW) 2C Pump2024-01-0808 January 2024 Withdrawal of Proposed Alternative to American Society of Mechanical Engineers (ASME) Operation and Maintenance (OM) Code for the Auxiliary Feedwater (AFW) 2C Pump L-2023-173, Quality Assurance Topical Report (FPL-1) Revision 30 Update2023-12-15015 December 2023 Quality Assurance Topical Report (FPL-1) Revision 30 Update L-2023-179, Unusual or Important Environmental Event - Turtle Mortality2023-12-14014 December 2023 Unusual or Important Environmental Event - Turtle Mortality L-2023-180, Submittal of Changes to the Technical Specification Bases2023-12-13013 December 2023 Submittal of Changes to the Technical Specification Bases L-2023-174, Subsequent License Renewal Application - Third Annual Update2023-12-13013 December 2023 Subsequent License Renewal Application - Third Annual Update L-2023-168, License Amendment Request Supplement to Revision 2 for the Technical Specifications Conversion to NUREG-1432 Revision 52023-12-12012 December 2023 License Amendment Request Supplement to Revision 2 for the Technical Specifications Conversion to NUREG-1432 Revision 5 L-2023-166, Turkey Points Units 3 and 4, Correction to the 2022 Annual Radioactive Effluent Release Report2023-12-0606 December 2023 Turkey Points Units 3 and 4, Correction to the 2022 Annual Radioactive Effluent Release Report L-2023-172, Supplement to Exemption Request Regarding Enhanced Weapons. Firearms Background Checks. and Security Event Notifications Final Rule2023-11-29029 November 2023 Supplement to Exemption Request Regarding Enhanced Weapons. Firearms Background Checks. and Security Event Notifications Final Rule L-2023-177, Supplement to Seabrook Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule2023-11-29029 November 2023 Supplement to Seabrook Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule L-2023-176, Supplement to Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule2023-11-29029 November 2023 Supplement to Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule L-2023-155, Supplement to Response to Request for Additional Information, Revised NextEra Common Emergency Plan, and Revised Site-Specific Emergency Plan Annexes Regarding License Amendment Request for Common Emergency Plan Consistent with NUREG-06542023-11-28028 November 2023 Supplement to Response to Request for Additional Information, Revised NextEra Common Emergency Plan, and Revised Site-Specific Emergency Plan Annexes Regarding License Amendment Request for Common Emergency Plan Consistent with NUREG-0654, L-2023-162, Response to 50.69 2nd Round of Rals2023-11-21021 November 2023 Response to 50.69 2nd Round of Rals L-2023-160, Part 73 Exemption Request Regarding Enhanced Weapons, Firearms, Background Checks, and Security Event Notifications Final Rule2023-11-16016 November 2023 Part 73 Exemption Request Regarding Enhanced Weapons, Firearms, Background Checks, and Security Event Notifications Final Rule L-2023-159, Part 3 Exemption Request Regarding Enhanced Weapons, Firearms Background Checks and Security Event Notifications Final Rule2023-11-16016 November 2023 Part 3 Exemption Request Regarding Enhanced Weapons, Firearms Background Checks and Security Event Notifications Final Rule L-2023-146, Part 73 Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule2023-11-16016 November 2023 Part 73 Exemption Request Regarding Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule L-2023-078, License Amendment Request 278, Incorporate Advanced Fuel Products, Extend Surveillance Intervals and 10 CFR 50.46 Exemption Request to Facilitate Transition to 24-Month Fuel Cycles2023-11-15015 November 2023 License Amendment Request 278, Incorporate Advanced Fuel Products, Extend Surveillance Intervals and 10 CFR 50.46 Exemption Request to Facilitate Transition to 24-Month Fuel Cycles L-2023-077, License Amendment Request 277 Updated Spent Fuel Pool Criticality Analysis2023-10-11011 October 2023 License Amendment Request 277 Updated Spent Fuel Pool Criticality Analysis L-2023-131, Subsequent License Renewal Application - Second Annual Update2023-09-28028 