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Nuclear Event – Potential Uncontrolled Radiation Release: Susquehanna Nuclear Power Plant, Pennsylvania

2016/04/07

North America – USA | State of Pennsylvania, Berwick – Susquehanna Nuclear Power Plant
Location: 41°05’20.0″N 76°08’56.0″W
Present Operational Age: ~34 years
Emergency Level: POT UNCNTRL RAD REL

Susquehanna Steam Electric Station

Susquehanna Steam Electric Station. Salem Township, Luzerne County, PA (70 miles NE of Harrisburg, PA) in Region I. Image: Wikimedia Commons

Nuclear Event in USA on Wednesday, 06 April, 2016 at 13:37 [EDT]

REACTOR BUILDING AIRLOCK DOORS OPENED SIMULTANEOUSLY

“On April 6th, 2016 at 1337 [EDT] and 1343 [EDT] Secondary Containment became inoperable due to failure to meet a Surveillance Requirement (SR 3.6.4.1.3) on Unit 1 and Unit 2.

“The inoperability was caused when two separate sets of Reactor Building airlock doors were sequentially opened during a medical emergency to transport an individual. Each set of airlock doors was opened momentarily to allow passage.

“Secondary Containment was restored April 6, 2016 at 1344 [EDT] when the transport evolution was complete.

“This event is being reported under 10 CFR 50.72(b)(3)(v)(c) and per the guidance of NUREG 1022 Rev 3 section 3.2.7 as a loss of a Safety Function. There is no redundant Susquehanna Secondary Containment system.”

The NRC Resident Inspector has been notified.

Source: NRC  Event Number: 51851


Previous Event Notifications

Tuesday, 29 March, 2016 at 22:56 [EDT]
LOSS OF SECONDARY CONTAINMENT DIFFERENTIAL PRESSURE

Wednesday, 02 March, 2016 at 13:30 [EST].
SECONDARY CONTAINMENT INOPERABLE

Sunday, 06 December, 2015 at 03:50 [EST].
LOSS OF SECONDARY CONTAINMENT DIFFERENTIAL PRESSURE DUE TO ICING OF INTAKE SUPPLY PLENUM SCREENS

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