05000369/LER-1982-081-03, /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 Forc

/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: 05000369/LER-1982-081, Forwards LER 82-081/03L-0 05000369/LER-1982-081-03, /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 Forc
References
LER-82-081-03L, LER-82-81-3L, NUDOCS 8301200249
Download: ML20028E013 (1)

LER-1982-081, /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

Event date:
Report date:
3691982081R03 - NRC Website

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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 CONTROL SLOCK: l l

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(PLEASE PRINT OR TYPE ALL REQUIREO INFoRMATION l 0!1 I lN l C l Ml Gl S! 1 !@l 0l 01-l 0 l Ol O!0 ! 0 l -l Ol O!@l 4 l ll Il d Il@l l

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.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 kn_ !

l o l 7 ! ! RO 369/82-74. The ability to mninenin enntninmont intogefty unc nouar ince T T lcause the redundant operable door was locked closed.

Health and safety of the !

Public weyp,,ppaffecqg,4 aa y,

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.7 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 l

! 1 l 2 l l to withsennd rhn fnrcon nf hoing inf1,ena unrestrnined (the inrpo son 1 unn n 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

a,,g,1 meet with the airlock's ma ufqcp,y,ge,q to determine future correct ve action %.

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