05000267/LER-1981-039-03, /03L-0:on 810602,following Routine Chlorination of Circulating Water Sys,Sample Indicated Excessive Residual Chlorine in Plant Liquid Effluent.Cause Unknown.Subsequent Chlorinations Showed No Abnormalities

/03L-0:on 810602,following Routine Chlorination of Circulating Water Sys,Sample Indicated Excessive Residual Chlorine in Plant Liquid Effluent.Cause Unknown.Subsequent Chlorinations Showed No Abnormalities

ML20009E510
Person / Time
Site:	Fort Saint Vrain
Issue date:	07/02/1981
From:	Mcbride L PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20009E505	List: 05000267/LER-1981-039, Forwards LER 81-039/03L-0.Detailed Event Analysis Encl 05000267/LER-1981-039-03, /03L-0:on 810602,following Routine Chlorination of Circulating Water Sys,Sample Indicated Excessive Residual Chlorine in Plant Liquid Effluent.Cause Unknown.Subsequent Chlorinations Showed No Abnormalities
References
LER-81-039-03L, LER-81-39-3L, NUDOCS 8107280264
Download: ML20009E510 (1)

LER-1981-039, /03L-0:on 810602,following Routine Chlorination of Circulating Water Sys,Sample Indicated Excessive Residual Chlorine in Plant Liquid Effluent.Cause Unknown.Subsequent Chlorinations Showed No Abnormalities

Event date:
Report date:
2671981039R03 - NRC Website

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U. S. NUCLEAR REGULATORY COMMISSION N

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 50 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h [O l: 1 l During a maintenance shutdown period, operations personnel routinely chlorinated the i circulating water system and sampled as required.

The sample indicated the residual l g o ;3 ; j j o ;4] l chlorine in the plant liquid effluent to be in excess of the LCO NR 1.1 limit. This l is reportable per Fort St. Vrain Technical Specification AC 7.5.2(b)2.

No effect on l l0 is1 I l 0 l6 l l Public health or safety. No accompanying occurrence.

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i system and circulating water blowdown systems were cuecked and found to be coeratinc It Iil I i 6 21 l normally. Subsequent chlorinat!.ns revealed no equipment abnormalties and normal l

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