September 2023 Subsequent License Renewal Application - Second Annual Update L-2023-136, Supplement to License Amendment Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors2023-09-26026 September 2023 Supplement to License Amendment Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors L-2023-122, Corrections to the 2022 Annual Radiological Environmental Operating Report2023-09-20020 September 2023 Corrections to the 2022 Annual Radiological Environmental Operating Report L-2023-128, License Amendment Request to Revise TS 5.5.17, Pre-Stressed Concrete Containment Tendon Surveillance Program2023-09-19019 September 2023 License Amendment Request to Revise TS 5.5.17, Pre-Stressed Concrete Containment Tendon Surveillance Program L-2023-127, Correction to the 2022 Annual Radioactive Effluent Release Report2023-09-18018 September 2023 Correction to the 2022 Annual Radioactive Effluent Release Report L-2023-113, Correction to the 2020 Annual Radiological Environmental Operating Report2023-09-14014 September 2023 Correction to the 2020 Annual Radiological Environmental Operating Report L-2023-108, Report of 10 CFR 50.59 Plant Changes2023-09-11011 September 2023 Report of 10 CFR 50.59 Plant Changes L-2023-118, Response to Request for Additional Information Regarding License Amendment Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors2023-09-11011 September 2023 Response to Request for Additional Information Regarding License Amendment Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors L-2023-107, Technical Specification Bases Control Program Periodic Report of Bases Changes TS 6.8.4.j.42023-09-0606 September 2023 Technical Specification Bases Control Program Periodic Report of Bases Changes TS 6.8.4.j.4 L-2023-112, Corrections to the 2021 Annual Radioactive Effluent Release Report2023-09-0606 September 2023 Corrections to the 2021 Annual Radioactive Effluent Release Report L-2023-110, Response to Requests for Additional Information Regarding License Amendment Request No. 276, Revise Fire Protection Program in Support of Reactor Coolant Pump Seal Replacement Project2023-08-25025 August 2023 Response to Requests for Additional Information Regarding License Amendment Request No. 276, Revise Fire Protection Program in Support of Reactor Coolant Pump Seal Replacement Project L-2023-115, Inservice Inspection Program Owner'S Activity Report (OAR-1)2023-08-21021 August 2023 Inservice Inspection Program Owner'S Activity Report (OAR-1) L-2023-114, Proposed Turkey Point Units 6 and 7; Seabrook Station; Point Beach Units 1 and 2 - Official Service List Update2023-08-17017 August 2023 Proposed Turkey Point Units 6 and 7; Seabrook Station; Point Beach Units 1 and 2 - Official Service List Update L-2023-098, and Point Beach Units 1 and 2 - Response to Request for Additional Information Regarding License Amendment Request for Common Emergency Plan Consistent with NUREG-0654, Revision 22023-08-0707 August 2023 and Point Beach Units 1 and 2 - Response to Request for Additional Information Regarding License Amendment Request for Common Emergency Plan Consistent with NUREG-0654, Revision 2 L-2023-104, Preparation and Scheduling of Operator Licensing Examinations2023-08-0303 August 2023 Preparation and Scheduling of Operator Licensing Examinations L-2023-103, Inservice Inspection Examination Report2023-08-0303 August 2023 Inservice Inspection Examination Report L-2023-105, Preparation and Scheduling of Operator Licensing Examinations2023-08-0303 August 2023 Preparation and Scheduling of Operator Licensing Examinations L-2023-094, Response to Requests for Additional Information Regarding License Amendment Request No. 276, Revise Fire Protection Program in Support of Reactor Coolant Pump Seal Replacement Project2023-07-27027 July 2023 Response to Requests for Additional Information Regarding License Amendment Request No. 276, Revise Fire Protection Program in Support of Reactor Coolant Pump Seal Replacement Project L-2023-099, Pump Relief Request 10 (PR-10), One-Time Request for an Alternative to the American Society of Mechanical Engineers (ASME) Operation and Maintenance (OM) Code for the Auxiliary Feedwater (AFW) 2C Pump2023-07-26026 July 2023 Pump Relief Request 10 (PR-10), One-Time Request for an Alternative to the American Society of Mechanical Engineers (ASME) Operation and Maintenance (OM) Code for the Auxiliary Feedwater (AFW) 2C Pump L-2023-102, Relief Request PSL2-15-RR-01, Proposed Alternative to ASME Section XI Code Examination Requirements for Reactor Vessel Bottom Area and Piping in Covered Trenches2023-07-26026 July 2023 Relief Request PSL2-15-RR-01, Proposed Alternative to ASME Section XI Code Examination Requirements for Reactor Vessel Bottom Area and Piping in Covered Trenches L-2023-089, Refueling Outage Owner'S Activity Report (OAR-1) Unit 2 for Inservice Inspections2023-07-24024 July 2023 Refueling Outage Owner'S Activity Report (OAR-1) Unit 2 for Inservice Inspections L-2023-097, Subsequent License Renewal Application Revision 1 - Supplement 62023-07-13013 July 2023 Subsequent License Renewal Application Revision 1 - Supplement 6 L-2023-076, In-Service Inspection Program Owner'S Activity Report (OAR-1)2023-07-11011 July 2023 In-Service Inspection Program Owner'S Activity Report (OAR-1) L-2023-087, Florida Power & Light/Nextera Energy, Results of the Safety Culture Program Effectiveness Review, March 20, 2023 (ADAMS Accession No. ML22340A452)2023-06-29029 June 2023 Florida Power & Light/Nextera Energy, Results of the Safety Culture Program Effectiveness Review, March 20, 2023 (ADAMS Accession No. ML22340A452) L-2023-086, Request Temporary Suspension of Turkey Point License Amendment Request 274, Reactor Protection System, Engineered Safety Features Actuation System, and Nuclear Instrumentation.2023-06-28028 June 2023 Request Temporary Suspension of Turkey Point License Amendment Request 274, Reactor Protection System, Engineered Safety Features Actuation System, and Nuclear Instrumentation. L-2023-088, 10 CFR 50.55a Requests, Relief Requests I6-RR-1, I6-RR-2, and I6-RR-3 Sixth Ten-Year Inservice Inspection Program Interval2023-06-27027 June 2023 10 CFR 50.55a Requests, Relief Requests I6-RR-1, I6-RR-2, and I6-RR-3 Sixth Ten-Year Inservice Inspection Program Interval L-2023-082, Subsequent License Renewal Application Revision 1, Supplement 52023-06-14014 June 2023 Subsequent License Renewal Application Revision 1, Supplement 5 L-2023-075, Response to Request for Additional Information (RAI) Regarding Exemption Request, License Amendment Request and Revised Response in Support of a Risk-Informed Resolution of Generic Letter 2004-022023-06-0909 June 2023 Response to Request for Additional Information (RAI) Regarding Exemption Request, License Amendment Request and Revised Response in Support of a Risk-Informed Resolution of Generic Letter 2004-02 2024-01-08
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NExTera M T
ENERGY Q March 3, 2012 L-2012-098 U.S. Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, D.C. 20555-0001 NextEra Energy Seabrook, LLC Seabrook Station, Docket No. 50-443 NextEra Energy Point Beach, LLC Point Beach Nuclear Plant, Units 1 and 2, Docket Nos. 50-266 and 50-301 Florida Power & Light Company St. Lucie Units 1 and 2, Docket Nos. 50-335 and 50-389 Turkey Point Units 3 and 4, Docket Nos. 50-250 and 50-251 RE: Request for NRC Staff Review of Draft Proposed Guideline for Strainer Fiber Bypass Test Protocol Florida Power & Light Company ("FPL"), on behalf of itself and NextEra Energy Resources, LLC
("NextEra"), submit the attached "Strainer Fiber Bypass Test Protocol" (the "Protocol") for NRC Staff's review. The Protocol provides a consistent and uniform set of considerations for the performance of strainer bypass testing, that would later be incorporated into a vendor specific strainer test plan. This later testing would determine a maximum mass quantity of fibrous debris bypass that will bound any set of conditions specific to a plant. Finally, the output from strainer bypass testing would be used to perform downstream effects analysis, both ex-vessel and in-vessel as part of demonstrating compliance with GSI-191 requirements.
