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Category:Letter
MONTHYEARIR 05000413/20230042024-02-0202 February 2024 Integrated Inspection Report 05000413-2023004 and 05000414-2023004 ML24005A2512024-01-26026 January 2024 Exemption from Select Requirements of 10 CFR Part 73 - Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting ML23317A3462023-11-14014 November 2023 Duke Fleet - Correction Letter to License Amendment Nos. 312 & 340 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-554, Revision 1 IR 05000413/20230102023-10-11011 October 2023 NRC Inspection Report 05000413/2023010 and 05000414/2023010 ML23256A0882023-09-25025 September 2023 Issuance of Alternative to Steam Generator Welds ML23195A0782023-08-29029 August 2023 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-554, Revision 1 IR 05000413/20230052023-08-25025 August 2023 Updated Inspection Plan for Catawba Nuclear Station Units 1 and 2 (Report 05000413/2023005 and 05000414/2023005) ML23233A1692023-08-17017 August 2023 EN 56683 - Curtiss Wright, Interim Notification Report for PotentialPurt2l IR 05000413/20230022023-07-25025 July 2023 Integrated Inspection Report 05000413/2023002 and 05000414/2023002 ML23207A0762023-07-14014 July 2023 EN 56557 - Update to Part 21 Report Re Potential Defect with Trane External Auto/Stop Emergency Stop Relay Card Pn: XI2650728-06 ML23237A2672023-06-13013 June 2023 June 13, 2002 - Meeting Announcement - McGuire and Catawba Nuclear Stations 50-369, 50-370 and 50-413, 50-414 ML23159A0052023-06-0505 June 2023 56557-EN 56557 - Paragon - Redlined IR 05000413/20230012023-05-0505 May 2023 Integrated Inspection Report 05000413/2023001 and 05000414/2023001 ML23118A0762023-05-0101 May 2023 Approval for Use of Specific Provision of a Later Edition of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI IR 05000413/20230112023-04-25025 April 2023 Focused Engineering Inspection Report 05000413/2023011 and 05000414/2023011 ML23107A2542023-04-14014 April 2023 301 Examination Report Letter and Report (Merged) ML22332A4932023-03-10010 March 2023 William States Lee III 1 and 2 - Issuance of Amendments Regarding the Relocation of the Emergency Operations Facility IR 05000413/20220062023-03-0101 March 2023 Annual Assessment Letter for Catawba Nuclear Station, Units 1 and 2 (NRC Inspection Report 05000413/2022006 and 05000414/2022006) IR 05000413/20234012023-03-0101 March 2023 Security Baseline Inspection Report 05000413 2023401 and 05000414 2023401 IR 05000413/20233012023-02-17017 February 2023 Operator Licensing Examination Approval 05000413/2023301 and 05000414/2023301 IR 05000413/20220042023-01-31031 January 2023 Integrated Inspection Report 05000413/2022004 and 05000414/2022004 IR 05000413/20220112022-12-15015 December 2022 Biennial Problem Identification and Resolution Inspection Report 05000413/2022011 and 05000414/2022011 ML22356A0512022-12-14014 December 2022 Curtiss-Wright Nuclear Division, Letter Regarding Potential Efect in a Configuration of the 11/2 Inch Quick Disconnect Connector Cable Assemblies Supplied to Duke Energy (See Attached Spreadsheet) for a Total of 460 of Connectors Only Suppl ML22096A0032022-11-18018 November 2022 McGuire Nuclear Station and Shearon Harris Nuclear Power Plant Authorization of RA-19-0352 Regarding Use of Alternative for RPV Head Closure Stud Examinations IR 05000413/20224032022-11-17017 November 2022 Cyber Security Inspection Report 05000413/2022403 and 05000414/2022403 (Public) ML22256A2532022-11-14014 November 2022 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-541, Rev. 2 ML22319A0942022-11-10010 November 2022 EN 56219 - Flowserve. 