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| {{#Wiki_filter:M ichael P. Gallagher Vice President. | | {{#Wiki_filter:Michael P. Gallagher Vice President. License Renewal Exelon Generation Exelon Nuclear 200 Exelon Way Kennett Square. PA 19348 610 765 5958 Office 610 765 5956 Fax www.exeloncorp.com michaelp.gallagher@exeloncorp.com 10 CFR 50 10 CFR 51 10 CFR 54 RS-14-135 May 5, 2014 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Braidwood Station, Units 1 and 2 Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN 50-456 and STN 50-457 Byron Station, Units 1 and 2 Facility Operating License Nos. NPF-37 and NPF-66 NRC Docket Nos. STN 50-454 and STN 50-455 |
| License Renewal Exelon Generation Exelon Nuclear 200 Exelon Way RS-14-135 May 5, 2014 Kennett Square. PA 19348 610 765 5958 Office 610 765 5956 Fax www.exeloncorp.com michaelp.gallagher@exeloncorp.com 10 CFR 50 10 CFR 51 10 CFR 54 U.S. Nuclear Regulatory Commission Attention: | |
| Document Control Desk Washington, DC 20555-0001 | |
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| ==Subject:== | | ==Subject:== |
| | 10 CFR 54.21(b) Annual Amendment to the Braidwood Station, Units 1 and 2, and Byron Station, Units 1 and 2, License Renewal Application |
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| ==Reference:== | | ==Reference:== |
| | Letter from Michael P. Gallagher, Exelon Generation Company LLC (Exelon) to NRC Document Control Desk, dated May 29, 2013, "Application for Renewed Operating Licenses." |
| | In the Reference letter, Exelon Generation Company, LLC (Exelon) submitted the License Renewal Application (LRA) for the Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 (BBS). As required by 10 CFR 54.21(b), a review has been performed to identify any current licensing basis (CLB) changes made since submittal of the LRA which have a material effect on the content of the LRA, including the FSAR Supplement. This amendment identified a change to the current licensing basis (CLB) that materially affects the contents of the BBS LRA. |
| | Enclosure A contains a description of this LRA change. Enclosure B contains an update to the LRA associated with this change. |
| | There are no new or revised regulatory commitments contained in this letter. |
| | If you have any questions, please contact Mr. AI Fulvio, Manager, Exelon License Renewal, at 610-765-5936. |
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| Braidwood Station, Units 1 and 2 Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN 50-456 and STN 50-457 Byron Station, Units 1 and 2 Facility Operating License Nos. NPF-37 and NPF-66 NRC Docket Nos. STN 50-454 and STN 50-455 10 CFR 54.21(b) Annual Amendment to the Braidwood Station, Units 1 and 2, and Byron Station, Units 1 and 2, License Renewal Application Letter from Michael P. Gallagher, Exelon Generation Company LLC (Exelon) to NRC Document Control Desk, dated May 29, 2013, "Application for Renewed Operating Licenses." In the Reference letter, Exelon Generation Company, LLC (Exelon) submitted the License Renewal Application (LRA) for the Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 (BBS). As required by 10 CFR 54.21(b), a review has been performed to identify any current licensing basis (CLB) changes made since submittal of the LRA which have a material effect on the content of the LRA, including the FSAR Supplement.
| | May 5, 2014 U.S. Nuclear Regulatory Commission Page 2 I declare under penalty of perjury that the foregoing is true and correct. |
| This amendment identified a change to the current licensing basis (CLB) that materially affects the contents of the BBS LRA. Enclosure A contains a description of this LRA change. Enclosure B contains an update to the LRA associated with this change. There are no new or revised regulatory commitments contained in this letter. If you have any questions, please contact Mr. AI Fulvio, Manager, Exelon License Renewal, at 610-765-5936.