The protocol was developed to provide a consistent method for testing ECCS recirculation strainer fiber bypass for use by FPL and NextEra. Once the protocol is agreed to by NRC, a strainer fiber bypass test plan, developed in accordance with the protocol, will be transmitted to NRC for review and concurrence prior to use in strainer fiber bypass testing.
FPL and NextEra anticipate the need for completion of NRC review of the protocol by April 2012 to support inclusion in requests for vendor proposals to develop a test plan and conduct strainer bypass testing.
Please contact William A Cross, Fleet Nuclear Licensing Manager, at 561-691-2970 if there are any questions.
Sincerely yours, Larry E Nicholson Director of Licensing - ooz NextEra Energy, Inc.
700 Universe Boulevard, Juno Beach, FL 33408
Attachment cc: Jack R. Davis, NRR/DSS Stewart N. Bailey, NRR/DSS/SSlB Stephen J. Smith, NRR/DSS/SSlB Jason C. Paige, NRR/DORL/LPL2-2
Strainer Fiber Bypass Test Protocol Proposed Guideline, Draft Rev 0 March 2012
Proposed Guideline, Draft Rev 0 Strainer Fiber Bypass Test Protocol Page i Table of Contents SECTION PAGE
- 1. SCO PE ......................................................................................................... 1
- 2. PURPO SE ............................................................................................................ 1
- 3. DEFINITIO NS ....................................................................................................... 1
- 4. G ENERA L REQ UIREM ENTS .......................................................................... 1
- 5. RESPO NSIBILITIES ......................................................................................... 3
- 6. PRO CESS ........................................................................................................ 3 6 .1 S a fe ty .................................................................................................................... 3 6.2 Test Loop Setup ................................................................................................ 3 6.3 Test Loop O peration - Pre-Test ...................................................................... 4 6.4 Test Loop O peration - Bypass Test - Fiber O nly ............................................. 4 6.5 Sensitivity Testing ........................................................................................... 7 6.6 Photographs of Bypass Testing ....................................................................... 8 6.7 Records ................................................................................................................. 8
- 7. REFERENCES ................................................................................................. 8 APPENDICES Appendix A Safe Handling of Debris Source Materials .............................................. 9
Proposed Guideline, Draft Rev 0 Strainer Fiber Bypass Test Protocol Page 1
- 1. SCOPE This document provides the minimum considerations necessary for performance of strainer bypass testing using either flume testing or tank testing. This document also provides the steps for either fiber only bypass testing or fiber and particulate (homogeneous) bypass testing, including the methodology for determining the appropriate quantities of particulate to be included in a homogeneous test approach. The steps provided in this guideline are intended to be incorporated into a vendor's strainer bypass test protocol, procedure, or test plan. For the purposes of this document, the detailed strainer bypass test document will be referred to as the test plan, and a flume test arrangement or tank test arrangement will be referred to as the test loop. Additional detail will be included in the vendor's test plan to address vendor specific test configuration, quality requirements, contractual requirements, etc.
It is expected that vendor test plans will include the applicable considerations from this guideline. Methods other than those contained in this guideline should be identified in the test plan and sufficient basis provided for the acceptability of the specified approach.
