ML17326A088
| ML17326A088 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 08/12/1999 |
| From: | Stang J NRC (Affiliation Not Assigned) |
| To: | Powers R NIAGARA MOHAWK POWER CORP. |
| References | |
| NUDOCS 9908240256 | |
| Download: ML17326A088 (7) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 m-3a/8/4 August 12, 1999 Mr. Robert P. Powers, Senior Vice President Indiana Michigan Power Company Nuclear Generation Group ovv Circle Drive Buchanan, Ml 49107
SUBJECT:
DONALDC. COOK NUCLEAR PLANT, UNITS 1 AND 2 - ISSUANCE OF DRAFT RISK ASSESSMENT
Dear Mr. Powers:
Enclosed are the draff preliminary results of an analysis of the risk significance of issues that were identified at Donald C. Cook Nuclear Plant, Units 1 and 2, between August 1997 and January 1999.
The analysis describes the framework used to perform the integrated risk assessment and lists issues that have been identified as having the potential to affect core damage frequency (CDF) and containment performance. The issues are grouped according to whether they impact mitigating functions, initiating events, or containment failure mode.
This analysis is being performed to support our ongoing accident sequence precursor (ASP) analysis program, which evaluates operational events at nuclear power plants to determine risk significance of events or conditions.
This analysis is consistent with the new reactor oversight
'rocess for analyzing the safety significance of inspection findings.
The analysis methods and results are provided to you for your information. We will be pleased to receive and address any comments that you may have.
The analysis is ongoing, and as parts are completed we willtransmit them to you for comment.
Our next transmittal (in September 1999) willcontain the analyses of the potentially risk-significant issues and the ice condenser issues. Again, we would appreciate any comments.
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Robert P. Powers A final report that contains the analyses of ail issues is scheduled to be transmitted to you in December of 1999 for review and comment.
Please contact me at 301-415-1345 ifyou have any questions regarding this letter.
Sincerely, C
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hn F. Stang,r.
oject Manager, Section 1
Project Directorate III Division of Lic'ensing Project Management Office of Nuclear Reactor Regulation
. Docket Nos. 50-315 and 50-316
Enclosure:
As stated
'cw/encl: See next page
Robert P. Powers August 12, 1999 I
A final report that contains the analyses of all issues is scheduled to be transmitted to you in December of 1999 for review and comment Please contact me at 301-415-1345 ifyou have any questions regarding this letter.
Sincerely, Docket Nos. 50-315 and 50-316
Enclosure:
As stated ccw/encl: See next page Distribution:
Docket File PUBLIC PD31r/f JZwolinski/SBlack OGC J. Stang (2)
ACRS G. Grant, Rill S. Weerakkody, RES/DREA/OERAB Original signed by:
John F. Stang, Sr. Project. Manager, Section 1
Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation DOCUMENT NAME: G:(PD31>DCCOOK12(risk.wpd To receive a copy of this document, indicate in the box: "C" = Copy without attachment/enclos re "E" = Copy with attachment/enclosure "N"= No copy OFFICE NAME DATE LA:PD31 E
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Robert P. Powers August 12, 1999 A final report that contains the analyses of all issues is scheduled to be transmitted to you in December of 1999 for review and comment Please contact me at 301-415-1345 ifyou have any questions regarding this letter.
Sincerely, Docket Nos. 50-315 and 50-316
Enclosure:
As stated cc w/encl: See next page Distribution:
Docket File PUBLIC PD31r/f JZwolinski/S Black OGC J. Stang (2)
ACRS G. Grant, Rill S. Weerakkody, RES/DREA/OERAB Original signed by:
John F. Stang, Sr. Project Manager, Section 1
Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation DOCUMENT NAME: G:>PD31(DCCOOK1 2>risk.wpd To receive a copy of this document, indicate in the box: "C" = Copy without attachment/enclos r
"E" = Copy with attachment/enclosure "N" = No copy OFFICE NAME DATE PM'st SS 9
LA:PD31 E
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0 Robert P. Powers Indiana Michigan Power Company Donald C. Cook Nuclear Plant
, Units 1 and 2 CC:
Regional Administrator, Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351 Attorney General Department of.Attorney General 525 West. Ottawa Street Lansing, Ml 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, Ml 49127 Jeremy J. Euto, Esquire Indiana Michigan Power Company Nuclear Generation Group 500 Circle Drive Buchanan, Ml 49107 Mayor, City of Bridgman P.O. Box 366 Bridgman, Ml 49106 Special Assistant to the Governor Room 1 - State Capitol Lansing, Ml 48909 Drinking Water and Radiological Protection Division Michigan Department of Environmental Quality 3423 N. Martin Luther-King Jr Blvd P.O. Box 30630 CPH Mailroom Lansing, Ml 48909-8130 Gordon Arent Director, Regulatory Affairs Indiana Michigan Power Company Nuclear Generation Group 500 Circle Drive Buchanan, Ml 49107 David A. Lochbaum Union of Concerned Scientists 1616 P Street NW, Suite 310 Washington, DC 20036-1495 A. Christopher Bakken, Site Vice President Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, Ml 49106
'ichael W. Rencheck Vice President, Nuclear Engineering Indiana Michigan Power Company Nuclear Generation Group 500 Circle Drive Buchanan, Ml 49107