ML19318C506

LER 80-081/03L-0:on 800527,during Timing of 1-FCV-72-20, Containment Sump to Train B of Containment Spray,For Surveillance Test 166.1,valve Would Not Open.Caused by Switch Controlling FCV-72-20 Being Out of Adjustment

ML19318C506
Person / Time
Site:	Sequoyah
Issue date:	06/25/1980
From:	Romine D TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19318C498	List: ML19318C497 ML19318C506
References
LER-80-081-03L, LER-80-81-3L, NUDOCS 8007010541
Download: ML19318C506 (1)

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0%t'*f D~i,')[Dur_ing th,e tining of 1-FCV-72-20, containment sump to train B.of ,

[;3- j (containment spray, for surveillance test 166.1, it was discovered .

[ .q) [tpat ,this. valve woula not open. This' rendered train B of the con-( E J! t,ainment spray system inoperable thus resulting in entering the g taction statement of I.C0 3.6.2.1. .

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[3 .;! nvestigation I revented that FCV-72-20 is Interlocke d with FCV-74-21

[. {rj :Further investigition revealed that FCV-74-21 close interlock limit _. +

,g switch controlling FCV-72-20 was not closrd due to the limits being ,

i & J[out of adjustment.. This.would not allow FCV-7.2-20 to operate properly. , .

[~ lLThe interlock limits on FCV-74-21 were re-adjusted and the system declared

, :oyr5blE3f tdr E6nctl'ona11y testin' 'FCV-72;-20. g

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