ML20052F898

LER 82-003:on 820204,during Steady State Operation,Cleanup Sludge Tank Vent Overflowed Into Reactor Bldg Exhaust Ventilation Sys Causing Emergency Ventilation Sys to Initiate.Cause Not Stated.Decontamination in Progress

ML20052F898
Person / Time
Site:	Nine Mile Point
Issue date:	02/05/1982
From:	Perkins T NIAGARA MOHAWK POWER CORP.
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-82-003, LER-82-3, NUDOCS 8205140113
Download: ML20052F898 (2)

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fro:a: liiagara Mohawk Power Corporation IC: Ronald C. lisynes.  !!ine Mile Point fluclear Station Recionni Ad.ini.tratar Unit (1 US?:PC Region I P.O. Box (3?

631 Park Avenue Lycoming,1:ew York 13093 Ring of Prussia, PA. 19406 Si;'-JECT : PFC'.P1 REF0ETAELE OCCURREliCE DOCKET f;0. 50-??0 LICDISE 110. DPR-63 ASSIGtiED LER fiD. 82-03 _

REPOP.T DATE: 2/5/82 _

EVEtiT DATE: _

2/4/s2 __

EVE!;T DESCRIPTIO'l:

SEE ATTACINEAT Ire m ncy Ventilation System CL 'Q:iEf.75 iliVOLVED: ,

CriSE I*iD R!h0! AL ACTION: -

SEI 'ATTArtNIhI I THERi%t FN jet _

flEitilY STATUS:

g) Shutdown c) Routine Startup Refueling h) d) Reutine Shuttmen c) Steady State Oper __ 1 i) Other

!;ot ATPlici.ble j) _

f) Load Change A ..ritten f ol10. -rp rt p:' t v;i*si !.e sent within !UD iciels.

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l 8205140113 820205 PDR ADOCK 03000220 _;p ,pril 19 9 S paa ,

4 LLR 82-03 ATTAGNIXI

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irentJkscrijtion Cleanup sludge tank vent overfloved into Reactor building Exhaust Ventilation Systes causing en.ergency ventilation systen to initiate.

Cause and Eenedial Action During nortal backwash of cleanup filter to cleanup filter sludge tank, the tant overflowed through the vent to the Reactor Building Exhaust Ventilation Syste:. The energency ventilation systen initiated 5i high radiation in the reactorbuildingexhaustductandnormalexhaustventilationisolated.

Decontanination of exhaust ductwork is in progress.

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