ML20070P836
| ML20070P836 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 01/11/1983 |
| From: | Fiedler P GENERAL PUBLIC UTILITIES CORP. |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| RO-82-8-2, NUDOCS 8301260404 | |
| Download: ML20070P836 (3) | |
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GPU Nuclear E[
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P.O. Box 388 Forkeo River, New Jersey 08731 609-693-6000 Writer's Direct Dial Number:
January 11, 1983 Mr. Ronald Haynes, Direct.or Of fice of Inspection and Enforcement Region I United States Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406 Dear Mr. Haynes; Subj ect: Oyster Creek Nuclear Generating Station Docket No. 50-219 Nonroutine Environmental Operating Report No.
50-219 82-8-2 This transmittal forwards two copies of Nonroutine Environmental Operating Report 50-219 82-8-2 in accordance with paragraph 5.6.2 of Appendix B to the Technical Specifications. Please note that this report is being submitted past the thirty day limitation as a result of the need to further investigate this matter and to obtain approval from the Plant Operations Review Committee.
Very truly yours, f
U Peter B. Fiedler Vice President and Director Oyster Creek PBF:DFM:jal cc: Director (17 copies)
Office of Nuclear Reactor Regulations Untied States Nuclear Regulatcry Commission Washington, D.C. 20555 NRC Resident Inspector Oyster Creek Nuclear Generating Station Forked River, NJ 08731 8301260404 830111 PDR ADOCK 05000219 S
PDR GPU Nuclear is a part of the General Pubhc Utilities System gt3
Oyster Creek Nuclear Generating Station Forked River, New Jersey 08731 Nonroutine Environmental Operating Report. No. 50-219 82-8-2 Report Date January 11, 1983 Occurence Date December 5, 1982 Identification of Occurretce Exceeding a limiting condition as defined in the Environmental Technical Specifications, paragraph 2.1.4.3, when an insuf ficient number of dilution pumps were in operation as specified in paragraph 2.1.4.2.
Less than two dilution pumps vere operating for greater than 15 minutes, and ambient water temperature was less than 60CF.
This event is considered to be a Nonroutine Environmental Report an defined in the Technicel Specifications, Appendix "B", Paragraph 5.6.2.
Conditions Prior to Occurrence Dilution Pump Flow 5.20 E5 GPM Circulating Water Pump Flow 3.45 E5 GPM Prior to the occurrence, the ambient water temperature in the intake canal was l
53.2 F.
The condenser discharge water temperature was 66.3 F, and the U.S.
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Route 9 discharge bridge temperature was 56.40F.
Description of Occurrence At 0322 hours0.00373 days <br />0.0894 hours <br />5.324074e-4 weeks <br />1.22521e-4 months <br /> on December 5,1982, dilution pump 1-3 tripped, leaving only dilution pump 1-2 in operation. Dilution pump 1-3 was returned to service at 0433 hours0.00501 days <br />0.12 hours <br />7.159392e-4 weeks <br />1.647565e-4 months <br />.
Apparent cause of Occurrence i
i The cause of this event is unknown. However, shortly af ter dilution pump 1-3 tripped, the seal water pump failed. The trip of pump 1-3 could be attributed to low seal water flow.
Analysis of Occurrence l
Continuous operation of the dilution pumps is required to maintain water temperatures within the specified limiting conditions. The objective of operating the dilution pumps in the prescribed manner is to minimize the occurrence of adverse biological ef fects in Oyster Creek and contiguous water.
There were no harmful marine biological ef fects observed during the period when an insuf ficient number of dilution pumps operated.
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Nonroutine' Environmental Operating Report Page 2 Report No. 50-219 82-8-2 Corrective Action Immediate corrective action involved putting dilution pump 1-3 in operating, using the fire water system instead of the seal water system.
Long term action, per a submittal to the Nuclear Regulatcry Commission on July 1.,1981, involves a total dilution pump refurbishment program designed to improve the reliability and operability of the pumps. This includes upgrading of the dilution pump seal water and lubricating oil cooling water systems, pipe line strainers, pipe and heat tracing and overhaul of dilution pumps.
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