| | Executed on 5-5""' 20/4 Respectfully, |
| May 5, 2014 U.S. Nuclear Regulatory Commission Page 2 I declare under penalty of perjury that the foregoing is true and correct. Executed on 5-5""' 20/4 Respectfully, | |
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| ==Enclosures:== | | ==Enclosures:== |
| | A. Description of LRA Update Associated with RWST Heaters B. LRA Updates Associated with RWST Heaters cc: Regional Administrator- NRC Region Ill NRC Project Manager (Safety Review), NRR-DLR NRC Project Manager (Environmental Review), NRR-DLR NRC Senior Resident Inspector, Braidwood Station NRC Senior Resident Inspector, Byron Station NRC Project Manager, NRR-DORL-Braidwood and Byron Stations Illinois Emergency Management Agency - Division of Nuclear Safety |
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| A. Description of LRA Update Associated with RWST Heaters B. LRA Updates Associated with RWST Heaters cc: Regional Administrator-NRC Region Ill NRC Project Manager (Safety Review), NRR-DLR NRC Project Manager (Environmental Review), NRR-DLR NRC Senior Resident Inspector, Braidwood Station NRC Senior Resident Inspector, Byron Station NRC Project Manager, NRR-DORL-Braidwood and Byron Stations Illinois Emergency Management Agency -Division of Nuclear Safety RS-14-135 Enclosure A Page 1 of 1 Enclosure A Description of LRA Update Associated with RWST Heaters Prior to submittal of the Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 License Renewal Application (LRA), Exelon had replaced the Byron Units 1 and 2 Refueling Water Storage Tank (RWST) electric heaters. The material was changed from a carbon steel shell to a stainless steel shell. At the time of LRA submittal, the Braidwood Units 1 and 2 still had the original RWST electric heaters with carbon steel shells and stainless steel flanges.
| | RS-14-135 Enclosure A Page 1 of 1 Enclosure A Description of LRA Update Associated with RWST Heaters Prior to submittal of the Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 License Renewal Application (LRA), Exelon had replaced the Byron Units 1 and 2 Refueling Water Storage Tank (RWST) electric heaters. The material was changed from a carbon steel shell to a stainless steel shell. At the time of LRA submittal, the Braidwood Units 1 and 2 still had the original RWST electric heaters with carbon steel shells and stainless steel flanges. |
| These material differences were appropriately identified in the LRA Safety Injection System aging management review line items. In June 2013 and November 2013, the carbon steel shells on Braidwood Units 1 and 2, respectively, were physically modified to stainless steel, such that the Braidwood heaters are now all stainless steel similar to the Byron electric heaters. Therefore, with this submittal, the aging management review line items for the carbon steel material on the RWST electric heaters are deleted from the Safety Injection System aging management review line items, as shown in Enclosure B. The stainless steel electric heaters aging management review line items in the LRA on page 3.2-49 are now applicable to the complete Braidwood heater assembly. Therefore, no additional aging management review line | | These material differences were appropriately identified in the LRA Safety Injection System aging management review line items. In June 2013 and November 2013, the carbon steel shells on Braidwood Units 1 and 2, respectively, were physically modified to stainless steel, such that the Braidwood heaters are now all stainless steel similar to the Byron electric heaters. |
| | Therefore, with this submittal, the aging management review line items for the carbon steel material on the RWST electric heaters are deleted from the Safety Injection System aging management review line items, as shown in Enclosure B. The stainless steel electric heaters aging management review line items in the LRA on page 3.2-49 are now applicable to the complete Braidwood heater assembly. Therefore, no additional aging management review line items are necessary. |
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| items are necessary.
| | RS-14-135 Enclosure B Page 1 of 1 Enclosure B LRA Updates Associated with RWST Heaters As a result of the LRA update associated with the Braidwood RWST heater replacement described in Enclosure A of this letter, LRA Table 3.2.2-4 on page 3.2-48 is revised as shown below. Deletions are shown with strikethroughs. |
| | | Table 3.2.2-4 Safety Injection System Component Intended Function Material Environment Aging Effect Requiring Aging Management NUREG-1801 Item Table 1 Item Notes Type Management Programs Accumulator Pressure Boundary Carbon or Low Air with Borated Water Loss of Material Boric Acid Corrosion V.D1.E-28 3.2.1-9 A Alloy Steel with Leakage (External) (B.2.1.4) |
| RS-14-135 Enclosure B Page 1 of 1 Enclosure B LRA Updates Associated with RWST Heaters As a result of the LRA update associated with the Braidwood RWST heater replacement described in Enclosure A of this letter , LRA Table 3.2.2-4 on page 3.2-48 is revised as shown below. Deletions are shown with strikethroughs. Table 3.2.2-4 Safety Injection System Component Type Intended Function Material Environment Aging Effect Requiring Management Aging Management Programs NUREG-1801 ItemTable 1 Item Notes Accumulator Pressure Boundary Carbon or Low Alloy Steel with Stainless Steel Cladding Air with Borated Water Leakage (External) Loss of Material Boric Acid Corrosion (B.2.1.4) V.D1.E-28 3.2.1-9 A External Surfaces Monitoring of Mechanical Components (B.2.1.23) V.E.E-44 3.2.1-40 A Treated Borated Water (Internal) Loss of Material One-Time Inspection (B.2.1.20) V.D1.EP-41 3.2.1-22 A Water Chemistry (B.2.1.2)V.D1.EP-41 3.2.1-22 A Bolting Mechanical Closure Carbon and Low Alloy Steel Bolting Air with Borated Water Leakage (External) Loss of Material Boric Acid Corrosion (B.2.1.4) V.E.E-41 3.2.1-9 A Bolting Integrity (B.2.1.9)V.E.EP-70 3.2.1-13 A Loss of Preload Bolting Integrity (B.2.1.9)V.E.EP-69 3.2.1-15 A Stainless Steel Bolting Air with Borated Water Leakage (External) Loss of Material Bolting Integrity (B.2.1.9)V.E.EP-70 3.2.1-13 A Loss of Preload Bolting Integrity (B.2.1.9)V.E.EP-69 3.2.1-15 A Electric Heaters (Refueling Water Storage Tank) | | Stainless Steel External Surfaces V.E.E-44 3.2.1-40 A Cladding Monitoring of Mechanical Components (B.2.1.23) |
| | | Treated Borated Water Loss of Material One-Time Inspection V.D1.EP-41 3.2.1-22 A (Internal) (B.2.1.20) |
| Leakage Boundary | | Water Chemistry (B.2.1.2) V.D1.EP-41 3.2.1-22 A Bolting Mechanical Closure Carbon and Low Air with Borated Water Loss of Material Boric Acid Corrosion V.E.E-41 3.2.1-9 A Alloy Steel Leakage (External) (B.2.1.4) |
| | | Bolting Bolting Integrity (B.2.1.9) V.E.EP-70 3.2.1-13 A Loss of Preload Bolting Integrity (B.2.1.9) V.E.EP-69 3.2.1-15 A Stainless Steel Air with Borated Water Loss of Material Bolting Integrity (B.2.1.9) V.E.EP-70 3.2.1-13 A Bolting Leakage (External) Loss of Preload Bolting Integrity (B.2.1.9) V.E.EP-69 3.2.1-15 A Electric Leakage Boundary Carbon Steel - Air with Borated Water Loss of Material Boric Acid Corrosion V.D1.E-28 3.2.1-9 A Heaters (Braidwood only) Leakage (External) (B.2.1.4) |
| Carbon Steel | | (Refueling External Surfaces V.E.E-44 3.2.1-40 A Water Storage Monitoring of Mechanical Tank) Components (B.2.1.23) |
| - (Braidwood only) | | Treated Borated Water Loss of Material One-Time Inspection G, 1 (Internal) (B.2.1.20) |
| Air with Borated Water Leakage (External) | | Water Chemistry (B.2.1.2) G, 1}} |
| Loss of Material Boric Acid Corrosion (B.2.1.4) V.D1.E-28 3.2.1-9 A External Surfaces Monitoring of Mechanical Components (B.2.1.23) | |
| V.E.E-44 3.2.1-40 A Treated Borated Water (Internal) | |
| Loss of Material | |
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| One-Time Inspection (B.2.1.20) | |
| G, 1 Water Chemistry (B.2.1.2) G, 1}}
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Category:Letter type:RS
MONTHYEARRS-24-004, Proposed Alternative to the Distribution Requirements of ASME Code Table IWC-2411-1 for the Steam Generators2024-01-11011 January 2024 Proposed Alternative to the Distribution Requirements of ASME Code Table IWC-2411-1 for the Steam Generators RS-23-118, Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information2023-11-10010 November 2023 Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information RS-23-117, Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information2023-11-10010 November 2023 Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information RS-23-114, Proposed Alternative for Examination of Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds2023-11-0101 November 2023 Proposed Alternative for Examination of Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds RS-23-100, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-10-13013 October 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation RS-23-097, Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans2023-10-12012 October 2023 Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans RS-23-108, Proposed Alternative for Examinations of Examination Categories B-B, B-D, and C-A Steam Generator Pressure Retaining Welds and Full Penetration Welded Nozzles2023-10-11011 October 2023 Proposed Alternative for Examinations of Examination Categories B-B, B-D, and C-A Steam Generator Pressure Retaining Welds and Full Penetration Welded Nozzles RS-23-105, Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections2023-10-10010 October 2023 Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections RS-23-093, License Amendment to Braidwood Station, Units 1 and 2, and Byron Station, Units 1 and 2, Technical Specifications 3.7.15, Spent Fuel Pool Boron Concentration, 3.7.16, Spent Fuel.2023-09-29029 September 2023 License Amendment to Braidwood Station, Units 1 and 2, and Byron Station, Units 1 and 2, Technical Specifications 3.7.15, Spent Fuel Pool Boron Concentration, 3.7.16, Spent Fuel. RS-23-094, Relief Request I4R-24, Alternative for Post-Peening Reexamination Frequency for Reactor Pressure Vessel Head Penetration Nozzle Number 752023-09-29029 September 2023 Relief Request I4R-24, Alternative for Post-Peening Reexamination Frequency for Reactor Pressure Vessel Head Penetration Nozzle Number 75 RS-23-091, Relief Request I4R-25, Alternative Requirements for Reactor Pressure Vessel Inservice Inspection Intervals2023-09-26026 September 2023 Relief Request I4R-25, Alternative Requirements for Reactor Pressure Vessel Inservice Inspection Intervals RS-23-083, Withdrawal - Proposed Alternatives Related to the Steam Generators2023-06-27027 June 2023 Withdrawal - Proposed Alternatives Related to the Steam Generators RS-23-077, Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations2023-06-16016 June 2023 Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations RS-23-074, Supplement to Application for License Amendment to Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink2023-06-0909 June 2023 Supplement to Application for License Amendment to Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink RS-23-075, Application for Technical Specification Improvement to Extend the Completion Time for Condition B of Technical Specification 3.5.1, Accumulators, Using the Consolidated Line Item Improvement Process2023-06-0707 June 2023 Application for Technical Specification Improvement to Extend the Completion Time for Condition B of Technical Specification 3.5.1, Accumulators, Using the Consolidated Line Item Improvement Process RS-23-050, Supplement to Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube.2023-05-22022 May 2023 Supplement to Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube. RS-23-056, Response to Request for Additional Information to Braidwood Station, Unit 1, and Byron Station, Unit 1, for Steam Generator License Renewal Response to Commitment 102023-04-20020 April 2023 Response to Request for Additional Information to Braidwood Station, Unit 1, and Byron Station, Unit 1, for Steam Generator License Renewal Response to Commitment 10 RS-23-055, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors2023-04-10010 April 2023 Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors RS-23-052, License Amendment to Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink2023-03-24024 March 2023 License Amendment to Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink RS-23-049, Constellation Energy Generation, LLC, Report on Status of Decommissioning Funding for Reactors and Independent Spent Fuel Storage Installations2023-03-23023 March 2023 Constellation Energy Generation, LLC, Report on Status of Decommissioning Funding for Reactors and Independent Spent Fuel Storage Installations RS-23-045, Constellation Energy Generation, LLC Submittal of Fitness for Duty Performance Data Reports for 2022 Per 10 CFR 26.717(c) & 10 CFR 26.2032023-02-28028 February 2023 Constellation Energy Generation, LLC Submittal of Fitness for Duty Performance Data Reports for 2022 Per 10 CFR 26.717(c) & 10 CFR 26.203 RS-23-038, Response to Request for Additional Information for the Byron Proposal to Reinsert an Accident Tolerant Fuel Lead Test Assembly2023-02-27027 February 2023 Response to Request for Additional Information for the Byron Proposal to Reinsert an Accident Tolerant Fuel Lead Test Assembly RS-23-040, Constellation Energy Generation, LLC, Supplemental Information - Proposed Alternatives Related to the Steam Generators2023-02-21021 February 2023 Constellation Energy