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| {{Adams|number = ML070800461}} | | {{Adams |
| | | number = ML070800461 |
| | | issue date = 03/21/2007 |
| | | title = IR 05000413-07-012, and IR 05000414-06-012, Duke Energy Carolinas, LLC, NRC Final Significance Determination and Closure of Unresolved Item - Report |
| | | author name = Moorman J |
| | | author affiliation = NRC/RGN-II/DRP/RPB1 |
| | | addressee name = Morris J |
| | | addressee affiliation = Duke Energy Carolinas, LLC, Duke Power Co |
| | | docket = 05000413, 05000414 |
| | | license number = NPF-035, NPF-052 |
| | | contact person = |
| | | document report number = IR-06-012, IR-07-012 |
| | | document type = Letter, Inspection Report |
| | | page count = 5 |
| | }} |
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| {{IR-Nav| site = 05000413 | year = 2007 | report number = 012 }} | | {{IR-Nav| site = 05000413 | year = 2007 | report number = 012 }} |
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| =Text= | | =Text= |
| {{#Wiki_filter: | | {{#Wiki_filter:rch 21, 2007 |
| [[Issue date::March 21, 2007]]
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| Duke Power Company LLC d/b/a Duke Energy Carolinas, LLC ATTN:Mr. J. R. MorrisSite Vice President Catawba Site4800 Concord Road York, SC 29745-9635
| | ==SUBJECT:== |
| | CATAWBA NUCLEAR STATION - NRC FINAL SIGNIFICANCE DETERMINATION AND CLOSURE OF UNRESOLVED ITEM - REPORT 05000413/2007012 AND 05000414/2006012 |
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| SUBJECT: CATAWBA NUCLEAR STATION - NRC FINAL SIGNIFICANCEDETERMINATION AND CLOSURE OF UNRESOLVED ITEM - REPORT 05000413/2007012 AND 05000414/2006012
| | ==Dear Mr. Morris:== |
| | On December 6, 2006, the U.S. Nuclear Regulatory Commission (NRC) completed a Special Inspection at your Catawba Nuclear Station Units 1 and 2 related to flooding vulnerabilities of the turbine building and some safety-related areas. The results of this inspection were documented in NRC Special Inspection Report 05000413/2006010 and 05000414/2006010. |
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| ==Dear Mr. Morris:==
| | This report contained Unresolved Item 05000413,414/2006010-01. |
| On December 6, 2006, the U.S. Nuclear Regulatory Commission (NRC) completed a SpecialInspection at your Catawba Nuclear Station Units 1 and 2 related to flooding vulnerabilities of the turbine building and some safety-related areas. The results of this inspection were documented in NRC Special Inspection Report 05000413/2006010 and 05000414/2006010.
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| | This unresolved item was opened to re-quantify the risk for a Green non-cited violation (NCV 05000413,414/2006004-02) issued on October 26, 2006. This NCV documented your failure to maintain appropriate design control to ensure that below-grade electrical conduits were properly sealed to prevent water intrusion into areas of the plant containing safety-related equipment. |
| | |
| | The NRC Special Inspection identified that additional flooding vulnerabilities were present from April 6, 2005 to May 22, 2006, and determined that a requantification of the station risk was appropriate. |
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| | The NRC staff has completed requantification of the station risk for this issue and determined that the change to core damage frequency that resulted from the additional water ingress paths was less than 1E-6 (Green) because of the low frequency of rainfall events with the potential to flood the susceptible areas. Therefore, the risk significance of this issue, which was dispositioned as Green NCV 05000413/2006004-02, 05000414/2006004-02, will not change. |
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| This report contained Unresolved Item 05000413,414/2006010-01. This unresolved item was opened to re-quantify the risk for a Green non-cited violation (NCV05000413,414/2006004-02) issued on October 26, 2006. This NCV documented your failure to maintain appropriate design control to ensure that below-grade electrical conduits were properly sealed to prevent water intrusion into areas of the plant containing safety-related equipment.
