ML19276H015

Nonroutine Environ Operating Rept 50-219/79-04 on 790801: Dilution Pump 2 Tripped Due to High Lube Oil Temp & Could Not Be Restarted.Caused by Component Failure.Lube Oil Temp Was Recalibr & Memo Issued

ML19276H015
Person / Time
Site:	Oyster Creek
Issue date:	08/21/1979
From:	JERSEY CENTRAL POWER & LIGHT CO.
To:
Shared Package
ML19276H014	List: ML19276H013 ML19276H015
References
NUDOCS 7908310343
Download: ML19276H015 (2)

Text

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OYSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Non-Routine Environmental Operating Report Report No. 50-219/79-4 Report Date August 21, 1979 Occurrence Date August 01, 1979 Identification of Occurrence Exceeded a limiting condition of operation of the Technical Specifications, Appendix B, paragraph 2.1.4.3 This event is considered to be a non-routine environmental operating report as defined in the Technical Specifications, Appendix B, paragraph 5.6.2.

Conditions Prior to Occurrence The plant was operating at steady-state power.

Dilution Pump Flow: 5.2 x 105 gpm Circulating Pump Flow: 4.6 x 105 gpm Power: Reactor 1920 MWt Generatur 640 MWe Description of Occurrence On August 1,1979, from 13:15 hours to 13:55 hours, only one dilution pump was in service. At 13:15 hours, with No. I and 2 dilution pumps running, No. 2 di10 tion pump tripped due to high lube oil temperature and could not be restarted. Due to maintenance work being performed at the dilution plant intake structure, the reserve pump (No. 3) was not started until 13:55 hours.

Apoarent Cause of Occurrence Component fa!!ure is the apparent cause of this occurrence. The No. 2 dilution pump oli temperature switch was out of calibration.

Analysis of Occurrence No adverse environmental effects were observed. The maximum discharge bridge temperature observed was 94.l*F (15 minute average) and occurred between 1400 and 1415

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. Non-routine Environmental Operating Report Page 2 Report No. 50-219/79-4 August 21, 1979 Corrective Action The lube oil temperature was recalibrated to its correct setting. In addition, in order to ensure prompt identification of similar occurrences, a memorandum has been written to the Station Operat*ons Supervisor explaining the dilution pump operating requirements as specified by the Appendix B Technical Specifi-cations. The memorandum requests that operating personnel verify and log dilution pump starts and stops, log operating difficulties, and notify the Operations Supervisor of any occurrences when the pumps are not operated in accordance with the Technical Specifications. This memorandum has been made required reading by operations personnel.

Failure Data Not applicable.

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