ML19257C624

LER 79-041/03L-0:on 791228,while Performing Surveillance, HPSI Injection Valves 2-SI-616 & 626 Overtravelled 3%.Insp of Valves Showed No Apparent Damage.Attempt to Repeat Overtravel Was Unsuccessful

ML19257C624
Person / Time
Site:	Millstone
Issue date:	01/23/1980
From:	Rothgeb R NORTHEAST UTILITIES
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19257C619	List: ML19257C618 ML19257C624
References
LER-79-041-03L, LER-79-41-3L, NUDOCS 8001290508
Download: ML19257C624 (1)

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6J G1 DOCKET NU'? DER 08 03 EVENT DATE 74 7b HLPORT DATE EVENT DESCRIPTION AND PROBADLE CONSEQUENCES h 1 o l 2 l [jlhile performing surveillance required by T.S. 4.5.2.e.1, HPSI injection valves I o 3 l 2-SI-616 and 626 overtraveled approximately 3%. The plant was operated in accordance I lo I. l l with the action specified in T.S. 3.5.2 for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and 44 minutes. Valve operator J o 3 l manufacturer: Limitorque Model SMB-00. i o e  ! I O 7 l l 0 e] I - - -I 03 7 8 0 DE CODE SLLC E CO'.'FONE NT CODE SURO DE 5 ODE 7

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i o l The main line contactors for both valves were visually insnected and, functionally I

[ijil [ checked. There was no apparent damaCe. Both valves were cycled several times in an I i 2 l unsuccessful attempt to repeat the overtravel . The slight overtravel of the injection 1,13 l l valves would have resulted in slightly greater injection flow rates and a lower margin ]

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