EA-17-122 · CAL · Issued 2017-10-16 · Reactor Licensees
Action
EA Number
EA-17-122
Licensee
NOV (White)
Category
Reactor Licensees
Action type
CAL
Date issued
2017-10-16
Description
On October, 16, 2017, the NRC issued a Notice of Violation to Duke Energy Corporation, for a violation of Technical Specification, 5.4.1.a, "Procedures," and Title 10 of the Code of Federal Regulations, Part 50, Appendix B, that were associated with a White Significance Determination Process finding at Catawba Nuclear Station, Unit 2. Specifically, the licensee failed to develop adequate preventive maintenance strategies for the emergency diesel generator (EDG) excitation system. As a result, a condition adverse to quality associated with elevated diode temperatures was uncorrected. This caused the 2A EDG output breaker to trip open during monthly surveillance testing.