10 CFR Part 21 Report 38878-8 Solenoid Valve at Duke, Catawba Flowserve Evaluation 105 IR 05000414/20220032022-10-31031 October 2022 Integrated Inspection Report 05000414/2022003 and 05000414/2022003 IR 05000413/20224022022-10-28028 October 2022 Security Baseline Inspection Report 05000413 2022402 and 05000414 2022402 ML22297A2642022-10-25025 October 2022 Project Manager Assignment ML22276A2492022-10-25025 October 2022 Completion of License Renewal Commitment No. 10, Aging Management of Environmentally Assisted Fatigue ML22303A0052022-10-24024 October 2022 EN 56178 - Tioga Final. LTR-TP-22-29 2021 10CFR Part 21 Improper Notification of NRC ML22258A0302022-09-15015 September 2022 Evacuation Time Estimate Reports ML22242A0022022-09-12012 September 2022 Issuance of Amendments to Adopt TSTF 569, Revision 2, Revise Response Time Testing Definition ML22231B1362022-09-0101 September 2022 Review of the Draft Environmental Assessment and Findings of No Significant Impact for Catawba Nuclear Station, H.B. Robinson Steam Electric Plant, and Oconee Nuclear Station Independent Spent Fuel Storage Installation Decommissioning Fundi ML22303A0042022-08-31031 August 2022 Final Report Notification Pursuant to 10 CFR Part 21.21, Regarding Supply of 6 NPS Sch. 40 Seamless Stainless-Steel Pipe; Manufacturer: Maxim Tubes Company Pvt. Ltd.; Heat No: N200309AW01, SR No: 7; 9 Pcs; 180 Feet Total Procured as Unquali IR 05000413/20220052022-08-26026 August 2022 Updated Inspection Plan for Catawba Nuclear Station, Units 1 and 2 - NRC Inspection Report 05000413/2022005 and 05000414/2022005 ML22217A0792022-08-0303 August 2022 301, Corporate Notification Letter (210-day Ltr) IR 05000413/20220022022-07-29029 July 2022 Integrated Inspection Report 05000413/2022002 and 05000414/2022002 IR 07200045/20220012022-07-26026 July 2022 Operation of an Independent Spent Fuel Storage Installation Report 07200045/2022001 ML22215A2502022-07-25025 July 2022 EN 55960 - Update - Curtiss Wright IR 05000413/20220102022-07-21021 July 2022 Design Basis Assurance Inspection (Programs) Inspection Report 05000413/2022010 and 05000414/2022010 ML22195A2432022-07-19019 July 2022 Request for Withholding Information from Public Disclosure Regarding Reactor Vessel Closure Head Repair Alternative ML22164A0362022-07-19019 July 2022 Mcguire Nuclear Station, Units 1 and 2; Issuance of Amendments to Revise the Conditional Exemption of the End-Of-Cycle Moderator Temperature Coefficient Measurement Methodology (EPID L-2021-LLA-0198) Public ML22199A2552022-07-0606 July 2022 Ds Catawba 2022 RQ Inspection Notification Letter ML22222A0092022-07-0101 July 2022 EN 55974 - Flowserve, Part 21 Report Re Solenoid Coil Failure of Model 38878-8 Solenoid Valve at Catawba Nuclear Station for Use on FWIV Actuator ML22175A0342022-06-28028 June 2022 Information Request for the Cyber-Security Baseline Inspection Notification to Perform Inspection 05000413/2022403 and 05000414/2022403 ML22046A0222022-06-14014 June 2022 Issuance of Amendments to Adopt TSTF-439, Eliminate Second Completion Times Limiting Time from Discovery of Failure to Meet an LCO ML22111A3572022-05-16016 May 2022 Letter Issuing Exemption to Catawba IR 05000414/20220012022-04-28028 April 2022 Integrated Inspection Report 05000413/ 2022001 and 05000414/2022001 2024-02-02
[Table view] Category:Meeting Summary