Generation, LLC, Supplemental Information - Proposed Alternatives Related to the Steam Generators RS-23-003, Constellation Energy Generation, LLC, Summary of Changes to Quality Assurance Topical Report, NO-AA-10, and Decommissioning Quality Assurance Program, NO-DC-102023-01-31031 January 2023 Constellation Energy Generation, LLC, Summary of Changes to Quality Assurance Topical Report, NO-AA-10, and Decommissioning Quality Assurance Program, NO-DC-10 RS-22-123, Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator2022-12-0707 December 2022 Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator RS-22-126, Constellation Energy Generation, LLC - Request to Use Provisions of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section XI2022-11-30030 November 2022 Constellation Energy Generation, LLC - Request to Use Provisions of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section XI RS-22-118, Withdrawal of License Amendment Request to Revise Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink2022-10-31031 October 2022 Withdrawal of License Amendment Request to Revise Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink RS-22-110, Supplemental Information - Proposed Alternatives Related to the Steam Generators and Request.2022-09-20020 September 2022 Supplemental Information - Proposed Alternatives Related to the Steam Generators and Request. RS-22-097, License Amendment Request to Reinsert an Accident Tolerant Fuel Lead Test Assembly2022-08-31031 August 2022 License Amendment Request to Reinsert an Accident Tolerant Fuel Lead Test Assembly RS-22-093, Advisement of Leadership Changes for Constellation Energy Generation, LLC and Submittal of Updated Standard Practice Procedures Plans2022-08-18018 August 2022 Advisement of Leadership Changes for Constellation Energy Generation, LLC and Submittal of Updated Standard Practice Procedures Plans RS-22-086, R. E. Ginna Nuclear Power Plant - Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam.2022-08-10010 August 2022 R. E. Ginna Nuclear Power Plant - Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam. RS-22-084, Response to Request for Additional Information Proposed Alternative for Examinations of Examination Categories B-B, B-D, and C-A Steam Generator .2022-06-17017 June 2022 Response to Request for Additional Information Proposed Alternative for Examinations of Examination Categories B-B, B-D, and C-A Steam Generator . RS-22-072, Response to Request for Additional Information Regarding License Amendment to Revise Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink2022-06-0606 June 2022 Response to Request for Additional Information Regarding License Amendment to Revise Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink RS-22-075, License Amendment to Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink2022-06-0202 June 2022 License Amendment to Braidwood Station, Units 1 and 2, Technical Specification 3.7.9, Ultimate Heat Sink RS-22-074, Response to Request for Additional Information - Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds .2022-05-20020 May 2022 Response to Request for Additional Information - Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds . RS-22-073, Supplemental Information Regarding License Amendment Request -Adoption of Technical Specification Task Force (TSTF) Traveler TSTF-501, Revision 1, Relocate Stored Fuel Oil and Lube.2022-05-19019 May 2022 Supplemental Information Regarding License Amendment Request -Adoption of Technical Specification Task Force (TSTF) Traveler TSTF-501, Revision 1, Relocate Stored Fuel Oil and Lube. RS-22-057, Constellation Radiological Emergency Plan Addendum Revision2022-04-21021 April 2022 Constellation Radiological Emergency Plan Addendum Revision RS-22-037, License Amendment Request - Adoption of Technical Specification Task Force (TSTF) Traveler TSTF-501, Revision 1, Relocate Stored Fuel Oil and Lube Oil Volume Values to Licensee Control2022-04-21021 April 2022 License Amendment Request - Adoption of Technical Specification Task Force (TSTF) Traveler TSTF-501, Revision 1, Relocate Stored Fuel Oil and Lube Oil Volume Values to Licensee Control RS-22-051, Constellation Energy Generation, LLC - Update to Correspondence Addressees and Service Lists2022-04-12012 April 2022 Constellation Energy Generation, LLC - Update to Correspondence Addressees and Service Lists RS-22-047, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors2022-04-0808 April 2022 Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors RS-22-050, Supplemental Information - Proposed Alternative for Examination of Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds2022-04-0808 April 2022 Supplemental Information - Proposed Alternative