ML20203J771
| ML20203J771 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 12/17/1997 |
| From: | Howell A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Horn G NEBRASKA PUBLIC POWER DISTRICT |
| Shared Package | |
| ML20203J774 | List: |
| References | |
| 50-298-97-18, NUDOCS 9712220087 | |
| Download: ML20203J771 (5) | |
See also: IR 05000298/1997018
Text
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...+ December 17,1997 G. R. Horn, Senior Vice President of Energy Supply Netraska Public Power District 141415th Street Columbus, Nebraska 66601 SUBJECT: NRC INSPECTION REPORT 50-298/97-18 Dear Mr. Horn: An NRC inspection was conducted October 20 through November 17,1997, at your Cooper Nuclear Station facility. The enclosed report presents the results of that inspection. The inspection reviewed the circumstances and implications of your failure to implement a preventive maintenance program that conformed to vendor and industry standards for certain safety-related electrical circuit breakers. Additionally, the inspection examined the adequacy of the calculations that support the operability of the station batteries. Two unresolved items were identified during the inspection. The first item pertains to the adequacy of the preventive maintenance program associated with safety-related electrical circuit breakers and is discussed in Sections M2.1 and M2.3 of the enclosed inspection report. The second item is related to the overall adequacy of the station 125Vdc load and voltage study, including battery surveillance 4160 circuit breaker acceptance criteria, and is discussed in Section E2.1 of the report. These items remain unresolved due to the fact that the NRC does not have sufficient information at the present time to appropriately characterize the findings ascociated with theoe issues from a regulatory perspective. We recognize that you believe the aforementioned breakers and 125Vdc system to be operable. However, the NRC views these matters as significant in that potential common-cause failures of safety-related circuit breakers or inadequacies in the station batteries can have safety implications. You are requested to provide us within 30 days of this letter, a schedule for completing the root- cause assessment associated with the failure to implement an effective preventive maintenarne program on the safety-related breakers, as well as, your plans to complete the necessary equipment overhauls. Additionally, we request that you provide us an explanation of your plans to revise the 125Vdc load and voltage study. We will conduct followup inspection activities in the future in order to finalize our assessment of these issues. I'lllilll!!JLllll l 9712220007 971217 ' ' ** POR ADOCK 05000298 G PDR
._ . .. . - . - . .. ._.. - - _ . - . __. __ __ - _ . . _ _ . _ _ _ . ' . .. Nebraska Public Power District 2- , in accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter, its enclosure, and your response will be placed in the NRC Public Document Room (PDR). To the extent possible, your response should not include any personal privacy, proprietary, or - safeguards information so that it can be placed in the PDR without redaction. Should you have any questions concerning this inspection, we will be pleased to discuss them with you. Sincerely, Art T. Howell Ill, Director Division of Reactor Safety Docket No.: 50-298 License No.: DPR-46 Enclosure: NRC Inspection Report 50-298/97-18 , , cc w/ enclosure: John R. McPhail, General Counsel Nebraska Public Power Distric' P.O. Box 499 Columbus, Nebraska 68602-0499 P. D. Graham, Vice President of Nuclear Energy Nebraska Public Power District P.O. Box 98 Brownville, Nebraska 68321 8. L. Houston, Nuclear Licensing and Safety Manager Nebraska Pubke Power District P.O.' Box 98 Brownville, Nebraska 68321 - , ' e e w w x w w . - , . .- ._ _,
. c 7. . . _ . . . - _ _. -, _ + - , , .: Nebraska Public Power District: 3- 1 Dr. William D. Leech MidAmerican Energy _ 907 Walnut Street - P.O. Box 657 Des Moines, Iowa 50303-0657
- Mr, Ron Stoddard:-
Lincoln Electric System 11th and O Streets. Lincoln, Nebraska- 68508 - Randolph Wood, Director . - . Nebraska Department of Environmental - Quality P.0L Box 98922- - Lincoln, Nebraska 68509-8922 _ Chairman f Nemaha County Board of Commissioners Nemaha County Courthouse > 1824 N Street Auburn, Nebraska 68305 < Cheryl Rogers, LLRW Program Manager ' Environmental Protection Section
Nebraska Department of Health ,
- 301 Centennial Mall, South
P.O. Boy 95007 Lincoln, Nebraska 68509 5007 R. A. Kucera, Department Director , of 1,/.argovernmental Cwperation Department of Natural Resources P.O. Box 176 - Jefferson City, Missouri 65102 Kansas Radiation Control Program Director & , l e i , . - - . . . _ _ . - .
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