05000317/LER-1979-058-03, /03L-0:on 791004,component Cooling Heat Exchanger 11 Removed from Svc for Corrective Maint on Operator for Heat Exchanger Salt Water Outlet Valve 1-CV-5206.Valve Would Not Open Due to Faulty Pneumatic Converter.Adjustments M

/03L-0:on 791004,component Cooling Heat Exchanger 11 Removed from Svc for Corrective Maint on Operator for Heat Exchanger Salt Water Outlet Valve 1-CV-5206.Valve Would Not Open Due to Faulty Pneumatic Converter.Adjustments Made

ML19254F286
Person / Time
Site:	Calvert Cliffs
Issue date:	11/02/1979
From:	Heibel R, Rizzo P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19254F283	List: 05000317/LER-1979-058, Forwards LER 79-058/03L-0 05000317/LER-1979-058-03, /03L-0:on 791004,component Cooling Heat Exchanger 11 Removed from Svc for Corrective Maint on Operator for Heat Exchanger Salt Water Outlet Valve 1-CV-5206.Valve Would Not Open Due to Faulty Pneumatic Converter.Adjustments M
References
LER-79-058-03L, LER-79-58-3L, NUDOCS 7911070472
Download: ML19254F286 (1)

LER-1979-058, /03L-0:on 791004,component Cooling Heat Exchanger 11 Removed from Svc for Corrective Maint on Operator for Heat Exchanger Salt Water Outlet Valve 1-CV-5206.Valve Would Not Open Due to Faulty Pneumatic Converter.Adjustments Made

Event date:
Report date:
3171979058R03 - NRC Website

text

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LICENSEE EVENT REPORT CONTROL BLOCK: l l

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1 l

l (PLEASE NT OR TYPE ALL REQUIRED INFORMATION) x)

14 10 JC lC IN 11 @l5 01 0 -l010 OlOlOl-010 @'4 Il 11 11 1

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1 LICENSE NLYSER 25 26 LICE %SE TY PE JO 57 GT 58 S 9 LICENSEE CODE 14 s

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8 60 61 COCK ET NuYS E A 0a 69 EV E*' T D ATE 74 75 AEPOAT O ATE 80 EFENT OESCRIPTION AND PROBABLE CONSEQUENCES'h

! L t 1100 on October 4, 1979, #11 Component Coolina Heat Excharir was i

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I removed from service to perfom corrective maintenance on the operator i

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lfor the Heat Exchancer Saltwater outlet valve (1-CV-5206). The problem I

o with the operator was corrected and the Heat Exchanger was returned

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e i to operation at 1455, October 4,1979.

(T. S. 3.7.3.1).

This is not 1

Ol7 la repetitive occurrence.

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CODE TYPE NO.

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33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l Valve 1-CV-5206 would not open until a 20% open electrical signal was i

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i generated from its controller. This was due to its faulty current to i pneumatic converter. The converter was recalibrated and valve position i

switches were adjusted. The valve had been operational from a safety l

3 i outside standpoint. No preventive action is deemed necessary.

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8 9 10 R. Heibel/P. Rizzo pgoyg;(301)234-7943/7986 NAME OF PREPARER