ML19345F621

LER 81-001/03L-0:on 810112,while Performing Mod Work,Workman Accidentally Bumped Overspeed Trip Mechanism of Auxiliary Feedwater Pump,Tripping Valve & Making Pump Inoperable. Caused by Personnel Error.Valve Operator Reset

ML19345F621
Person / Time
Site:	Prairie Island
Issue date:	02/10/1981
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19345F617	List: ML19345F616 ML19345F621
References
LER-81-001-03L, LER-81-1-3L, NUDOCS 8102180621
Download: ML19345F621 (1)

Text

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LICEWSEE EVENT REPORT CONTROL BLOCC l 1

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!h (PLE ASE PR!NT OR TYPE ALL REQUIRED INFORMATIONI l l i c i..i l l M

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RE'ORTcA?g 7 0 6: 61 GO:aE7 NJVEEa EVENT DESCRIPTION ANO PROB ABLE CONSEOUENCES h i

, l o I: } l 'T.ile perfor=ing piping modification work in th area of No. 11 Auxilian a worhan accidentally bu=ced the overspeed trip rechanisn, trippine !

!ci3i 1 Feedwater Pt .p, The event was j Io64l 1 the valve and making the pu=p inoperable for about 12 =inutes.

Tech Spec l (c i3; i annunciated in the control room. Recent similar event was RO 80-26.

i lc is 3 t 3.4.A.2.b applies. No effect on public health or safetv. Redundant eeufement I

Ici:{ f was operable.

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OAUSE DES R1PTION AND COR AECTIVE ACTIONS The valve operator was reset. I l2 l c l l Personnel error.

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7 9 1 11 PERSONNEL ERPOSURES NUUSER TYPE DES 0al'T'oN NA l 1217110 10 lo l@l Z l@l **

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.c LoS$ of CR DAUAGE To FACILITY TvPE DESCR TION l

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I 2 l c 1 1 {N NA i@?ls':R,.1,os @ l , lIll lll1IQIl{ "5 8102'180 6M . . . ad PHONE:

612-388 1121 NAVE OF PREPARER