- 2. PURPOSE The purpose of this document is to provide a consistent and uniform set of considerations for performance of strainer bypass testing that will be incorporated into a vendor specific strainer test plan. This testing will determine a maximum mass quantity of fibrous debris bypass that will bound any set of conditions specific to a plant. The output from strainer bypass testing is intended to be used for downstream effects analysis, both ex-vessel and in-vessel.
- 3. DEFINITIONS 3.1 Test Plan - The document developed by the vendor that will be performing the strainer bypass testing that provides the specific details of the testing process including those elements from this document that are determined to be applicable. The document may be referred to as the test protocol, procedure, or test plan.
3.2 Test Loop - The tank, pool, or flume in which the bypass testing will be performed. The test loop will normally include the test strainer, pump(s), metrology, debris capture devices and will have the capability for continuous recirculation of the water.
3.3 Debris Capture Device - Device installed downstream of the strainer to capture bypassed debris, containing removable filter media. This can also be used to clean up the loop prior to a test.
- 4. GENERAL REQUIREMENTS
- 1) A test plan shall be developed that includes the applicable methodology and considerations from this document for the applicable testing methodology chosen.
This test plan shall be reviewed by the NRC prior to implementation to provide greater assurance that the results will be accepted by the NRC.
- 2) The test plan shall determine the appropriate scaling factor for the testing to be performed based on consideration of test strainer size and test loop flow rate capability.
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- 3) The test plan shall determine the test loop turnover time and the containment sump pool turnover time.
- 4) The test plan shall define and provide justification (or reference the justification document) for the worst case operating scenario(s) for strainer bypass, which can be different than that defined for a head loss test. The intent of this step is to ensure that the specific set of plant conditions that could exist that would result in the greatest quantity of fiber bypass be identified. An example of an operating scenario to be considered include:
If more than one sump can operate during recirculation (split sump trains),
then the total surface area of both sump's strainers and the total sump flow rate should be tested.
- 5) The test plan should determine, through analysis or sensitivity testing, whether inclusion of the sacrificial strainer area in the determination of available strainer area for bypass testing should be included. There are competing effects associated with this consideration, face velocity at the strainer and face area of the strainer. For those plants that had a relatively small fraction of the total strainer area set aside for sacrificial strainer area, there should be little difference between the effects for which the slightly increased face velocity should be used.
- 6) Testing should be performed at a temperature of 80°F to 140 0 F. The test plan shall specify the required temperature and the allowable deviation from the target temperature.
- 7) The test plan shall include the quantities and types of material to be included in the testing.
- 8) The fiber required for the testing shall be prepared in accordance with "ZOI Fibrous Debris Preparation: Processing, Storage and Handling" or the vendor document that incorporates the information from that document.
- 9) The test plan shall provide the steps necessary for introducing the prepared debris into the test loop while minimizing significant agglomeration of the debris.
- 10) The test plan should also provide for post-test fiber length measurement which could be used as an input for downstream effects evaluations and fuel blockage testing.
- 11) If used, particulate debris shall be prepared in accordance with the test plan utilizing acceptable materials and sizes as previously reviewed and accepted by the NRC or as specified within NEI 04-07 and its associated SER.
- 12) All weight measurements shall be performed using calibrated scales with sufficient accuracy for the intended purpose.
- 13) The weighed debris must be stored and clearly labelled with weight, type, and date. This is done to prevent the possibility of incorrectly identifying the material at the time of its use or following the completion of testing. Documentation of the weighed debris shall be per the requirements of the test plan.
- 14) All filter media utilized during performance of the test plan shall be carefully controlled and handled to ensure the results obtained are an accurate reflection of
Proposed Guideline, Draft Rev 0 Strainer Fiber Bypass Test Protocol Page 3 the captured debris and test conditions. These controls should be specified in the applicable sections of the test plan.
- 15) The debris must be handled in a safe manner to ensure minimal hazard to personnel. Each relevant material safety data sheet (MSDS) must be read before handling debris and each worker must wear appropriate personal protective equipment (PPE).
