ML19350A948

LER 81-008/03L-0:on 810210,water Seepage Observed Along West Wall of Nrw Bldg.Direct Survey Showed Detectable Ground Contamination Only within 6 Inches of Wall.Caused by High Levels in Tank Vaults.Herculite Secured & Sealed to Wall

ML19350A948
Person / Time
Site:	Oyster Creek
Issue date:	03/12/1981
From:	Fitzgerald M JERSEY CENTRAL POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19350A947	List: ML19350A946 ML19350A948
References
LER-81-008-03L, LER-81-8-3L, NUDOCS 8103170640
Download: ML19350A948 (1)

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NRC FORM 368 . U. S. NUCLE A"J ;'t "UL ATCY COMMIS$3!N (7 77)

. LICENSEE EVENT REPORT O CCWOL 8LCCK:

. l l l } l l

.h l (PLEASE PRINT C3 TYPE ALL l'EQUIRED INFO ~MATIONI l- l0 l0 g l 4l 1l 1l 1l 1l g ; ;j l @ '

.I o I t i F 4 INlJlOlClPl1lglts0 2 UCEtJSEE COct 14 g0 l- l0 p l0.p uCENsa NvusER p 25 24 uCEN&E TYPE 40 Si -T W CO M*T

_ 10111 "'**"[l g ,c L @l 0 l5 l0 10 l0 l2 l1 l9 Ql 0 ] 2 l1 l018 l1 g[0 l3 REPCRTQATE 66 69 EV ENT C ATE 74 73 l1 l2 (8 l1 80{@

7 8 60 et QCCKET NLug E R EVENT CEscalPTION AND PROSASLE CCNSEQUENCES O'o

.l o I:1 1 On Tuesday February 10 at approximately 0740 hours0.00856 days <br />0.206 hours <br />0.00122 weeks <br />2.8157e-4 months <br />, the offgoing New [

I o 6 31 1 Radwaste (NRN operator observed water seepage at points along the west l LojAi ; wall of the NFW building. The total release has been estimated at l

_ io i5; ; approximately 15 gallons, and the cross beta concentration was found to l l C !e , ! be 3.2 x 10-3 pCi/ml. Direct survey showul detectable ground contamina- l lCi;; l tion only within 6 inches of the wall, and a revision to this report l

,o,3, [~will mntain results of soil Core sanples currently being tested. SQ I

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$YSTEV CAUSE CAUSE CCMP. VALV E 0 03 .;0ct SUS 000E :OMP:NENT CODE SLE:0 5 gus:::E ici,i I M I A l@ [s_j@ l s 1@ l z! zl zl zl zi zl@ I z l@ l zi @ 18 19 20 F & 3 13 11 12 12 SEcutNTIAL CCCURRENCE REPCRT R EVISICN EVENT YEAR R E*CRT NC. C00E TYPE NC.

@ .;L!e 5.gaC 18 il l l-l 1010181 26 l-l 10131 23 ;3 y

0 l_I 31 l01 32 21 22 23 24 27 K N 'bc A C P NT M HOURS 58 i POR 8. SLPPL MANUPA RER l32x l@Lgj@ lzl@ lzi@

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43 A4 47 24 35 42 CAUSE DESCRIPTICN AND COP AECTIVE ACTIONS h i, io;lThe cause was due to unusually high levels in the tank vaults and to the i f g,,i; l concrete wall not containing this water. Herculite was secured and l l

l sealed against the wall to cont %2n the seepage. There are engineering  ;

,,,3i l requests to irivestigate the extent of leakage pathways through the j ii g , l bnildMg and the installation of level detection in the tank vaults. l 7 8 9 80 Tus  % PowtR CTHEM STATUS iO RY 015CCVERY DESCRIPTTCN Observed by NFW Omrator Ii 15 l l El@ l0 l9 l1" lhl" NA l lAl@l **

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',!miT CsTENT Ruusto e, RELust tCCATiCN CPR ati E@

aucuuTC, ACmiTv @l jNW mmer of NFW Buildina to around l l

l1 l6 l l Ll @ lM l@l 3.2 E-3tCi/ml

• ER3ONNEL EXPCS E3 NyuGER TYPE OESCatPTtCN l t l 7 l l 0 l 0 l' 0 l@l]hl NA l PERSCNN E L INJU IE3 NgugER QESCRIPTION it m8 1010 7 9 0 l@i 11 12 NA EQ i

LC55 CP CA CAMAGE 70 PACILtTY ,

TV8E CESCRl* TION NA It191Izl@l 7 4 9 to to l

/ e 12Iol issygf@l lY E CRIPTION News Releases, 2/10/81 and 2/11/A1 l IllliIlIII!l l5 7 8 9 10 68 69 30.;

• 9 Id PNCNE:-(609) 693-6039 -3

. NAME OF RaE8ARER '

810817061D