ENS 47947

v t e ENS Event
15:55 May 22, 2012
Title	Hpci Declared Inoperable
Event Description	At 1055 hours0.0122 days <br />0.293 hours <br />0.00174 weeks <br />4.014275e-4 months <br /> [CDT] on 5/22/2012, a through-wall leak was discovered on the Unit 2 High Pressure Coolant Injection (HPCI) inlet drain pot piping. This is a 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 2 HPCI system was isolated and declared inoperable at 1141 CDT and Technical Specification 3.5.1 condition G was entered. The event is reportable 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 47947 +/-
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:+1.97 h0.0821 days <br />0.0117 weeks <br />0.0027 months <br />)
Opened:	Beth Jenkins 17:53 May 22, 2012
NRC Officer:	Dong Park
Last Updated:	May 22, 2012
47947 - 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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