| | Thank you for your assistance in this matter. If you have any questions concerning this matter, please contact me at (404) 562-4647. |
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| The NRC Special Inspection identified that additional flooding vulnerabilities were present from April 6, 2005 to May 22, 2006, and determined that a requantification of the station risk was appropriate.The NRC staff has completed requantification of the station risk for this issue and determinedthat the change to core damage frequency that resulted from the additional water ingress paths was less than 1E-6 (Green) because of the low frequency of rainfall events with the potential to flood the susceptible areas. Therefore, the risk significance of this issue, which was dispositioned as Green NCV 05000413/2006004-02, 05000414/2006004-02, will not change. Thank you for your assistance in this matter. If you have any questions concerning this matter,please contact me at (404) 562-4647.
| | DPC 2 In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its enclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRCs document system (ADAMS). ADAMS is accessible from the NRC Web site at www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room). |
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| DPC2In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and itsenclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS). ADAMS is accessible from the NRC Web site at www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
| | Sincerely, |
| | /RA/ |
| | James H. Moorman, III, Chief Reactor Projects Branch 1 Division of Reactor Projects Docket Nos.: 50-413, 50-414 License Nos.: NPF-35, NPF-52 cc: (See page 3) |
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| Sincerely,/RA/ James H. Moorman, III, Chief Reactor Projects Branch 1 Division of Reactor ProjectsDocket Nos.:50-413, 50-414License Nos.:NPF-35, NPF-52cc: (See page 3)
| | _________________________ |
| DPC2In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and itsenclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS). ADAMS is accessible from the NRC Web site at www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
| | OFFICE RII:DRP RII:DRP SIGNATURE RHB /RA/ JHM /RA/ |
| | NAME RBernhard JMoorman DATE 03/21/2007 03/21/2007 E-MAIL COPY? YES NO YES NO YES NO YES NO YES NO YES NO YES NO |
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| Sincerely,/RA/ James H. Moorman, III, Chief Reactor Projects Branch 1 Division of Reactor ProjectsDocket Nos.:50-413, 50-414License Nos.:NPF-35, NPF-52cc: (See page 3)X PUBLICLY AVAILABLE G NON-PUBLICLY AVAILABLEG SENSITIVE X NON-SENSITIVEADAMS: X YesACCESSION NUMBER:_________________________OFFICERII:DRPRII:DRPSIGNATURERHB /RA/JHM /RA/NAMERBernhardJMoormanDATE03/21/200703/21/2007 E-MAIL COPY? YESNO YESNO YESNO YESNO YESNO YESNO YESNO OFFICIAL RECORD COPY DOCUMENT NAME: C:\FileNet\ML070800461.wpd DPC3cc:Randy D. Hart Regulatory Compliance Manager Duke Power Company LLC d/b/a/Duke Energy Carolinas, LLC Electronic Mail DistributionLisa F. VaughnAssociate General Counsel and Managing Attorney Duke Energy Corporation 526 South Church Street-EC 07H Charlotte, NC 28202Kathryn B. NolanSenior Counsel Duke Energy Corporation 526 South Church Street-EC 07H Charlotte, NC 28202David A. RepkaWinston & Strawn LLP Electronic Mail DistributionNorth Carolina MPA-1Electronic Mail DistributionHenry J. Porter, Asst. DirectorDiv. of Radioactive Waste Mgmt.
