ML19305D779

LER 80-022/03L-0:on 800318,w/Unit 1 in Mode 6,nonessential & Train a Air Header Isolated Valves O-FCV-32,-82,-80 & -110 Closed,Causing 1-FCV-90-108,-115,-109,-116,-114 & -110 to Close.Cause Unknown

ML19305D779
Person / Time
Site:	Sequoyah
Issue date:	04/11/1980
From:	Record D TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19305D773	List: ML19305D772 ML19305D779
References
LER-80-022-03L-01, LER-80-22-3L-1, NUDOCS 8004150512
Download: ML19305D779 (1)

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7 8 6J 61 r,;,4t t T ,.Uf.1g g 4 EVENT DESCRIPTION AND PROSASL! CONSECUENCES h

,oi2i l With unit 1 in Mode 6 the non-essential and Train A air header isolated, f

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.---- o 3 i-valves 0-FCV-32',~ -827 280, ant -lio closed. This caused 1-FCV-90-108. I io6.iI -115, -109, -116, -114, and -110 to'close. These valves urovided flov -

I rsTT1 I 'tocon'taihimenttipperandlowercompartmentradiationmonitorsandwere i FFTs1I therefore inoperable. T.S. LCO 3._] )_.1 recuires these monitors be I

g i operable. There was no danger to the health and safety of the public. L

[oiait No previous occurrences.

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