ML20010A218

LER 81-028/03L-0:on 810703,during Control Room Panel Check, HPCI Pump Discharge Flow Indicating Controller FIC-2309 Found Indicating Low.Caused by Erroneous Indication of HPCI Flow Rate Due to Air Lock in HPCI Flow Indication Lines

ML20010A218
Person / Time
Site:	Duane Arnold
Issue date:	07/31/1981
From:	Schmich A IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20010A215	List: ML20010A214 ML20010A218
References
LER-81-028-03L, LER-81-28-3L, NUDOCS 8108110188
Download: ML20010A218 (1)

Text

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REPCAT CATE 40 EV ENT CESCRIPTICN ANC #RC8 AaLE CONSECUENCES h Ia!2i l Durina_ a control room Danel check HPCI Pump Discharae Flow Indicating Co I to!2i i ntroller FIC-2309 was found indicatina 500 GPM. The instrument scale is I lo ia l 10 to 4000 GPM. The reactor was in hot shutdown preparing to startup at t i

I o i s l I he time the oroblem was oiscovered. The H'CI system was declared inopera i I a i6 I l hip and a 94 hnur enld shutdown ! Co was entered. Technical Soecii ication 1 loi71l t c;_n liste HPCI system nnerability reauirements. There have been no Dre I i o i e i i vinus similar occurrences with FIC-2309. 80 I

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it i o I i An air lock in the HPCI flow indication lines caused FIC-2309 to give an  !

! !ii I peroneous indication of the HPCI system flow rate. These lines were vent  !

! !2l 1 ed to eliminate the air lock which restored normal instrument indication I i !: i i . When this work was comoleted the HPCI system was declared operable. No I it !4 I ! further corrective action is olanned. so

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