| | DPC 3 cc: North Carolina Electric Randy D. Hart Membership Corporation Regulatory Compliance Manager Electronic Mail Distribution Duke Power Company LLC d/b/a/Duke Energy Carolinas, LLC Peggy Force Electronic Mail Distribution Assistant Attorney General N. C. Department of Justice Lisa F. Vaughn Electronic Mail Distribution Associate General Counsel and Managing Attorney County Manager of York County, SC Duke Energy Corporation Electronic Mail Distribution 526 South Church Street-EC 07H Charlotte, NC 28202 Piedmont Municipal Power Agency Electronic Mail Distribution Kathryn B. Nolan Senior Counsel R. L. Gill, Jr., Manager Duke Energy Corporation Nuclear Regulatory Issues 526 South Church Street-EC 07H and Industry Affairs Charlotte, NC 28202 Duke Power Company LLC d/b/a Duke Energy Carolinas, LLC David A. Repka 526 S. Church Street Winston & Strawn LLP Charlotte, NC 28201-0006 Electronic Mail Distribution Distribution: (See page 4) |
| | North Carolina MPA-1 Electronic Mail Distribution Henry J. Porter, Asst. Director Div. of Radioactive Waste Mgmt. |
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| S. C. Department of Health and Environmental Control Electronic Mail DistributionR. Mike GandyDivision of Radioactive Waste Mgmt. | | S. C. Department of Health and Environmental Control Electronic Mail Distribution R. Mike Gandy Division of Radioactive Waste Mgmt. |
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| S. C. Department of Health and Environmental Control Electronic Mail DistributionElizabeth McMahonAssistant Attorney General S. C. Attorney General's Office Electronic Mail DistributionVanessa QuinnFederal Emergency Management Agency Electronic Mail DistributionNorth Carolina Electric Membership Corporation Electronic Mail DistributionPeggy ForceAssistant Attorney General N. C. Department of Justice Electronic Mail DistributionCounty Manager of York County, SCElectronic Mail DistributionPiedmont Municipal Power AgencyElectronic Mail DistributionR. L. Gill, Jr., ManagerNuclear Regulatory Issues and Industry Affairs Duke Power Company LLC d/b/a Duke Energy Carolinas, LLC 526 S. Church Street Charlotte, NC 28201-0006Distribution: (See page 4) | | S. C. Department of Health and Environmental Control Electronic Mail Distribution Elizabeth McMahon Assistant Attorney General S. C. Attorney General's Office Electronic Mail Distribution Vanessa Quinn Federal Emergency Management Agency Electronic Mail Distribution |
| DPC4Letter to J. from James Moorman, III dated March 21, 2007
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| SUBJECT: CATAWBA NUCLEAR STATION - NRC FINAL SIGNIFICANCEDETERMINATION AND CLOSURE OF UNRESOLVED ITEM - REPORT 05000413/2007012 AND 05000414/2006012Distribution:J. Stang, NRRC. Evans, RII EICS L. Slack, RII EICS RIDSNRRDIRS OE Mail PUBLIC | | DPC 4 Letter to J. from James Moorman, III dated March 21, 2007 SUBJECT: CATAWBA NUCLEAR STATION - NRC FINAL SIGNIFICANCE DETERMINATION AND CLOSURE OF UNRESOLVED ITEM - REPORT 05000413/2007012 AND 05000414/2006012 Distribution: |
| | J. Stang, NRR C. Evans, RII EICS L. Slack, RII EICS RIDSNRRDIRS OE Mail PUBLIC |
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Category:Letter
MONTHYEARIR 05000414/20240912024-09-0505 September 2024 Final Significance Determination of a White Finding and Nov and Assessment Followup Letter-NRC Inspection Report 05000414-2024091 IR 05000413/20240052024-08-26026 August 2024 Updated Inspection Plan for Catawba Nuclear Station (Report 05000413/2024005 & 05000414/2024005) ML24235A1542024-08-22022 August 2024 Notification of Target Set Inspection and Request for Information (NRC Inspection Report 05000413-2024402 and 05000414-2024402) IR 05000413/20240022024-08-0808 August 2024 Integrated Inspection Report 05000413-2024002 and 05000414-2024002 and Apparent Violation IR 05000413/20244032024-08-0101 August 2024 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000413/2024403; 05000414/2024403 ML24183A0972024-07-12012 July 2024 ISFSI; Catawba 1, 2 & ISFSI; McGuire 1, 2 & ISFSI; Oconee 1, 2, 3 & ISFSI; Shearon Harris 1; H. B. Robinson 2 & ISFSI; and