ML20085E423

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LER ER-76-046:on 761225,drain Valve Not Closed Upon Neutralizer Tank Drainage Completion During Shift Change. Caused by Poor Communications Between Operating Shifts & by Operator Error.Procedures Revised
ML20085E423
Person / Time
Site: Palisades Entergy icon.png
Issue date: 01/11/1977
From: Bixel D
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-ER-76-046, LER-ER-76-46, NUDOCS 8308110437
Download: ML20085E423 (2)


Text

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bENSEE EVENT REPORT O 1

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. EVENT CESCRPT:ON (Classited on 12-28-76 as a Reportable Occurrence)

BE l During a shift chsnge on 12-2h-76 s neutrsliter tank vss t eine drsined. N e on-l 7 89 80 SE l co=ing operator did n'ot close the drain valve on ec=pletion of the release. Two l

7 gg 80

@ l denineralizer regeneratiens were cenducted the folleving dsv vith retenerstien l

7 69 80 UC l chemicals passine through the neutrali:er tank onen drsin vsive to the plant discharge l 7 89 80 0

l =ixing basin. The open drain valve vas discovered (Sae Tine 10 I

7 89 (ER-76 k6) 80 n=Me SYSTTM CAUSE COMP 0Ned?

COMpCNest CUCE CCCE CCMPCNENT CCCE sumuss N

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7 89 10 11 12 17 43 44 47 48 CAUSE CE5CRPT:0N Oe l The cause of this occurrence was both the result of poor ec=nunication between l

7 89 80

@l operating shifts and ocerator errer. The operator has been advised of the necessity l 7 89 80

)l to close the d-ain valve and tracedure chanres are beine.:ade to recuire checkin: the l 89,drap valve closed.

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% powEn othan STATUS C;SCCvtRY CSCOVERY CESCRIPTCN 8

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10 12 13 44 45 46 80 GT CCNTENT AELEASED QF DELEASE AMOUNT CP ACTVTY LCCATCN CF AELEASE l112l NA NA I

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10 11 44 45 80 PERSCNNEL EXPCSURES NuM8ER TYPE CESCA6pTCN 13 l0l0 l0 l

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7 89 11 12 13 S0 i

FEASONNEL INJUAIES NuM8tR CESCRWTCN l0l0 l0 l l

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34 7 89 11 12 80 PR02ABLE CCNSEO.UENCES lII5) l This event is not related to the safe operation of the plant.

l 7 89 80 LOSS CA DAMAGE TO FAC:LITY TYPE CESCA@TCN Q

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7 89 10 80 PUBUC.iY 17 l None l

7 89 80 ACCmONAL FACTCAS dl followinz the second rezenerstien.

Arc-eximstely 1.000 nilens of 3.55 NaCH snd l

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ggg g 1,h00 gallons total of 25 and h5 H So vere released.

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l o.n.,.i ome..: on w..i u.cmo.n 4..no., s.cm.on, u cus.n.osoi. 4,.. coa. air vas.oseo January 11, 1977

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Mr James G Keppler Office of Inspection & Enforcement Regien III US Nuclear Regulatory Cc:-ission T99 Roosevelt Road i

Glen Ellyn, IL 60137 DCCKET 50-255, LICENSE DPR PALISADES PIXIT - ER-76 k5 -

DISCEARGE WITHOUT PRIOR NEUTRALIZATION The attached event report relates to the inadvertent discharge of chemicals vithout proper neutralization.

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vi David A Bixel I

Assistant Nuclear Licensing Administrator 1

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.q. 1 7 1977 r

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