- 16) The test plan should contain the data sheets necessary to fully document the relevant information associated with the testing.
- 5. RESPONSIBILITIES The Scope of Work will be performed in accordance with the test plan developed for the specified testing.
- 6. PROCESS This section identifies the generic requirements for the performance of strainer bypass testing that should be included in a vendor test plan, as applicable for the type of testing to be performed, e.g., flume test with fiber only, tank test with fiber and particulate, etc.
6.1 Safety Due to their potential negative effect on health, the materials identified for use may require appropriate safety precautions when handling. These requirements shall be detailed in the vendor test plan to ensure operator safety.
6.2 Test Loop Setup The test loop shall be established per the test plan and will include consideration of the following, as applicable:
- 1) Strainer type
- 2) Strainer arrangement
- 3) Flow rate
- 4) Flume design for establishing the correct approach velocity and turbulence.
- 5) An appropriate method for introduction of debris into the test loop that does not disrupt the debris bed developing on the strainer.
- 6) Bypassed debris capture including the capability to swap debris capture devices during testing without disruption to the debris bed developing on the strainer.
. These capture devices can be filters or screens and should have the capability of filtering out debris greater in size than approximately 50 microns (0.006 in). This size is comparable to that used in the Los Alamos screen penetration test, as documented in Reference 7.2.
- 7) A method for obtaining grab samples of the circulating fluid downstream of the strainer if short term incremental changes in bypassed debris are considered to be necessary for the testing.
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- 8) A method for partitioning the flow to the debris capture devices and the bulk recirculation pool of water for those tests that include consideration of debris quantities at the strainer and flow rates through the strainer that result from containment spray flow in addition to ECCS flow.
Test loop configuration shall include the capability to monitor the flow rate in the portion of the loop that includes the debris capture device and a method for adjusting the flow rate in that section of the loop to ensure the equivalent ECCS flow rate is maintained through the filter media of the debris capture device.
- 9) Use of qualified instrumentation for differential pressure, flow rate and temperature measurement.
- 10) Use of data acquisition devices for capture and retention of the data generated by the instrumentation.
6.3 Test Loop Operation - Pre-Test The test plan should provide, at a minimum, the following for performance of the pre-test which is the test loop cleanup and equipment checkout portion of the overall bypass test.
- 1) Prior to performing bypass testing, a 1 micron filter should be installed in the test loop with all flow circulating through these filters (if partition flow is being used, that portion of the test loop also needs to be directed to the filter media).
- 2) If not already completed, fill the test loop with tap water.
- 3) Recirculate the test loop for a minimum of 5 pool turnovers, at the maximum calculated test flow rate, to remove all residual debris from the test loop.
- 4) Ensure the data gathering system is functioning properly.
- 5) Upon completion of the pre-test filtering, the test loop should be secured, and the loop clean-up filter media removed.
- 6) Install the filter media to be used for the bypass testing into the debris capture device.
6.4 Test Loop Operation - Bypass Test - Fiber Only The test plan shall provide the specific steps for this testing based on the plant specific configuration, the applicable general requirements specified in this guideline, the vendor's specific requirements, and the following considerations.
- 1) The filter media shall be weighed dry and marked or labelled with a unique identifier.
- 2) The test loop pre-test shall be completed and the test filter media shall be installed.
- 3) If determined to be necessary, the concentration of total fiber fines that could be introduced to the test loop should be determined based on the concentration that would exist in the containment sump pool at the initiation of recirculation. The fines that are to be considered for this determination will be those that are generated as
Proposed Guideline, Draft Rev 0 Strainer Fiber Bypass Test Protocol Page 5 a result of the break and those from the latent fibers that are in the active sump volume.
- 4) The total quantity of fines that are calculated to erode should be added to the fines quantity determined in the previous step, as a function of concentration in the pool.
These erosion fines should be added commensurate with the time period during which the erosion occurs, considering the compressed timeline for this testing.
