ML19317G022

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Unusual Event UE-76-02:on 760512,grab Sample of Plant Effluent Showed Chlorine Levels in Excess of Tech Spec Limits.Caused by Crack Near Top of Hypochlorite Tank.Tank Replaced
ML19317G022
Person / Time
Site: Rancho Seco
Issue date: 12/03/1976
From: Colombo R, Eisenhuth F
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19317F926 List:
References
NUDOCS 8002210725
Download: ML19317G022 (1)


Text

i LICENSEE EVENT REPOPT I

CONTROL 8tOcx I l

l l

I I

I (PLEASE PRINT ALL REQUIRED INFORMATION) 1 8

AME LCENSE NUMBER TV

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lC l A l Rl Sl Sl 1l l0 l0 l

[ 0l 0l 0l0 l0 l_l 0 l 0 l l 4l 1l1l 1l 1l l0 l3 l l

7 ag 14 15 25 26 30 31 3'c CATEGORY Y

o DOCKET NUMBEA EVENT DATE REPCAT CATE O CON 7 l Ml Il l0l lL !

l0 l 5 l 0 l-l 0 l 3l 1l 2l l 0l 5l 1 l 2 l 7 l 6 l l1 l2 lV [ 3 l 7 l 6 l 7 8 57 58 59 60 61 68 89 74 75 80 EVENT OESCRIPTION Q l On May 12, 1976, a grab sample of plant effluent showed chlorine levels of 0.8 mg/1.

l 7 89 80.;

C l A later site boundary sacole showed concentrations of 0.4 mg/l which exceeds Tech.

l3 7 89 80 l

EI lSee. If-fen.

Other instances of hich chlorine releases have been reported with l

7 89 80 causes.

(LTE 76-2) l 2 39 ldifferent 7 89 80 EE I I :-

7 89 pqME 80 _,

E CODE CCMPCNENT CCCE A

MANUFA A

VOLATON RE l Wl Dl W l X l X l Xl Xl Xl X l lAl l Mj3 l2 l5 l l Yl 7 89 10 11 12 17 43 44 47 48

' ' 'g CAUSE OESCAlPTION a

l The hypochlorite tank had a crack near the top.

Mixing of a partial tank whs done l,

7 89 80 -

l improperly (with possibly a spill through the crack) causing the release. The tank' l

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l 09

80. 7

!.., e vnnincna.

NRC RExion V was notified at the time of the event.

Reporting was l3 FACourt METHCO OF STATUS

% POWEA OTHER STATUS DISCOVERY 0:SCOVEAY CESCAPTION lG l l0 l 0 l 0 l l

NA l {

l NA l

t

' 8 9

10 12 13 44 45 48 80 AC fiVITY CONTENT

,s AfLEASED OF AELEASE l g

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AMOUNT OF ACTivrTY LOCATION OF GELEASE

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' H 9

10 11 44 45 BO' 1

PElSONNEL EXPOSUAES

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N W efR TYPE CESCAtPTON

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' 89 11 12 13 80 -

AEASONNEL INJURIES

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NLMOE A CESCA1PTION

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@ l0l 0l0l l NA l

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' d9 11 12 80 GFFSITE CONSEQUENCES 1

8 I ninimal to none l

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~

80 LOSS OR OAMAGE TO FACILITY

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'#E DESCAPicN NA l

10 80 R ELtCITY l

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,t Mg local papers notified December 15, 1976 l

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80 1l j (X [700mONatheld pending clarification of chlorine limit by NRC.

800221072 7 FacronS lw j..;

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3-R.W. Colombo /F.T. Eisenhuth (916) 452-3211

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NAME.

PHONE:

GPO 8Al.667

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