Radioactive Package Shipping Under 10 CFR 71 (71-266 & 71-345) – Review of QA Program Changes EPID L-2024-LLQ-0002 ML24178A0552024-06-26026 June 2024 Requalification Program Inspection – Catawba Nuclear Station IR 05000414/20240902024-06-24024 June 2024 NRC Inspection Report 05000414/2024090 and Preliminary White Finding and Apparent Violation ML24170A8632024-06-11011 June 2024 Flowserve June 11, 2024, Part 21 Notification - Redacted Version for Publishing ML24144A1162024-05-28028 May 2024 Notification of Inspection and Request for Information for NRC Problem Identification and Resolution Inspection ML24149A1772024-05-28028 May 2024 NRC Response to Duke Energy 2025 FOF Schedule Change Request (Catawba and McGuire) ML24141A0482024-05-17017 May 2024 EN 56958_1 Ametek Solidstate Controls, Inc IR 05000413/20240012024-05-10010 May 2024 Integrated Inspection Report 05000413/2024001 and 05000414/2024001 and Apparent Violation ML24095A1072024-04-0808 April 2024 – Review of the Spring 2023 Steam Generator Tube Inspection Report (C1R27) IR 05000413/20243012024-03-12012 March 2024 – Notification of Licensed Operator Initial Examination 05000413/2024301 and 05000414/2024301 IR 05000413/20230062024-02-28028 February 2024 Annual Assessment Letter for Catawba Nuclear Station Units 1 and 2 - (NRC Inspection Report 05000413/2023006 and 05000414/2023006) IR 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 ML22276A2492022-10-25025 October 2022 Completion of License Renewal Commitment No. 10, Aging Management of Environmentally Assisted Fatigue ML22297A2642022-10-25025 October 2022 Project Manager Assignment 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 2024-09-05
[Table view] Category:Inspection Report
MONTHYEARIR 05000414/20240912024-09-0505 September 2024 Final Significance Determination of a White Finding and Nov and Assessment Followup Letter-NRC Inspection Report 05000414-2024091 IR 05000413/20240052024-08-26026 August 2024 Updated Inspection Plan for Catawba Nuclear Station (Report 05000413/2024005 & 05000414/2024005) IR 05000413/20240022024-08-0808 August 2024 Integrated Inspection Report 05000413-2024002 and 05000414-2024002 and Apparent Violation IR 05000413/20244032024-08-0101 August 2024 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000413/2024403; 05000414/2024403 IR 05000414/20240902024-06-24024 June 2024 NRC Inspection Report 05000414/2024090 and Preliminary White Finding and Apparent Violation IR 05000413/20240012024-05-10010 May 2024 Integrated Inspection Report 05000413/2024001 and 05000414/2024001 and Apparent Violation ML24095A1072024-04-0808 April 2024 – Review of the Spring 2023 Steam Generator Tube Inspection Report (C1R27) IR 05000413/20243012024-03-12012 March 2024 – Notification of Licensed Operator Initial Examination 05000413/2024301 and 05000414/2024301 IR 05000413/20230062024-02-28028 February 2024 Annual Assessment Letter for Catawba Nuclear Station Units 1 and 2 - (NRC Inspection Report 05000413/2023006 and 05000414/2023006) IR 05000413/20230042024-02-0202 February 2024 – Integrated Inspection Report 05000413-2023004 and 05000414-2023004 RA-23-0288, End of Cycle 27 (C1 R27) Steam Generator Tube Inspection Report2023-11-16016 November 2023 End of Cycle 27 (C1 R27) Steam Generator Tube Inspection Report IR 05000413/20230102023-10-11011 October 2023 NRC Inspection Report 05000413/2023010 and 05000414/2023010 IR 05000413/20230052023-08-25025 August 2023 Updated Inspection Plan for Catawba Nuclear Station Units 1 and 2 (Report 05000413/2023005 and 05000414/2023005) IR 05000413/20230022023-07-25025 July 2023 Integrated Inspection Report 05000413/2023002 and 05000414/2023002 IR 05000413/20230012023-05-0505 May 2023 Integrated Inspection Report 05000413/2023001 and 05000414/2023001 IR 05000413/20230112023-04-25025 April 2023 Focused Engineering Inspection Report 05000413/2023011 and 05000414/2023011 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 IR 05000413/20224032022-11-17017 November 2022 Cyber Security Inspection Report 05000413/2022403 and 05000414/2022403 (Public) 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 