ML073110441

RAI, Request for Additional Information GL 2007-01, Inaccessible or Underground Power Cable Failures That Disable Accident Mitigation Systems or Cause Plant Transients

ML073110441
Person / Time
Site:	Waterford
Issue date:	11/20/2007
From:	Kalyanam N NRC/NRR/ADRO/DORL/LPLIV
To:	Walsh K Entergy Operations
Kalyanam N, NRR/DORL/LP4, 415-1480
References
GL-07-004, TAC MD4395
Download: ML073110441 (4)

Text

November 20, 2007 Mr. Kevin T. Walsh Vice President of Operations Entergy Operations, Inc.

17265 River Road Killona, LA 70057-3093

SUBJECT:

WATERFORD STEAM ELECTRIC STATION, UNIT 3 - REQUEST FOR ADDITIONAL INFORMATION ON THE NUCLEAR REGULATORY COMMISSION GENERIC LETTER 2007-01: INACCESSIBLE OR UNDERGROUND POWER CABLE FAILURES THAT DISABLE ACCIDENT MITIGATION SYSTEMS OR CAUSE PLANT TRANSIENTS (TAC NO. MD4395)

Dear Mr. Walsh:

The U.S. Nuclear Regulatory Commission (NRC) staff has received the cable failure history for Waterford Steam Electric Station, Unit 3 (Waterford 3), in response to Generic Letter (GL) 2007-01, Inaccessible or Underground Power Cable Failures that Disable Accident Mitigation Systems or Cause Plant Transients. During its review, the licensee found failures of cables within the scope of Title 10 of the Code of Federal Regulations (10 CFR), Section 50.65, Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants (Maintenance Rule). Please provide the type of cable insulation for the cable failures included in your response to GL 2007-01.

Waterford 3 prepared its response using the Nuclear Energy Institute (NEI) guidance, provided in an industry letter dated March 16, 2007, Guidance for Response to GL 2007-01. The NRC provided additional guidance on how licensees should determine which cable failures are within the scope of GL 2007-01 in the NRC letter dated April 13, 2007, from Michael J. Case (NRC) to James H. Riley (Nuclear Energy Institute) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML070940311). Please discuss exceptions and/or deviations, if any, from thr NEI guidance, as supplemented by the NRC additional guidance. In addition, if Waterford 3's response to GL 2007-01 excluded cable failures based on the NEI guidance (i.e., not following NRC guidance in the NRC letter dated April 13, 2007), please provide the data for these failures as requested in GL 2007-01.

K. T. Walsh Please provide the additional information requested within 30 days of the receipt of this letter.

If you have any questions, please contact me at (301) 415-1480.

Sincerely,

/RA/

N. Kalyanam, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-382 cc: See next page

ML073110441 NRR-088 *No change from Staff provided RAI OFFICE NRR/LPL4/PM NRR/LPL4/LA NRR/DE/EEEB* NRR/LPL4/BC NAME NKalyanam:sp JBurkhardt GWilson JNDonohew for THiltz DATE 11/13/07 11/9/07 10/18/07 11/20/07 Waterford Steam Electric Station, Unit 3 cc:

Senior Vice President Louisiana Department of Environmental Entergy Nuclear Operations Quality P.O. Box 31995 Radiological Emergency Planning Jackson, MS 39286-1995 and Response Division P.O. Box 4312 Senior Vice President and COO Baton Rouge, LA 70821-4312 Entergy Operations, Inc.

P.O. Box 31995 Louisiana Department of Environmental Jackson, MS 39286-1995 Quality Office of Environmental Compliance Vice President, Operations Support P.O. Box 4312 Entergy Services, Inc. Baton Rouge, LA 70821-4312 P.O. Box 31995 Jackson, MS 39286-1995 Parish President Council St. Charles Parish Site Vice President P.O. Box 302 Waterford Steam Electric Station, Unit 3 Hahnville, LA 70057 Entergy Operations, Inc.

17265 River Road Chairman Killona, LA 70057-3093 Louisiana Public Services Commission P.O. Box 91154 General Manager, Plant Operations Baton Rouge, LA 70825-1697 Waterford Steam Electric Station, Unit 3 Entergy Operations, Inc. Richard Penrod, Senior Environmental 17265 River Road Scientist/State Liaison Officer Killona, LA 70057-3093 Office of Environmental Services Northwestern State University Director, Nuclear Safety & Licensing Russell Hall, Room 201 Entergy Services, Inc. Natchitoches, LA 71497 440 Hamilton Avenue White Plains, NY 10601 Resident Inspector Waterford NPS Director, Nuclear Safety Assurance P.O. Box 822 Entergy Operations, Inc. Killona, LA 70057-0751 17265 River Road Killona, LA 70057-3093 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Senior Manager, Nuclear Safety 611 Ryan Plaza Drive, Suite 400

& Licensing Arlington, TX 76011 Entergy Services, Inc.

P.O. Box 31995 Jackson, MS 39286-1995 Manager, Licensing Entergy Operations, Inc.

17265 River Road Killona, LA 70057-3093 September 2007