05000325/LER-1981-001-01, /01T-0:on 810103,feed Pump Tripped on High Vessel Level Due to safety-relief Valve B21-F013G,Model 67F,lift. Caused by High Second Stage & Pilot Leakage in Valve.Pilot Valve Temporarily Replaced Until Next Scheduled Outage

/01T-0:on 810103,feed Pump Tripped on High Vessel Level Due to safety-relief Valve B21-F013G,Model 67F,lift. Caused by High Second Stage & Pilot Leakage in Valve.Pilot Valve Temporarily Replaced Until Next Scheduled Outage

ML19341A220
Person / Time
Site:	Brunswick
Issue date:	01/14/1981
From:	Poulk R CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19341A219	List: 05000325/LER-1981-001, Forwards LER 81-001/01T-0 05000325/LER-1981-001-01, /01T-0:on 810103,feed Pump Tripped on High Vessel Level Due to safety-relief Valve B21-F013G,Model 67F,lift. Caused by High Second Stage & Pilot Leakage in Valve.Pilot Valve Temporarily Replaced Until Next Scheduled Outage
References
LER-81-001-01T, LER-81-1-1T, NUDOCS 8101220402
Download: ML19341A220 (1)

LER-1981-001, /01T-0:on 810103,feed Pump Tripped on High Vessel Level Due to safety-relief Valve B21-F013G,Model 67F,lift. Caused by High Second Stage & Pilot Leakage in Valve.Pilot Valve Temporarily Replaced Until Next Scheduled Outage

Event date:
Report date:
3251981001R01 - NRC Website

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60 61 DOCKET Nuv8ER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCFIPTION AND PROBABLE CONSEQUENCES h O 2 lDuring a normal reactor sr.artup and heatup, safety-relief valve B21-F013C. Model 67F. I l lifted at 717 psig and rescated three minutes later at 465 psig.

Right after seatina,1 O 3 lthe valve again opened but immediately reclosed. Due to this event, the resultine I

0 4 [TTTl l swell created by the pressure reduction, caused the feed pump to trip on high vessel l

lTTs'] l level (+58 inches), which resulted in a reactor scram on low level (+12.5 inches).

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