05000317/LER-1979-004-03, /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

/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: 05000317/LER-1979-004, Forwards LER 79-004/03L-0 05000317/LER-1979-004-03, /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
References
LER-79-004-03L-01, LER-79-4-3L-1, NUDOCS 7903070312
Download: ML19261B842 (1)

LER-1979-004, /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

Event date:
Report date:
3171979004R03 - NRC Website

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

] L scharce check valve failed to caen when the ruro was started.

12 salt-l di gater pumo was previously out of service for maintenance, reducina the number

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,4 i 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.

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43 44 47 CAuss ces:RtPTION AND CCRRECTlve ACTICNS h seu lThe check valve ocened successfully on subsecuent cumo startina, orior to i

larrival of maintenance personnel.

It is felt that a ciece of foreicn debris I

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, i, lwas lodged acainst the disc, causina temocrary bindino. The valve will be I

l monitored closely durina future operation to ensure that the oroblem has been I

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