ML19319B794

RO NP-33-77-61:on 770823,auxiliary Feed Pump 2 Rendered Inoperable During Planned Adjustment to Governor Valve. Governor Hung Up at Certain Speeds Necessitating Maint Action.Auxiliary Feed Pump Tested & Returned to Svc

ML19319B794
Person / Time
Site:	Davis Besse
Issue date:	09/19/1977
From:	Lingenfelter J, Vallade S TOLEDO EDISON CO.
To:
Shared Package
ML19319B720	List: ML19319B719 ML19319B794
References
NUDOCS 8001270261
Download: ML19319B794 (2)

Text

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2. rs as gvgeef Of SCR Pvtow gl Auxiliary 7 .s Feed Pump #2 was inoperable due to a planned adjustment to thej gg governor valve. This placed the station in the Action S:atement of so g' Technical Specification 3.7.1.2.

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CAUSF oE SCRipleoN l The governor hung up at certain speeds, necessitating its adjustment.

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TOLEDO EDISON COMPANY DAVIS-BESSE NUCLEAR POWF.R STATION UNIT ONE SUPPLEMENTAL INFORMATION FOR LER NP-33-77-61 DATE OF EVE'iT: August 23, 1977 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRE' ICE: Auxiliary Feed Pump 1-2 was inoperable due to a planned adjustment.

Conditions Prior to Occurrence: The plant was in Mode 2 with Power (MWT) = 0 and Load (MWE) = 0.

Description of Occurrence: On August 23, 1977, at 1045 hours0.0121 days <br />0.29 hours <br />0.00173 weeks <br />3.976225e-4 months <br />, Auxiliary Feed Pump 1-2 was rendered inoperable for performance of planned maintenance. The governor hung up at certain speeds, necessitating its removal from service for =aintenance.

The station entered the Action Statement of Technical Specification 3.7.1.2.

Designation of Apparent Cause of Occurrance: Auxiliary Feed Pump 1-2 was deliber-

'- ately rendered inoperable to perf orm maintenance on the governor valve.

Analysis of Occurrence: There was no danger to the health and safety of the public or to station personnel. The other Auxiliary Feed Pump, 1-1, was operable during the period that 1-2 was not.

Corrective Action: Auxiliary Feed Pump 1-2 was declared operable at 1945 hours0.0225 days <br />0.54 hours <br />0.00322 weeks <br />7.400725e-4 months <br /> on )

August 23, 1977, after passing Surveillance Test, ST 5071.01 Auxiliary Feedwater i System Monthly Test. The station was then removed from the Action Statement of (

Technical Specification 3.7.1.2. l 1

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l Failure Data: There have been no previcus occur Ances involving deliberate removal '

from service of Auxiliary Feed Pump 1-2 for perfor=ance of =aintenance on the governor valve.

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