ML20009E510

LER 81-039/03L-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

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: ML20009E504 ML20009E510
References
LER-81-039-03L, LER-81-39-3L, NUDOCS 8107280264
Download: ML20009E510 (1)

Text

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U. S. NUCLEAR REGULATORY COMMISSION N FORR(,366 (7 77)

LICENSEE EVENT REPORT CONTROL BLOCK: l i

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 10111 I cl LICENSEE ol vi sCODE i vl i l@l o l o l 14 15 lolololnlol LICENSE NUMBER l o l o25l@l26 4 liLICENSE 1112TYPE l oJGl@l57 CATl l@

58 7 8 9 CON'T lO111 [o'[a"c, l L }@l 01510 l 0 l 0 l 21617 68

@l69 016 l 0121811 l@l0 l 7REPORT EVENT DATE 74 75 l0 lDATE 2 l 8 l150 l@

7 8 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

[O l: 1 l During a maintenance shutdown period, operations personnel routinely chlorinated the i The sample indicated the residual l g o ;3 ; j circulating water system and sampled as required.

j o ;4] l chlorine in the plant liquid effluent to be in excess of the LCO NR 1.1 limit. This l l0 is1 I is reportable per Fort St. Vrain Technical Specification AC 7.5.2(b)2.

No effect on l l

l 0 l6 l l Public health or safety. No accompanying occurrence.

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12 13 TS 19 20 7 8 9 10 11 REVISION SEQUENTI AL OCOURRENCE REPORT REPORT NO. CODE TYPE NO.

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44 33 34 35 36 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 11 101 l No soecific cause could be fem d vnr hi 7 h rnd anni e h1nM en 1 g 7,1 . The chlorination i I

It Iil i system and circulating water blowdown systems were cuecked and found to be coeratinc l

I i 6 21 l normally. Subsequent chlorinat! .ns revealed no equipment abnormalties and normal l

l3 i3l l residual chlorine levels.

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. i l 41 l 80 7 8 9 OTHER STATUS dis O RY DISCOV ERY DESCRIPTION STA S  % POWER Operator Observation l l1 15l W @ l0l0l0lhl N/A l d hl ACTIVITY CONTENT AMOUNT OF ACTIVITY LOCATION OF RELEASE RELEASED CF RELEASE N/A l l1l61 @ @l N/A I l PERSONNEL EXPOS ES NuM8ER TvPE cESCRiPTiON@

y [0 j 0 l 0 l@l Z l@l N/A l IES PERSONNE L INJU NuM ER oESCRiPTiO~@. l W l 80101 7 9 Ol@l N/A 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE CESCRIPTIC 4 l

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• 0107280264 810702 NRC USE ONLY ISSU DESCRIPTION @ PDR ADOCK 05000267 ,

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' l PHONE:

(303) 785-2224 g NAME OF PREPARER

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