Letter Sequence Request |
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EPID:L-2022-LRO-0065, (CPNPP) Unit 2 Refueling Outage 19 (2RF19) Steam Generator 180 Day Report (Approved, Closed) |
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Category:Inservice/Preservice Inspection and Test Report
MONTHYEARCP-202300442, (CPNPP) - Request to Use Later Code Edition for Inservice Inspection (ISI) Program2023-09-15015 September 2023 (CPNPP) - Request to Use Later Code Edition for Inservice Inspection (ISI) Program CP-202300411, (Cpnpp), Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 2 Refueling Outage 20 (2RF20)2023-08-17017 August 2023 (Cpnpp), Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 2 Refueling Outage 20 (2RF20) CP-202200419, (CPNPP) - Unit 1 Refueling Outage 22 (1RF22) Steam Generator 180 Day Report2022-11-0303 November 2022 (CPNPP) - Unit 1 Refueling Outage 22 (1RF22) Steam Generator 180 Day Report CP-202200306, (CPNPP) - Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 1 Refueling Outage 22 (1RF22)2022-08-11011 August 2022 (CPNPP) - Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 1 Refueling Outage 22 (1RF22) CP-202200200, (CPNPP) Unit 2 Refueling Outage 19 (2RF19) Steam Generator 180 Day Report2022-05-0505 May 2022 (CPNPP) Unit 2 Refueling Outage 19 (2RF19) Steam Generator 180 Day Report TXX-2201, (CPNPP) - Inservice Inspection (ISI) Owner'S Activity Report (OAR-1 Form) for Unit 2 Refueling Outage 19 (2RF19)2022-02-0101 February 2022 (CPNPP) - Inservice Inspection (ISI) Owner'S Activity Report (OAR-1 Form) for Unit 2 Refueling Outage 19 (2RF19) CP-202100751, (CPNPP) - ASME OM Inservice Test Program Relief Request SNB-3, Snubber Inservice Program Third Internal Extension2022-01-0404 January 2022 (CPNPP) - ASME OM Inservice Test Program Relief Request SNB-3, Snubber Inservice Program Third Internal Extension CP-202100150, (CPNPP) Units 1 & 2 - Inservice Testing Plan for Pumps & Valves Third Interval, Revision 42021-03-23023 March 2021 (CPNPP) Units 1 & 2 - Inservice Testing Plan for Pumps & Valves Third Interval, Revision 4 CP-202100061, (CPNPP) - Inservice Inspection (Isi) Owner'S Activity Report (OAR-1 Form) for Unit 1 Refueling Outage 21 (1RF21)2021-01-27027 January 2021 (CPNPP) - Inservice Inspection (Isi) Owner'S Activity Report (OAR-1 Form) for Unit 1 Refueling Outage 21 (1RF21) ML20282A7342020-10-22022 October 2020 Proposed Alternative to the Requirements of the ASME Code to Extend the Inservice Inspection Interval (EPID L-2020-LLR-0059 (COVID-19)) CP-202000463, (CPNPP) - Inservice Test (IST) Program Request to Use Later Code Edition2020-08-31031 August 2020 (CPNPP) - Inservice Test (IST) Program Request to Use Later Code Edition CP-202000262, Snubber Testing and Snubber Visual Examinations Relief Request2020-04-10010 April 2020 Snubber Testing and Snubber Visual Examinations Relief Request CP-202000261, Inservice Inspection (ISI) and Inservice Testing (IST) Program Relief Requests2020-04-0707 April 2020 Inservice Inspection (ISI) and Inservice Testing (IST) Program Relief Requests CP-201900496, Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 1 Refueling Outage 20 (IRF20)2019-08-26026 August 2019 Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 1 Refueling Outage 20 (IRF20) CP-201800215, Submittal of Nineteenth Refueling Outage (1RF19) Steam Generator 180 Day Report2018-04-19019 April 2018 Submittal of Nineteenth Refueling Outage (1RF19) Steam Generator 180 Day Report CP-201800086, Submittal of Unit 1 Nineteenth Refueling Outage (IRF19) Inservice Inspection (ISI) Summary Report (2007 Edition of ASME Code, Section XI, 2008 Addenda Unit 1 Third Interval Start Date: August 13, 2010 Unit 1 Third ..2018-02-0707 February 2018 Submittal of Unit 1 Nineteenth Refueling Outage (IRF19) Inservice Inspection (ISI) Summary Report (2007 Edition of ASME Code, Section XI, 2008 Addenda Unit 1 Third Interval Start Date: August 13, 2010 Unit 1 Third .. CP-201700623, Submittal of Sixteenth Refueling Outage (2RF16) Inservice Inspection (ISI) Summary Report (2007 Edition of ASME Code, Section XI, 2008 Addenda Third Interval, Start Date: Aug. 3, 2014 Third Interval End Date: Aug. 2, 2023)2017-08-0101 August 2017 Submittal of Sixteenth Refueling Outage (2RF16) Inservice Inspection (ISI) Summary Report (2007 Edition of ASME Code, Section XI, 2008 Addenda Third Interval, Start Date: Aug. 3, 2014 Third Interval End Date: Aug. 2, 2023) CP-201600869, Submittal of Eighteenth Refueling Outage (1RF18) Inservice Inspection Summary Report2016-08-31031 August 2016 Submittal of Eighteenth Refueling Outage (1RF18) Inservice Inspection Summary Report CP-201600148, Requesting Additional Information for Relief Request b-9 for Unit 2 Second Ten Year Inservice Inspection Interval2016-03-0202 March 2016 Requesting Additional Information for Relief Request b-9 for Unit 2 Second Ten Year Inservice Inspection Interval CP-201600117, Submittal of Fifteenth Refueling Outage (2RF15), Inservice Inspection (ISI) Summary Report (2007 Edition of ASME Code, Section XI, 2008 Addenda, Third Interval Start Date: August 3, 2014, Third Interval End Date: August 2, 2023)2016-02-0808 February 2016 Submittal of Fifteenth Refueling Outage (2RF15), Inservice Inspection (ISI) Summary Report (2007 Edition of ASME Code, Section XI, 2008 Addenda, Third Interval Start Date: August 3, 2014, Third Interval End Date: August 2, 2023) CP-201500777, Relief Request B-10, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August..2015-08-0303 August 2015 Relief Request B-10, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August.. CP-201500775, Relief Request B-3, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August..2015-08-0303 August 2015 Relief Request B-3, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August.. CP-201500776, Relief Request B-9, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August..2015-08-0303 August 2015 Relief Request B-9, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August.. CP-201500778, Relief Request B-11, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August..2015-08-0303 August 2015 Relief Request B-11, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August.. CP-201500779, Relief Request B-15, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August..2015-08-0303 August 2015 Relief Request B-15, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August.. CP-201500780, Relief Request C-2, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August..2015-08-0303 August 2015 Relief Request C-2, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August.. CP-201500781, Relief Request C-4, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August..2015-08-0303 August 2015 Relief Request C-4, Second Ten Year Inservice Inspection Interval from 10CFR50.55a Inspection Requirements Due to Physical Interferences (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August.. CP-201500685, Response to Request for Additional Information for Relief Request 2A3-1, Unit 2, Inservice Inspection for Application of an Alternative to the ASME Boiler and Pressure Vessel Code Section XI Examination Requirements for Class 1 & 2.2015-07-22022 July 2015 Response to Request for Additional Information for Relief Request 2A3-1, Unit 2, Inservice Inspection for Application of an Alternative to the ASME Boiler and Pressure Vessel Code Section XI Examination Requirements for Class 1 & 2. CP-201500671, Relief Request T-1 for Inservice Testing Program for Application of an Alternative to the ASME OM Code Frequency Specifications, (2007 Edition of ASME Code, Section XI, 2008 Addenda Third Interval Start Date: August 