ML19347A746

Nonroutine Environ Operating Rept 50-219/80-08:on 800910, Second Dilution Pump Placed Into Operation W/Bridge Water Temp Below ETS Requirements.Caused by Insufficient Pump Quota.Damaged Pump Removed & Repaired

ML19347A746
Person / Time
Site:	Oyster Creek
Issue date:	09/25/1980
From:	Finfrock I JERSEY CENTRAL POWER & LIGHT CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
RO-50-219-80-08, RO-50-219-80-8, NUDOCS 8009300132
Download: ML19347A746 (3)

Text

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OYSTER CREEK NUCLEAR GENERATING STATION

• • O'""fM8l;?n1, (609) 693-1951 P.O. BOX 388

• FORKED RIVER

• NEW JERSEY 6 08731 cM..t viua s,vm.

September 25, 1980 Mr. Boyce H. Grier, Director Office of Inspection and Enforcement Region I United States Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406

SUBJECT:

Oyster Creek Nuclear Generating Station Docket No. 50-219 Nonroutine Environmental Operating Report No. 50-219/80-8 This letter forwards two copies of Nonroutine Environmental Operating Report No. 50-219/80-8 in compliance with paragraph 5.6.2 of Appendix B to the Technical Specifications.

Very truly yours, W

Ivan R. Finfr ,J Vice Presiden -Generation IRF:dh 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 8009300/32 3 .

'. 0YSTER CREEV. NUCLEAR GENERATING STATZON Forked River, New Jersey 08731 Nonroutine Environmental Operating Report No. 50-219/80-8 Report Date September 25, 1980 Occurrence Date September 10, 1980 Identification of Occurrence Exceeding a limiting condition as defined in the Environmental Technical Specifica-tion, Paragraph 2.1.4.1, when a recond dilution pump was not placed into operation with the water temperature in Oyster Creek as measured at the U.S. Route #9 bridge exceeding 87.0 F for a period greater than two hours and fifteen minutes.

Each event was immediately identified at the time of non-compliance.

This event is considered to be a nonroutine environmental operating report as defined in the Technical Specifications, Appendix "B", paragraph 5.6.2.

Conditions Prior to Occurrence Steady State Power Dilution Pump Flow: 2.60 E5 GPM Circulating Water Pump Flow , 4.60 E5 GPM Description of Occurrence l

Prior to the non-complying discharges, dilution pumps 1-1 and 1-2 were in operation, dilution pump 1-3 was out of service due to maintenance. Dilution pump #1-1 was removed from service at 0925 on 9/10/80 due to a suspected fire in the pump motor. Further investigation determined that the inboard m tor bearing had overheated and been damaged. During the next eight days, five non-complying discharges were identified. Tnese non-compliances occurred as a result of having only one dilution pump in operation while tha discharge canal temperature, as measured at the U.S. Rdute #9 bridge, was 87.0 F or greater for a period exceeding two hours and fifteen minutes. In all five cases, while the plant was in a steady state power condition, the US Route #9 bridge . temperature paralled the plant intake temperature. The bridge temperature oscillated as a function of atmospheric conditions with the mean temperature approximately 87 F during the entire period of time. The maximum temperature reached during this period of time was 91. 7 *F.

The accompanying table lists the dates and the times of the non-complying discharges.

Beginning of Non-Compliance End of Non-Compliance Total time of Non-Compliance September 10,1980 at 1700 September 11, 1980 at 0115 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 15 minutes September 11, 1980 at 2130 September 12,1980 at 0400 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> 30 minutes September 13, 1980 at 0600 September 15,1980 at 1830 60 hours6.944444e-4 days <br />0.0167 hours <br />9.920635e-5 weeks <br />2.283e-5 months <br /> 30 minutes September 17, 1980 at 2000 September 17,1980 at 2145 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 45 minutes September 18, 1980 at 0115 September 18, 1980 at 0145 30 minutes

Non outine Environmental Operating Report No. 50-219/80-8 Page 2 Apparent Cause of Occurrence Insufficient Pump Quota Analysis of Occurrence The operation of two dilution pumps is required when the discharge water temperature, as measured at the U.S. Route #9 bridge, exceeds 87.0 F. Operation of the dilution pumps in the prescribed manner will minimize adverse biological effects on most species of fish. In each case of a non-complying discharge, no harmful marine biological effects were expected or observed.

Corrective Action -

Dilution pump motor 1-2 was shipped offsite on September 4,1980, to investigate and repair an excessive vibration problem. This motor was returned on site on September 15, 1980 repaired. The installation of the rebuilt motor on Dilution pump 1-3 began on September 15, 1980, and was completed on September 18, 1980.

Dilution punp 1-3 was available for operation at 1700 on September 19, 1980.

The damaged bearings from dilution pump motor 1-1 were removed and shipped offsite on September 15, 1980. These bearings will be babbitted, machined, and l returned to the site shortly. When this motor is repaired and returned to i service, it will render all three dilution pumps operable.

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