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Event Notification Report for April 13, 2016

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
04/12/2016 - 04/13/2016

** EVENT NUMBERS **


51862 51863

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Power Reactor Event Number: 51862
Facility: PILGRIM
Region: 1 State: MA
Unit: [1] [ ] [ ]
RX Type: [1] GE-3
NRC Notified By: MIKE MCDONNELL
HQ OPS Officer: JEFF HERRERA
Notification Date: 04/12/2016
Notification Time: 07:47 [ET]
Event Date: 04/12/2016
Event Time: 00:50 [EDT]
Last Update Date: 04/12/2016
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
JOHN ROGGE (R1DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation

Event Text

LOSS OF BOTH EMERGENCY DIESEL GENERATORS

"On April 12, 2016, with the reactor at 100 percent power and the mode switch in RUN, Pilgrim Nuclear Power Station entered an unplanned 24-hour Limiting Condition for Operation (LCO) action statement due to both emergency diesel generators (EDG) being inoperable (Technical Specification 3.5.F.1). At 0050 [EDT] this morning, with EDG B out of service for a planned LCO maintenance window, EDG A was declared inoperable due to a 130 drop per minute leak on a line to a jacket water pressure indicator.

"Repairs to EDG A are underway at this time.

"The following plant equipment has been verified operable: both 345 Kv transmission lines; 23kV transmission line; Station Blackout EDG.

"This condition is reportable to the NRC Staff as an Event or Condition that Could Have prevented Fulfillment of a Safety Function (Mitigate the consequences of an accident) under 10 CFR 50.72(b)(3)(v)(D), and requires an 8-hour notification.

"The licensee has notified the NRC Senior Resident Inspector.

"The licensee will notify the Commonwealth of Massachusetts."

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Power Reactor Event Number: 51863
Facility: DUANE ARNOLD
Region: 3 State: IA
Unit: [1] [ ] [ ]
RX Type: [1] GE-4
NRC Notified By: BOB MURRELL
HQ OPS Officer: JOHN SHOEMAKER
Notification Date: 04/12/2016
Notification Time: 14:36 [ET]
Event Date: 04/12/2016
Event Time: 12:35 [CDT]
Last Update Date: 04/12/2016
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
AARON McCRAW (R3DO)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation

Event Text

COURTESY OFFSITE NOTIFICATION MADE TO STATE AND COUNTY OFFICIALS

"On April 12, at 1235 CDT, Duane Arnold Energy Center contacted officials with the State of Iowa (Bureau of Radiological Health and Department of Natural Resources) and Linn County Public Health Department in accordance with the nuclear industry voluntary reporting criteria contained in NEI 07-07 'Industry Ground Water Protection Initiative'. The site contacted the agencies as courtesy to notify them about the identification of low levels of tritium found within the site's protected area from a potential new source. Samples were taken, and no regulatory limits were exceeded. The site team is working with industry experts on pinpointing the cause and installing an extraction well to remediate the situation.

"This report is being made in accordance with 10 CFR 50.72(b)(2)(xi), as a result of notification to offsite agencies.

"The Licensee has notified the NRC Resident Inspectors.

"There is no risk to plant employees, the public or drinking water."

Page Last Reviewed/Updated Wednesday, April 13, 2016
Wednesday, April 13, 2016