MONTHYEARML23118A2852023-05-0202 May 2023 Public Meeting Summary - 2022 Annual Assessment Meeting Regarding Catawba Nuclear Station, McGuire Nuclear and Oconee Nuclear Station ML22335A4012022-12-15015 December 2022 Summary of December 8, 2022, Public Meeting with Duke Energy Carolinas, LLC, Regarding Pre-Application Meeting to Discuss Proposed License Amendment Request to Revise TS 3.7.11 Control Room Area Chilled Water System (Cracws) ML22129A0062022-05-10010 May 2022 Summary of April 20, 2022, Meeting with Duke Energy Progress, LLC, to Discuss Proposed License Amendment Request to Revise Reactor Coolant System Pressure Isolation Valve Operational Leakage Surveillance Requirement Frequency (L-2022-LRM 00 ML22094A1112022-04-0404 April 2022 Public Meeting Summary 2021 Annual Assessment Meeting Catawba Dockets Nos. 50-413 and 50-414; McGuire No. 50-369 and 50-370; Oconee. 50-269, 50-270, and 50-287 ML21341A5542021-12-29029 December 2021 Summary of November 29, 2021, Meeting with Duke Energy Progress, LLC and Duke Energy Carolinas, LLC to Discuss a Planned License Amendment Request to Relocate ML21342A0902021-12-14014 December 2021 Summary of December 7, 2021, Public Meeting with Duke Energy Carolinas, LLC, Regarding Pre-Application Meeting to Discuss Reactor Vessel Closure Head Nozzle Repair for Catawba Nuclear Station, Unit 2 ML21236A2832021-09-22022 September 2021 Summary of August 30, 2021, Public Meeting with Duke Energy Carolinas, LLC, Regarding Pre-Application Meeting to Discuss Moderator Temperature Coefficient Methodology Revision ML21133A0042021-05-26026 May 2021 Summary of Conference Call Regarding the Spring 2021 Steam Generator Tube Inspections (Epid: L-2021-Nfo-0004) ML21116A0662021-04-22022 April 2021 C2R24 Relief Request Pre-Submittal Slides Call 2 ML21099A0932021-04-0909 April 2021 Public Meeting Summary - 2020 Annual Assessment Meeting Regarding Catawba, McGuire, and Oconee Nuclear Stations ML20141L4172020-05-20020 May 2020 EOC Public Meeting Summary ML19220A6702019-08-26026 August 2019 Summary of August 7, 2019, Meeting with Duke Energy Progress, LLC and Duke Energy Carolinas, LLC to Discuss a Proposed License Amendment Request for a Common Emergency Plan ML19087A0622019-04-11011 April 2019 Summary of March 25, 2019, Public Teleconference with Duke Energy to Discuss the Request for Additional Information Response Regarding the Proposed Alternative to the Depth Sizing Qualification Requirement (Duke Energy Fleet Relief Request ML18183A4502018-07-16016 July 2018 Summary of June 11, 2018, Licensing Meeting with Duke Energy to Discuss a Planned License Amendment Request to Remove Containment Valve Injection Water from Specified Containment Isolation Valves ML17293A0232018-05-0404 May 2018 Summary of 9/20/17, Meeting with Duke Energy to Discuss LAR to Extend Completion Time for an Inoperable Emergency Diesel Generator and Electrical Alignments for Shared Systems for Catawba and McGuire (CAC Nos. MF9667-74; Epids L-2017-LLA-02 ML18117A2212018-04-27027 April 2018 Summary of Public Meeting with Catawba Nuclear Station Concerning Annual Assessment of Units 1 and 2 for Period of January 01, 2017 - December 21, 2017 ML17107A0642017-04-17017 April 2017 Summary of Public Meeting with Catawba, Units 1 and 2 ML17089A2042017-04-0707 April 2017 Summary of January 25, 2017, Pre-Licensing Meeting with Duke Energy to Discuss Proposed License Amendment Request to Create a New Condition for Nuclear Service Water System TS 3.7.8 - Catawba Nuclear Station, Unit Nos. 1 and 2 (CAC MF8944-5 ML16264A1232016-10-12012 October 2016 September 14, 2016, Summary of Category 2 Public Meeting with Duke Energy Carolinas to Discuss Seismic Probabilistic Risk Assessments Associated with Implementation of Japan Lessons-Learned Near-Term Task Force R2.1, Seismic, for Catawba Nu