ML20071B095

RO 83-2-1:on 830118,dilution Pump 1-1 Removed from Svc Due to Steam Around Flax Packing Gland.Caused by Wearing in of New packing.Long-term Corrective Actions Include Upgrading Dilution Pump Seal

ML20071B095
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-83-2-1, NUDOCS 8302250332
Download: ML20071B095 (2)

Text

--.~  %.

OYSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Nonroutine' Environmental Operating Report No. 50-219 83-2-1 Report Date February 14, 1983 Occurrence Date January 18, 1983 Identification of' Occurrence Exceeding a limiting condition as defined in the Environmental Technical Specifications, 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 cs 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 34.8'F. The condenser discharge water temperature was 46.7'F, and the U.S.

Route 9 Discharge bridge temperature was 34.7'F.

Description of Occurrence At-1040 hours on 18 January, dilution pump 1-1 was removed from service, leaving only dilution pump 1-3 in operation. Dilution pump 1-1 was returned to service at 1057 hours0.0122 days <br />0.294 hours <br />0.00175 weeks <br />4.021885e-4 months <br />.

Apparent Cause of Occurrence Dilution pump 1-1 was removed from service because a flax packing gland was steaming around a shaft of the dilution pump at the water box end. However, upon further investigation the flax packing gland was determined to be in good working condition. The steam was apparently caased by wearing in of the new packing. Due to the time involved in making a determination a second dilution pump was not put into operation within the specified time. Dilution pump 1-2 was not immediately started as the operator expected to restart pump 1-1 within the 15 minute requirement.

~

K0$00 PDR

... Y Nonroutine Environmental Operating Report Page 2' Report No. 50-219 83-2-1 Analysis of Occurrence 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' restarting dilution pump 1-1.

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.

l l

l

)

1

- , . --