ENS 51066

v t e ENS Event
06:04 May 12, 2015
Title	High Pressure Coolant Injection Declared Inoperable
Event Description	On May 12, 2015, at 0104 CDT, during performance of 3-SR-3.3.6.1.2(3B), High Pressure Coolant Injection (HPCI) System Steam Supply Pressure Low Functional Test, an inadvertent PCIS Group 4 (HPCI) isolation occurred. All automatic actions occurred as designed. HPCI was declared inoperable and Technical Specification LCO 3.5.1.C was entered with required action to verify immediately that RCIC is operable administratively and to restore HPCI to operable within 14 days. HPCI was returned to service at 0125 CDT, declared operable and TS LCO 3.5.1.C was exited. The cause of the isolation is unknown with an investigation in progress. This condition is reportable as an 8-hour ENS notification under 10CFR 50.72(b)(3)(v)(D) due to the failure of a single train system affecting accident mitigation. This condition also requires a 60 day written report. The NRC Resident Inspector has been notified.

ENS 51066 +/-
Where
Browns Ferry Alabama (NRC Region 2)
Reporting

10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
Time - Person (Reporting Time:+3.07 h0.128 days <br />0.0183 weeks <br />0.00421 months <br />)
Opened:	Andrew Mitchell 09:08 May 12, 2015
NRC Officer:	Dong Park
Last Updated:	May 12, 2015
51066 - NRC Website
v • d • e

v t e Emergency Notification System
Browns Ferry with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2024-03-19T15:30:00 [Table view]
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