ML20028E013

LER 82-081/03L-0:on 821211,lower Personnel Airlock Declared Inoperable After Reactor Door Found Partially Closed W/Small Seal Ruptured & Large Seal Inflated.Cause Not Known.Seal Not Designed to Withstand Unrestrained Inflationary Forces

ML20028E013
Person / Time
Site:	McGuire
Issue date:	01/10/1983
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20028E003	List: ML20028E002 ML20028E013
References
LER-82-081-03L, LER-82-81-3L, NUDOCS 8301200249
Download: ML20028E013 (1)

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NRC FORM 366 U.S. NUCLE AR REGUL ATORY COMMISSION A PPROV ED gy oms

" LICENSEE EVENT REPORT E'2Pi R N'4a o-a (PLEASE PRINT OR TYPE ALL REQUIREO INFoRMATION CONTROL SLOCK: l l l l l l l@

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d 1lO Ol ATE 8l 5 @.9 EVENT DESCRIPTION ANO PROSA8LE CONSEOL.'ENCES h l o l2 ] l Af ter personnel had entered containment through the lower personnel airlock (PAII) loj3ll(leaving the reactor door of the PAL open), a loud noise was heard. Upon return-I o I 4 ; l ing to the PAL they found the door oartially closed and the small sen1 runturod' l o 15 l l (the larne seal was inflated but not runtured). The PAT. vn s docinrod innnornhld l o ! 6 l l per T.S.3.6.1. 3 which is reportable per T.S.6.9.1.13(d) and similar rn nreviousl l o l 7 ! ! RO 369/82-74. The ability to mninenin enntninmont intogefty unc nouar ince kn_ !

T T lcause the redundant operable door was locked closed. Health and safety of the !

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GODE CODE SWBCODE COMPONENT CODE SUSCODE SWSCODE lo j9 ] l S lD l @ [E_j @ lnX l @ l P l ElN l E h IR .l @ l..Aj @ (_yj @ ,, . . ..

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.4 .7 93 34 33 1. 37 .1 CauSE OeSCRiPriON ANO CORRECTIVE ACTICNS h IflollIt is unknown why or how the seals inflated with the door nn e ennnl orol v cincod]

l1l1 llThe small seal which failed was manufactured by Presrav Corn. and is not desiendd

! 1 l 2 l l to withsennd rhn fnrcon nf hoing inf1,ena unrestrnined (the inrpo son 1 unn n l l 1 ! 3 l l Sea 1 master) . The outer door was secured closed. the son 1 ronincod (ufth n Ron1 !

l i l 4 l l master seal). and the PAL declared operable. As stated in RO 369/82-74. Duke I r

a,,g,1 meet with the airlock's ma ufqcp,y,ge,q a to determine future correct ve DisCOvE m? DE sCRIPTION 32 action %.

status  % Pow E n OTNEm sT ATus DisCOvEn?

N/A l @l. Personnel Observation l ltlsl L.l@l0lsIol@l 7 . i. n n = a =

REL 350 RELE E AMOUNT OF ACTIVITT LOC ATION OF R ELE ASE l1l61lZI@

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NUMgER TTPE D E S C R tPTION l 1 l .7.l l0 1010 l@d@l N/A l

, n n n NUMBER E S C R IPTION N/A l I 11 a l l0 l 0 l 0 l@l ..

, .. n n TPE DESCR PT ON lil9!!Zl@l N/A 8301200249 830110 "

PDR ADOCK 05000369 S

... E P "'n'.'C.,P,,0 N @ paq mSE C' tv N/A I IIIiIIIIIIIII i 2 l o ! L. ul@l NAME OF PREPARER Phillip B. Nardoci PHON E : (704) 373-7432