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Event Notification Report for February 3, 2005

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
02/01/2005 - 02/03/2005

** EVENT NUMBERS **


41365 41366

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Power Reactor Event Number: 41365
Facility: SALEM
Region: 1 State: NJ
Unit: [1] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: JOHN KONOVALCHICK
HQ OPS Officer: MIKE RIPLEY
Notification Date: 02/02/2005
Notification Time: 14:25 [ET]
Event Date: 02/02/2005
Event Time: 10:34 [EST]
Last Update Date: 02/02/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
TODD JACKSON (R1)

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

Event Text

OFFSITE NOTIFICATIONS DUE TO OIL SHEEN ON THE DELAWARE RIVER

"A report was made to the New Jersey Department of Environmental Protection (NJDEP) and the National Response Center (NRC) when a light sheen of oil was observed on the Delaware River at the south end of Artificial Island. Chemistry personnel first observed the sheen during a routine oil water separator system walk-down at 1034 hours on February 2, 2005. The oil water separator system was immediately shut down. The amount of oil that produced the sheen is estimated to be approximately two ounces. Site personnel responded and deployed an absorbent oil boom. At the present time, site personnel are investigating whether the oil sheen originated from the site oil water separator system or was residual from the November 2004 Delaware River oil spill.

"This event is being reported in accordance with 10CFR50.72(b)(2)(xi)"

The licensee notified the NRC Resident Inspector.

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Power Reactor Event Number: 41366
Facility: LASALLE
Region: 3 State: IL
Unit: [1] [2] [ ]
RX Type: [1] GE-5,[2] GE-5
NRC Notified By: HAROLD VINYARD
HQ OPS Officer: MIKE RIPLEY
Notification Date: 02/02/2005
Notification Time: 20:59 [ET]
Event Date: 02/02/2005
Event Time: 15:42 [CST]
Last Update Date: 02/02/2005
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
Person (Organization):
BRUCE BURGESS (R3)
CORNELIUS HOLDEN (NRR)

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

Event Text

SINGLE FAILURE VULNURABILITY IN AC AUXILIARY POWER SYSTEM

"This report is being made pursuant to 10CFR50.72(b)(3)(ii)(B). At 15:42 on 02/02/05 while reviewing Operation Experience from another Nuclear Site, it was discovered that the design of the AC Auxiliary Power System incorporates a common circuit which could result in a bus lockout preventing the re-energization of both the Division 1 and Division 2 Essential Safety Feature (ESF) buses from either onsite or offsite power sources due to a single failure in the common portion of the circuitry. This common circuit includes various metering circuits such as System Auxiliary Transformer Wattmeters and Ammeters. Also connected to these metering loops are ground fault devices that feed breaker lockout relays. Should a failure occur on these common circuits, all breakers supplying power to these ESF Buses would be opened, locked out, and prevented from reclosure onto the buses.

"Due to the loss of the ability to accommodate a single failure, one offsite power source and one onsite Diesel Generator have been declared inoperable and Technical Specification 3.8.1 Condition A, Condition B, and Condition E entered. Corrective actions are in progress to isolate the common circuit and eliminate the single point vulnerability."

The licensee notified the NRC Resident Inspector.

Page Last Reviewed/Updated Friday, March 30, 2012
Friday, March 30, 2012