ML073180202
| ML073180202 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 11/16/2007 |
| From: | Tam P NRC/NRR/ADRO/DORL/LPLIII-1 |
| To: | Rencheck M Indiana Michigan Power Co |
| References | |
| GL-07-001, TAC MD4318, TAC MD4319 | |
| Download: ML073180202 (5) | |
Text
November 16, 2007 Mr. Michael W. Rencheck Senior Vice President and Chief Nuclear Officer Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106
SUBJECT:
D. C. COOK NUCLEAR PLANT, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO GENERIC LETTER 2007-01, INACCESSIBLE OR UNDERGROUND POWER CABLE FAILURES THAT DISABLE ACCIDENT MITIGATION SYSTEMS OR CAUSE PLANT TRANSIENTS (TAC NOS. MD4318 AND MD4319)
Dear Mr. Rencheck:
In a letter dated May 8, 2007, Indiana Michigan Power Company provided its 90-day response to Generic Letter 2007-01. The Nuclear Regulatory Commission (NRC) staff reviewed the information transmitted by that letter and has generated draft questions, which had been e-mailed to your staff (Accession No. ML072920555) on October 19, 2007. The NRC staff discussed the draft questions with your staff in a telephone conference on November 14, 2007.
As a result of that discussion and subsequent internal deliberation, the NRC staff supplemented draft Question 2, and finalized the enclosed Request for Additional Information (RAI).
Please respond within 30 days of the date of this letter. Feel free to contact me if you need clarification of this RAI.
Sincerely,
/RA/
Peter S. Tam, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-315 and 50-316
Enclosure:
As stated cc: See next page
ML073180202 OFFICE LPL3-1\\PM LPL3-1/LA EEEB/BC LPL3-1/BC (A)
NAME PTam THarris GWilson CMunson DATE 11/15/07 11/15/07 11/15/07 11/15/07
REQUEST FOR ADDITIONAL INFORMATION D.C. COOK NUCLEAR PLANT, UNITS 1 AND 2 RESPONSE TO GENERIC LETTER (GL) 2007-01, INACCESSIBLE OR UNDERGROUND POWER CABLE FAILURES THAT DISABLE ACCIDENT MITIGATION SYSTEMS OR CAUSE PLANT TRANSIENTS (1)
Licensee Event Report 50-315/98040-00 discussed a faulted underground cable due to aging of the cable. Please provide the information for the cable fault as requested in GL 2007-01, or justify why it is not within the scope of the GL.
(2)
The licensee reviewed its cable routing to identify cables that could routinely be exposed to moisture. A licensee should not have excluded cable failures based on whether the cables were routinely exposed to moisture. All failures of underground or inaccessible cables within the scope of the Maintenance Rule are within the scope of the GL. Please confirm that the reported cable failure history included all cable failures. If D.C. Cook's response to GL 2007-01 excluded cable failures based on moisture exposure, please provide the data for each cable failure as requested in GL 2007-01.
Donald C. Cook Nuclear Plant, Units 1 and 2 cc:
Regional Administrator, Region III U.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville Road Lisle, IL 60532-4351 Attorney General Department of Attorney General 525 West Ottawa Street Lansing, MI 48913 Township Supervisor Lake Township Hall P.O. Box 818 Bridgman, MI 49106 U.S. Nuclear Regulatory Commission Resident Inspector's Office 7700 Red Arrow Highway Stevensville, MI 49127 Kimberly Harshaw, Esquire Indiana Michigan Power Company One Cook Place Bridgman, MI 49106 Mayor, City of Bridgman P.O. Box 366 Bridgman, MI 49106 Special Assistant to the Governor Room 1 - State Capitol Lansing, MI 48909 Susan D. Simpson Regulatory Affairs Manager Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106 Michigan Department of Environmental Quality Waste and Hazardous Materials Div.
Hazardous Waste & Radiological Protection Section Nuclear Facilities Unit Constitution Hall, Lower-Level North 525 West Allegan Street P. O. Box 30241 Lansing, MI 48909-7741 Lawrence J. Weber, Plant Manager Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106 Joseph Jensen, Site Vice President Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106