ML16264A1022016-10-0505 October 2016 Summary of Pre-Licensing Meeting with Duke Energy to Discuss Proposed License Amendment Request to Extend Completion Time for an Inoperable Diesel Generator for Catawba Nuclear Station & McGuire Nuclear Stations (Cac. Nos. MF8102-MF8105) ML16116A3712016-05-17017 May 2016 Summary of Meeting with Duke Energy Carolinas, LLC, to Discuss Proposed Changes to the Technical Specification Bases for the Catawba Nuclear Station, Units 1 and 2 ML16081A3352016-03-17017 March 2016 Summary of Meeting with Public Concerning Annual Assessment of Catawba Nuclear Station, Units 1 and 2 ML16035A4802016-02-12012 February 2016 Jsc Meeting Summary Attachment ML15117A5812015-05-0606 May 2015 April 14, 2015, Summary of Public Meeting on Calculation of Risk for NFPA-805 Fire Areas Crediting Control Room Abandonment ML15106A0302015-04-15015 April 2015 Meeting Summary with Public to Discuss the Annual Assessment of Catawba Nuclear Station, Units 1 and 2 ML14126A6792014-05-0606 May 2014 Summary of Public Meeting with Catawba, Units 1 & 2 to Discuss Annual Assessment ML13312A9882013-11-0808 November 2013 Summary of Public Meeting with Duke Energy Carolinas, LLC, to Provide Opportunities to Discuss the Planned Fukushima-Related Modifications ML13225A2932013-08-12012 August 2013 7/23-24/2013, Summary of Meeting 2013 U.S. Nuclear Regulatory Commission (NRC) Initial Exam Writers' Workshop ML13127A0502013-05-20020 May 2013 Summary of April 18, 2013, Meeting with Duke Energy Concerning the National Fire Protection Association (NFPA) 805: Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants ML13127A1742013-05-0303 May 2013 4/29/2013 - Summary of Catawba 2012 EOC Meeting ML12261A2232012-09-17017 September 2012 September 11, 2012 - Summary of Category 1 Public Meeting Held in Atlanta, Ga ML12117A2512012-04-26026 April 2012 Meeting Summary with Catawba Nuclear Station to Discuss the Nrc'S Reactor Oversight Process (ROP) and the Nrc'S Annual Assessment of Plant Safety Performance for the Period of January 1, 2011, to December 31, 2011 ML1112308322011-05-0303 May 2011 End of Cycle Public Meeting Summary ML11097A0272011-04-14014 April 2011 Summary of Meeting with Duke Energy Carolinas, LLC, on Upcoming Submittal of License Amendments Regarding Implementation of National Fire Protection Association Standard 805, (TACs ME5767 & ME5768, Catawba 1 & 2 ME5769 & ME5770 Mcguire 1 & ML1034807072010-12-14014 December 2010 Public Meeting Summary - Duke Quality Assurance Program Discussion Meeting ML1030810242010-11-10010 November 2010 Summary of November 1, 2010, Meeting with Duke to Discuss Responses to Generic Letter (GL) 2004-02 (Tac Nos. MC4673, MC4674, MC4692, and MC4693) ML1023804682010-08-26026 August 2010 08/18/10 Summary of Meeting NRC Initial Exam Writer'S Workshop ML1020100072010-07-21021 July 2010 Summary of Telephone Conference Call Regarding the Fall 2007 Steam Generator (SG) Tube Inspections ML1019000622010-07-14014 July 2010 Summary of Telephone Conference Call with Duke Energy Carolinas, Llc., Regarding 2009 Steam Generator Tube Inspections Catawba, Unit 2 ML1011604522010-04-26026 April 2010 Summary of Public Meeting with Catawba Nuclear Station to Discuss Nrc'S Reactor Oversight Process and the Nrc'S Annual Assessment of Plant Safety Performance for the Period of January 1, 2009 - December 31, 2009 ML0926700202009-10-0707 October 2009 Summary of Conference Call with Duke Regarding Responses to Generic Letter (GL) 2004-02 ML0923803922009-08-26026 August 2009 08/11-12/2009-Summary of Meeting Re 2009 Us NRC Initial Exam Development Workshop