ML19208B805
Text
UCENSEE EVENT REPORT Palisades CONTROL BLCCK:l l
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l (PLEASE PRINT ALL REQUIRED INFORMATION]
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ME UCENSE NUMBEA TY TY
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' Ml I plAlLl1 l 0 l 0 l-l0 l 0 l 0 l 0 l 0 l-l 0 l 0 l lkl1 1l1l1 0l1l 7
14 15 25 ES 30 31 32 REPCRT AEPCAT SOUACE CCCXET NUMBER EVENT CATE REPCAT CATE O 1 CONT l
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l0 l 5 l 0 l-l O l 2l 5l Sl l 0 l 911l 6 l Tl 7l l0 lo l 3 l 0l7 l7 l 7 8 57 58 80 81 88 89 74 75 80 EVENT CESCRIPTION l Investigation has revealed that loss of the air supply to the containment building l
O 2 89 80 g l purge isolation valves (CV-18p^ef r8%,1806,1807,1813 and 1814) vill result in l
Oj4 depressuriCation of the ladders which could cause loss of contain=ent in-89
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y 80
@ l tegrity.
This failure mode had not been censidered in the FSAR.
Seal-.oress1mes*
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89 80 Q l are.being checked once-ter shift' 'ts ~ verify' operability Tof seal bladder air-sunnly. -
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p=E ~'
( ER--77-Oh5 ) -
80 "T
CO CCMPCNENT CCCE MANuF
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lAl lc l5 l8 l7 l Nl 89 10 1
12 17 43 44 47 CAUSE DESCRIPTION Q l The valves (Continental Equip / Type 9220) are not provided with a redundant air supply l 89 80
] l to =aintain seal pressure.
A redundant air source vill be trovided as soon as l
489 80
,1 fear Cle.
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' NT o"T><En status 6EvEAv s
s powEn CsCCvEAv CESCmpTiCN
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lEl l1l0l0l l
N/A l W N/A l
8 9
10 12 13 44 45 48 80 NE 0 C AMOUNT CF ACTMTY LCCATION CF AELEASE
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W W
N/A l
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8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBEA TYPE CESCA PTICN
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89 11 12 13 80 PERSONNEL INJURIES NUMBEA CESCAPTICN E 101010l l
N/A l
89 11 12 80 2@If!!!n)
E0 Fa03ABLE ccusEquENCES
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yl N/A l
h) ' l i[ I LCSS OR QAMAGE TO FAC:UTY gyl
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3900G1 m
89 10 80 PUBUCITY yl N/A l
80 700921043f v CCITIONAL FACTCRS
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l 89 SO E_ I I