ML20040C626

Nonroutine Environ Operating Rept 50-219/81-6-2:on 811121, Dilution Pump 1-2 Tripped Leaving Only Dilution Pump 1-1 Operating for More than 15 Minutes & Ambient Water Temp Less than 60 F.Cause of Trip Not Determined

ML20040C626
Person / Time
Site:	Oyster Creek
Issue date:	12/22/1981
From:	JERSEY CENTRAL POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20040C598	List: ML20040C597 ML20040C607 ML20040C615 ML20040C620 ML20040C626 ML20040C631
References
NUDOCS 8201290096
Download: ML20040C626 (2)

Text

_

0YSTER CREEK NUCLEAR GENERATING STATION Forked River, New Jersey 08731 Nonroutine Environmental Operating- Report No. 50-219 81-6-2 Report Ihte Decenber 22, 1981 Occurrence Date November 21, 1981 s

U identification of Occurrence -

Exceeding a limiting condition as defined in the Environmental Technical' Specifications, paragraph 2.1.4.3, when an insufficient number of dilution pumps were in operation as specified in paragragh 2.1.4.2. Iess than two dilution pumps were operating f or greater than 15 minutes, and the ambient water temperature was less than 600F.

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 Steady State Power Dilution Pump Flow 2.60 E5 GIM Circulating Water Pump Flow 4.60 E5 GIH Prior to the occurrence, the ambient water temperature in the intake canal was 4 9. 3oF. The condenser discharge water temperature was 62.00F, and the- U. S.

Route 9 Discharge Bridge temperature was 54.00F.

Description of Occurrence At 1006 hours0.0116 days <br />0.279 hours <br />0.00166 weeks <br />3.82783e-4 months <br /> on November 21, dilution pump 1-2 tripped out of service leaving only dilution pump 1-1 in operation. At 1031 hours0.0119 days <br />0.286 hours <br />0.0017 weeks <br />3.922955e-4 months <br />, dilution pump 1-3 was put into service.

A 37 minute time period elapsed before pump 1-3 could be started; this is due to the route of access from the third floor of the Office Building to the dilution pumps, also the time required to investigate the dilution pump failure.

The ambient water temperature was less than 600F from 1006 - 1031 hours0.0119 days <br />0.286 hours <br />0.0017 weeks <br />3.922955e-4 months <br />.

9201290096 PDR ADOCK h9 ppg S

7 ,-(. ex J. d

~

c. -

,'S w .

1

1. p .Nw s . .

yL ,

s'

• * \

s 3 ,.

Nonroutine Environmental Operating I& port ' 's N Page 2 Report No. 50-219 81-6-2 3

,-Q N '

i

, s j

~

Apparente Cduse of b.currence g

C

.) ; s

'We"c'a%9e of 'the trip,fnuld not be determined ,2t the time of thc occurrence.

Howev9r, previous histbry ind kc,<tes that incide,nts of this nature have been attriluted to high lubricating oil temperatures and low seal water. pressure.

It is possible that.one-of thgd factors or a combination of these factors '

could have caused idt d'ilution.pamp.to fail. 3, '

n-

.yn w~

'y .

e

. ~. .

Analysis of Occurrence T

-1 fc_

m Tlic con:Inous operati4it of the dilution pumps 1,s required to maintain wacer

\tentperatur2s within s@e specified limitis 49nditions. We objective -of operatidg 'the d,ilation' pumps "in- the p'escribed m5aner is to minimize the '

occurrence of adyerss biological effectrin Oysty Creek and contiguous water.

Since the operation of an insufficient number of dilution pumps was of limited s

S duration, thera~ ywere noIharmful marine

., b biological effects observed.

., s g , -

y s

' ~

Corrective Ac tion ,- ,

. ,, a i s ex4 n ,- , , t'

, gw .s -

Immediate corrective action involvediatarting dilution pump 1-3. s' '.

% , . . g, -

s Long term action,' as per a submittal to the Nuclei etory Commission on y designed to ithprove

~

July 1,1981,)a total s dilution pump , improvement pm their reliability and operability , is if( progress. ItLie,, includes upgrading of the dilutiam }. ump seal, water and lubriciting o.11 cooling' water systems,, pipe.

line strainerby.piyJyind heat tracing and 'overhat:1 of, the' actual-dilution' pumps.

1 ~ ' ~~ y

5. ' q 3

, s ,

• \, .,..

% h '

' ~

b D

'g * -,

) q. p 7

.* t, ,

A w.

M

• 7 4

'O .<

s. ,

s j

C y ,

'% ~

_ u N' g j.

h. g .

' *,. h. . 'N , A g 6

'h

~~

% ' .y '-*="'S ,

h,

'O .

• n y

% h.x.

T s

• x A

',, s . .W TV k j .

. - . -- , . _