ML20030B566
| ML20030B566 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 08/11/1981 |
| From: | Carroll J JERSEY CENTRAL POWER & LIGHT CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| RO-81-002, RO-81-2, NUDOCS 8108180293 | |
| Download: ML20030B566 (3) | |
Text
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NUCLEAR GENERATING STATION OYSTER CREEK C)b Uwww
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(609)693-6000 P O BOX 388
- FORKED RIVER e NEW JERSEY e 08731 August 11, 1981 p$l -
Mr. Boyce H. Grier, Director
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Office of Inspection and Enforcerent
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s Unitui States Nuclear Regulatory Cannission ig 631 Park Avenue i<
"UO 71981:=. -12 King of Prussia, Pennsylvania '9406 v.s.
Dear Mr. Grier:
4 to SUd]ECT: Oyster Creek Nuclear Generating Static W
Docket No. 50-219 Noaroutine Environmental Operating Poport No. 50-219/81-2 This letter forwards two copies of Nonroutine Environment G Operating Peport No. 50-219/01-2 i' carpliance with paragraph 5.6.2 of Appendix B to the Technical Speciilcations.
Very truly yours, c r dwe L T. F a ll, Actin; ~1.+rFor!
ster Creek JIC:dh Enclosures cc: Director (17 copies)
Office of Nuclear Poactor Regulations United States Nuclear Regulatory Ccmnission Washington, D. C.
20555 Director NRC Resident Inspector (1)
Oyster Creek Nuclear Generating Station Forked River, N. J.
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8108180293 810811 PDR ADOCK 05000219 S
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OYSTER CREEK NUCIFAR GENEPATING STATION Forked River, New Jersey 08731 Nonroutine Enviromental Operating Peport No. 50-219/81-2 Report Date August 11, 1981 Occurrence Date July 29, 1981 Identification of Occurrence Paragraph 2.1.4.3 of the Eavironnental Technical Specification. An insufficient number of dilution punps were operating to ccraply with paragraph 2.1.4.1 cf the Enviromental Technical Specification. Less than two dilution punp were operating for a period of 26 mintites, and water tsperatice at the U.S. Route 9 bridge excmW 87 F during this period.
This event is considered to be a Non-Routine Environmental Report as defined in the Technical Specifications, Appendix "B", Paragraph 5.6.2.
Conditions Prior to Occurrence _
Steady State Pcwer Dilution Punp Flow 5.20 x 105 GPM Circulating Water Punp Flow 4.60 x 105 GPM Prior to the occurrence, the ambient water tmperature in the intake canal was 0
80.8 F.
The condenser discharge water taperature was 96.5 F and the U.S. Route 9 Discharge Bridge tsperature was 87.70F.
Description of Occurrence Dilution punp 1-1 is inoperative because of a motor Ir.alfunction. At 1512 hours0.0175 days <br />0.42 hours <br />0.0025 weeks <br />5.75316e-4 months <br />, diluticn pump 1-3 tripped off, leaving only dilution punp 1-2 in operation. At 1538 hours0.0178 days <br />0.427 hours <br />0.00254 weeks <br />5.85209e-4 months <br />, dilution ptmo 1-3 was returned to service. At 1539 hours0.0178 days <br />0.428 hours <br />0.00254 weeks <br />5.855895e-4 months <br />, dilution ptmp 1-2 tripped off and was returned to service at 1546 hours0.0179 days <br />0.429 hours <br />0.00256 weeks <br />5.88253e-4 months <br />. Water tenpera-tures exceeded 87 F at the U.S. Route 9 Bridge at Oyster Creek frcan 1515-1545 hours.
Ky3is of Occurrence Dilution punp 1-3 tripped oft ct 1512 hours0.0175 days <br />0.42 hours <br />0.0025 weeks <br />5.75316e-4 months <br /> and retumed to service at 1538 hours0.0178 days <br />0.427 hours <br />0.00254 weeks <br />5.85209e-4 months <br />. Dilution ptmp 1-2 trippea 0*f at 1539 hours0.0178 days <br />0.428 hours <br />0.00254 weeks <br />5.855895e-4 months <br /> and returned to service at 1546 hours0.0179 days <br />0.429 hours <br />0.00256 weeks <br />5.88253e-4 months <br />. Dilution ptmp 1-1 was not in operation on July 29, 1981. Water taperatures exceeded 87 F at the U.S. Route 9 Bridge during this oce.'rrence, but no adverse biological effects accxmpanied the elevated water teneratures.
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Nonroutine Enviromental Operating Peport No. 50-219/81-2 Paqe 2 Analysis of Occurrence (Cont'd)
Continuous operatica of up to two dilution peps is specified to maintain water 0
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temperatures below 87 F at the U.S. Route 9 Bridge at Oyster Creek. 'Ihe objective of this operation is to minimize the occurrence of adverse biological effects in Oyster Creek and contiguous water.
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Corrective Action Irmw14 ate corrective actico involved restartito dilution pmps 1-3 and 1-2.
Engineering is now finalizing proposals to upgrade the dilution pmp cooling and seal water systers.
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