ML19269D602

LER 79-015/03L-0 on 790519:containment Air Lock Outer Door Air Leakage Discovered to Be in Excess of Tech Spec Limits. Caused by Failed Door Gasket.New Gaskets Installed & Door Latch Rollers Adjusted

ML19269D602
Person / Time
Site:	Calvert Cliffs
Issue date:	05/25/1979
From:	Lagiewski J, Miernicki M BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19269D600	List: ML19269D599 ML19269D602
References
LER-79-015-03L, LER-79-15-3L, NUDOCS 7906050265
Download: ML19269D602 (1)

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C 8@ l0 LICENSEE IC lCCODE IN l2 l@l 0101 -l 0 LICENSE 0 01010 l 0l O25 l@l a lLICENSE l l 1 lTYPE l l lJol@l57 I CATsa 9 14 15 NuveER ;6 N'T C 4 SC"CE 60 ll l@l 015101010131 61 DOCKET NUMBER 1181@l68 69 01 Sl 11917l 91@ 7501 SI EV ENT D ATE 74

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REPCRT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h E IDurino the cerfomance of surveillance testino tha containmant air locle autor l E l door air leakace was found to be in excess of that allcwed by Tech. Snec. I E 13.6.1.3.b at 2145. Corrective action was comoleted and a satisfactorv leak l E l rate test was cerformed at 1530 on 5/20/79. The inner door remained closed I E land sealed while the outer door was inocerabla. Throucholit this reriod tha i E ltatal containment air leakace never exceeded the limit of T.S. 3.6.1.2.b. I E ILER's 77-13 (U-1) and 77-19 (U-2) describe similar events. 80 I

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43 44 47 CAUSE CESCRIPTION AND CC ARECTIVE ACTICNS o lThe cause of the excessive leakace was a failed door casket. This is I i- Iconsidered a nomal end of life failure. New door caskets were installed I

, y land dcor latch rollers adiusted. Seals were retested satisfactor/.

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NAVE OF PAEPARER J. S. Lagiewski/'4. J. Miernicki PwCNE:

(301) 234-7942/7962 g 3