ML082900095

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Closeout of Generic Letter 2007-01 Inaccessible or Underground Power Cable Failures That Disable Accident Mitigation Systems or Cause Plat Transients
ML082900095
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 10/24/2008
From: James Kim
Plant Licensing Branch 1
To:
Entergy Nuclear Operations
Kim J, NRR/DORL, 415-4125
References
TAC MD4392
Download: ML082900095 (3)


Text

October 24, 2008 Vice President, Operations Entergy Nuclear Operations, Inc.

Vermont Yankee Nuclear Power Station P.O. Box 250 Governor Hunt Road Vernon, VT 05354

SUBJECT:

VERMONT YANKEE NUCLEAR POWER STATION - CLOSEOUT OF GENERIC LETTER 2007-01 INACCESSIBLE OR UNDERGROUND POWER CABLE FAILURES THAT DISABLE ACCIDENT MITIGATION SYSTEMS OR CAUSE PLAT TRANSIENTS (TAC NO. MD4392)

Dear Sir or Madam:

On February 7, 2007, the U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 2007-01 AInaccessible 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:

(1) 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, (2) 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, component cooling water and other systems that are within the scope of 10 CFR 50.65 (the Maintenance Rule).

In your letter dated April 30, 2007, (ADAMS Accession No. ML071290055), you provided the information requested in GL 2007-01 including: (1) 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, (2) 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, service water, component cooling water and other systems that are within the scope of 10 CFR 50.65 (the Maintenance Rule).

The NRC staff has reviewed the submitted information and has concluded that for Vermont Yankee Nuclear Power 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 James Kim at (301) 415-4125.

Sincerely,

/RA/

James S. Kim, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-271 cc w/encl: Distribution via ListServ

If you have any questions regarding this letter, please feel free to contact James Kim at (301) 415-4125.

Sincerely,

/RA/

James Kim, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-271 cc w/encl: Distribution via ListServ DISTRIBUTION:

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RidsNrrPMJKim RidsNrrDorlDPR ADAMS Accession Number: ML082900095 OFFICE LPL1-1/PM LPL1-1/LA EEEB/BC LPL1-1/BC NAME JKim SLittle GWilson MKowal DATE 10/21/08 10/22/08 10/22/08 10/24/08 OFFICIAL RECORD COPY