ML0906404402009-01-28028 January 2009 Enclosure 6: Case Study 2: Catawba Emergency TS Change - Meeting Summary of the January 27 & 28 Meeting with Nrc/Tstf L-04-004, 11/24/2008 - Summary of Meeting to Discuss 11/21/2008 and 11/18/2008 Requests for Additional Information GL 2004-04, Potential Impact of Debris Blockage of Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors2008-12-0303 December 2008 11/24/2008 - Summary of Meeting to Discuss 11/21/2008 and 11/18/2008 Requests for Additional Information GL 2004-04, Potential Impact of Debris Blockage of Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors ML0833103972008-12-0303 December 2008 Summary of Meeting to Discuss 11/21/2008 and 11/18/2008 Requests for Additional Information GL 2004-04, Potential Impact of Debris Blockage of Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors ML0820604872008-08-0606 August 2008 Summary of Meeting to Discuss Transition from Duke'S Current Quality Assurance Program to American Society of Mechanical Engineers NQA-1-1994 ML0621305672006-08-0101 August 2006 Summary of 07/19 - 07/20/2006 Meeting - 2006 Initial Exam Development Workshop ML0601800062006-03-28028 March 2006 Meeting Summary, Reload Design and Safety Analysis Methodology ML0535503872005-12-19019 December 2005 Public Meeting Summary - Catawba Service Water Project Update - Catawba Nuclear Station - Docket Nos. 50-413, 50-414 ML0529103762005-10-25025 October 2005 9/19/05, Catawba, Units 1 and 2, Meeting Summary, Nuclear Service Water System 2023-05-02
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Text
May 26, 2021 Mr. Robert T. Simril Site Vice President Catawba Nuclear Station Duke Energy Carolinas, LLC 4800 Concord Road York, SC 29745
SUBJECT:
CATAWBA NUCLEAR STATION, UNIT 2 -
SUMMARY
OF CONFERENCE CALL REGARDING THE SPRING 2021 STEAM GENERATOR TUBE INSPECTIONS (EPID: L-2021-NFO-0004)
Dear Mr. Simril:
On April 12, 2021, the U.S. Nuclear Regulatory Commission staff in the Corrosion and Steam Generator Branch (NCSG), Office of Nuclear Reactor Regulation participated in a conference call with Duke Energy Carolinas, LLC, to discuss the ongoing steam generator (SG) tube inspection activities at Catawba Nuclear Station, Unit 2 during refueling outage 24.
The summary of the conference call is attached as an enclosure to this letter.
If you have any questions, please contact me at 301-415-1438 or via e-mail at Karen.Cotton@nrc.gov.
Sincerely,
/RA/
Karen Cotton-Gross, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-414
Enclosure:
Summary of Conference Call cc: Listserv
SUMMARY
OF CONFERENCE CALL CATAWBA NUCLEAR STATION, UNIT 2 SPRING 2021 STEAM GENERATOR TUBE INSPECTIONS DOCKET NO. 50-414 On April 12, 2021, the U.S. Nuclear Regulatory Commission staff in the Corrosion and Steam Generator Branch, Office of Nuclear Reactor Regulation participated in a conference call with Duke Energy Carolinas, LLC (the licensee), to discuss the ongoing steam generator (SG) tube inspection activities at Catawba Nuclear Station, Unit 2 (Catawba Unit 2) during refueling outage (RFO) 24.
Catawba Unit 2 has four Westinghouse Model D5 SGs, which are designated 2A through 2D.
Each SG has 4,570 thermally treated Alloy 600 tubes with a nominal outside diameter of 0.750 inches and a nominal wall thickness of 0.043 inches. The tubes are hydraulically expanded for the full depth of the tubesheet at each end. The tubes are supported by Type 405 stainless steel plates with quatrefoil-shaped broached holes. The U-bend region of the tubes in rows 1 through 9 was thermally treated after bending to reduce stress.