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 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 IR 05000413/20220102022-07-21021 July 2022 Design Basis Assurance Inspection (Programs) Inspection Report 05000413/2022010 and 05000414/2022010 IR 05000414/20220012022-04-28028 April 2022 Integrated Inspection Report 05000413/ 2022001 and 05000414/2022001 RA-22-0080, Independent Spent Fuel Storage Installation, McGuire, Units 1 & 2, Independent Spent Fuel Storage Installation, Request for an Exemption to the Requirements of Certificate of Compliance No. 1031 for the NAC Magnastor Storage System2022-04-0707 April 2022 Independent Spent Fuel Storage Installation, McGuire, Units 1 & 2, Independent Spent Fuel Storage Installation, Request for an Exemption to the Requirements of Certificate of Compliance No. 1031 for the NAC Magnastor Storage System IR 05000413/20224202022-04-0707 April 2022 Security Inspection Report 05000413/2022420 and 05000414/2022420 IR 05000413/20210062022-03-0202 March 2022 Annual Assessment Letter for Catawba Nuclear Station Units 1 and 2 (Report 05000413/2021006 and 05000414/2021006) IR 05000413/20224012022-02-18018 February 2022 Security Baseline Inspection Report 05000413/2022401 and 05000414/2022401 IR 05000413/20210042022-01-26026 January 2022 Integrated Inspection Report 05000413/2021004 and 05000414/2021004 ML22011A1802022-01-18018 January 2022 Review of the Spring 2021 Steam Generator Tube Inspection Report IR 05000413/20213012021-11-0808 November 2021 Operator Licensing Examination Report 05000413/2021301 and 05000414/2021301 IR 05000413/20214022021-11-0303 November 2021 Security Baseline Inspection Report 05000413/2021402 and 05000414/2021402 IR 05000413/20210032021-10-28028 October 2021 Integrated Inspection Report 05000413/2021003 and 05000414/2021003 IR 05000413/20210102021-09-27027 September 2021 Design Basis Assurance Inspection (Teams) Inspection Report 05000413/2021010 and 05000414/2021010 IR 05000413/20214042021-08-26026 August 2021 Material Control and Accounting Program Inspection Report 05000413/2021404 and 05000414/2021404 (OUO Removed) IR 05000413/20210022021-08-0505 August 2021 Integrated Inspection Report 05000413/2021002 and 05000414/2021002 IR 05000413/20210012021-04-29029 April 2021 Integrated Inspection Report 05000413/2021001 and 05000414/2021001 IR 05000413/20210112021-04-23023 April 2021 NRC Fire Protection Team Inspection Report 05000413/2021011 and 05000414/2021011 IR 05000413/20200062021-03-0303 March 2021 Annual Assessment Letter for Catawba Nuclear Station Units 1 and 2 - NRC Inspection Report 05000413/2020006 and 05000414/2020006 IR 05000413/20214012021-02-26026 February 2021 Security Baseline Inspection Report 05000413/2021401 and 05000414/2021401 IR 05000413/20200042021-01-28028 January 2021 Integrated Inspection Report 05000413/2020004 and 05000414/2020004 IR 05000413/20200112020-12-18018 December 2020 Biennial Problem Identification and Resolution Inspection Report 05000413/2020011 and 05000414/2020011 Dated December 18, 2020 IR 05000413/20204012020-11-23023 November 2020 Security Aseline Inspection Report 05000413/2020401 and 05000414/2020401 IR 05000413/20200032020-10-30030 October 2020 Integrated Inspection Report 05000413/2020003, 05000414/2020003 and 07200045/2020002 IR 05000413/20200052020-08-17017 August 2020 Updated Inspection Plan for Catawba Nuclear Station Units 1 and 2 (NRC Inspection Report 05000413/2020005 and 05000414/2020005) 2024-09-05
[Table view] |
Inspection Report - Catawba - 2007012 |
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Text
rch 21, 2007
SUBJECT:
CATAWBA NUCLEAR STATION - NRC FINAL SIGNIFICANCE DETERMINATION AND CLOSURE OF UNRESOLVED ITEM - REPORT 05000413/2007012 AND 05000414/2006012
Dear Mr. Morris:
On December 6, 2006, the U.S. Nuclear Regulatory Commission (NRC) completed a Special Inspection at your Catawba Nuclear Station Units 1 and 2 related to flooding vulnerabilities of the turbine building and some safety-related areas. The results of this inspection were documented in NRC Special Inspection Report 05000413/2006010 and 05000414/2006010.
