ML19261B842

LER 79-004/03L-0 on 790216:saltwater Pump Discharge Check Valve Failed to Open When Started.Caused by Foreign Debris Lodged Against Disc.Valve Will Be Monitored Closely During Future Operation to Ensure Problem Is Eliminated

ML19261B842
Person / Time
Site:	Calvert Cliffs
Issue date:	03/01/1979
From:	Davis S, Romney K BALTIMORE GAS & ELECTRIC CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19261B834	List: ML19261B833 ML19261B842
References
LER-79-004-03L-01, LER-79-4-3L-1, NUDOCS 7903070312
Download: ML19261B842 (1)

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C ' 3t 0930 while jr#cminc a mutire surveillance test 11 saltatt~r o i

] L scharce di check valve failed to caen when the ruro was started. 12 salt- l jo ,4 i gater pumo was previously out of service for maintenance, reducina the number ]

Fc TG lof sal twater loens to one less than recuired by T.S.3.7.5.1. 13 saltwater l gy l cumo remained unerable during the event. 11 saltwater como was returned to 1 i a j - j [ service at 1030. This is not a recetitive occurrence. I a i .s i i I

, SO d 9 SYST EV CALSE CAUSE COYP VALVE CJCE CODE SUSCOOE COYPCNENT CCDE S'J3 CO O E Sus:COE o 9 8 9 l W l B l@ l Xl@ [Z @ l V l Al L l V J E j X l@ [ C j@ W @

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@NLYSER ! 719122 1-1 10 l 0l 4l l/l 1013l l Ll -l l0l 21 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT S-UTDOWN ATT AC"M ENT NP A D-4 F A i V'. COYP. CCVPONENT TAKEN ACTICN ONPLANT METHCO **OUPS 22 SUBYITTED FCRV 5UB. SLP9 LIER Y ANUF ACTURE R lZlg[34__XJ@

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40 4; 44 47 CAuss ces:RtPTION AND CCRRECTlve ACTICNS h seu lThe check valve ocened successfully on subsecuent cumo startina, orior to i 1 larrival of maintenance personnel. It is felt that a ciece of foreicn debris I

, i, lwas lodged acainst the disc, causina temocrary bindino. The valve will be I i 3 l monitored closely durina future operation to ensure that the oroblem has been I

i. 4 l eliminated. J 7 d 9 RO F ACILITY Ye TwCO OF STATUS  % DOWER QTHER STATL3 C'SCOVERY D'SC O'. Z R V O t 50m P'!GN 32 1 15 l E l@ l 0l 9l 4l@ NA J [Bl@l Operator Observation l ACTivlTY C NTENT 4ELEASED OF AELE ASE AYCUNT CF ACT'VITV L3 ATi;N OF 1 . ASE NA NA

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