ML20151C144
| ML20151C144 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 01/17/1974 |
| From: | Onoguauy C JERSEY CENTRAL POWER & LIGHT CO. |
| To: | |
| References | |
| AO-50-219-74-5, NUDOCS 8103040616 | |
| Download: ML20151C144 (2) | |
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Violt. tion of the Techni ce.l. 5pecifications, psragraph i.b.Y,').d, 3
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failuro of MaintSteam Isolat. ion Valve.HSO4A to meet the alle.:-
able lethago requirencnts.
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Tnis event t5.contiderea to be nn nbnormal occurrence.crade-finod in the Technical Specifications, parag: aph
. ).1 !.B CONDIT.'OR PrJOR TO 00Cu.0 1N G :
Ptes.dy State. Power Routins Shutdown-lict Srendl;y Open.tlon T._ Cold Shutdown
_ Load Channen Duri ng Refueling Shutdown Routine Pouer Operttic;n Operation
_ Other (Specify)
Routine Startup.
The plant was shutdown with the feat: tor ecolialt et <212'F.
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DESCRIPr101 144 7 - beak rat e t. cst on 1.hin Ste:m Isolation Valve R$0' A bcrm.
0F OXOWiR(T.:
1517
. Lef& rete test on liain Steam isolation Yalve k'SO4A e ded, Leukof;c rate wts equivalent to 31.7 SClH. The muit.um a1101.:ahie
)cnkage rate is 9.945 SCrd, as required by Technica) Spe ci fi ca-110n, PDTHETUf.!h 4,I1.F,3,d'
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-,tonstruction X
Cmponent h. ilurc i
Operntor Other (Specify)
Aft c7 ch ec) in f. Th e t est ns!c63y itnd the components of the
}GIV, it W:w r' Uter:::ined that the pachiro; around the valve shaft. wits the cause of the c>.ceasive led rote,
/J:'.LYEIS OF The ;sfety.;ignific;mcc of the fdlure of HSO4 A li. dependient OCCUPIIUCE:
on the condition of the inside valve NS03A. NS05A vae; con-sidered to have an acceptable les):sge rats (2.0 SCfri) 1: hen te.ned on knuhrv 13, 1974, However,11 : validity of the ter,t is questionable since the testing procedure e suns niniral Acrango through N304A.
Tne safet.y signifi cance will be eval-un ed foIIowing n retc t of R$03A.
(Or'.r.J:CT!t.'ii Thu walve @ ft vp reps.ched and the valve was rotested sue.-
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- essfully, N5!!3A will be rotested to insure that it he.s an
' acceptable Insk rate, l
i FAI LW.rt DATA:
The valve sten psching on NSO4A failed on Septcicer 27, 1973 Tni F. V D l v 0 W H.N reputkcd imd pdSSed it3 leih rate test.
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