3.2015-06-30030 June 2015 Relief Request T-1 for Inservice Testing Program for Application of an Alternative to the ASME OM Code Frequency Specifications, (2007 Edition of ASME Code, Section XI, 2008 Addenda Third Interval Start Date: August 3. CP-201500244, Relief Request 2A3-1 for Inservice Inspection for Application of an Alternative to the ASME Boiler and Pressure Vessel Code Section XI Examination Requirements for Class 1 and 2 Piping Welds (2007 Edition of ASME Code.2015-03-0404 March 2015 Relief Request 2A3-1 for Inservice Inspection for Application of an Alternative to the ASME Boiler and Pressure Vessel Code Section XI Examination Requirements for Class 1 and 2 Piping Welds (2007 Edition of ASME Code. CP-201500157, Relief Request No. 2C3-1 for the Reactor Pressure Vessel Leak-Off Flange (Third ISI Interval Start Date: August 3, 2014; Third ISI Interval End Date: August 2, 2023)2015-02-24024 February 2015 Relief Request No. 2C3-1 for the Reactor Pressure Vessel Leak-Off Flange (Third ISI Interval Start Date: August 3, 2014; Third ISI Interval End Date: August 2, 2023) CP-201500222, Submittal of Unit 1, Seventeenth Refueling Outage (1RF17) Inservice Inspection Summary Report (2007 Edition of ASME Code, Section XI, 2008 Addenda Third Interval Start Date August 13, 2010 Third Interval End Date: August 12, 2020)2015-02-18018 February 2015 Submittal of Unit 1, Seventeenth Refueling Outage (1RF17) Inservice Inspection Summary Report (2007 Edition of ASME Code, Section XI, 2008 Addenda Third Interval Start Date August 13, 2010 Third Interval End Date: August 12, 2020) ML14325A7592014-11-19019 November 2014 Transmittal of Inservice Testing Plan for Pumps and Valves Third Interval, Revision 1 CP-201401035, Relief Requests Nos. B-7, B-12 and B-13 for the Second 10-Year ISI Interval (Second ISI Interval Start Date: August 3, 2004; Second ISI Interval End Date: August 2, 2014)2014-08-27027 August 2014 Relief Requests Nos. B-7, B-12 and B-13 for the Second 10-Year ISI Interval (Second ISI Interval Start Date: August 3, 2004; Second ISI Interval End Date: August 2, 2014) CP-201400933, Submittal of Unit 2 Fourteenth Refueling Outage (2RF14) Inservice Inspection (ISI) Summary Report (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August 3, 2004 Second Interval End Date: August 2, 20142014-07-23023 July 2014 Submittal of Unit 2 Fourteenth Refueling Outage (2RF14) Inservice Inspection (ISI) Summary Report (1998 Edition of ASME Code, Section XI, 2000 Addenda Second Interval Start Date: August 3, 2004 Second Interval End Date: August 2, 2014 CP-201401379, Transmittal of Inservice Testing Plan for Pumps and Valves Third Interval, Revision 12014-02-24024 February 2014 Transmittal of Inservice Testing Plan for Pumps and Valves Third Interval, Revision 1 CP-201300143, Response to RAI for Unit 1 Relief Request No. B-22013-02-0707 February 2013 Response to RAI for Unit 1 Relief Request No. B-2 CP-201300005, Submittal of Inservice Inspection Summary Report for the 13th Refueling Outage2013-01-31031 January 2013 Submittal of Inservice Inspection Summary Report for the 13th Refueling Outage CP-201300003, Submittal of Relief Request No. B-2, Third 10 Year ISI Interval from 10CFR50.55a Requirements for Reactor Vessel Hot Leg Nozzle Weld Examinations (Third ISI Interval Start Date August 13, 2010)2013-01-16016 January 2013 Submittal of Relief Request No. B-2, Third 10 Year ISI Interval from 10CFR50.55a Requirements for Reactor Vessel Hot Leg Nozzle Weld Examinations (Third ISI Interval Start Date August 13, 2010) CP-201200879, Relief Request No. V-1 for Unit 1 and Unit 2 Inservice Testing Plan for Pumps and Valves (ASME OM Code 2004 Edition, Through 2006 Addenda; Third Interval Start Date: August 3, 2013)2012-09-0606 September 2012 Relief Request No. V-1 for Unit 1 and Unit 2 Inservice Testing Plan for Pumps and Valves (ASME OM Code 2004 Edition, Through 2006 Addenda; Third Interval Start Date: August 3, 2013) CP-201200045, Submittal of Unit 1 Fifteenth Refueling Outage (1RF15) Inservice Inspection (ISI) Summary Report (Unit 1: 1998 Edition of ASME Code Section XI Through 2000 Addenda, Interval Start Date - August 13, 2010, Third Interval)2012-01-17017 January 2012 Submittal of Unit 1 Fifteenth Refueling Outage (1RF15) Inservice Inspection (ISI) Summary Report (Unit 1: 1998 Edition of ASME Code Section XI Through 2000 Addenda, Interval Start Date - August 13, 2010, Third Interval) CP-201101429, Twelfth Refueling Outage (2RF12) Steam Generator 180 Day Report2011-10-12012 October 2011 Twelfth Refueling Outage (2RF12) Steam Generator 180 Day Report CP-201101031, Transmittal of Unit 1 Inservice Inspection Program Plan, Revision 0 (Unit 1: ASME Code XI 1998 Edition, 1999 and 2000 Addenda, Interval Start - August 13, 2010, Third Interval)2011-08-0202 August 2011 Transmittal of Unit 1 Inservice Inspection Program Plan, Revision 0 (Unit 1: ASME Code XI 1998 Edition, 1999 and 2000 Addenda, Interval Start - August 13, 2010, Third Interval) CP-201100852, Submittal of 12th Refueling Outage (2RF12) Inservice Inspection (ISI) Summary Report (1998 Edition of ASME Code Section XI Through 2000 Addenda, Interval Start Date - August 4,2004, Second Interval)2011-07-21021 July 2011 Submittal of 12th Refueling Outage (2RF12) Inservice Inspection (ISI) Summary Report (1998 Edition of ASME Code Section XI Through 2000 Addenda, Interval Start Date - August 4,2004, Second Interval) CP-201001545, Relief Request No. B-10 for the Unit 1 Second 10 Years ISI Interval from 10 CFR 50.55a Inspection Requirements Due to Physical Interferences (Second Interval Start Date: August 13, 2000)2010-12-15015 December 2010 Relief Request No. B-10 for the Unit 1 Second 10 Years ISI Interval from 10 CFR 50.55a Inspection Requirements Due to Physical Interferences (Second Interval Start Date: August 13, 2000) CP-201000889, Relief Request No. C-6 for Unit 1 Second 10 Year ISI Interval from 10 CFR 50.55a Inspection Requirements Due to Physical Interferences (Second Interval Start Date: August 13, 2000)2010-12-15015 December 2010 Relief Request No. C-6 for Unit 1 Second 10 Year ISI Interval from 10 CFR 50.55a Inspection Requirements Due to Physical Interferences (Second Interval Start Date: August 13, 2000) CP-201000888, Submittal of Unit 1 Fourteenth Refueling Outage Inservice Inspection Summary Report (Unit 1: 1998 Edition of ASME Code Section XI Through 2000 Addenda, Interval Start Date - August 13, 2000, Second Interval)2010-07-22022 July 2010 Submittal of Unit 1 Fourteenth Refueling Outage Inservice Inspection Summary Report (Unit 1: 1998 Edition of ASME Code Section XI Through 2000 Addenda, Interval Start Date - August 13, 2000, Second Interval) CP-200900707, Revision to Relief Request No. P-2 for the Units 1 & 2 Inservice Testing Plan for Pumps and Valves (ASME OM Code 1998 Edition, Through 2000 Addenda; Interval Start Date: August 3, 2004, Second Interval)2009-05-14014 May 2009 Revision to Relief Request No. P-2 for the Units 1 & 2 Inservice Testing Plan for Pumps and Valves (ASME OM Code 1998 Edition, Through 2000 Addenda; Interval Start Date: August 3, 2004, Second Interval) CP-200900009, Request for Relief to Extend the Unit 1 & 2 Inservice Inspection Interval for the Reactor Vessel Weld Examination and License Amendment Request 09-004 to Add License Condition for Submittal of ISI Information and Analyses2009-03-0404 March 2009 Request for Relief to Extend the Unit 1 & 2 Inservice Inspection Interval for the Reactor Vessel Weld Examination and License Amendment Request 09-004 to Add License Condition for Submittal of ISI Information and Analyses CP-200900008, Submittal of Unit 1 Thirteenth Refueling Outage (1RF13) Inservice Inspection (ISI) Summary Report (Unit 1:1998 Edition of ASME Code Section XI Through 2000 Addenda, Interval Start Date - 08/13/2000, Second Interval2009-01-0808 January 2009 Submittal of Unit 1 Thirteenth Refueling Outage (1RF13) Inservice Inspection (ISI) Summary Report (Unit 1:1998 Edition of ASME Code Section XI Through 2000 Addenda, Interval Start Date - 08/13/2000, Second Interval 2023-09-15
