ENS 51409

v t e ENS Event
18:08 Sep 18, 2015
Title	Equipment Failure Results in Inoperable Secondary Containment
Event Description	At 1408 EDT on 9/18/2015, Secondary Containment Refuel Floor exhaust flow degraded due to an equipment malfunction in the running Refuel Floor exhaust train. The degraded exhaust flow caused Secondary Containment differential pressure to go positive for approximately three minutes, resulting in Secondary Containment being declared inoperable. Corrective action to start the Stand-by Gas Treatment System and the alternate Refuel Floor exhaust train restored Secondary Containment operable by re-establishing its required negative differential pressure. This event is being reported under 10 CFR 50.72(b)(3)(v)(C) and per the guidance of NUREG-1022, Rev. 3, 'Any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to control the release of radioactive material.' The Duty Team has been activated to develop a repair plan. The NRC Resident Inspector has been notified.

ENS 51409 +/-
Where
FitzPatrick New York (NRC Region 1)
Reporting

10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material
LER:	05000333/LER-2015-005 Regarding Damper Failure Leads to Secondary Containment Vacuum Below Technical Specification Limit
Time - Person (Reporting Time:+-0.12 h-0.005 days <br />-7.142857e-4 weeks <br />-1.64376e-4 months <br />)
Opened:	Martin Newshan 18:01 Sep 18, 2015
NRC Officer:	Dong Park
Last Updated:	Sep 18, 2015
51409 - NRC Website Loading map...
v • d • e

v t e Emergency Notification System
FitzPatrick with 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material
WEEKMONTHYEAR2019-01-16T05:00:00 [Table view]
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