ENS 46440

v t e ENS Event
23:34 Nov 26, 2010
Title	High Pressure Coolant Injection Declared Inoperable Due to a Steam Leak
Event Description	While performing the High Pressure Coolant Injection (HPCI) high pressure run required by SR 3.5.1.6 following Unit 3 refueling outage D3R21, a steam leak developed from the HPCI turbine. The steam leak resulted in a HPCI room high temperature alarm and the HPCI turbine was manually tripped. The U3 HPCI system was declared inoperable and Tech Spec LCO 3.5.1 condition G.1 and G.2 were entered. The condition is being reported in accordance with 10 CFR 50.72 (b)(3)(v)(D) as a condition that at the time of discovery could have prevented the fulfillment of the safety function of a system that is needed to mitigate the consequences of an accident. Maintenance activities are currently in progress to restore system to operable status. The failure resulted in the licensee entering a 14-day LCO action statement for restoration. The licensee has notified the NRC Resident Inspector.

ENS 46440 +/-
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:+0.03 h0.00125 days <br />1.785714e-4 weeks <br />4.1094e-5 months <br />)
Opened:	Dan Miller 23:36 Nov 26, 2010
NRC Officer:	Howie Crouch
Last Updated:	Nov 26, 2010
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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
WEEKMONTHYEAR2025-11-17T22:13:00 [Table view]
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