[Table view] Category:Letter type:CP
MONTHYEARCP-202400030, License Renewal Application Revision 0 - Supplement 3, Revision 12024-01-31031 January 2024 License Renewal Application Revision 0 - Supplement 3, Revision 1 CP-202400034, (CPNPP) - Core Operating Limits Report (Colr), Unit 2 Cycle 21, (ERX-23-001, Revision 1)2024-01-29029 January 2024 (CPNPP) - Core Operating Limits Report (Colr), Unit 2 Cycle 21, (ERX-23-001, Revision 1) CP-202300575, (Cpnpp), License Amendment Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors Supplement 22023-12-13013 December 2023 (Cpnpp), License Amendment Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors Supplement 2 CP-202300566, (Cpnpp), Special Report 1-SR-23-001-00, Inoperable Post Accident Monitoring Instrumentation2023-12-12012 December 2023 (Cpnpp), Special Report 1-SR-23-001-00, Inoperable Post Accident Monitoring Instrumentation CP-202300494, License Renewal Application Revision 0, Supplement 32023-12-0606 December 2023 License Renewal Application Revision 0, Supplement 3 CP-202300349, License Amendment Request (Lar) 23-004 Technical Specifications (TS) 3.9.3, Nuclear Instrumentation2023-11-20020 November 2023 License Amendment Request (Lar) 23-004 Technical Specifications (TS) 3.9.3, Nuclear Instrumentation CP-202300416, Supplemental Information to Facilitate Acceptance of Licensee Amendment Request 23-002, Application Regarding GDC-5 Shared System Requirements2023-10-12012 October 2023 Supplemental Information to Facilitate Acceptance of Licensee Amendment Request 23-002, Application Regarding GDC-5 Shared System Requirements CP-202300432, Response to Request for Additional Information Regarding the Safety Review of the License Renewal Application - Set 42023-10-0404 October 2023 Response to Request for Additional Information Regarding the Safety Review of the License Renewal Application - Set 4 CP-202300442, (CPNPP) - Request to Use Later Code Edition for Inservice Inspection (ISI) Program2023-09-15015 September 2023 (CPNPP) - Request to Use Later Code Edition for Inservice Inspection (ISI) Program CP-202300391, (CPNPP) - Request for Exemption from 10 CFR 50.71(e)(4) Final Safety Analysis Update Schedule2023-08-24024 August 2023 (CPNPP) - Request for Exemption from 10 CFR 50.71(e)(4) Final Safety Analysis Update Schedule CP-202300411, (Cpnpp), Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 2 Refueling Outage 20 (2RF20)2023-08-17017 August 2023 (Cpnpp), Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 2 Refueling Outage 20 (2RF20) CP-202300361, (CPNPP) - Unit 2 Refueling Outage 20 (2RF20) Steam Generator 180 Day Report2023-08-17017 August 2023 (CPNPP) - Unit 2 Refueling Outage 20 (2RF20) Steam Generator 180 Day Report CP-202300401, 10CFR50.59 Evaluation Summary Report 024, 10CFR72.48 Evaluation Summary Report 009, and Commitment Material Change Evaluation Report 0182023-08-15015 August 2023 10CFR50.59 Evaluation Summary Report 024, 10CFR72.48 Evaluation Summary Report 009, and Commitment Material Change Evaluation Report 018 CP-202300358, (Cpnpp), Transmittal of Electronic Licensing Basis Documents Including Certified FSAR Amendment 1122023-08-0101 August 2023 (Cpnpp), Transmittal of Electronic Licensing Basis Documents Including Certified FSAR Amendment 112 CP-202300322, Response to Requests for Additional Information Regarding Review of the License Renewal Application Sets 2 and 32023-07-27027 July 2023 Response to Requests for Additional Information Regarding Review of the License Renewal Application Sets 2 and 3 CP-202300348, (Cpnpp), Transmittal of Revised Emergency Plan (Revision 48)2023-07-18018 July 2023 (Cpnpp), Transmittal of Revised Emergency Plan (Revision 48) CP-202300285, Response to Request for Additional Information Regarding Review of the License Renewal Application - Set 12023-07-12012 July 2023 Response to Request for Additional Information Regarding Review of the License Renewal Application - Set 1 CP-202300262, Response to Request for Confirmation of Information Regarding Review of the License Renewal Application - Set 22023-06-20020 June 2023 Response to Request for Confirmation of Information Regarding Review of the License Renewal Application - Set 2 CP-202300263, Supplemental Information to Facilitate Acceptance of Licensee Amendment Request 23-002, Application Regarding GDC-5 Shared System Requirements2023-06-15015 June 2023 Supplemental Information to Facilitate Acceptance of Licensee Amendment Request 23-002, Application Regarding GDC-5 Shared System Requirements CP-202300248, Response to Request for Additional Information Regarding License Renewal Application - Set 12023-06-13013 June 2023 Response to Request for Additional Information Regarding License Renewal Application - Set 1 CP-202300209, Response to Request for Additional Information - License Renewal Application Environmental Review2023-06-0606 June 2023 Response to Request for Additional Information - License Renewal Application Environmental Review CP-202300207, Revision to Comanche Peak Nuclear Power Plant'S Response to Notice of Violation (NOV) 05000445/2021011-052023-05-25025 May 2023 Revision to Comanche Peak Nuclear Power Plant'S Response to Notice of Violation (NOV) 05000445/2021011-05 CP-202300182, Response to Requests for Confirmation of Information Regarding the Environmental Review of the License Renewal Application2023-05-0808 May 2023 Response to Requests for Confirmation of Information Regarding the Environmental Review of the License Renewal Application CP-202300201, (CPNPP) - Core Operating Limits Report (Colr), Unit 2 Cycle 21, (ERX-23-001, Revision 0)2023-05-0404 May 2023 (CPNPP) - Core Operating Limits Report (Colr), Unit 2 Cycle 21, (ERX-23-001, Revision 0) CP-202300160, (Cpnpp), 2022 Annual Radiological Environmental Operating Report2023-04-27027 April 2023 (Cpnpp), 2022 Annual Radiological Environmental Operating Report CP-202300159, (Cpnpp), 2022 Annual Radiological Effluent Release Report2023-04-27027 April 2023 (Cpnpp), 2022 Annual Radiological Effluent Release Report CP-202300165, License Renewal Application Revision 0 - Supplement 22023-04-24024 April 2023 License Renewal Application Revision 0 - Supplement 2 CP-202300175, Submittal of 2022 Annual Environmental Operating Report (Non-Radiological)2023-04-20020 April 2023 Submittal of 2022 Annual Environmental Operating Report (Non-Radiological) CP-202300181, ISFSI, Beaver Valley, Units 1 and 2, ISFSI, Davis-Besse, Unit 1, ISFSI, Perry, Unit 1, ISFSI, Corrected Affidavit for Application for Order Consenting to Transfer of Licenses and Conforming License Amendments2023-04-20020 April 2023 ISFSI, Beaver Valley, Units 1 and 2, ISFSI, Davis-Besse, Unit 1, ISFSI, Perry, Unit 1, ISFSI, Corrected Affidavit for Application for Order Consenting to Transfer of Licenses and Conforming License Amendments CP-202300096, License Amendment Request (LAR) 23-002 Application Regarding GDC-5 Shared Systems Requirements2023-04-20020 April 2023 License Amendment Request (LAR) 23-002 Application Regarding GDC-5 Shared Systems Requirements CP-202300140, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors. LAR 23-0012023-04-19019 April 2023 Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors. LAR 