ML19331E054

Nonroutine Environ Operating Rept 50-219/80-5.Total of Ten Dilution Pump Trips Occurred Between 800808 & 800812.Caused by High Lubricating Oil Temp.Evaluation Completed for Upgrading Cooling Water Sys

ML19331E054
Person / Time
Site:	Oyster Creek
Issue date:	08/26/1980
From:	Finfrock I JERSEY CENTRAL POWER & LIGHT CO.
To:
References
NUDOCS 8009050340
Download: ML19331E054 (3)

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Jersey Central Power & Light Company k [(4" (-) Madison Avenue at Punch Bow Road Momstown, New Jersey 07960 (201)455-8200 Augus t 26, 1980 Mr. Boyce H. Grier, Director Office of Inspection and Enforcement United States Nuclear Regulatory Comission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406

SUBJECT:

Oyster Creek Nuclear Generating Station Docket No. 50-219 Non-Routine Environmental Operatina Reoort No. 50-219/80-5 This letter forwards two copies of Nonroutine Environmental Operating Report No. 50-219/80-5 in compliance with paragraph 5.6.2 of Appendix B to the Technical Specifications.

Very truly yours, l

Ivan R. Finf k, r.

Vice Presida 't-Generation ck l Enclosures cc: Director (17 copies)

Office of Nuclear Reactor Regulations United States Nuclear Regulatory Commission Washington, D. C. 20555 c/o Distribution Services Branch DDC, ADM l

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Jersey CentrM Power & Light Cemoany is a Memoer of the Genera! Public Utsties System

Jersey Central Power & Light Company y

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t Madison Avenue at Punch Bowt Road Momstown, New Jersey 0796o (201)455-8200 OYSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Nonroutine Environmental Operating Report No. 50-219/80-5 Report Date Augus t 26, 1980 Occurrence Dates Augus t 8, 9, 11, 12, 1980 Identificatirn of Occur ence Exceeding a limiting condition as defined in the Environmental Technical Speci-fication, Paragraph 2.1.4.3, when over a span of five days, ten individual instances occurred where a dilution pump tripped and could not be restarted within the required limit of 15 minutes. During each occurrence, discharge water temperature exceeded 87.0 F at the U.S. Route #9 bridge. These events were immediately identified at the time of non-compliance.

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  : 5.20 E 5 GPM Circulating Water Pump Flow: 4.60 E 5 GPM Description of Occurrence A total of ten dilution pump trips occurred between August 8,1980 and August 12, 1980. All trips were caused by high lubricating oil temperature which was in turn caused by low cooling water pressure. The lubricating oil temperature would increase to the system trip point and trip the pump. This condition was aggravated by high ambient water temperature and air temperatures.

The accompanying tables list the dates and the times of the pump trips, the total time the pump was off, and the time of non-complying discharge:

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Jersey Central Power & Light Comcany is a Member of the General Puche Utities System

Non-Routine Environmental Operating Report Page 2 No. 50-219/80-5 August 26, 1980 DILUTION PUMP TRIPS Total Time Of Time Off Time On Time Off Non-Compliance Date (Pumo #) (Pump #) (Minutes) (Minutes)

August 8, 1980 1105 (1-1) 1308(1-1) 123 108 August 8, 1980 1408 (1-1) 1508(1-2) 60 45 August 8, 1980 1522(1-2) 1715 (1-3) 113 98 August 9, 1980 0811 (1-1) 0835 (1-1) 24 9 August 9, 1980 1501 (1-1) 1536 (1-1) 35 20 Augus t 9, 1980 1744 (1-1) 1815 (1-1) 31 16 August 9, 1980 1851 (1-1) 1914 (1-1) 23 8 ,

August 9, 1980 1958 (1-1) 2025 (1-1) 27 12 l August 11, 1980 1309 (1-1) 1339 (1-1) 30 15 August 12, 1980 1409 (1-1) 1446 (1-1) 37 22 Accarent Cause of Occurrence The cause of this occurrence is attributed to component failure due to a lubri-cating oil cooling system that was inadequate for the unusual service conditions ,

that existed at the time.  !

When dilution pumps tripped due to high lubricating oil temperature, they had to remain out of service until the oil cooled sufficiently to allow for restart.

i Analysis of Occurrence l The operation of two dilution pumps is required when the discharge water temp-erature exceeds 87.0 F at the U.S. Route #9 bridge. Operation of the dilution pumps in the prescribed manner will minimize adverse effects on most species of fish. In each case of a dilution pump tripping out of service for a period greater than 15 minutes, no harmful marine biological effects were observed.

Corrective Action The plant operations staff increased surveillance on the dilution plant during this period. In each case when the lubricating oil had cooled sufficiently, the pump in question was restarted.

An engineering evaluation has been completed for the purpose of upgrading the l dilution pump sealing water and cooling water systems. Until modifications can i be made, the internals of the cooling water solenoid valves have been removed to increase the flow of cooling water to the lube oil heat exchangers.