NRC CAL – NOV (White)

On June 9, 2009, a Notice of Violation was issued to Southern Nuclear Operating Company, Inc. for a violation associated with a White Significance Determination Finding involving a violation of 10 CFR Part 50, Appendix B, Criterion XVI, "Corrective Actions." Specifically, since 1988 the licensee had observed cracks in the glands of the emergency diesel generator (EDG) couplings, but did not recognize the cracking was an indication of coupling deterioration. This fact was not documented during routine maintenance inspections, therefore there was no condition report written to identify and correct the condition. Consequently, the 1B EDG coupling developed higher than normal vibration on July 12, 2008, during a routine surveillance test which prompted the licensee to declare the 1B EDG inoperable.