05000305/LER-1981-023-03, /03L-0:on 810621,boric Acid Found Leaking from Instrument Isolation Valve CVC-11188.Caused by Leaking Diaphragm & Corroded Bonnet.Transfer Pump 1A Isolated & Bonnet Assembly Replaced

/03L-0:on 810621,boric Acid Found Leaking from Instrument Isolation Valve CVC-11188.Caused by Leaking Diaphragm & Corroded Bonnet.Transfer Pump 1A Isolated & Bonnet Assembly Replaced

ML20009E662
Person / Time
Site:	Kewaunee
Issue date:	07/21/1981
From:	Lindberg P, Molzahn D WISCONSIN PUBLIC SERVICE CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20009E648	List: 05000305/LER-1981-023, Forwards LER 81-023/03L-0 05000305/LER-1981-023-03, /03L-0:on 810621,boric Acid Found Leaking from Instrument Isolation Valve CVC-11188.Caused by Leaking Diaphragm & Corroded Bonnet.Transfer Pump 1A Isolated & Bonnet Assembly Replaced
References
LER-81-023-03L, LER-81-23-3L, NUDOCS 8107280343
Download: ML20009E662 (1)

LER-1981-023, /03L-0:on 810621,boric Acid Found Leaking from Instrument Isolation Valve CVC-11188.Caused by Leaking Diaphragm & Corroded Bonnet.Transfer Pump 1A Isolated & Bonnet Assembly Replaced

Event date:
Report date:
3051981023R03 - NRC Website

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(,tl 69 EVENT DATE 74 7b REPORT DAT E 80 EVENT DESCRIPTION AND PROBADLE CONSEQUENCES h

og2; l During steady state operation, an Auxiliary Operator reported boric acid leaking from l o., l Instrument Isolation Valve CVC-11188.

In order to repair the vdive, Boric Acid l

lo l4 i [ Transfer Pump 1A was isolated.

This action placed the facility under LCO T.S.3.2.c.2. l

o l3; g and is reportable per T.S. 6.92.b(2).

This event had no safety significance as the l

j l the other BA Transfer Pump was operable.

There was no effect on public health or l

o o o 7 l safety.

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3J CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l Af ter isol ting the BA Transfer Pump, Valve CVC - 11188 was inspected and found l

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i ;, j l to have a leaking diaphragra and a corroded bonnet.

The situation was remedied by l

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B A Transfer Pump 1A was back in service within l

T,S. time limits. No further corrective action is required.

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