23-001 CP-202300157, ISFSI, Beaver Valley, Units 1 and 2, ISFSI, Davis-Besse, Unit 1, ISFSI, Perry, Unit 1, and ISFSI, Application for Order Consenting to Transfer of Licenses and Conforming License Amendments2023-04-14014 April 2023 ISFSI, Beaver Valley, Units 1 and 2, ISFSI, Davis-Besse, Unit 1, ISFSI, Perry, Unit 1, and ISFSI, Application for Order Consenting to Transfer of Licenses and Conforming License Amendments CP-202300135, License Renewal Application Revision 0 - Supplement 12023-04-0606 April 2023 License Renewal Application Revision 0 - Supplement 1 CP-202300144, (CPNPP) - Decommissioning Report2023-03-30030 March 2023 (CPNPP) - Decommissioning Report CP-202300139, (CPNPP) - Property Damage Insurance2023-03-30030 March 2023 (CPNPP) - Property Damage Insurance CP-202300098, (Cpnpp), Annual Report of Changes in Peak Cladding Temperature2023-03-16016 March 2023 (Cpnpp), Annual Report of Changes in Peak Cladding Temperature CP-202200481, Response to Request for Additional Information - Relief Request Application P-1, Inservice Testing (IST)2022-12-0707 December 2022 Response to Request for Additional Information - Relief Request Application P-1, Inservice Testing (IST) CP-202200454, (Cpnpp), Reply to a Notice of Violation Transmitted Via NRC Letter from Gregory Werner to Ken Peters Dated 11/01/2022, Comanche Peak Nuclear Power Plant, Units 1 and 2 Integrated Inspection Report 05000445/2022003 .2022-12-0101 December 2022 (Cpnpp), Reply to a Notice of Violation Transmitted Via NRC Letter from Gregory Werner to Ken Peters Dated 11/01/2022, Comanche Peak Nuclear Power Plant, Units 1 and 2 Integrated Inspection Report 05000445/2022003 . CP-202200355, Application to Revise Technical Specifications to Apply the Westinghouse Full Spectrum Loss of Coolant Accident Evaluation Model LAR 22-0022022-11-21021 November 2022 Application to Revise Technical Specifications to Apply the Westinghouse Full Spectrum Loss of Coolant Accident Evaluation Model LAR 22-002 CP-202200380, (CPNPP) - Non-Voluntary License Amendment Request to Revise Technical Specifications 3.2.1, Fq(Z), to Implement Methodology from WCAP-17661, Revision 1, Improved RAOC and CAOC Fq Surveillance Technical Specifications2022-11-21021 November 2022 (CPNPP) - Non-Voluntary License Amendment Request to Revise Technical Specifications 3.2.1, Fq(Z), to Implement Methodology from WCAP-17661, Revision 1, Improved RAOC and CAOC Fq Surveillance Technical Specifications CP-202200450, (CPNPP) - Registration of Dry Spent Fuel Storage Canisters2022-11-16016 November 2022 (CPNPP) - Registration of Dry Spent Fuel Storage Canisters CP-202200435, (Cpnpp), Registration of Dry Spent Fuel Storage Canisters2022-11-0808 November 2022 (Cpnpp), Registration of Dry Spent Fuel Storage Canisters CP-202200419, (CPNPP) - Unit 1 Refueling Outage 22 (1RF22) Steam Generator 180 Day Report2022-11-0303 November 2022 (CPNPP) - Unit 1 Refueling Outage 22 (1RF22) Steam Generator 180 Day Report CP-202200357, (CPNPP) Unit 2 - Response to Request for Additional Information, Fall 2021 (2RF19) Steam Generator Tube Inspection Report2022-09-14014 September 2022 (CPNPP) Unit 2 - Response to Request for Additional Information, Fall 2021 (2RF19) Steam Generator Tube Inspection Report CP-202200358, (CPNPP) - Transmittal of Revised Emergency Plan (Revision 46)2022-09-14014 September 2022 (CPNPP) - Transmittal of Revised Emergency Plan (Revision 46) CP-202200246, Evacuation Time Estimate Analysis2022-08-25025 August 2022 Evacuation Time Estimate Analysis CP-202200306, (CPNPP) - Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 1 Refueling Outage 22 (1RF22)2022-08-11011 August 2022 (CPNPP) - Inservice Inspection (ISI) Owner'S Activity Reports (OAR-1 Forms) for Unit 1 Refueling Outage 22 (1RF22) CP-202200273, Third Supplement to License Amendment Request (LAR) 20-006 Application to Revise Technical Specifications to Adopt Risk Informed Completion Times, TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative2022-07-20020 July 2022 Third Supplement to License Amendment Request (LAR) 20-006 Application to Revise Technical Specifications to Adopt Risk Informed Completion Times, TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative CP-202200276, (CPNPP) - Relief Request Application P-1, Inservice Testing (IST)2022-07-20020 July 2022 (CPNPP) - Relief Request Application P-1, Inservice Testing (IST) CP-202200247, (CPNPP) - 10CFR50.59 Evaluation Summary Report 023, 10CFR72.48 Evaluation Summary Report 008 and Commitment Material Change Evaluation Report 0172022-06-30030 June 2022 (CPNPP) - 10CFR50.59 Evaluation Summary Report 023, 10CFR72.48 Evaluation Summary Report 008 and Commitment Material Change Evaluation Report 017 2024-01-31
[Table view] |
Text
II Jack C. Hicks Manager, Regulatory Affairs Comanche Peak Nuclear Power Plant (Vistra Operations Company LLC)
Luminant P .0. Box 1002 6322 North FM 56 Glen Rose, TX 76043 T 254.897.6725 CP-202200200 TXX-22041 May 5, 2022 U. S. Nuclear Regulatory Commission Ref 10CFR50.55a ATTN: Document Control Desk TS 5.6.9 Washington, DC 20555-0001
Subject:
Comanche Peak Nuclear Power Plant (CPNPP)
Docket No. 50-446 Unit 2 Refueling Outage 19 (2RF19) Steam Generator 180 Day Report
Dear Sir or Madam:
Vistra Operations Company LLC ("Vistra OpCo") hereby submits the Comanche Peak Nuclear Power Plant (CPNPP) Unit 2 steam generator tube inspection report for 2RF19 as required by Technical Specification 5.6.9.
This communication contains no new commitments regarding CPNPP Unit 2.
Should you have any questions, please contact Jim Barnette at (254) 897-5866 or James.barnette@luminant.com.
Sincerely, JakC.llicks
Attachment:
180 Day Steam Generator Tube Inspection Report - Comanche Peak Unit 2 Cycle 19 c (email) - Scott Morris, Region IV [Scott.Morris@nrc.gov]
Dennis Galvin, NRR [Dennis.Galvin@nrc.gov]
John Ellegood, Senior Resident Inspector, CPNPP Uohn.Ellegood@nrc.gov]
Neil Day, Resident Inspector, CPNPP [Neil.Day@nrc.gov]
Attachment to TXX-22041 Page 1 of 18 180 Day Steam Generator Tube Inspection Report -
Comanche Peak Unit 2 Cycle 19 DESIGN AND OPERATING PARAMETERS Steam Generator Design and Operating Parameters SG Model/ Tube Material/# SGs per unit W-D5/ Alloy 600TT / 4
- of tubes per SG / Nominal Tube Dia. / tube 4,570 / 0.750 in/ 0.043 in thickness Broached Quatrefoil and Drilled Hole/
Support Plate Style/ Material Stainless Steel Last Inspection Date December 2019 (2RF17)
EFPM since the last inspection 31.5 Total cumulative SG EFPY 25.5 Mode 4 initial entry November 12, 2021 Observed P/S Leak Rate since the last No leakage observed inspection and how it trended with time 618 degrees F (This value was the highest and Nominal indicated value of Thot during Cycle will be used as the conservative average of the 19 at full power four loops.)
Potential high residual stress tubes in row 1 Degradation mechanism sub population and 2 U-bend regions.
Deviations from SGMP guidelines since the None last inspection Steam Generator Schematic Schematic is attached. See next page.
Attachment to TXX-22041 Page 2 of 18
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Attachment to TXX-22041 Page 3 of 18
- a. SCOPE OF INSPECTIONS PERFORMED ON EACH SG The primary side inspection included all tubes in all SGs, consisting of 100% full length bobbin, 100%
+POINT probe inspection of the hot leg top of tubesheet, and additional inspections of dents/dings, portions of the cold leg tubesheet, and special interest. The secondary side inspection included foreign object search and removal (FOSAR) after sludge lancing, Waterbox inspections, and an upper tube bundle inspection in SG 3.
