05000317/LER-1979-024-04, /04T-0 on 790712:while Regenerating Condensate Deep Bed Demineralizer,Caustic Solution Discharge Occurred. Caused by Equipment Malfunction.Affected Valve Will Be Repaired

/04T-0 on 790712:while Regenerating Condensate Deep Bed Demineralizer,Caustic Solution Discharge Occurred. Caused by Equipment Malfunction.Affected Valve Will Be Repaired

ML19242C501
Person / Time
Site:	Calvert Cliffs
Issue date:	07/26/1979
From:	Eherts R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19242C500	List: 05000317/LER-1979-024, Forwards LER 79-024/04T-0 05000317/LER-1979-024-04, /04T-0 on 790712:while Regenerating Condensate Deep Bed Demineralizer,Caustic Solution Discharge Occurred. Caused by Equipment Malfunction.Affected Valve Will Be Repaired
References
LER-79-024-04T, LER-79-24-4T, NUDOCS 7908100491
Download: ML19242C501 (2)

LER-1979-024, /04T-0 on 790712:while Regenerating Condensate Deep Bed Demineralizer,Caustic Solution Discharge Occurred. Caused by Equipment Malfunction.Affected Valve Will Be Repaired

Event date:
Report date:
3171979024R04 - NRC Website

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60 61 DOCKET NUMf ER od 69 EVENT CATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h During nomal operation while regeneratino a condensate deep bed demineralizer o

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approx.160 gallons of caustic solution neutralized by 100 gallone of acid I

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were discharged via outfall 002. The discharge occurred over a 90 minute time I

period at approx. 2.6 gpm and was diluted bv a discharge water flow of approx.

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(For further description, see attached sheet).

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Cause 5as been deteminea to be equipment malfunction.

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discharge. Subsequent corrective action will involve the repair of the affected

valve. Additional corrective action is not required because of the nature of this occurrence.

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R. F. Eherts (301) 234-7941 NAME OF PREPARER PHCNE.

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LER NO. 79-24/4T DOCKET N0. 50-317 EVENT DATE 07/12/79 REPORT DATE 07/26/79 ATTACHMENT EVENT DESCRIPTION AND PROBABLE CONSEQUENCES:

During nom.al plant operation, while regenerating a condensate decp bed demin-eralizer, an inadvertent discharge of regenerant waste occurred. Approximately 160 gallons of caustic solution (50 wt%) (06% dilution) were discharged via Outfall 002 together with 100 gallons of acid (99 wt%) (10% dilution) which served to neutralize the base. The discharge occurred over a 90 minute period with an approximate flow rate of 2.6 gpm which was subsequently diluted with approximately 5.00E05 gpd of discharge water flow.

CAUSE DESCRIPTION AND CORRECTIVE ACTION:

The cause of this reportable occurrence has been determined to be equipment error.

Immediate corrective action involved isolatte, of the system to eliminate the chemical discharge.

Subsequent corrective action will involve repair of the affected system component. Since the failure of this valve to fully seat has not occurred in the past five years of operation, it 's felt that this is not a generic problem. Thus, no preventative measures will be taken at this time.

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