05000155/LER-1978-003, Forwards LER 78-003/01T-0

Forwards LER 78-003/01T-0

ML20031B882
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	02/01/1978
From:	Skibitsky W CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8110060182
Download: ML20031B882 (1)

LER-1978-003, Forwards LER 78-003/01T-0

Event date:
Report date:
1551978003R00 - NRC Website

text

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Redundant valve 0V -096 was verified :o neet leakage i

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A::sch:tn: to LIR-73-002-017-;

Conse:ers'?:ver Co.

8 31; Icck Poin: Plan:

Ouring leak tes:ing required each six =cn:hs for :::: sin =en: cc:ponen:s as di::a:ed by Technical Specifica:ica 2.7(a). the test pressure : uld no: be =rintained freve 1.s psi; during pressurising of the air space between :he two con:ain=ent air supply tal;es, C*.*/ C96 and C7/ C17. Valve C7/4096 vas :hr.a tested by use of a :es: flange and fe:er ined :: be acceptab'e for cain:aining c :: air. ent in:egri:7 The plan: had been shu: i:vn ;;i:: :

the incident for other unreis:ed repairs. ::o uncontrolled release occurred or sculd have cc:urrec > dace the redundan: talve vas opersble'during :he prict six-eca:h pericd.

The def ective condi: ion was corrected 07 read *usr:ent of the disc opera:or closing s::p and read;ust en: of :he disc flexible ring seal.

1 is pcstulated that a previous ring seal replace:ent may have been 1:;reperly d:ne with the disc sisaligned although the previous leak rate est was sa:isfac::r/. Align-

=ent = arks hav2 been provided on the valve operator and :he procedure for disc ring replacc:ent is being ex;anded to include disc ali;n=en: checka. ~here is no ::her vsive a: the plan: vich :he sa=e 0; era:or or iden:ical disc seal arrangement.

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