for Examination of Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds RS-22-049, Constellation Energy Generation, LLC, Supplemental Information to Correct Typographical Errors in Constellation'S Application to Revise Technical Specifications to Adopt TSTF-541 Revision 2, Add Exceptions to Surveillance Requirements for2022-04-0404 April 2022 Constellation Energy Generation, LLC, Supplemental Information to Correct Typographical Errors in Constellation'S Application to Revise Technical Specifications to Adopt TSTF-541 Revision 2, Add Exceptions to Surveillance Requirements for V RS-22-045, Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2022-01, Preparation and Scheduling of Operator Licensing Examinations2022-03-25025 March 2022 Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2022-01, Preparation and Scheduling of Operator Licensing Examinations RS-22-014, Application to Adopt TSTF-246, RTS Instrumentation, 3.3.1 Condition F Completion Time2022-03-24024 March 2022 Application to Adopt TSTF-246, RTS Instrumentation, 3.3.1 Condition F Completion Time RS-22-041, Withdrawal of License Amendment Request to Revise Technical Specifications 5.6.5, Core Operating Limits Report (COLR) to Add References to NRC Approved Topical Report with Administrative Changes2022-03-22022 March 2022 Withdrawal of License Amendment Request to Revise Technical Specifications 5.6.5, Core Operating Limits Report (COLR) to Add References to NRC Approved Topical Report with Administrative Changes RS-22-036, Supplemental Information - Proposed Alternative for Examination of Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds2022-03-10010 March 2022 Supplemental Information - Proposed Alternative for Examination of Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds RS-22-023, Constellation Energy Generation, LLC, Executed Trust Fund Agreement Amendment and Subordinate Trust Agreement2022-02-23023 February 2022 Constellation Energy Generation, LLC, Executed Trust Fund Agreement Amendment and Subordinate Trust Agreement RS-22-027, Constellation, Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-541 Revision 2, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated2022-02-23023 February 2022 Constellation, Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-541 Revision 2, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated P RS-22-019, Constellation Energy Generation, LLC - Update to Correspondence Addressees and Service Lists2022-02-16016 February 2022 Constellation Energy Generation, LLC - Update to Correspondence Addressees and Service Lists RS-22-015, Notification of Completion of License Transfer and Request to Continue Processing Pending NRC Actions Previously Requested by Exelon Generation Company, LLC2022-02-0101 February 2022 Notification of Completion of License Transfer and Request to Continue Processing Pending NRC Actions Previously Requested by Exelon Generation Company, LLC 2024-01-11
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Michael P. Gallagher Vice President. License Renewal Exelon Generation Exelon Nuclear 200 Exelon Way Kennett Square. PA 19348 610 765 5958 Office 610 765 5956 Fax www.exeloncorp.com michaelp.gallagher@exeloncorp.com 10 CFR 50 10 CFR 51 10 CFR 54 RS-14-135 May 5, 2014 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 Braidwood Station, Units 1 and 2 Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN 50-456 and STN 50-457 Byron Station, Units 1 and 2 Facility Operating License Nos. NPF-37 and NPF-66 NRC Docket Nos. STN 50-454 and STN 50-455
Subject:
10 CFR 54.21(b) Annual Amendment to the Braidwood Station, Units 1 and 2, and Byron Station, Units 1 and 2, License Renewal Application
Reference:
Letter from Michael P. Gallagher, Exelon Generation Company LLC (Exelon) to NRC Document Control Desk, dated May 29, 2013, "Application for Renewed Operating Licenses."
In the Reference letter, Exelon Generation Company, LLC (Exelon) submitted the License Renewal Application (LRA) for the Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 (BBS). As required by 10 CFR 54.21(b), a review has been performed to identify any current licensing basis (CLB) changes made since submittal of the LRA which have a material effect on the content of the LRA, including the FSAR Supplement. This amendment identified a change to the current licensing basis (CLB) that materially affects the contents of the BBS LRA.
Enclosure A contains a description of this LRA change. Enclosure B contains an update to the LRA associated with this change.
There are no new or revised regulatory commitments contained in this letter.
If you have any questions, please contact Mr. AI Fulvio, Manager, Exelon License Renewal, at 610-765-5936.
