05000334/LER-1981-078-03, /03L-0:on 810823,during Testing of Containment Airlock Door Seals,Leakage Was Detected.Caused by Design Fault in Inner Door Seals.Sealing Surfaces Wiped Down & Regreased.Design Change Initiated

/03L-0:on 810823,during Testing of Containment Airlock Door Seals,Leakage Was Detected.Caused by Design Fault in Inner Door Seals.Sealing Surfaces Wiped Down & Regreased.Design Change Initiated

ML20010J492
Person / Time
Site:	Beaver Valley
Issue date:	09/23/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010J483	List:
References
LER-81-078-03L, LER-81-78-3L, NUDOCS 8110050157
Download: ML20010J492 (2)

LER-1981-078, /03L-0:on 810823,during Testing of Containment Airlock Door Seals,Leakage Was Detected.Caused by Design Fault in Inner Door Seals.Sealing Surfaces Wiped Down & Regreased.Design Change Initiated

Event date:
Report date:
3341981078R03 - NRC Website

text

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I 17 771 LICENSEE EVENT REPORT

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8 60 61 OOCKET NUYBER 64 63 EVENT OATE 14 75 REPORT OA'E 30

,c EVENT DESCRIPTION AND PROB ABLE CONSEGUENCES h I

O 2 l On 8/23/81 at 0145 hours0.00168 days <br />0.0403 hours <br />2.397487e-4 weeks <br />5.51725e-5 months <br /> with reactor nount n r 44'/. n enrun411,ncn ence conducted to test for leakage thru the containment airlock door seals I

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detected leakage past the inner door seals. The airlock was declared l

[olS; j inoperable. Power operations continued as perraitted by the action statement I

1 l0 l6 l l of Technical Specification 3.6.1.3.

There were no safety implications as I

I lo l7l l the outer airlock door tested safisfactorilv.

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33 34 as 3G 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS li l0 l l The airlock inner door sealing surfaces and 0-rines were wined down. recrear gij I

l2 Iil i and the surveillance test was successfuilv comnieted at o505 honrc nn ti s yi 1 8/23/81. Because of the frecuent nroblems with the afriock. a design change I

f,, y 3 l that will address the seal problems has been initiated and proposed for l

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Attachment To LER 81-78/03L Bravar Valley Power Station Duquesne Light Company Docket No. 50-334 Future information concerning the status of the design change will either be reported in a revision to this LER or in a subsequent LER.

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