ENS 40996

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v t e ENS Event
23:28 Aug 29, 2004
Title	Alarm Indication of Inoperable Reactor Water Cleanup Supply Isolation Valve
Event Description	On 08/29/04 at 1928 hours0.0223 days <br />0.536 hours <br />0.00319 weeks <br />7.33604e-4 months <br /> [EDT], an alarm was received in the control room indicating the reactor water cleanup (RWCU) high differential flow isolation channel for the outboard RWCU supply isolation valve was inoperable. At the time, the channel functional test for the inboard RWCU high differential flow isolation channel was being performed. During the channel functional test, power to the inboard isolation valve is removed to permit continued RWCU system operation while the isolation function is tested. With the outboard isolation actuation instrumentation channel inoperable and the inboard isolation valve deenergized, in the event of a break in the RWCU system, the required isolation function may not be completed. This event is being reported in accordance with 10CFR50.72(b)(3)(v)(C) as a condition that could have prevented the fulfillment of a safety function. In accordance with Technical Specification requirements, the RWCU system was removed from service and the inboard and outboard supply Isolation valves were closed. There is no immediate impact on water chemistry and the licensee is investigating the cause of the original failure as well as possible long term degradation of the reactor water chemistry. The licensee notified the NRC Resident Inspector and will notify the local township authorities of this incident.

ENS 40996 +/-
Where
Hope Creek New Jersey (NRC Region 1)
Reporting

10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material
Time - Person (Reporting Time:+3.43 h0.143 days <br />0.0204 weeks <br />0.0047 months <br />)
Opened:	Art Bready 02:54 Aug 30, 2004
NRC Officer:	Arlon Costa
Last Updated:	Aug 30, 2004
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v • d • e

v t e Emergency Notification System
Hope Creek with 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material
WEEKMONTHYEAR2015-07-28T17:58:00 [Table view]
[ENS list for Hope Creek]

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