ML072260119
| ML072260119 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 08/14/2007 |
| From: | Nick Hilton NRC/OE |
| To: | Nebraska Public Power District (NPPD) |
| Cai, June, OE, 415-5192 | |
| References | |
| EA-07-090 EN-07-049 | |
| Download: ML072260119 (2) | |
Text
August 14, 2007 EN-07-049 OFFICE OF ENFORCEMENT NOTIFICATION OF SIGNIFICANT ENFORCEMENT ACTION Licensee: Nebraska Public Power District EA-07-090 Cooper Nuclear Station Docket No. 50-298
Subject:
ISSUANCE OF FINAL SIGNIFICANCE DETERMINATION AND NOTICE OF VIOLATION This is to inform the Commission that a Notice of Violation associated with a White Significance Determination Process (SDP) finding will be issued on or around August 17, 2007, to Nebraska Public Power District as a result of inspections at the Cooper Nuclear Station. This White finding, an issue with low to moderate importance to safety, which may require additional NRC inspections, involves the failure to promptly identify that a defective Emergency Diesel Generator (EDG) voltage regulator circuit board was installed in EDG 2 on November 8, 2006.
A Notice of Violation is included based on a violation of 10 CFR Part 50, Appendix B, Criterion XVI, Corrective Action, that resulted in the reduced reliability of EDG 2. Two distinct and reasonable opportunities for the licensee to identify the condition adverse to quality existed yet the condition was not identified. Specifically, inadequate procedural guidance for evaluating the suitability of parts used in safety related applications presented one missed opportunity to identify that an EDG voltage regulator circuit board was defective prior to its installation on November 8, 2006. Following installation of the defective EDG 2 voltage regulator circuit board, two high voltage conditions, one resulting in an EDG automatic high voltage trip, occurred on November 13, 2006. The licensees evaluation of these high voltage events missed another opportunity to identify and correct the deficient condition. The failure to identify and correct this deficiency resulted in an additional high voltage trip of EDG 2 that occurred on January 18, 2007. In summary, contrary to the requirements under Criterion XVI, the licensee failed to (1) promptly identify that the voltage regulator circuit board was defective, (2) determine the cause of the significant condition adverse to quality, and (3) take corrective action to preclude repetition.
In accordance with the NRC Enforcement Policy, the Notice of Violation is considered an escalated enforcement action because it is associated with a White finding.
It should be noted that the licensee has not been specifically informed of the regulatory action.
The schedule of issuance and notification is:
Mailing of Final Significance Determination August 17, 2007 Telephone Notification of Licensee August 17, 2007 The State of Nebraska will be notified.
CONTACTS: June Cai, OE, 301-415-5192 John Wray, OE, 301-415-1288
Electronic Distribution: EN-07-049, August 14, 2007 OWFN OWFN TWFN Regional Offices Chairman Klein EDO OCFO RI RII Comm. McGaffigan DEDR OP CENTER RIII RIV Comm. Jaczko DEDMRT NMSS Comm. Lyons OE OIG SECY OGC OCIO MAIL OCA NRR RES PUBLIC PA NSIR ACRS OE staff IP OI FSME DISTRIBUTION: (Hard copy)
C. Carpenter S. Magruder J. Cai J. Wray N. Hilton OE r/f EA-07-090 File EN binder XPUBLIC X NON-SENSITIVE ML072260119 OFFICE OE:ES OE:ES OE:BC NAME JCai JWray NHilton DATE 08/13/07 08/13/07 08/14/07 OFFICIAL RECORD COPY