May 5, 2014 U.S. Nuclear Regulatory Commission Page 2 I declare under penalty of perjury that the foregoing is true and correct.
Executed on 5-5""' 20/4 Respectfully,
Enclosures:
A. Description of LRA Update Associated with RWST Heaters B. LRA Updates Associated with RWST Heaters cc: Regional Administrator- NRC Region Ill NRC Project Manager (Safety Review), NRR-DLR NRC Project Manager (Environmental Review), NRR-DLR NRC Senior Resident Inspector, Braidwood Station NRC Senior Resident Inspector, Byron Station NRC Project Manager, NRR-DORL-Braidwood and Byron Stations Illinois Emergency Management Agency - Division of Nuclear Safety
RS-14-135 Enclosure A Page 1 of 1 Enclosure A Description of LRA Update Associated with RWST Heaters Prior to submittal of the Byron Station, Units 1 and 2, and Braidwood Station, Units 1 and 2 License Renewal Application (LRA), Exelon had replaced the Byron Units 1 and 2 Refueling Water Storage Tank (RWST) electric heaters. The material was changed from a carbon steel shell to a stainless steel shell. At the time of LRA submittal, the Braidwood Units 1 and 2 still had the original RWST electric heaters with carbon steel shells and stainless steel flanges.
These material differences were appropriately identified in the LRA Safety Injection System aging management review line items. In June 2013 and November 2013, the carbon steel shells on Braidwood Units 1 and 2, respectively, were physically modified to stainless steel, such that the Braidwood heaters are now all stainless steel similar to the Byron electric heaters.
Therefore, with this submittal, the aging management review line items for the carbon steel material on the RWST electric heaters are deleted from the Safety Injection System aging management review line items, as shown in Enclosure B. The stainless steel electric heaters aging management review line items in the LRA on page 3.2-49 are now applicable to the complete Braidwood heater assembly. Therefore, no additional aging management review line items are necessary.
RS-14-135 Enclosure B Page 1 of 1 Enclosure B LRA Updates Associated with RWST Heaters As a result of the LRA update associated with the Braidwood RWST heater replacement described in Enclosure A of this letter, LRA Table 3.2.2-4 on page 3.2-48 is revised as shown below. Deletions are shown with strikethroughs.
Table 3.2.2-4 Safety Injection System Component Intended Function Material Environment Aging Effect Requiring Aging Management NUREG-1801 Item Table 1 Item Notes Type Management Programs Accumulator Pressure Boundary Carbon or Low Air with Borated Water Loss of Material Boric Acid Corrosion V.D1.E-28 3.2.1-9 A Alloy Steel with Leakage (External) (B.2.1.4)
Stainless Steel External Surfaces V.E.E-44 3.2.1-40 A Cladding Monitoring of Mechanical Components (B.2.1.23)
Treated Borated Water Loss of Material One-Time Inspection V.D1.EP-41 3.2.1-22 A (Internal) (B.2.1.20)
Water Chemistry (B.2.1.2) V.D1.EP-41 3.2.1-22 A Bolting Mechanical Closure Carbon and Low Air with Borated Water Loss of Material Boric Acid Corrosion V.E.E-41 3.2.1-9 A Alloy Steel Leakage (External) (B.2.1.4)
Bolting Bolting Integrity (B.2.1.9) V.E.EP-70 3.2.1-13 A Loss of Preload Bolting Integrity (B.2.1.9) V.E.EP-69 3.2.1-15 A Stainless Steel Air with Borated Water Loss of Material Bolting Integrity (B.2.1.9) V.E.EP-70 3.2.1-13 A Bolting Leakage (External) Loss of Preload Bolting Integrity (B.2.1.9) V.E.EP-69 3.2.1-15 A Electric Leakage Boundary Carbon Steel - Air with Borated Water Loss of Material Boric Acid Corrosion V.D1.E-28 3.2.1-9 A Heaters (Braidwood only) Leakage (External) (B.2.1.4)
(Refueling External Surfaces V.E.E-44 3.2.1-40 A Water Storage Monitoring of Mechanical Tank) Components (B.2.1.23)
Treated Borated Water Loss of Material One-Time Inspection G, 1 (Internal) (B.2.1.20)
Water Chemistry (B.2.1.2) G, 1