- 5) The test loop shall be placed in service with the filter media in-line. Clean strainer head loss should be determined during this portion of the sequence.
- 6) If specified by the test plan, a water sample should be collected after clean strainer head loss is determined to provide a baseline debris concentration in the test loop.
This step is only necessary if samples will be collected during the test to establish additional data points for determination of the quantity and rate of debris bypass.
- 7) Debris additions to the test loop shall consider the total quantity of debris, the debris concentration, the thickness of the developed debris bed, the time necessary to introduce the debris to the test loop, the time to swap filter media and replace filters, and the expected time for the debris to transport to the containment sump strainer(s). A sensitivity study may be needed to determine the detailed debris addition method, including debris amount for each addition and total debris amount.
" If the containment sump pool debris concentration method is being used for testing, this concentration should be established in the test loop prior to initiation of flow. This may require a method of agitation to maintain the readily suspendable fibers available for transport to the strainer prior to initiation of test loop flow. If this method is chosen for testing, supporting basis for the concentration determined shall either be contained in the test plan or a supporting document.
" For non-concentration (batch thickness on strainer) based testing, the table below provides a suggested sequence assuming that the first 8 additions result in less than or equal to an equivalent 1/16 inch debris bed addition to the strainer per batch addition (total of 1/2 inch thickness on strainer).
- If the debris quantity per batch addition results in a calculated bed thickness greater than 1/16 inch, and the debris concentration method is not being used (see Step 3 above), the debris quantity should be reduced by a sufficient quantity to ensure less than 1/16 equivalent bed thickness on the strainer per batch addition. If the total debris addition results in a calculated bed thickness of less than approximately 1/8 inch, then the debris addition should be completed in a minimum of 4 batch additions.
" Following final debris addition, the test loop should be allowed to run for an additional time that depends on plant specific requirements, e.g., at least as long as the hot leg switchover time for the plant, or longer, depending on the plant operating conditions.
Proposed Guideline, Draft Rev 0 Strainer Fiber Bypass Test Protocol Page 6 Table 6-1 Test Sequence Batch Size Cumulative Addition Interval Filter Change Step (% of total) M Interval / Sample Collection
>5 min. after stable flow Within 2 minutes prior to in test loop next debris addition 2 6.25 12.5 Greater of 10 min. or 5 Within 2 minutes prior to test loop pool turnovers next debris addition Greater of 10 min. or 5 Within 2 minutes prior to test loop pool turnovers next debris addition Greater of 10 min. or 5 Within 2 minutes prior to 4test loop pool turnovers next debris addition 5 6.25 31.25 Greater of 10 min. or 5 Within 2 minutes prior to test loop pool turnovers next debris addition Greater of 10 min. or 5 Within 2 minutes prior to test loop pool turnovers next debris addition 7 6.54.5 test loop of Greater pool min. or 5 10 turnovers next 2debris Within minutes prior to addition 8 6Greater of 10 min. or test loop pool turnovers5 Within 2 minutes prior to next debris addition Greater of 10 min. or 5 Within 2 minutes prior to 91.5 2.5 test loop pool turnovers next debris addition 10 12.5 75 Greater of 10 mi. or 5 Within 2 minutes prior to test loop pool turnovers next debris addition Greater loop of 10 turnovers min. or 5 Within test pool next 2debris minutes prior to addition Greater of 10 min. or 5 Within 2 minutes prior to 1 1 test loop pool turnovers next debris addition Following final debris addition, the test loop should Following the final filter be allowed to run for an additional 4 to 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> swap, subsequent filter (based on hot leg switchover time for the plant), swperfhormed bevey3 13 based on the thickness of the debris bed formed nesforted nexeto2 and the continued capture of debris in the filter uirst, then houry rnd media, with consideration of the head loss 1u mntest comind ati th frth.ex of tho developed across the strainer. unts et.tion
Proposed Guideline, Draft Rev 0 Strainer Fiber Bypass Test Protocol Page 7 If the testing is to be performed in a tank type test loop, some settling of debris may occur. If agitation is used to force the settled debris onto the strainer, the agitation shall not be used to develop a uniform debris bed across the strainer. Care should also be taken to not disrupt the developing debris bed which could result in a greater quantity of fiber bypass.