- 100% Bobbin full length inspection of tubes in all four SGs (straight legs only in Rows 1 and 2).
- 100% Bobbin inspection of tubes identified as potentially having high residual stress.
- 100% Bobbin inspection of all prior indications of degradation and/or historical PLPs.
- 100% +POINT probe inspection of HL TTS from +3.00 inches/-15.00 inches (H* distance= 14.01 inches).
- +POINT probe inspection HL TTS +3.00 inches/-15.00 inches of 100% of the peripheral tubes, including the open lane and T-slot, 2 pitches into the bundle. Data acquisition shall continue as required to assure that the required distance below the tubesheet (15.00 inches) is adequately covered. (this is covered by the item above, but is retained for information)
- +POINT probe inspection CL TTS +3.00 inches/-3.00 inches of 100% of the peripheral tubes, including the open lane and T-slot, 2 pitches into the bundle.
- +POINT inspection of all HL and CL TSP locations and CL TTS +3 inches/-3 inches in tubes identified as potentially having high residual stress.
- 100% +POINT probe inspection of the U-bends in Rows 1 and 2 (same tubes as bobbin program).
- 100% +POINT probe inspection of all dents/dings> 5.0 volts on HL and U-bend.
- 100% +POINT probe inspection of all dents/dings> 2.0 volts at and below TSP C7.
- 100% +POINT probe inspection of dents> 2.0 volts at H3 TSP.
- 100% +POINT inspection of tubes expanded at Preheater Baffle Plate (PBP) B.
- 100% +POINT probe inspection of tubes expanded at PBP D.
- +POINT probe inspection of legacy loose parts and PLPs.
- +POINT probe inspection of all I-code bobbin indications that are not resolved after history review.
Attachment to TXX-22041 Page 4 of 18
- b. THE NONDESTRUCTIVE EXAMINATION TECHNIQUES UTILIZED FOR TUBES WITH INCREASED DEGRADATION SUSCEPTIBILITY
+Point/Rotating probe (RPC) was utilized for all tubes with increased degradation susceptibility as described in the scope of inspections.
- c. FOR EACH DEGRADATION MECHANISM FOUND c.1 NONDESTRUCTIVE EXAMINATION TECHNIQUES UTILIZED Degradation Mechanism Technique Used Tube wear at A VBs Bobbin and RPC Tube wear at preheater baffle plates Bobbin and RPC Tube wear at quatrefoil tube support plates Bobbin and RPC Tube wear due to foreign object Bobbin and RPC Axial ODSCC at dents/dings Bobbin and RPC
Attachment to TXX-22041 Page 5 of 18 c.2 LOCATION, ORIENTATION, MEASURED SIZE, AND VOLTAGE RESPONSES Wear Indication at Support Structures SG1 SG2 SG3 SG4 Limiting/Total
<20%TW 135 47 54 342 279 Axial Cir. Cir.
SG Row Col Volts Ind %TW Location Inch Probe Length Width Degrees 1 35 16 0.99 WEAR 20 AV2 -0.35 Bobbin 1 45 82 0.97 WEAR 20 AV4 -0.03 Bobbin 1 45 87 1.12 WEAR 20 AV1 -0.38 Bobbin 1 38 89 0.95 WEAR 20 AVl -0.35 Bobbin 1 38 90 0.94 WEAR 20 AV4 -0.03 Bobbin 1 41 93 1.1 WEAR 20 AV3 -0.32 Bobbin 1 23 108 0.91 WEAR 20 AV2 -0.06 Bobbin 1 32 12 1.16 WEAR 21 AV2 0.00 Bobbin 1 40 20 1.12 WEAR 21 AV4 0.03 Bobbin 1 40 30 0.96 WEAR 21 AV4 -0.06 Bobbin 1 40 31 1.19 WEAR 21 AV4 -0.03 Bobbin 1 40 60 1.38 WEAR 21 AV4 0.15 Bobbin 1 39 78 1.15 WEAR 21 AV4 0.35 Bobbin 1 45 79 1.08 WEAR 21 AV3 0.06 Bobbin 1 38 89 1.08 WEAR 21 AV4 -0.34 Bobbin 1 37 99 1.07 WEAR 21 AV3 0.18 Bobbin 1 38 99 1.09 WEAR 21 AVl 0.03 Bobbin 1 38 99 1.08 WEAR 21 AV2 0.00 Bobbin 1 31 103 1.08 WEAR 21 AV3 0.09 Bobbin 1 41 20 1.23 WEAR 22 AV3 -0.06 Bobbin
Attachment to TXX-22041 Page 6 of 18 Axial Cir. Cir.
SG Row Col Volts Ind %TW Location Inch Probe Length Width Degrees 1 40 31 0.99 WEAR 22 AV2 0.00 Bobbin 1 40 31 1.3 WEAR 22 AV3 0.00 Bobbin 1 43 77 1.15 WEAR 22 AV4 0.06 Bobbin 1 42 88 1.09 WEAR 22 AV3 -0.09 Bobbin 1 35 100 1.2 WEAR 22 AV3 0.12 Bobbin 1 28 105 1.15 WEAR 22 AV2 0.03 Bobbin 1 30 11 1.39 WEAR 23 AV3 0.00 Bobbin 1 31 12 1.45 WEAR 23 AV3 0.00 Bobbin 1 40 19 1.35 WEAR 23 AV2 0.36 Bobbin 1 43 86 1.39 WEAR 23 AV2 0.17 Bobbin 1 39 89 1.3 WEAR 23 AV2 -0.09 Bobbin 1 41 95 1.34 WEAR 23 AV3 0.32 Bobbin 1 35 101 1.27 WEAR 23 AV4 0.00 Bobbin 1 34 102 1.2 WEAR 23 AVl 0.03 Bobbin 1 36 16 1.62 WEAR 24 AV3 -0.31 Bobbin 1 40 30 1.34 WEAR 24 AV3 -0.11 Bobbin 1 40 45 1.46 WEAR 24 AV2 -0.03 Bobbin 1 49 56 1.41 WEAR 24 AV4 -0.03 Bobbin 1 45 84 1.42 WEAR 24 AV3 0.12 Bobbin 1 39 17 1.44 WEAR 25 AV3 0.00 Bobbin 1 41 20 1.63 WEAR 25 AV2 0.36 Bobbin 1 30 56 1.66 WEAR 25 AV2 -0.25 Bobbin 1 45 79 1.54 WEAR 25 AV2 0.33 Bobbin 1 43 87 1.47 WEAR 25 AV3 -0.03 Bobbin 1 41 88 1.64 WEAR 25 AV2 -0.33 Bobbin 1 46 89 1.55 WEAR 25 AV2 -0.06 Bobbin
Attachment to TXX-22041 Page 7 of 18 Axial Cir. Cir.
SG Row Col Volts Ind %TW Location Inch Probe Length Width Degrees 1 39 91 1.46 WEAR 25 AV4 0.00 Bobbin 1 34 102 1.44 WEAR 25 AV2 0.03 Bobbin 1 30 12 1.62 WEAR 26 AV2 0.00 Bobbin 1 37 16 1.96 WEAR 26 AV2 -0.32 Bobbin 1 40 20 1.74 WEAR 26 AV3 0.00 Bobbin 1 40 30 1.59 WEAR 26 AV2 0.00 Bobbin 1 40 43 1.69 WEAR 26 AV4 0.15 Bobbin 1 45 84 1.72 WEAR 26 AV2 0.06 Bobbin 1 38 99 1.77 WEAR 26 AV3 0.03 Bobbin 1 35 101 1.75 WEAR 26 AV2 0.15 Bobbin 1 43 81 1.86 WEAR 27 AV2 -0.06 Bobbin 1 43 87 1.9 WEAR 27 AV2 -0.06 Bobbin 1 46 89 1.99 WEAR 27 AV4 -0.09 Bobbin 1 43 81 2.11 WEAR 28 AV3 -0.38 Bobbin 1 45 87 1.97 WEAR 28 AV3 -0.09 Bobbin 1 46 31 2.24 WEAR 29 AV4 0.19 Bobbin 1 45 79 2.25 WEAR 29 AV4 -0.09 Bobbin 1 34 102 2.14 WEAR 29 AV4 0.03 Bobbin 1 39 17 2.26 WEAR 30 AV2 -0.12 Bobbin 1 39 20 2.4 WEAR 30 AV2 0.00 Bobbin 1 46 83 2.37 WEAR 30 AV2 0.09 Bobbin 1 34 13 2.77 WEAR 31 AV2 0.00 Bobbin 1 46 31 2.58 WEAR 31 AV2 0.08 Bobbin 1 45 84 2.76 WEAR 31 AV4 0.15 Bobbin 1 38 89 2.73 WEAR 31 AV2 -0.42 Bobbin 1 41 94 2.6 WEAR 31 AV2 -0.03 Bobbin
Attachment to TXX-22041 Page 8 of 18 Axial Cir. Cir.
SG Row Col Volts Ind %TW Location Inch Probe Length Width Degrees 1 33 102 2.68 WEAR 31 AV2 0.03 Bobbin 1 44 25 2.83 WEAR 32 AV2 0.00 Bobbin 1 45 26 2.9 WEAR 32 AV2 0.00 Bobbin 1 45 83 2.98 WEAR 32 AV2 0.09 Bobbin 1 38 16 3.34 WEAR 33 AV2 0.00 Bobbin 1 37 17 3.4 WEAR 33 AV2 0.03 Bobbin 1 41 90 3.25 WEAR 33 AV2 0.03 Bobbin 1 42 94 3.08 WEAR 33 AV2 -0.12 Bobbin 1 36 99 3.16 WEAR 33 AV3 0.18 Bobbin 1 40 43 4.21 WEAR 36 AV2 -0.15 Bobbin 1 40 20 4.85 WEAR 38 AV2 -0.08 Bobbin 1 40 43 5.44 WEAR 39 AV3 -0.38 Bobbin 1 1 69 0.88 SAi 62 0.19 50.8 H3 17.50 +Point 2 30 11 0.93 WEAR 20 AV3 0.23 Bobbin 2 40 86 1.2 WEAR 20 AV2 0.00 Bobbin 2 34 13 1.13 WEAR 22 AV3 -0.03 Bobbin 2 35 97 1.18 WEAR 22 AV2 0.00 Bobbin 2 40 29 1.62 WEAR 23 AV3 0.00 Bobbin 2 44 89 1.38 WEAR 23 AV3 -0.03 Bobbin 2 48 69 1.53 WEAR 24 AV4 0.13 Bobbin 2 34 13 2.07 WEAR 29 AV2 -0.03 Bobbin 2 44 89 2.44 WEAR 30 AV2 -0.03 Bobbin 2 36 99 2.8 WEAR 33 AV2 0.00 Bobbin 2 6 1 0.15 VOL 16 0.21 0.41 63 Cl 0.56 +Point 2 6 2 0.14 VOL 16 0.21 0.39 60 Cl 0.85 +Point 2 4 114 0.21 VOL 21 0.18 0.39 60 C4 0.44 +Point
Attachment to TXX-22041 Page 9 of 18 Axial Cir. Cir.
SG Row Col Volts Ind %TW Location Inch Probe Length Width Degrees 2 3 114 0.32 VOL 28 0.24 0.46 71 C4 0.33 +Point 2 6 2 0.37 VOL 31 0.34 0.44 68 Cl 0.42 +Point 3 41 85 0.87 WEAR 20 AV3 -0.06 Bobbin 3 49 42 0.89 WEAR 20 AV4 0.00 Bobbin 3 24 107 1.14 WEAR 21 AV2 -0.46 Bobbin 3 33 103 1.2 WEAR 21 AVl 0.03 Bobbin 3 33 87 1.14 WEAR 22 AV4 -0.12 Bobbin 3 41 87 1.16 WEAR 22 AV2 -0.36 Bobbin 3 30 105 1.48 WEAR 23 AV2 -0.36 Bobbin 3 41 87 1.55 WEAR 25 AV3 -0.32 Bobbin 3 32 12 1.95 WEAR 27 AV2 0.00 Bobbin 3 38 98 2.31 WEAR 28 AV2 -0.45 Bobbin 3 43 82 1.99 WEAR 28 AV4 0.00 Bobbin 3 34 101 2.96 WEAR 31 AV2 -0.48 Bobbin 3 33 103 3.27 WEAR 33 AV3 0.00 Bobbin 3 43 82 2.91 WEAR 33 AV2 -0.39 Bobbin 3 43 82 3.13 WEAR 34 AV3 -0.38 Bobbin 3 6 79 2.78 SVI 43 0.42 0.28 43 Cll 13.55 +Point 3 40 48 0.34 SVI 33 0.18 0.35 54 C2 5.66 +Point 3 40 49 0.14 SVI 18 0.35 0.49 75 C2 5.59 +Point 3 21 so 0.84 VOL 12 0.12 0.21 32 C2 0.65 +Point 4 34 97 0.97 WEAR 20 AV2 0.00 Bobbin 4 35 14 0.92 WEAR 21 AVl 0.06 Bobbin 4 27 so 1.19 WEAR 21 AV4 0.37 Bobbin 4 38 71 1.29 WEAR 21 AV2 -0.05 Bobbin 4 35 82 1.37 WEAR 22 AV2 -0.03 Bobbin
Attachment to TXX-22041 Page 10 of 18 Axial Cir. Cir.
SG Row Col Volts Ind %TW Location Inch Probe Length Width Degrees 4 37 84 1.45 WEAR 23 AV2 0.03 Bobbin 4 37 84 1.66 WEAR 25 AV3 0.00 Bobbin 4 44 43 0.54 VOL 14 0.14 0.29 45 C2 2.27 +Point 4 44 43 0.64 VOL 15 0.13 0.23 35 C2 2.28 +Point 4 34 77 0.81 VOL 15 0.11 0.34 52 C2 0.50 +Point 4 26 69 1.12 VOL 21 0.19 0.40 62 C2 1.29 +Point 4 32 71 1.62 VOL 26 0.17 0.36 55 C2 0.53 +Point 4 44 44 1.47 VOL 27 0.22 0.32 49 C2 2.11 +Point 4 44 44 1.66 VOL 30 0.21 0.39 60 C2 2.03 +Point 4 44 44 1.98 VOL 33 0.16 0.40 62 C2 2.29 +Point 4 44 44 2.1 VOL 34 0.22 0.36 55 C2 2.29 +Point
Attachment to TXX-22041 Page 11 of 18 c.3 CONDITION MONITORING ASSESSMENT AND RESULTS, MARGIN TO THE TUBE INTEGRITY PERFORMANCE CRITERIA, AND COMPARISON WITH THE MARGIN PREDICTED TO EXIST AT THE INSPECTION BY THE PREVIOUS FORWARD-LOOKING TUBE INTEGRITY ASSESSMENT The condition monitoring results for 2RF19 are presented in the table below for all detected degradation mechanisms. Any existing degradation mechanisms not found in the table below were not detected at 2RF19 and meet condition monitoring for structural and leakage integrity. Wear at drilled holes in the PBP and FOB were sized with the Pancake coil (ETSS 96911.1). Wear at broached holes in the TSPs were sized with the +POINT coil (ETSS 96910.1).
CPNPP 2RF19 Condition Monitoring Summary for Limiting Flaw 2RF19 Mechanism SG Row Col IND Loe CM Limiting Flaw Limit 66.8% TW, 0.5-inch AVB Wear 1 40 43 PCT AV3 39%TW flaw 96004.3 46.4% TW, 0.75-inch PBP Wear 1 49 56 WAR cs 17%TW flaw 96911.1 54.3% TW, 1.125-inch TSP Wear 1 47 46 WAR C7 14%TW flaw 96910.1 70.8% TW, 0.45-inch Foreign 3 6 79 SVI Cll 43%TW flaw 10908.5 Object Wear 66.2% TW for 0.25-inch 3 40 48 SVI C2 34%TW flaw 21998.1 Axial ODSCC at 67.8% TW for 0.25-inch 1 1 69 SAi H3+17.5 62%TW flaw 128432 Freespan Dings For volumetric wear flaws with pressure-only loading condition, tu be burst and ligament tearing (i.e., pop-through) are coincident, therefore, satisfaction of the tube burst criteria at 3~PNo also satisfies the accident induced leakage performance criteria (AILPC} at steam line break differential pressure.