This report contained Unresolved Item 05000413,414/2006010-01.
This unresolved item was opened to re-quantify the risk for a Green non-cited violation (NCV 05000413,414/2006004-02) issued on October 26, 2006. This NCV documented your failure to maintain appropriate design control to ensure that below-grade electrical conduits were properly sealed to prevent water intrusion into areas of the plant containing safety-related equipment.
The NRC Special Inspection identified that additional flooding vulnerabilities were present from April 6, 2005 to May 22, 2006, and determined that a requantification of the station risk was appropriate.
The NRC staff has completed requantification of the station risk for this issue and determined that the change to core damage frequency that resulted from the additional water ingress paths was less than 1E-6 (Green) because of the low frequency of rainfall events with the potential to flood the susceptible areas. Therefore, the risk significance of this issue, which was dispositioned as Green NCV 05000413/2006004-02, 05000414/2006004-02, will not change.
Thank you for your assistance in this matter. If you have any questions concerning this matter, please contact me at (404) 562-4647.
DPC 2 In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its enclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRCs document system (ADAMS). ADAMS is accessible from the NRC Web site at www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA/
James H. Moorman, III, Chief Reactor Projects Branch 1 Division of Reactor Projects Docket Nos.: 50-413, 50-414 License Nos.: NPF-35, NPF-52 cc: (See page 3)
_________________________
OFFICE RII:DRP RII:DRP SIGNATURE RHB /RA/ JHM /RA/
NAME RBernhard JMoorman DATE 03/21/2007 03/21/2007 E-MAIL COPY? YES NO YES NO YES NO YES NO YES NO YES NO YES NO
DPC 3 cc: North Carolina Electric Randy D. Hart Membership Corporation Regulatory Compliance Manager Electronic Mail Distribution Duke Power Company LLC d/b/a/Duke Energy Carolinas, LLC Peggy Force Electronic Mail Distribution Assistant Attorney General N. C. Department of Justice Lisa F. Vaughn Electronic Mail Distribution Associate General Counsel and Managing Attorney County Manager of York County, SC Duke Energy Corporation Electronic Mail Distribution 526 South Church Street-EC 07H Charlotte, NC 28202 Piedmont Municipal Power Agency Electronic Mail Distribution Kathryn B. Nolan Senior Counsel R. L. Gill, Jr., Manager Duke Energy Corporation Nuclear Regulatory Issues 526 South Church Street-EC 07H and Industry Affairs Charlotte, NC 28202 Duke Power Company LLC d/b/a Duke Energy Carolinas, LLC David A. Repka 526 S. Church Street Winston & Strawn LLP Charlotte, NC 28201-0006 Electronic Mail Distribution Distribution: (See page 4)
North Carolina MPA-1 Electronic Mail Distribution Henry J. Porter, Asst. Director Div. of Radioactive Waste Mgmt.
S. C. Department of Health and Environmental Control Electronic Mail Distribution R. Mike Gandy Division of Radioactive Waste Mgmt.
S. C. Department of Health and Environmental Control Electronic Mail Distribution Elizabeth McMahon Assistant Attorney General S. C. Attorney General's Office Electronic Mail Distribution Vanessa Quinn Federal Emergency Management Agency Electronic Mail Distribution
DPC 4 Letter to J. from James Moorman, III dated March 21, 2007 SUBJECT: CATAWBA NUCLEAR STATION - NRC FINAL SIGNIFICANCE DETERMINATION AND CLOSURE OF UNRESOLVED ITEM - REPORT 05000413/2007012 AND 05000414/2006012 Distribution:
J. Stang, NRR C. Evans, RII EICS L. Slack, RII EICS RIDSNRRDIRS OE Mail PUBLIC