05000272/LER-1981-062-03, /03L-0:on 810621,following RHR Sys 11 Component Maint,One Emergency Core Cooling Subsystem Rendered Inoperable & Caused Refueling Water Storage Tank to Drain Below Limit.Caused by Improper Realignment of Three Valves

/03L-0:on 810621,following RHR Sys 11 Component Maint,One Emergency Core Cooling Subsystem Rendered Inoperable & Caused Refueling Water Storage Tank to Drain Below Limit.Caused by Improper Realignment of Three Valves

ML20009F018
Person / Time
Site:	Salem
Issue date:	07/20/1981
From:	Espey J Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20009F011	List: 05000272/LER-1981-062, Forwards LER 81-062/03l-0.Detailed Event Analysis Encl 05000272/LER-1981-062-03, /03L-0:on 810621,following RHR Sys 11 Component Maint,One Emergency Core Cooling Subsystem Rendered Inoperable & Caused Refueling Water Storage Tank to Drain Below Limit.Caused by Improper Realignment of Three Valves
References
LER-81-062-03L, LER-81-62-3L, NUDOCS 8107280608
Download: ML20009F018 (1)

LER-1981-062, /03L-0:on 810621,following RHR Sys 11 Component Maint,One Emergency Core Cooling Subsystem Rendered Inoperable & Caused Refueling Water Storage Tank to Drain Below Limit.Caused by Improper Realignment of Three Valves

Event date:
Report date:
2721981062R03 - NRC Website

text

U.S. NUCLE AR REGULATORY COMMISSION 0%C FORM 366 17 77)

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8 60 61 OcCKET NUMBER EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h After completion of maintenance on the No.11 Residual Heat Removal System components j 1O l2l l on June 20, 1981, the improper clearing of blocking tr.gs and realignment of the l

gl gl system rendered one emergency core cooling subsystem inoperable and caused the l

refueling water storage tank to drain to less than technical specu.ication limit of l

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lo Ic I l 350,ooo gallons.

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Vent valves 1RH72 and 1RH73 l

l g,gggl Three valves in the system were improperly realigned.

Isolation I

g,jij ; were left open and caused draining of the refueling water storage tank.

l valve llRH14 was left locked closed, causing an inoperable emergency core cooling l

Personnel were counseled on the importance of fulfilling their l

g,g3gg subsystem.

l g, g j g responsibilities, specifically, system realignments.

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I o l o l o l@ DESCRIPTION NUMBER l

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8 9 11 12 LOSS OF OR DAMAGE TO FACILITY TYPE

DESCRIPTION

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J. J. Espey PHONE: