ML20071B091

RO 83-1-1:on 830113,dilution Pump 1-2 Removed from Svc. Caused by Insufficient Seal Water flow.Long-term Corrective Action Includes Program Designed to Improve Pump Reliability

ML20071B091
Person / Time
Site:	Oyster Creek
Issue date:	02/14/1983
From:	GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20071B084	List: ML20071B082 ML20071B091 ML20071B095 ML20071B102
References
RO-83-1-1, NUDOCS 8302250330
Download: ML20071B091 (2)

Text

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.- -4 OYSTER CREEK NUCLEAR GEriERATING STATION Forked River, New Jersey 08731 Nonroutine Environmental Operating Report No. 50-219 83-1-l' Report Date February 14, 1983 Occurrence Date January 13, 1983 _

Identification of' Occurrence Exceeding a limiting condition as defined in the Environmental Technical

-Specificatic c, paragraph 2.1.4.3 -- less than two dilution pumps were operating for greater than 15 minutes, and ambient water temperature was less than 60*F.

This event is considered to be a Nonroutine Environmental Report as defined in the Technical 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 40.5'F. The condenser discharge water temperature was 51.9'F, and the U.S.

Route 9 Discharge bridge temperature was 43.7*F.

Description of Occurrence At 1338 hours0.0155 days <br />0.372 hours <br />0.00221 weeks <br />5.09109e-4 months <br /> on 13 January, dilution pump 1-2 was removed from service, leaving only dilution pump 1-3 in operation. Dilution pump 1-2 was returned to service at 1354 hours0.0157 days <br />0.376 hours <br />0.00224 weeks <br />5.15197e-4 months <br />.

Apparent Cause of Occurrence Dilution pump 1-2 was removed from service to ctart-up and test dilution pump 1-1 after maintenance had been completed on it. Dilution pump 1-2 was removed from service prior to the start-up and test of dilution pump 1-1 because there was insufficient seal water flow to effectively operate all three dilution pumps. During tre start up and test activity, station personnel were unable to start pump 1-1, as a result dilution pump 1-2 was not restarted within the specified time.

8302250330 830214 PDR ADOCK 05000219 S pop

. i Nonroutine Environmental Operating Report .Page 2 Report No. 50-219 83-1-1 Analysis of Occurrence

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- The 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 effects in Oyster Creek and contiguous water. There were no harmful marine biological effects observed during the period when an insufficient number of dilution pumps operated.

Corrective Action

' Immediate corrective action involved putting dilution pump 1-2 in operation.

Long term action, per a submittal to the Nuclear Regulatory 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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