ML18136A347

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Ro:On 791207,when Radiation Alarm Setpoint Reached in Discharge Line of Air Ejectors,Trip Valves Diverted Air Into Containment.Caused by Improper Initial Design Concept.Mods to Maintain Valve Closed Initiated
ML18136A347
Person / Time
Site: Surry Dominion icon.png
Issue date: 12/10/1979
From:
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8001030771
Download: ML18136A347 (1)


Text

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a radi.at:i.ou a.l.arla setpoint:

1.s reached in the cHs.cbarge.

Uni'! oi ! ID I .. ] I tbe a:ir eject:.ol:'s of lm:it:s 1 &. 2. tt1p val.ves di..-ve~ -a:1.r ~o the CDni:.afnmeni:.

A CLS Hi I signal w:U1 close the Containment valve$ l:f t:he CLS 1li signal .i.s reset am a nM.a.'tl Lala:n! i.s stm pr~t. £he val.ve v1.ll r@Open vi.t:hcut:

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  • 1 an ~C"P't!r ini.tial d.asign c.rn:eept.

A rlet.alled an.a.l.ysis has been iru.'ti.a't'.ed aru:l modii I tious rill he ~de CD mainuin the va1ve cl.osed fa,Uavuig the res.et~ cf :he CLS nj

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