Therefore, for AVB, PBP, TSP and Foreign Object wear, the SG structural and leakage performance criteria are satisfied for condition monitoring.
For the limiting sec flaws, the burst and ligament tearing are greater than the minimum burst and leakage integrity limits of 3909 psi and 2560 psi, respectively. This includes material property, burst relation, and NDE uncertainties at 0.95 probability and 50% confidence (95/50). Therefore, condition monitoring for sec mechanisms has been demonstrated.
SG Integrity Assessment Guidelines require condition monitoring results from the current inspection be compared to the OA from the previous inspection. This comparison identifies whether the underlying assumptions, input parameters, or methodology for performing OAs are conservative or require alteration prior to performing the next OA. Failure to meet CM requirements means that the projections of the prior OA were not conservative and that necessary corrective actions are to be identified. Even when CM requirements are met, this comparative review may identify adjustments to the OA inputs or assumptions.
Attachment to TXX-22041 Page 12 of 18 For wear mechanisms, a comparison of the previous OA to the 2RF19 inspection results is presented in the below table. Note for FOW, no foreign objects remain within the vicinity of the affected tubes, so no OA projection is provided.
For sec mechanisms, the previous OA evaluated the mechanisms below and demonstrated structural and leakage integrity to 2RF19. Existing and potential mechanisms were considered, with the potential mechanisms being selected based on the frequency of their historical occurrence in the Alloy 600TT fleet:
Existing Degradation Mechanisms (Prior to 2RF19)
- Circumferential PWSCC at BLG/OXP locations within the HL tubesheet
- Circumferential PWSCC at HL Tubesheet Expansion Transitions Previously Considered Potential Degradation Mechanisms
- Axial ODSCC at tube support plates for high stress tubes
- Circumferential ODSCC at top of tubesheet expansion transitions
- Axial PWSCC at top of tubesheet expansion transitions
- Axial ODSCC at the top of tubesheet expansion transitions and sludge pile None of these mechanisms were detected at 2RF19. For the detected sec mechanism (Axial ODSCC at Frees pan Dings), only two tubes had previously been affected by this mechanism in the A600TT industry.
An OA for axial ODSCC at freespan dings will now be included as an existing degradation mechanism. As part of the benchmarking efforts for this mechanism, a simulation was performed for the previous inspection period, 2RF16-2RF19, and it has been determined that structural and leakage integrity were predicted to be demonstrated throughout the 3-cycles.
Attachment to TXX-22041 Page 13 of 18 Comparison of Previous Wear OA Projections to 2RF19 Results Mechanism 2RF18 Projection {% TW) 2RF19 Limiting Flaw {% TW)
AVB Wear- Existing 55.3 39 AVB Wear- New 38.4 25 PBP Wear - Existing 42.6 17 PBP Wear - New 53.6 16 TSP Wear - Existing 51.1 14 TSP Wear - New 57.6 14 Based on the inspection data and the condition monitoring assessment, no tubes exhibited degradation exceeding the condition monitoring limits set forth in the 2RF19 DA. No tubes required in situ pressure or leak testing to demonstrate structural and leakage integrity. Therefore, the SG performance criteria for structural and leakage integrity were satisfied for all degradation mechanisms for the preceding CPNPP Unit 2 SG operating interval.
c.4 TUBES PLUGGED OR REPAIRED DURING THE INSPECTION OUTAGE .
- 2RF19 Plugging and Stabilization List SG Row Col Ind Location Plugging Basis Stabilizer?
1 1 69 SAi H3 Axial ODSCC No 2 1 95 - - High Stress Tube No 2 1 55 - - High Stress Tube No 3 6 79 SVI C11 Preventative No 3 40 48 SVI C2 Preventative Yes 3 40 49 SVI C2 Preventative Yes
Attachment to TXX-22041 Page 14 of 18
- d. ANALYSIS
SUMMARY
OF THE TUBE INTEGRITY CONDITIONS PREDICTED TO EXIST AT THE NEXT SCHEDULED INSPECTION The Operational Assessment for tube wear mechanisms was performed using conservative methods to project EOC flaw depths for each active mechanism. For detected wear, this includes burst relation, material property and NDE measurement uncertainties. For undetected wear, this includes burst relation and material property uncertainties. It was concluded that the projected EOC depth of the largest detected and assumed undetected flaw will remain below the calculated structural limits with sufficient margin at 2RF22. The limiting wear degradation mechanism is AVB wear, and it is predicted that the worst-case flaw would be no greater than SS.4%TW at the next planned inspection at 2RF22 (4.35 EFPY). This projection is less than the end of cycle structural limit of 69.4% TW. For volumetric flaws ligament tearing is coincident to burst. Therefore, since structural integrity against tube burst at 3*~PN0 was demonstrated, leakage integrity is expected to be maintained to at least 2RF22 as well.
The Operational Assessment for sec mechanisms was performed with assumed undetected flaws for each existing degradation mechanism. Based on the detection the results of the 2RF19 inspection, axial ODSCC at dents/dings is now an existing degradation mechanism. The remaining existing degradation mechanisms are circumferential PWSCC at bulge/over-expansions and at the hot leg expansion/transition.
Fully probabilistic methods were used for the OA calculations with an acceptance criterion of 5.0% for POB, POL, minimum burst pressure requirement and the plant's accident induced leak rate limit. The evaluations include uncertainties associated with burst relation and tube material properties. Each
- evaluation assumed undetected flaws at 2RF19, and the operating interval until the next planned inspection. Accepted industry methods were used to develop the POD functions, undetected flaw populations, and growth rates for each SCC mechanism evaluated (typical default growth rates used).
Benchmarking ofthe fully probabilistic OA methods for existing degradation mechanisms was completed by comparing OA simulation results for prior outages with actual detection results. The predicted detection depths and quantities were compared to actual CPNPP Unit 2 inspection results. It was found that the number of detected indications is well characterized by the model results. Additionally, the measured flaw depths and lengths are reasonably represented by the predicted distributions (including the peak flaw versus the worst-case prediction distribution). Tnis benchmarking developed confidence that the simulation process will accurately and conservatively predict future SG conditions. For each SCC mechanism, the POB and POL were calculated to be below the 5.0% criterion which demonstrates structural and leakage integrity until the next planned inspections (2RF20 for axial ODSCC at dents/dings and 2RF22 for circumferential PWSCC at HL tubesheet). OA calculations were performed for axial ODSCC at dents/dings and circumferential PWSCC at HL tubesheet for 2.9 EFPY and 4.35 EFPY, respectively.
When combining predicted leakages from the OA calculations, and in considering CPNPP Unit 2 requirements associated with the H* alternate repair criteria, it was determined that an administrative leakage limit would not be needed for Cycle 20. This should be re-evaluated after the inspection at 2RF20.
Two SG channel head cladding anomalies are being tracked at CPNPP Unit 2 and were visually observed during 2RF19. The anomalies did not appear to change from the prior inspection. A corrosion rate evaluation has been performed for the larger of the two flaws. There is significant margin between the estimated flaw depth and the ASME Code allowable and no repairs are required.
Attachment to TXX-22041 Page 15 of 18 A total of 16 foreign objects remained in secondary side of the SGs following 2RF19. All of these objects were small parts and demonstrated by bounding calculations through tube wear projections to not adversely affect tube integrity until at least 2RF22.
The CM and OA for the CPNPP Unit 2 SGs at the 2RF19 outage follows the requirements of the SG Integrity Assessment Guidelines} and complies with requirements of NEl-97-06. It has been shown that all existing degradation mechanisms will maintain structural and leakage integrity until the next planned inspection, for each existing degradation mechanism. Potential mechanisms were also considered and are not expected to challenge the structural or leakage integrity performance criteria during the next operating interval, 2RF19-2RF22.
The forward-looking assessments demonstrate structural and leakage integrity until the next planned inspections (2RF20 for axial ODSCC at dents/dings and 2RF22 for the remaining degradation mechanisms}.
- e. NUMBER AND PERCENTAGE OF TUBES PLUGGED OR REPAIRED TO DATE, AND THE EFFECTIVE PLUGGING PERCENTAGE IN EACH SG The total number of plugged tubes in each SG is summarized in the table below.
