ENS 48966

v t e ENS Event
18:25 Apr 18, 2013
Title	Low Pressure Core Spray Inoperable
Event Description	On 4/18/2013, while attempting to raise Unit 1 reactor level with the Low Pressure Core Spray (LPCS) system, LPCS injection valve 1E21-F005 failed to open as required when the associated control switch was held in the 'OPEN' position. The Unit Supervisor declared the LPCS system inoperable, and the appropriate Technical Specification time clocks were entered. Troubleshooting determined that the problem was a faulty control switch. The control switch has been replaced and LPCS returned to an operable status. Initial review of this event determined that it was not reportable; however, subsequent review caused the event to be re-evaluated and classified as reportable under 10CFR50.72(b)(3)(v)(D) and 50.73(a)(2)(v)(D) as an event or condition that could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident. The station is continuing to evaluate the reportability of this event. The licensee notified the NRC Resident Inspector.

ENS 48966 +/-
Where
Lasalle 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:+161.97 h6.749 days <br />0.964 weeks <br />0.222 months <br />)
Opened:	Michael Fitzpatrick 12:23 Apr 25, 2013
NRC Officer:	Donald Norwood
Last Updated:	Apr 25, 2013
48966 - NRC Website
v • d • e

v t e Emergency Notification System
LaSalle with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
WEEKMONTHYEAR2023-04-17T07:46:00 [Table view]
[ENS list for LaSalle]

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