05000368/LER-1981-007-03, /03L-0:on 810206,control Room Emergency Chiller, 2VE-1B,tripped.Caused by Low Suction Pressure Due to Leaking Expansion Valve.Valve Repaired & Sys Refilled W/Freon

/03L-0:on 810206,control Room Emergency Chiller, 2VE-1B,tripped.Caused by Low Suction Pressure Due to Leaking Expansion Valve.Valve Repaired & Sys Refilled W/Freon

ML20008F236
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/04/1981
From:	ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20008F233	List: 05000368/LER-1981-007-03, /03L-0:on 810206,control Room Emergency Chiller, 2VE-1B,tripped.Caused by Low Suction Pressure Due to Leaking Expansion Valve.Valve Repaired & Sys Refilled W/Freon
References
LER-81-007-03L, LER-81-7-3L, NUDOCS 8103120610
Download: ML20008F236 (1)

LER-1981-007, /03L-0:on 810206,control Room Emergency Chiller, 2VE-1B,tripped.Caused by Low Suction Pressure Due to Leaking Expansion Valve.Valve Repaired & Sys Refilled W/Freon

Event date:
Report date:
3681981007R03 - NRC Website

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, con EVENT DESCRIPTION AND PRQ9 ASLE CONSEOut%CES h IDurino Mode 1 operation, while performina monthly surveillance testino of1 o a iof the control room emergency chiller, 2VE-1B, it was declared inoperable.

- si lThe alternate Emergency Chiller 2VE-1A remained operable.

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linvolvino the Emeroency Control Room Chillers are LER's 50-368/79-050.

I e s 179-53,79-058, 79-076,80-026, 80-054,80-070 and 80-092.

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CAust C' acAPTION AND CORRECitV( ACTIONS 27 IInvestigation revealed the unit had tripoed due to Low Suction Pressure. i

. o E) IThc exoanrion valve had develooed a leak and the loss of pressure czused i Ithe low pressure trip. The valve was repaired and the system was refilledi Iwith freon. The unit was returned to operable status meeting the require i 3

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