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MONTHYEARML0729500272007-10-25025 October 2007 RAI, Response to Generic Letter 2007-01 Project stage: RAI ML0829405962008-10-28028 October 2008 Closeout of Generic Letter 2007-01, Inaccessible or Underground Power Cable Failures That Disable Accident Mitigation Systems or Cause Plant Transients Project stage: Other 2007-10-25
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Category:Letter
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UNITED NUCLEAR REGULATORY WASHINGTON, D.C. 20555-0001 October 28, 2008 Mr. Rick A. Muench President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation Post Office Box 411 Burlington, KS 66839 WOLF CREEK GENERATING STATION -CLOSEOUT OF GENERIC LETTER 2007-01, "INACCESSIBLE OR UNDERGROUND POWER CABLE FAILURES THAT DISABLE ACCIDENT MITIGATION SYSTEMS OR CAUSE PLANT TRANSIENTS" (TAC NO. MD4397)
Dear Mr. Muench:
On February 7,2007, the U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 2007-01, "Inaccessible or Underground Power Cable Failures That Disable Accident Mitigation Systems or Cause Plant Transients" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML070360665).
GL 2007-01 requested that licensees provide the following information within 90 days of the date of the GL: A history of inaccessible or underground power cable failures for all cables that are within the scope of Title 10 of the Code of Federal Regulations (10 CFR 50.65, the Maintenance Rule) and for all voltage levels including the cable type, cable manufacturer, date of failure, type of service, voltage class, years of service, and the root causes for the failure; and A description of all inspection, testing, and monitoring programs to detect the degradation of inaccessible or underground power cables that support emergency diesel generators (EDGs), offsite power, emergency service water (ESW), service water (SW), component cooling water (CCW), and other systems that are within the scope of 10 CFR 50.65 (the Maintenance Rule). In your letters dated May 2 and November 13, 2007 (ADAMS Accession Nos. ML071290049 and ML073241100, respectively), you provided the information requested in GL 2007-01 and the subsequent request for additional information including: A history of inaccessible or underground power cable failures for all cables that are within the scope of 10 CFR 50.65 (the Maintenance Rule) and for all voltage levels including the cable type, cable manufacturer, date of failure, type of service, voltage class, years of service, and the root causes for the failure; and A description of all inspection, testing, and monitoring programs to detect the degradation of inaccessible or underground power cables that support EDGs, offsite power, ESW, SW, CCW, and other systems that are within the scope of 10 CFR 50.65 (the Maintenance Rule).
R. Muench -2 The NRC staff has reviewed the submitted information and has concluded that for Wolf Creek Generating Station, your response to GL 2007-01 is adequate.
Based on this review, your response to GL 2007-01 is considered closed and no further action is requested of you at this time. If you have any questions regarding this letter, please feel free to contact me at (301) 415-3016.
Sincerely, Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-482 cc: See next page Wolf Creek Generating Station (9/19/2008) cc: Office of the Governor State of Kansas Topeka, KS 66612 Additional Distribution via Listserv OFFICE NRR/LPL4/PM NRRlLPL4/LA NAME BSingal JBurkhardt DATE 10/23/08 October 28, 2008 R. Muench -2 The NRC staff has reviewed the submitted information and has concluded that for Wolf Creek Generating Station, your response to GL 2007-01 is adequate.
Based on this review, your response to GL 2007-01 is considered closed and no further action is requested of you at this time. If you have any questions regarding this letter, please feel free to contact me at (301) 415-3016.
Sincerely, IRA by Michael T. Markley fori Balwant K. Singal, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-482 cc: See next page DISTRIBUTION:
PUBLIC RidsNrrDorlLpl4 Resource RidsRgn4MailCenter Resource LPLIV rtf RidsNrrPMBSingal Resource RidsNrrDeEeeb Resource RidsAcrsAcnw_MailCTR Resource RidsNrrLAJBurkhardt Resource RidsNrrDorlDpr Resource RidsOgcRp Resource ADAMS Accession No.: Ml082940596 NRRlLPL4/PM BSingal