EA-17-098 · CAL · Issued 2017-11-27 · Reactor Licensees
Action
EA Number
EA-17-098
Licensee
NOV (White)
Category
Reactor Licensees
Action type
CAL
Date issued
2017-11-27
Description
On November 27, 2017, the NRC issued a Notice of Violation to Exelon Generation Company (Exelon) for a violation of Title 10 of the Code of Federal Regulations Part 50, Appendix B, Criterion III at Clinton Power Station, associated with a White Significance Determination Process finding. Contrary to the requirements, Exelon failed to review for suitability of application replacement relays essential to the safety-related functions of the Division 1 Emergency Diesel Generator (EDG) Room Ventilation Fan. Specifically, Exelon failed to evaluate the change in the actual drop out voltages for replacement relays associated with the Division 1 EDG Room Ventilation Fan resulting in the safety-related fan becoming inoperable during undervoltage conditions. Additionally, there is an associated violation of Technical Specification 3.8.1, "AC Sources-Operating," for one Standby Diesel Generator being inoperable for greater than the allowed outage time of 14 days.