ENS 43526

v t e ENS Event
22:06 Jul 26, 2007
Title	Accident Mitigation Report - Unit 2 Hpci Isolated Due to Small Bore Steam Leak
Event Description	At 1706 hours0.0197 days <br />0.474 hours <br />0.00282 weeks <br />6.49133e-4 months <br /> on 07/26/07, a through wall leak was identified on the U2 High Pressure Coolant Injection (HPCI) Inlet Drain Pot drain piping. This piping is ASME Code class 2 piping and as required by the Technical Requirements Manual the piping was isolated which resulted in isolation of the U2 HPCI System. U2 HPCI was declared inoperable. This event is reportable under 10CFR50.72(b)(3)(v)(D). Piping repair preparations are in progress. During the performance of operator rounds, the licensee noticed a puddle of fluid on the deck and wet lagging overhead. Upon removal of the lagging, the licensee noticed a small steam leak in a 1" small bore line. The licensee is currently in a 14 day LCO under technical specification 3.5.1 F(1) and F(2). The licensee is currently developing a work package to repair or replace the line. The licensee notified the NRC Resident Inspector.

ENS 43526 +/-
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:+-0.92 h-0.0383 days <br />-0.00548 weeks <br />-0.00126 months <br />)
Opened:	John Feigl 21:11 Jul 26, 2007
NRC Officer:	Joe O'Hara
Last Updated:	Jul 26, 2007
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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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