ML20107C882
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To:
Jsac$ P, O'Reilly Directorate of Regulatory Operations Region f 631 Park Avenue King of Prussia, Pennsylvania.
19406 1
Jersey Central Power.4 Light company From:
Docket #50-219 Oyster Creek Nucicar Concrating Station Forked River, Xew Jersey 08731
Subject:
Abnormal Occurrence Report No. 50-219/74/ 1 i j The following is a preliminary report being submitted in compliance with the Technical specifications paragraph 6.6.2.
Preliminary Approval:
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. T. Carroll, Jr.[
Date cc: Mr. A. Giambusso b
9604180048 960213 PDR FOIA DEKOK95-258 PDR
Report. No. 50 239/74/13 v@Gny
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cleanup isolation signal should have been present at this time
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due to a high pressure condition on pressure pitchMg/#f, Dis,.
Switch, set to actuate at 140 psig, is located upstream of the pressure relief valve, Ordinarily isolation valves V-16-1 and V-16-14 would have gone closed under these circumstance.<
How-ever, since the tireinker to V-16-1 was open, closure was impos-sible. Vnive V-16-14 failed to close automatically and an un-successful sttempt was ande to close it by placing the valve position selector switch to the close position.
Approximately'five minutes after returning the selector switch for V-16-14 to the open (automatic closure) position, the valve closed. The breaker for V-16-1 was reclosed and valve closure was achieved when the scicetor switch was placed in the close positi on.
i APPARP.NT CAUSE Design Procedure 0F OCCURRENCE:
Manufacturt
~ ~ ~ Unusual Service Condition
_ installation /
Inc. Environmental Construction Component Failuro Operator
_ Other (Specify) m -
The cause of Valve V-16-1 failing to isolate is attributable to the inadvertent opening of its associated breaker. The cause for V-16-14 failing to isoiste is presently under investigation.
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I initial Written Time ci~
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- Report Dato 2/19/7 Occurrence!
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01fSTER CREEK NUCLEAR C6HERAT1HC STATION FORKED RIVER, NEW JERSEY 08731 Abnorwal occurrence l
Report No. 50-219/74/g l
' Violation of the Technical Specifications, paragraph 3.5. A.1,,
IDENTIFICATION when the cleanup system AC isolation valve V-16-1 became inop-OF OCCORRENCEr erabic with the reactor critical and the coolant temperature l
,above 212*P. In *ddition, violation of the Technical Specifi-cation Tabic 3.1.1-F.2, when'the cicanup system DC isolation l
l valve V 16-14 failed to"close when called upon to do so.
This event is considered to be an abnormal occurrence as de-fined in the Technical Specifications, paragraph 8 1.15B 6 D.
CdNDITIONS PRIOR TO OCCURRENCE:
X Steady state Power Routiae Shutdown
~ Hot Standby Operation Cold Shutdown
_ Load Changes During Refueling Shutdown Routine Power Operation l
l Routine Startup Other (Specify)
Operation Power: Renctor,1895 MWt l
i Elec., 671 MWc Flow: Recirc., 57.6' x 10' lb/hr Pced., 7.0R x 10' lb/hr Stack Cast 29,329 pCi/sce DESCRIPTIO On Monday, February 18,1974, at 1120, the breaker for the mt
..m cleanup system automatic isolation valvo V-16-1.was accidently tripped which consequently caused the cleanup recycle ptmp ND02A to trip. As pressure increased in the system piping, due in part to pressure reducing valve Nin11 failing to control pressure, the pressure downstream of ND-11 increased above the ciennup to torus relief valve setpoint of 150 psig. An automatic 4
Abntraaivccurrence.
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Report Na, 50-219/70/13.
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,.. e ANAINS15 0F Since both cleanup system isolation valvos were inoperable or 00CURRENCli:
malfunctioned during this event had a loss of coolant accident occurrod generating a Lo-Lo reactor water level condition, the cleanup system would not have isolated. This is only significant
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if there is also.a leak in the cleanup systen loop in which case f
a non isolable leak of reactor coolant into the secondary con-i.,
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2 t.ninment would have been created, It should be noted that after rcciospng the brcsker for.V 16-1 1$91stion would have occurred, t
The breaker for Valve V-16-1 was roenergized, thereby reenabling CORRECTIVE ACTION:
its isolating capabilities, No ' corrective action was taken for
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V-16-14 '.u it appeared to be functioning normally.
l FAILURE DATA:
Not applicabic.
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Prepared by[
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