ML040820654

Final Accident Sequence Precursor Analysis of August 2001 Operational Condition

ML040820654
Person / Time
Site:	Cook
Issue date:	05/28/2004
From:	Stang J NRC/NRR/DLPM/LPD3
To:	Nazar M Indiana Michigan Power Co
Stang J
Shared Package
ML040820666	List: ML040820654
References
IR-01-017
Download: ML040820654 (2)

Text

May 28, 2004 Mr. Mano K. Nazar American Electric Power Senior Vice President and Chief Nuclear Officer Indiana Michigan Power Company Nuclear Generation Group 500 Circle Drive Buchanan, MI 49107

SUBJECT:

DONALD C. COOK NUCLEAR PLANT, UNITS 1 AND 2 - FINAL ACCIDENT SEQUENCE PRECURSOR ANALYSIS OF AUGUST 2001 OPERATIONAL CONDITION

Dear Mr. Nazar:

Enclosed for your information is the final Accident Sequence Precursor (ASP) analysis of an operational conditions which were discovered at the Donald C. Cook Nuclear Plant (D. C.

Cook), Units 1 and 2, in August 2001. These conditions were documented in the U. S. Nuclear Regulatory Commission (NRC) Inspection Reports No. 50-315/316/01-17, dated March 21, 2002. We prepared the final analysis based on our review and evaluation of comments from the licensee and the NRC staff on the preliminary analysis of this event. The analysis was clarified as a result of comments. There were also minor changes to the quantitative result, however, the conclusions remain unchanged. Our responses to your specific comments are included in Appendix B to the enclosed report. Our review of your comments employed the criteria contained in the material which accompanied the preliminary analysis. The results of the final ASP analysis indicate that this condition is a precursor [i.e., the importance or change in core damage probability (CCDP) >1E-6].

Please contact me at 301-415-1345 if you have any questions regarding the enclosure. We recognize and appreciate the effort expended by you and your staff in reviewing comments on the preliminary analysis.

Due to the potential sensitivity of the information described in the enclosed ASP analysis, the staff has not made this enclosure publicly available.

Sincerely,

/RA/

John F. Stang, Senior Project Manager, Section 1 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-315 and 50-316

Enclosure:

ASP Final Analysis (Sensitive - Not for Public Disclosure) cc w/o encl: See next page

ML040820654 (Letter)

ML040910515 (Final Precursor Analysis)

ML040820666 (Package)

Donald C. Cook Nuclear Plant, Units 1 and 2 cc:

Regional Administrator, Region III Michigan Department of Environmental U.S. Nuclear Regulatory Commission Quality 801 Warrenville Road Waste and Hazardous Materials Div.

Lisle, IL 60532-4351 Hazardous Waste & Radiological Protection Section Attorney General Nuclear Facilities Unit Department of Attorney General Constitution Hall, Lower-Level North 525 West Ottawa Street 525 West Allegan Street Lansing, MI 48913 P. O. Box 30241 Lansing, MI 48909-7741 Township Supervisor Lake Township Hall David A. Lochbaum P.O. Box 818 Nuclear Safety Engineer Bridgman, MI 49106 Union of Concerned Scientists 1707 H Street NW, Suite 600 U.S. Nuclear Regulatory Commission Washington, DC 20036 Resident Inspectors Office 7700 Red Arrow Highway Michael J. Finissi, Plant Manager Stevensville, MI 49127 Indiana Michigan Power Company Nuclear Generation Group David W. Jenkins, Esquire One Cook Place Indiana Michigan Power Company Bridgman, MI 49106 One Cook Place Bridgman, MI 49106 Mr. Joseph N. Jensen, Site Vice President Indiana Michigan Power Company Mayor, City of Bridgman Nuclear Generation Group P.O. Box 366 One Cook Place Bridgman, MI 49106 Bridgman, MI 49106 Special Assistant to the Governor Room 1 - State Capitol Lansing, MI 48909 Mr. John A. Zwolinski Director, Design Engineering and Regulatory Affairs Indiana Michigan Power Company Nuclear Generation Group 500 Circle Drive Buchanan, MI 49107