ENS 54401

v t e ENS Event
02:44 Nov 21, 2019
Title	Unit 2 Auxiliary Feed Pumps Inoperable
Event Description	At 2144 EST, on 11/20/2019, all three auxiliary feedwater pumps for Unit 2 were declared Inoperable due to check valve leakage causing the turbine driven auxiliary feedwater pump to rotate backwards and subsequently trip. At this time, two of the Unit 1 motor driven auxiliary feedwater pumps were still able to provide cross-tied feedwater in the event of a design basis accident. At 2203 EST, the two motor driven auxiliary feedwater pumps on Unit 2 were declared operable once the discharge isolation valves for the turbine driven auxiliary feedwater pump were closed, thus preventing backflow through the turbine driven auxiliary feedwater pump and ensuring forward flow of the motor driven auxiliary feedwater pumps. This condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D) for an event or condition that could have prevented the fulfillment of a safety function. There is no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. Unit 2 is in a 72-hour LCO 3.6.F.1 for turbine driven auxiliary feedwater pump inoperability.

ENS 54401 +/-
Where
Surry Virginia (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:+1.3 h0.0542 days <br />0.00774 weeks <br />0.00178 months <br />)
Opened:	Joe Pollard 04:02 Nov 21, 2019
NRC Officer:	Bethany Cecere
Last Updated:	Nov 21, 2019
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v • d • e

v t e Emergency Notification System
Surry with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2019-11-21T02:44:00 [Table view]
[ENS list for Surry]

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