ML19340F123

LER 80-111/03L-0:on 801211,steam Generator Feed Pump Suction Pressure Low Alarm Was Received.Caused by Control Rod Insertion.Rods Partially Borated Back Out of Core,Restoring Delta Flux to within Target Band

ML19340F123
Person / Time
Site:	Beaver Valley
Issue date:	01/09/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19340F122	List: ML19340F121 ML19340F123
References
LER-80-111-03L, LER-80-111-3L, NUDOCS 8101190470
Download: ML19340F123 (2)

Text

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le 75 REPCRT C ATE d3 EVENT DESCRIPTION AND PROBA8LE CONSECUENCES Ioj:JlAt 1123 hours0.013 days <br />0.312 hours <br />0.00186 weeks <br />4.273015e-4 months <br />. the Steam Generator Feed Pump Suction Pressure 1.cw alarm was received 4 10i3I1A power reduction from 44 nercent was becun at a r. ate of 1 nercent act minute.

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1 o 141 1 1115 b.m rs . au pressure returned to nor-a1. the never decre mo was stonned n 40 lois! l percent. Durine this transient, delta flux left the low side of the tarcet band forl .

10 is ) Itwo minutes. Power onoration continted in accord,nce with Techni 11 Sneri fic it ion l l

[TTTll3.2.1. The health and safety of the public was not iconardized since delta flux I

[aisi i staved well within its safety limits. SO 7 8 9 .

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_;i 22 COMPONENT ATT ACHU ENr N8 A C>A **IVE COUP.

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Je :S 3a 31 40 41 42 4J CAUSE CESCRIPTION AND CORRECTIVE ACTtCNS I

lt l o j J Control rod insertion caused the delta flux to leave the tareet hand durin? the li li) lpower decrease. To restore the delta flux within the band, the rods wero a,rt i,! ! - I

,,,7, l borated back out of the core. Folly inc '.his incident. a further refinement to the I l

i , 33, ltartet flux value was made on 12/30/80. The delt.a flux measured durine this

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.E OF *aEP ARER 8 3 Os 119O g

e u a i a Attachment To LER 80-111/03L Beaver Valley Power Station

• Duquesne Light Company Docket No. 50-334 No further information is available or needed to satisfy the reporting requirement.

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