ML073040131
| ML073040131 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 10/31/2007 |
| From: | Howell A NRC/RGN-IV/DRP |
| To: | Minahan S Nebraska Public Power District (NPPD) |
| References | |
| Download: ML073040131 (5) | |
Text
UNITED STATES NU CLE AR RE GU LATOR Y C O M M I S S I O N R EGI ON I V 611 R YAN PLAZA D R IV E, SU ITE 400 AR LI N GTON , TEXAS 76011-4005 October 31, 2007 Stewart B. Minahan, Vice President-Nuclear and CNO Nebraska Public Power District 72676 648A Avenue Brownville, NE 68321
SUBJECT:
ASSESSMENT FOLLOWUP LETTER - COOPER NUCLEAR STATION On August 31, 2007, the NRC staff issued the mid-cycle performance review of the Cooper Nuclear Station (CNS) for the first half of the calendar year 2007 assessment cycle. In the letter that documented this review, the NRC staff indicated that it was in the process of reviewing whether or not the circumstances involving both a White performance indicator and a White finding constituted double counting as currently defined by Inspection Manual Chapter 0305, Operating Reactor Assessment Program, Section 06.06b. The results of our review are provided in this assessment followup letter, as described below.
During the first quarter of 2007, the Mitigating Systems Performance Index (MSPI) for Emergency AC Power Systems turned White and remained White at the end of the mid-cycle assessment period. This performance indicator turned White following a January 18, 2007, surveillance test in which Emergency Diesel Generator 2 (EDG 2) failed to run. As discussed in our August 17, 2007, letter (ADAMS ML072290167), this issue also resulted in a White finding because it involved a failure to promptly identify a significant condition adverse to quality that resulted in the reduced reliability of EDG 2.
Consistent with the guidance in NRC Inspection Manual Chapter 0305, the NRC staff performed a review of the EDG failure that was common to both the White performance indicator result and the White finding to determine whether or not the circumstances associated with this issue constitute double counting of a performance indicator and an inspection finding. On the basis of our review, the NRC staff has determined that the underlying causes for why the White performance indicator and inspection finding crossed the performance threshold are the same.
Therefore, the two White inputs will be considered as one assessment input for the purposes of determining the level or regulatory oversight relative to the Reactor Oversight Process Action Matrix. As a result, CNS will remain in the Regulatory Response Column of the NRCs Action Matrix.
The NRC staff plans to implement Supplemental Inspection Procedure 95001, Supplemental Inspection for One or Two White Inputs in a Strategic Performance Area, to provide assurance that the root and contributing causes of both the White MSPI performance indicator and the White finding were understood and to provide assurance that the corrective actions were sufficient to address the causes, and prevent recurrence of problems. This inspection is scheduled for the week of December 3, 2007.
Stewart B. Minahan 2 In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRCs document system (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/readingrm/adams.html (The Public Electronic Reading Room).
Please contact Michael C. Hay, of my staff, at (817) 860-8144 with any questions you may have regarding this letter.
Sincerely,
/RA/
Arthur T. Howell III, Director Division of Reactor Projects Docket: 50-298 License: DPR-074 cc:
Gene Mace Nuclear Asset Manager Nebraska Public Power District P.O. Box 98 Brownville, NE 68321 John C. McClure, Vice President and General Counsel Nebraska Public Power District P.O. Box 499 Columbus, NE 68602-0499 David Van Der Kamp Licensing Manager Nebraska Public Power District P.O. Box 98 Brownville, NE 68321 Michael J. Linder, Director Nebraska Department of Environmental Quality P.O. Box 98922 Lincoln, NE 68509-8922
Stewart B. Minahan 3 Chairman Nemaha County Board of Commissioners Nemaha County Courthouse 1824 N Street Auburn, NE 68305 Julia Schmitt, Manager Radiation Control Program Nebraska Health & Human Services Dept. of Regulation & Licensing Division of Public Health Assurance 301 Centennial Mall, South P.O. Box 95007 Lincoln, NE 68509-5007 H. Floyd Gilzow Deputy Director for Policy Missouri Department of Natural Resources P. O. Box 176 Jefferson City, MO 65102-0176 Director, Missouri State Emergency Management Agency P.O. Box 116 Jefferson City, MO 65102-0116 Chief, Radiation and Asbestos Control Section Kansas Department of Health and Environment Bureau of Air and Radiation 1000 SW Jackson, Suite 310 Topeka, KS 66612-1366 Melanie Rasmussen, State Liaison Officer/Radiation Control Program Director Bureau of Radiological Health Iowa Department of Public Health Lucas State Office Building, 5th Floor 321 East 12th Street Des Moines, IA 50319 John F. McCann, Director, Licensing Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601-1813
Stewart B. Minahan 4 Keith G. Henke, Planner Division of Community and Public Health Office of Emergency Coordination 930 Wildwood, P.O. Box 570 Jefferson City, MO 65102 Paul V. Fleming, Director of Nuclear Safety Assurance Nebraska Public Power District P.O. Box 98 Brownville, NE 68321
Stewart B. Minahan 5 Electronic distribution by RIV:
Regional Administrator (EEC)
DRP Director (ATH)
DRS Director (DDC)
DRS Deputy Director (RJC1)
Senior Resident Inspector (NHT)
Branch Chief, DRP/C (MCH2)
Senior Project Engineer, DRP/C (WCW)
Team Leader, DRP/TSS (CJP)
RITS Coordinator (MSH3)
SUNSI Review Completed: __WCW__ ADAMS: Yes No Initials: _WCW__
Publicly Available Non-Publicly Available Sensitive Non-Sensitive R:\_REACTORS\CNS\2007\CNS assessment followup letter 103107.doc ML073040131 RIV:SPE:DRP/C C:DRP/C D:DRP WCWalker;amt MCHay ATHowell
/RA/ /RA/ /RA/
10/24/2007 10/24/2007 10/31/2007 OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax