ML20150E135

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/03L-0 on 781202:periodic Leakage Rate Test for Personnel Did Not Meet Type B Test Criteria as Specified by Tech Specs.Test Strongbacks Were Not Completely Tightened Thereby Causing Seal to Stretch Upon Initial Pressurization
ML20150E135
Person / Time
Site: La Crosse File:Dairyland Power Cooperative icon.png
Issue date: 12/04/1978
From: Parkyn J
DAIRYLAND POWER COOPERATIVE
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20150E130 List:
References
LER-78-013-03L, LER-78-13-3L, NUDOCS 7812110158
Download: ML20150E135 (1)


Text

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E VENT DESCRIPTION ArJD PnOH AULE CONSEQUENCES h

_l io l2l l PERIODIC LEAKAGE RATE TEST FOR THE PERSONNEL AIRLOCK DID NOT MEET TYPE

[ O l ., j j B TEST CRITERIA AS SPECIFIED BY TECHNICAL SPECIFICATIONS. THE LEAKAGE l THE ALLOWABLE LEAKAGE P1,TE IS 3. l

[nlyij [ RATE WAS DETERMINED TO BE 9.015 SCFH.

I THE SOURCE OF LEAEACE WAS TKE INNER DOOR SEAL RESULTING FROM l

[o IsI l 75 SCFH.

PRIMARY CONTAI!NENT INTEGEITY WAS MAINT I

[ o lc l [ INSCFFICIENT TEST PREPARATION.

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[ TIT} l AINED BY OUTER DOOR OF AIRLOCK.

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CODE C ODE SUHCODE CO*.1 PONE tit CODI SubCODE SUDCODE

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,2 23 24 26 17  ;'h 2') 33 31 37 ATT ACHUE NT NPRD4 PRWE COMP. COMPONENT A C T l":N F . T .. P E f5FECT 5H t >T DOWN MANUFACTVRER T A *' I '. A T I C '. GN hANT ME T H O;) HOU5t$ - - SUBMITT E D F OR M ;, rut 3 $UPPUER IA l@lcl@ lr Zi@ lx. Zl@ l O! 01 01 01 v da le Y l@ lNl@

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Iiloll TEST STRONCBACKS WERE NOT CCMPLETELY TICHTENED THEREBY CAUSING SEAL TO

[1 [ij [ STRETCH UPON INITIAL PRESSURIZATION. PROCEDURAL REVISIONS WILL REQUIRE I l

[,Iaj l SPECIFIC TIGHTNESS CRITERIA TO BE VERIFIED PRIOR TO PRESSURIZATION.

l lt 1a} l STRETCHED SEAL WAS REPLACED AND SATISFACTORY RETEST WAS ACCOMPLISHED.

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