05000272/LER-1981-017-03, /03L-0:on 810223,RHR Pump 12 Declared Inoperable to Perform Test Per IE Bulletin 81-01.Caused by Defective Snubber Due to Intermittent Seizing of Balls in Race from Internal Corrosion.Snubber Replaced

/03L-0:on 810223,RHR Pump 12 Declared Inoperable to Perform Test Per IE Bulletin 81-01.Caused by Defective Snubber Due to Intermittent Seizing of Balls in Race from Internal Corrosion.Snubber Replaced

ML18085B133
Person / Time
Site:	Salem
Issue date:	03/25/1981
From:	Steele W Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18085B130	List: 05000272/LER-1981-017, Forwards LER 81-017/03L-0.Detailed Event Analysis Encl 05000272/LER-1981-017-03, /03L-0:on 810223,RHR Pump 12 Declared Inoperable to Perform Test Per IE Bulletin 81-01.Caused by Defective Snubber Due to Intermittent Seizing of Balls in Race from Internal Corrosion.Snubber Replaced
References
IEB-81-01, IEB-81-1, LER-81-017-03L, LER-81-17-3L, NUDOCS 8104020606
Download: ML18085B133 (1)

LER-1981-017, /03L-0:on 810223,RHR Pump 12 Declared Inoperable to Perform Test Per IE Bulletin 81-01.Caused by Defective Snubber Due to Intermittent Seizing of Balls in Race from Internal Corrosion.Snubber Replaced

Event date:
Report date:
2721981017R03 - NRC Website

text

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- LICENSEE EVENT REPORT U.S. NUCLEAR REGULATORY COMMISSION cz-111

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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Bo EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

[QJ2J I During normal operations at 1130 hours0.0131 days <br />0.314 hours <br />0.00187 weeks <br />4.29965e-4 months <br /> on 2/23/81, the No. 12 RHR Pump was I1JIJ [ill]

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declared inoperable in order to perform Engineering Test DCR #1EI1153 IAW NRC Bulletin 81-01, "Surveillance of Mechanical Snubbers".

Action Statement 3.5.2 was entered at this time.

The snubber mounted on the top of the pump motor was found to be defective.

Previous similar occurence was 79-54.

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47 [J))J I The apparent cause of the snubbers failure appears to be the result of internal corrosion that caused intermittent seizing of the balls in the race.

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defective snubber was replaced in kind with one that was tested satisfactory.

[JJJJ I The Action Statement was terminated at 1620 hours0.0188 days <br />0.45 hours <br />0.00268 weeks <br />6.1641e-4 months <br /> on 2/24/81.

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