ML20050A833

LER 82-004/03L-0:on 820226,maint Workman Accidentally Bumped Overspeed Trip Mechanism on Auxiliary Feedwater Pump, Tripping Valve & Making Pump Inoperable.Caused by Personnel Error.Valve Operator Reset

ML20050A833
Person / Time
Site:	Prairie Island
Issue date:	03/24/1982
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20050A827	List: ML20050A826 ML20050A833
References
LER-82-004-03L, LER-82-4-3L, NUDOCS 8204020312
Download: ML20050A833 (1)

Text

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61 711 LICENSEE EVENT REPORT i

CONTROL BLOCK: l l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 I

@ lM lN lP lIlN l 2l@l 010 l- 10 l0LICENSE 14 15 l 010 NUMBER l 0l -l010 l@l4 25 26 l1LICENSE l1 Il TYPE l 1 JOl@l$7 CAT l bd l@

7 8 9 LICENSEE CODE CON'T l 10lIl S$Ry Q] O l 5 l 0 l 0 l013 l0 l6 @l 68 01 69 21 2 l6 18 12 @l0I3 REPORT EVENT DATE 74 75 12 l DATE 4l8 1280l@ ,

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7 8 60 61 DOCK ET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h lo l2I l While performing maintenance work in the area of No. 22  ;

lo [3l l Auxiliary Feedwater Pump, a workman accidentally bumped the overspeed trip l l t

o 4 I mechanism, tripp_ing the valve and making the pump inoperable for about 9 minutes. l [

t o s 1 The event was annunciated in the control room. Recent similar event was RO 81-1. [

o 6 l Tech Spec 3.4.A.2.b. applies. No effect on public health and safety. Redundant l f

l l0 l7l l equipment was operable. l l l o lR I 1 I f SY STEM CAUSE CAUSE COMP. VALVE CODE CODE SUSCOOE COMPONENT CODE SU8 CODE SUBCODE i lol9l lC lH lh l Al@ y@ l V l Al L l V l 0 l P lh l J l@ J h 18 19 20

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7 8 9 to 11 12 13

,, dEQUENTI AL OCCURRENCE REPORT REVISION L EVENT YE AR REPORT NO. CODE TYPE N O. 1

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_ 21 22 l-l 23 l 010 l4 l 24 26 l/]

27 l0l3l 28 29

[L 30 J [-j 31 W

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< N ATO ON PL A T ET HOURS 22 SB IT FOR b B. SUPPLIE MAN F ACT1.,R E R [

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i 35 36 J1 40 41 42 43 44 47 ,

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h f,

I i 10 l l Personnel error. The valve operator was reset. l

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7 8 9 80 SA S  % POWER OTHER STATUS IS O RY DISCOVERY DESCRIPTION f NA l [

Ii I s 'I LE_J@ l' 1 l 0 l 0' l@l"

• l l* A l@l Control Room Annunciation l A HVITY CO TENT

" ELE ASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE -

[l R y @ l Zl @ l 10 NA 44 l l NA 45 80 l

7 $ 9 11 PERSONNEL EXPOSURES NUMBE H TYPE DESCRIP TION f l t l i j l 0 l 0 l 0 l@y@l NA l l PenSONNd%unS i NUMBE R OtSCniPnON@  !

i R NA l l 0- 10 l 0 l@l 80 i 7 tt 9 11 12 I

L OSS OF On DAMAGE TO F ACILITY TYPE DE SC HIP TION .

i 9 y @l NA l 80 l

7 8 9 10 }

PU8L ICi f Y O NRC USE ONLY , [

8204020312 820324 I IIIIIIIIIIIII:A '

PDR ADOCK 05000306 es 69 80 ;;

s PDR ad 612-388 1121 NAME OF PREPARER PHONE: {

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