ENS 45779

v t e ENS Event
16:43 Mar 15, 2010
Title	Inadvertent Start of Emergency Diesel Generator
Event Description	At 12:43 on Monday, March 15, 2010, the 103 Emergency Diesel Generator (EDG) was inadvertently started during standby circuit checks. The standby circuit checks test was a planned evolution that was not intended to cause a start of the EDG. Following the start of the EDG, the standby circuit check test was stopped and the running checks for the diesel were completed satisfactory at 12:50. The EDG was secured at 13:03, after functioning successfully. The EDG was not started by a valid initiation signal. A valid initiation signal is degraded or loss of voltage to the Power Board (PB) 103. Also, the EDG output breaker did not close since the PB 103 was not deenergized. This event is not considered an LER. This report is being made under 10 CFR 50.73(a)(2)(iv)(A) (requires reporting within 60 days when a event or condition that resulted in manual or automatic actuation of the EDG AC Electrical Power Systems, including EDG System occurs.) EDG 103 is the train that actuated. EDG 103 actuation was not complete since breaker did not close. EDG 103 started and remained operable throughout the event; output breaker would have closed and supplied PB 103 if required. The event has been entered into the corrective action program. There are no other adverse impacts to the station based on this event.

ENS 45779 +/-
Where
Nine Mile Point New York (NRC Region 1)
Reporting

10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation
Time - Person (Reporting Time:+93.4 h3.892 days <br />0.556 weeks <br />0.128 months <br />)
Opened:	Quentin Hicks 14:07 Mar 19, 2010
NRC Officer:	John Knoke
Last Updated:	Mar 19, 2010
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v • d • e

v t e Emergency Notification System
Nine Mile Point with 10 CFR 50.73(a)(1), Submit an LER
WEEKMONTHYEAR2018-03-19T04:00:00 [Table view]
[ENS list for Nine Mile Point]

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