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Event Notification Report for December 21, 2016

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
12/20/2016 - 12/21/2016

** EVENT NUMBERS **

52449

Power Reactor	Event Number: 52449
Facility: PILGRIM Region: 1 State: MA Unit: [1] [ ] [ ] RX Type: [1] GE-3 NRC Notified By: KEVIN P. O'ROURKE HQ OPS Officer: JEFF HERRERA	Notification Date: 12/20/2016 Notification Time: 19:45 [ET] Event Date: 12/20/2016 Event Time: 18:30 [EST] Last Update Date: 12/20/2016
Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(2)(xi) - OFFSITE NOTIFICATION	Person (Organization): JAMES NOGGLE (R1DO)

Unit	SCRAM Code	RX CRIT	Initial PWR	Initial RX Mode	Current PWR	Current RX Mode
1	N	N	0	Cold Shutdown	0	Cold Shutdown

Event Text

OFFSITE NOTIFICATION - RELEASE OF HYDROGEN GAS IN EXCESS OF THE REPORTABLE QUANTITY OF TEN POUNDS

"At 1830 EST on 20 December, 2016 the Massachusetts Department of Environmental Protection and the Plymouth Massachusetts Fire Department were notified of a Hydrogen release in accordance with plant procedures and 310CMR40.300, Massachusetts Contingency Plan Notification for Oil and Hazardous Material; Identification and Listing of Oil and Hazardous Material, due to a release of hydrogen gas to the environment exceeding the reportable quantity of ten pounds. The release, which is an expected part of a routine plant start-up was from the generator hydrogen cooling system.

"This event posed no danger to the health and safety of plant personnel or members of the general public.

"The NRC Resident Inspector has been notified."

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