ML19207B374
| ML19207B374 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 08/14/1979 |
| From: | JERSEY CENTRAL POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19207B371 | List: |
| References | |
| NUDOCS 7908240522 | |
| Download: ML19207B374 (2) | |
Text
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Madison Avenue at Punch Bowi Road Mornstown, New Jersey 07960 (201) 455-8200 OYSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Nonroutine Environmental Operating Report No. 50-219/79-3 Report Date August 14, 1979 Occurrence Date July 19, 1979 Time of Occurrence 00:22 to 00:40 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 nonroutine environmental operating report as defined in the Technical Specifications, Appendix B, paragraph 5.6.2.
Conditions Prior to Occurrence The plant was operating et steady state power.
Dilution Pump Flow:
5.2 x los gpm Circulating Pump Flow:
4.6 x 105 gpm Power:
Reactor 1818 MWt Electrical 606 MWe Description of Occurrence At 00:22 of July 19, 1979, dilution pump #3 tripped out of service.
Dilution pump #2 was not started until 00:40.
This was not in conformance with the limiting condition of operation which requires that the reserve dilution pump be placed into service within fifteen minutes whenever there is an in-sufficient number of dilution pumps operating to meet the intent of the specifications.
Apparent Cause of Occurrence Dilution pump #3 f. ripped out of service because of low seal water pressure.
The low seal wate pressure was due to a buildup of seaweed in the seal water pump section(s).
F -ior to starting the reserve dilution pump, the suction a
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- a.'. -s, Nonroutine Environmental Operating Report No. 50-219/79-3 Page 2 August 14, 1979 of the backup seal water pump had to be cleared.
Once this was accomplished, a normal startup of dilution pump #2 was performed.
Analysis of Occurrence During this occurrence, no unusual environmental effects were observed.
Records of the discharge bridge temperature for the period show no unusual variations (less than 1*F. change). With respect to these slight variations in the discharge bridge temperaiures, no unusual environmental effects would be expected.
Whenever an insufficient number of dilution pumps are available to meet the intent of the specifications, the Technical Specifications allow station operation for a pericd of fourteen days in order to make necessary repairs.
Corrective Action The immediate corrective action was to clear the suction bell of the seal water pump so that sufficient seal water would be available to start the reserve dilution pump.
Fjailure Data N/A o
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