- 8) Following completion of the minimum attributes above, tests shall not be terminated if the head loss has not yet stabilized (i.e. no head loss increase greater than 1% for two consecutive 30 minute intervals) or, if below the measurement threshold, then termination would be based solely on test time and minimal increase in captured debris downstream of the strainer. This criterion is especially important for those tests where partitioning was employed to represent that portion of the test pool that will continually recirculate without passing through the filter media.
- 9) The filter media, with debris collected during the test shall be dried and weighed for determination of the debris captured during the test.
- 10) The total quantity of debris captured compared to the total quantity of debris added to the test loop can be used to establish a strainer percentage bypass, if necessary and appropriate.
- 11) If necessary to support other testing or analysis, the dried debris can be processed by manual separation to establish lengths of fiber that would be expected for downstream effects analysis and testing.
- 12) If liquid samples were collected in addition to the debris collected on the filter media, the samples shall be filtered through a porous filter (appropriately sized to ensure accurate weight measurement), dried, then weighed. Note that if the liquid samples are to be shipped, they are not to be filtered or dried until they reach the lab where the analysis will be performed. Processing of the fibers for fiber size determination may also be necessary as previously discussed. Consideration should also be given to whether the total weight of these fibers should be added to weight of the fibers collected on the filter media. This will be dependent on whether partitioning was used for the testing.
- 13) Debris collected during this testing may be retained for use in future testing such as site specific fuel assembly testing.
6.5 Sensitivity Testing
- 1) If the intent is to credit mitigative measures for high strainer head loss that results in disruption of the developed debris bed on the strainer, sensitivity bypass tests will need to be performed to account for the potential additional fibrous debris that could bypass the strainer as a result of this disruption. The types of mitigative measures that could cause a disruption include strainer backwash or cessation of flow through the strainer.
- 2) Sensitivity testing may be required to demonstrate that inclusion or exclusion of sacrificial strainer area will not significantly impact the overall test results.
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- 3) Sensitivity testing may be required for plants that have quickly developing and thicker fiber beds (on the strainer) to demonstrate that smaller breaks will not result in a greater quantity of fibrous debris bypassing the strainer.
6.6 Photographs of Bypass Testing Photographs of the various steps of the bypass testing may be taken as additional confirmation that the testing did meet the test plan requirements.
6.7 Records The test plan shall specify the methods to be used for documenting all aspects of the bypass testing.
- 7. REFERENCES
- 1) Revised Guidance for Review of Final Licensee Responses to Generic Letter 2004-02, "Potential Impact of Debris Blockage On Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors", March 28, 2008 (ML080230234)
- 2) LA-UR-04-5416, "Screen Penetration Test Report", November 2004 (ML051020162)
- 3) EPRI 1011753, "Design Basis Accident Testing of Pressurized Water Reactor Unqualified Original Equipment Manufacturer Coatings", September, 2005 (ML071130069)
- 4) ZOI Fibrous Debris Preparation: Processing, Storage and Handling, Draft
Proposed Guideline, Draft Rev 0 Strainer Fiber Bypass Test Protocol Page 9 Appendix A Safe Handling of Debris Source Materials Fibrous and other debris source materials can cause irritation due to contact (see MSDS before handling). In addition, some of the debris sources utilized can be inhaled or ingested which represents a personnel risk unless necessary precautions are taken. Personnel handling this material should wear appropriate PPE, including an appropriate air filtration mask, safety glasses, gloves and long-sleeved clothing to prevent skin irritation. If necessary, a shower should be taken after handling to remove fibers or other debris source materials.
Care should be taken during processing and handling to minimize airborne debris source materials.