SG #Tubes 2RF19 # Piugged Total # Plugged % Plugging 1 4,570 1 24 0.53 2 4,570 2 35 0.77 3 4,570 3 24 0.53 4 4,570 0 19 0.42 Total 18,280 6 102 0.56
- f. SG SECONDARY-SIDE INSPECTION RESULTS Top of tubesheet sludge lancing with post-cleanliness inspection was performed in all SGs. The deposit removal amounts were 4.0 lbs, 4.5 lbs, 5.5 lbs, and 7.0 lbs in SGs 1, 2, 3, and 4, respectively.
Foreign object search and retrieval (FOSAR} inspections were performed at 2RF19. FOSAR and deposit inspections of the annulus/peripheral bundle, tubelane, and pre-defined in-bundle columns in all SGs was performed. Upper tube bundle visual inspection (TSP P} was performed in SG3 in pre-defined columns. TSP P was found to be in acceptable condition, with the support plate and quatrefoils free of deposit. Limited tube scale was observed at TSP P.
Attachment to TXX-22041 Page 16 of18 A total of 32 objects were found during FOSAR and 16 were retrieved. A summary of the FOSAR and sludge lancing is provided int. All remaining foreign objects were Priority 3 items.
CPNPP 2RF19 Foreign Object Summary No. Description Row Col Metallic? Retrieved? L (In.) W (In.) H (In.) D (In.)
1001 Wire Bristle 49 79 y y 0.38 0.1 0.05 0.05 1002 Wire Bristle 24 9-10 y y 0.75 0.5 0.6 0.3 1003 Wire Bristle 6 1 y y 0.38 0.1 0.05 0.05 1004 Other - Wire Mesh 27-28 46-47 y y 0.2 0.2 0.1 -
1005 Other- Shim 28 46-47 y y 0.3125 0.3125 0.4 -
Material 1006 Sludge Rock 9 47-48 N N 0.3125 0.3125 0.4 -
1007 Scale 40-41 55-56 N N 0.3125 0.1 0.1 -
1008 Sludge Rock 22-23 55-56 N N 0.3125 0.2 0.2 -
1009 Sludge Rock 43 50-51 N N 0.32 0.32 0.2 -
2001 Gasket Material 21 5-6 y y 0.625 0.25 0.125 -
2002 Wire Bristle 13-14 3-4 y y 0.75 - - 0.02 3001 Other - Gasket 25-26 7-8 y N 0.075 - - 0.02 Thread 3002 Other- Shim 21 64 y y 0.3 0.02 0.5 -
Material 3003 Other- Slag 41 20 y y 0.25 0.06 0.3 -
3004 Scale 20 12 N N 0.625 0.06 0.325 -
3005 Scale 47 32 y y 0.125 0.05 0.125 -
3006 Sludge Rock 31 82-83 N y 0.32 0.25 0.25 -
3007 Other- Shim 40 48-49 y N 0.4 0.2 0.4 -
Material 4001 Sludge Rock 30-31 10-11 N N 0.2 0.2 0.1 0.2 4002 Sludge Rock 42-43 63-64 N N 0.75 0.1 0.2 0.2 4003 Wire Bristle 8-9 80-81 y N 0.5 - - 0.01
Attachment to TXX-22041 Page 17 of 18 No. Description Row Col Metallic? Retrieved? L (In.) W (In.) H (In.) D (In.)
4004 Sludge Rock 44 23 N N 0.3 0.2 0.25 -
4005 Sludge Rock 17-18 6-7 N N 0.25 0.2 0.25 -
4006 Other- mesh 49-50 37 y y 0.625 0.625 0.2 -
4007 Wire Bristle 49-50 47 y y 0.5 - - 0.03 4008 Scale 48-49 52 y N 0.5 - - 0.1 4009 Scale 44 43-45 y N 2 0.0625 0.0625 -
4010 Other- Shim 25-26 45-46 y y 0.75 0.125 0.5 -
Material 4011 Sludge Rock 27-28 44-45 N N 0.4 0.15 0.2 -
4012 Wire Bristle 18 111- y y 0.75 - - 0.06 112 4013 Sludge Rock 9 19-20 N N 0.312 0.312 0.25 -
4014 Other- Mesh 44 43-44 y y 1 0.35 0.0625 -
Preheater and Waterbox inspections were performed in all SGs. The SG Waterbox was found to be in good condition with no relevant degradation identified. The condition of the preheater/feedwater inlet Waterbox components were found in good condition with no anomalous or degraded conditions reported in any of the SGs. As a result of the inspection findings, there were no immediate recommendations made regarding any actions that should be taken prior to restart of Comanche Peak Unit 2. There are no changes or planned changes to plant operations or chemistry programs that would affect the integrity of the Waterbox components until the next planned inspection.
- g. FOR UNIT 2, THE PRIMARY TO SECONDARY LEAKAGE RATE OBSERVED IN EACH SG (IF IT IS NOT PRACTICAL TO ASSIGN THE LEAKAGE TO AN INDIVIDUAL SG, THE ENTIRE PRIMARY TO SECONDARY LEAKAGE SHOULD BE CONSERVATIVELY ASSUMED TO BE FROM ONE SG}
DURING THE CYCLE PRECEDING THE INSPECTION WHICH IS THE SUBJECT OF THE REPORT There was no SG primary-to-secondary side leakage present during Cycle 19.
Channel head cladding anomalies have been reported within SGl-CL and SG2-HL.
The cladding anomaly contained in SGl-CL is in the vicinity of the joint between the channel head shell and the tubesheet near the peripheral tube in Row 36 Column 100 on the cold leg side. The reported flaw is estimated to be approximately 5/8-inch long and approximately half as wide. Evidence of this cladding anomaly has been present as early as 2003.
Attachment to TXX-22041 Page 18 of 18 The cladding anomaly contained in SG2-HL is in the vicinity of the tube-to-tubesheet weld of Row 1 Column 109. The reported flaw is a small "pit-like" anomaly that is approximately 1/16-inch in diameter.
The discoloration is apparently caused by a small breech in the tubesheet cladding causing oxidation of the carbon steel base metal. This anomaly was first detected at 2RF16 and was not visible upon review of previous primary channel head visual inspections.
A re-inspection of these anomalies was performed during 2RF19 and showed no apparent change in size or character.
A 100% visual inspection oftube plugs in all four SGs has been performed from the primary side during CPNPP 2RF19. No anomalous conditions, such as a degraded tube plug or surrounding boron deposits, have been reported during performance of these visual inspections.
H. FOR UNIT 2, THE CALCULATED ACCIDENT INDUCED LEAKAGE RATE FROM THE PORTION OF THE TUBES BELOW 14.01 INCHES FROM THE TOP OF THE TUBESHEET FOR THE MOST LIMITING ACCIDENT IN THE MOST LIMITING SG. IN ADDITION, IF THE CALCULATED ACCIDENT INDUCED LEAKAGE RATE FROM THE MOST LIMITING ACCIDENT IS LESS THAN 3.16 TIMES THE MAXIMUM OPERATIONAL PRIMARY TO SECONDARY LEAKAGE RATE, THE REPORT SHOULD DESCRIBE HOW IT WAS DETERMINED; For condition monitoring, primary-to-secondary side leakage attributable to the portion of tubing below the alternate repair criteria depth must be multiplied by a factor of 3.16 and added to the total leakage from any other source. This sum is then to be compared to the allowable accident induced leakage. There was no SG primary-to-secondary side leakage present during Cycle 19 on which to apply the H* leakage factor. Therefore, the regulatory requirements relative to the alternate repair criteria have been satisfied.
I. FOR UNIT 2, THE RESULTS OF MONITORING FOR TUBE AXIAL DISPLACEMENT (SLIPPAGE). IF SLIPPAGE IS DISCOVERED, THE IMPLICATIONS OF THE DISCOVERY AND CORRECTIVE ACTION SHALL BE PROVIDED.
The tube slippage monitoring was conducted as part of the SG tube inspection program. Tube slippage is detected through bobbin coil examination. During 2RF19, as part of the tube inspection program, 100%
of the tubes were tested with the bobbin probe. No slippage was detected in any of the tubes inspected.