ML19317F971
| ML19317F971 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 06/18/1975 |
| From: | Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | |
| Shared Package | |
| ML19317F835 | List: |
| References | |
| NUDOCS 8002210676 | |
| Download: ML19317F971 (1) | |
Text
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, LICENSEE EVENT REPORT _ _
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57 58 59 60 61 68 69 74 75 60 EVENT DESCRIPTION
] l During a surveillance test of one of two auxiliary feedwater pumps (P-318) the pump l
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] l stopped. A second try was also unsuccessful. Preventive mainter.ance procedures l
80 89 "Til l are being implemented-to test trip setpoints at all Class I equipment.
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47 48 CAUSE DESCRIPTION A check of the circuit revealed tha't the l y lThe pump motor was tripping on overcurrent.
eo 89 3 lovercurrent Ich relay coil was not secured, the lock nut was loose, and the time delay l 80 89.lovercurrent trip setpoint had drifted to 21 amps from the original 23 amp settinc.
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8 9-10 12 13 44 45 46 80 ACT$TV CCNf f N T AMOUNT oF ACTMTV LoCATCN CF AELEASE QF SELEASE l REL(ASEO
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10 11 44 45 80 PERSONNEL EXPOSUAES NUMBER TYPE CESCAIOTCN
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00 89 11 12 13 PERSC?:t:n *:.~t:r'ES Nuveta
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eg 89 11 12 OFFSITE CONSEQUENCES
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60 89 LOSS OR CAMAGE TO FAC!UTY TYPE DESCRpf0N l
3 l_Z_j l NA 80 89 10 PUGUCITY T) 'l " Sacramento Bee" and " Union" notified on May 23, 1975.
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ADOITIONAL FACTORS i]The motor current operated at the trip setpoint long..cnough to give the trip.
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00 89 (916) 452-3211 NAME: R. 11 Colombo PHONE:
8002210 [ 74
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