Information provided by the licensee during the conference call is summarized below:
No primary-to-secondary leakage was observed during the recently completed operating cycle.
Secondary side pressure tests were not performed during the outage.
No exceptions were taken to the industry guidelines.
Inspections were performed in all four SGs. The inspection scope included a 100 percent full length bobbin/array combination probe examination in all in-service tubes, except for the row 1 through 6 U-bends, which were inspected with an array probe.
The licensee stated that they performed the enhanced probe inspection method as described in recently NRC-approved Technical Specifications Task Force (TSTF)
Traveler TSTF-577, Revision 1, Revised Frequencies for Steam Generator Tube Inspections (Agencywide Documents Access and Management System Package Accession No. ML21099A086).
The licensee reported the following indications identified at the time of the call:
o 378 anti-vibration bar (AVB) wear indications in 233 tubes. The maximum depth was 36 percent through wall (TW), and the growth rate was 2.5 percent TW per effective full power year (EFPY) (0.95 probability at 50 percent confidence (95/50)).
o 17 broached tube support plate (TSP) wear indications in 17 tubes. The maximum depth was 34 percent TW, and the maximum growth rate was 3.2 percent TW/EFPY.
Enclosure
o 2 drilled TSP wear indications in 2 tubes. The maximum depth was 11 percent TW, and the growth rate was 0 percent TW/EFPY (95/50).
o 49 foreign object (FO) wear indications in 45 tubes. The maximum depth was 43 percent TW.
o 122 cracks below the H* depth in the tubesheet (Catawba Unit 2 has an alternate repair criteria amendment for indications below the H* depth).
At the time of the call, the licensee planned to plug 16 tubes, including 14 high stress tubes (preventatively plug) and 2 tubes due to FO wear (1 in SG 2B and 1 in SG 2D).
The licensee stated that after the 14 high stress tubes are plugged, there will be no known high stress tubes in service in any of the Catawba Unit 2 SGs.
No in situ pressure tests were scheduled or planned for the outage.
At the time of the call, visual inspections and foreign object search and retrieval (FOSAR) was performed in SGs 2A and 2D to characterize and remove loose parts.
The visual inspections and FOSAR were performed at the top of tubesheet, and a visual inspection was performed at the bottom TSP in the preheater on the cold leg. Four FOs were identified in SG 2A and only one FO was removed from SG 2A. The FO that was removed from SG 2A was a valve locking tab from a feedwater check valve failure discovered during RFO 23. The other three FOs were determined to be acceptable to be left in place. No FOs were identified in SG 2D. Visual Inspections and FOSAR was yet to be performed in SGs 2B and 2C.
FO wear was identified at an AVB wear indication, which is not typical, although there was no loose part detected during the outage.
All four SGs were chemically cleaned on the secondary side during the outage and a total of 5,375 pounds of deposits were removed. A visual inspection of the SG 2A upper most TSP was performed to access the effectiveness of the chemical cleaning. The licensee stated that the deposits at broaches were greatly improved (decreased) from the last inspection. At the time of the call, sludge lancing was performed in SGs 2A and 2D, and 67 and 76 pounds of sludge were removed from SGs 2A and 2D, respectively.
The licensee stated that the amount of sludge removed was roughly four times higher than usual due to the chemical cleaning. Sludge lancing in SGs 2B and 2C was yet to be performed.
The estimated completion date of the SG inspections was April 14, 2021.
ML21133A004 *Concurrence by Letter OFFICE NRR/DORL/LPLII-1/PM NRR/DORL/LPLII-1/LA NRR/DNRL/NCSG NAME KCotton KGoldstein SBloom*
DATE 05/25 /2021 05/13/2021 4/23/2021 OFFICE NRR/DORL/LPLII-1/BC NRR/DORL/LPLII-1/PM NAME MMarkley KCotton DATE 05/25/2021 05/26/2021