ML19338D652

LER 80-046/03L-0:on 800820,w/plant Operating at Approx 25% Thermal Power,Pcrv Cooling Water Outlet Temp Exceeded 120 F Limit.Caused by Isolation of Cooling Water Due to Operation of Wrong Controllers.Controllers Reset to Proper Position

ML19338D652
Person / Time
Site:	Fort Saint Vrain
Issue date:	09/19/1980
From:	Gahm J PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19338D643	List: ML19338D642 ML19338D652
References
LER-80-046-03L, LER-80-46-3L, NUDOCS 8009230607
Download: ML19338D652 (1)

Text

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iPLEASE PRINT OR TYPE ALL REQUIRED INPORAMTION) lohj 7-l C l'oUCENSEE 89 l F I CODE S I. V l i l@l o I? l- I uCENSE 14 15 c lo NUMBER lo lo lo ~l- lo' 25lo -l@l411 26 11 12 lol@l-l'l@

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4 ' 60 61 CoCKET P.UMSER 68 - 69 EVENT DATE 74 75 REPORT CATE do

~ EVENT DESChtPTION AND PROSABLE COr4 SEQUENCES h

-I o 121 1 From 1000- to 1115 hours0.0129 days <br />0.31 hours <br />0.00184 weeks <br />4.242575e-4 months <br /> onDaugust 20. 1980, with the plant operating at approximately l q l 25% thermal power, PCRV cooling water outlet -temperature exceeded the 120*F limit of ~ l_

i o i 4 I l LCo 4.2.15 b) . - Degraded mode nf LCO 4.2.15, reportable per Fort St. Vrain Technical I ings; l Specification AC 7.5.2(b)2. No accompanying occurrence or probable consequences. No' l I

t o le l l affect on public health and safety. I lo l 71 I l' totalI l

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40 - 41 42 43 .. 44 47 CAUSE CESCRIPTION AND CORRECTIVE ACTIONS 47 l i t o l ICause of increased temperature was isolation of cooling water due to ooeration of the I-m l wrong controllers. Upon discoverv of the out of limit temoeratures. tha con **ntla-= 1 g lwere returned to the proper position. Temperatures returned to acceptable limits by l It l a I l 1115 hours0.0129 days <br />0.31 hours <br />0.00184 weeks <br />4.242575e-4 months <br /> and no further degraded mode operation was observed. (

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