ENS 48009

v t e ENS Event
08:00 Jun 10, 2012
Title	Hpci Declared Inoperable Due to Leakage
Event Description	On Sunday June 10, 2012 at 0112 (Central Time), a through-wall leak was discovered on a piping elbow upstream of the High Pressure Coolant Injection (HPCI) Inlet Drain Pot Inboard Drain valve to the Main Condenser, AOV 3-2301-29. This piping elbow is safety-related, ASME Code Class 2 piping. Dresden Technical Requirements Manual 3.4.a, Condition B requires the leak to be isolated which renders the HPCI system inoperable. The Unit 3 HPCI system was isolated and declared inoperable at 0300 (Central Time), and Technical Specification 3.5.1 Condition G has been entered. The HPCI system is a single train system. The event is being reported pursuant to 10 CFR 50.72(b)(3)(v)(D), 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 mitigate the consequences of an accident. The licensee notified the NRC Resident Inspector.

ENS 48009 +/-
Where
Dresden Illinois (NRC Region 3)
Reporting

10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
Time - Person (Reporting Time:+2 h0.0833 days <br />0.0119 weeks <br />0.00274 months <br />)
Opened:	David Carrick 10:00 Jun 10, 2012
NRC Officer:	Dong Park
Last Updated:	Jun 10, 2012
48009 - NRC Website
v • d • e

v t e Emergency Notification System
Dresden with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2023-11-20T15:56:00 [Table view]
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