ENS 52751

v t e ENS Event
13:30 May 14, 2017
Title	Single Flow Barrier Access Point Found Unbolted
Event Description	On May 14, 2017, with the Unit in Mode 4, it was identified that a single flow barrier access point (Gate C) to the 46 ft. elevation of Containment was unbolted for access to the inner crane wall to perform surveillance testing. This single flow barrier access point is required to be bolted closed to ensure the Emergency Core Cooling System (ECCS) operability basis which requires the sump barrier system to be operable in Modes 1- 4. The sump barrier system is required to prevent the transport of debris to the recirculation and containment sumps. This event is a safety system functional failure as the condition could have prevented adequate post-accident core cooling due to Design Basis Accident debris blockage of the recirculation and/or the containment sump and is reportable under 10 CFR 50.72(b)(3)(v)(D). The licensee notified the NRC Resident Inspector and the New York Public Service Commission.

ENS 52751 +/-
Where
Indian Point New York (NRC Region 1)
Reporting

10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
Time - Person (Reporting Time:+2.03 h0.0846 days <br />0.0121 weeks <br />0.00278 months <br />)
Opened:	Michael Mccarthy 15:32 May 14, 2017
NRC Officer:	Donald Norwood
Last Updated:	May 14, 2017
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v • d • e

v t e Emergency Notification System
Indian Point with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2018-09-07T04:00:00 [Table view]
[ENS list for Indian Point]

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