ML19261D814

LER 79-019/03L-0 on 790525:during Performance of Surveillance Testing,Engineered Safety Features Actuation Sys Module SIAS B-8 Failed to Actuate at 1,730.Cause Unstated.Module Replaced

ML19261D814
Person / Time
Site:	Calvert Cliffs
Issue date:	06/21/1979
From:	Carroll J, Miernicki M BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19261D811	List: ML19261D810 ML19261D814
References
LER-79-019-03L, LER-79-19-3L, NUDOCS 7906260442
Download: ML19261D814 (1)

Text

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la!: L0urina perfor-ance of surveillance testinc ESFAS redule SI S E-8 failed to actuate 1 F-i n jat 1730. SIAS B-8 rodule starts 22/23 saltwater pumo and shuts CV-5251 (saltwater I

[o I a ! Isucaly to circ. water cumo room air coolers). The rodule was reolaced and the test 1 jc i:I Lsatisfactorily cercleted at 1317. SIAS A-3 redule, which actuates fully redundant I

'o Iccnconents; remained crerable thrcuchout this event. LER's 75 4 (U-21 and 73-34 l j;I-1 (U-1) describe sinilar events. I 14 l  !

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i ; lSIAS B-8 locic r.odule would not actuate on a containment oressure sicnal from any I i i lof the sensor channels or the test button. The module was renlaced with a soare I

3 which was tested satisfactorily. Failed rodule was returned to the ranufacturer I i j,i lfor recair; no further corrective action is necessary. (Vitro Laboratories Podel l

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.tc r y 2ngn J. T. Carroll /M. J. Miernicki g , c ., g . (301) 234-7043/7952 1,