ML20052H305

LER 82-030/03L-0:on 820421,HPCI Steam Supply Pressure Switch PS-2246A Setpoint Found Above Tech Spec Limit.Caused by Instrument Drift.Switch PS-2246A Recalibr & Tested

ML20052H305
Person / Time
Site:	Duane Arnold
Issue date:	05/14/1982
From:	Hill K IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20052H302	List: ML20052H301 ML20052H305
References
LER-82-030-03L, LER-82-30-3L, NUDOCS 8205200181
Download: ML20052H305 (1)

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8 4 60 El CCCKET Ngugen to 89 GVENT QATE is AEPQAT QATR EVENT DESCRIPTION AND PR08 A81.E CONSECUENCES h Io i 21 i During normal ooeration while performina surveillance testing, HPCI stea i g i m supply pressure switch PS-2246A was found to have a setpoint of 110 ps I lo#4l l iq. PS-2246A initiates the isolation of HPCI when steam pressure drops b I Io Isl I einw that required to adeauately drive the HPCI turbine. Tech. Spec. Tab I lo le 1 I le 3.2.R specifies a setnoint of 50 to 100 osio for PS-2246A. Redundant I 10!71 I switches were coeratino oroceriv. There have been no orevious similar oc I I o is i I currences. I 7 8 9 50 CE CC 4 St C E COMPCNENT CCOG SUSCCCE $U ce loisi 7 8 1 l Cl Fl@ l El@ l El@ l Il NI Si Tl Rl t1@ l S l@ W @

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2 a v <a as CauSE oEsCairTicN ANO COAAECTIVE ACTICNS h litoll The event cause was instrument drift. PS-2246A was recalibrated and test I t i li i I ed satisfactory. PS-2246A is a Barksdale Model B2T-M12SS pressure switch I m 'l . No further corrective action is planned at this time. I Iii 2 6 I I U ,14, ] I I 7 e a na sTA %Powfm QTheR STATt.'S Of RY OISCCVERY QESCAi# TION li is I l El@ l' 014 l 9l@gA l lB[gl Surveillance Test l

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