05000270/LER-1981-004-03, /03L-0:on 810304,motor Driven Emergency Feedwater Pump 2B Was Declared Inoperable Due to Arcing in Motor.Cause Unknown.Motor Was Disassembled & Failure Found in Coil Slot

From kanterella
(Redirected from ML20005A314)
Jump to navigation Jump to search
/03L-0:on 810304,motor Driven Emergency Feedwater Pump 2B Was Declared Inoperable Due to Arcing in Motor.Cause Unknown.Motor Was Disassembled & Failure Found in Coil Slot
ML20005A314
Person / Time
Site: Oconee Duke Energy icon.png
Issue date: 04/09/1981
From: Jackie Jones
DUKE POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20005A306 List:
References
LER-81-004-03L, LER-81-4-3L, NUDOCS 8106300182
Download: ML20005A314 (1)


LER-1981-004, /03L-0:on 810304,motor Driven Emergency Feedwater Pump 2B Was Declared Inoperable Due to Arcing in Motor.Cause Unknown.Motor Was Disassembled & Failure Found in Coil Slot
Event date:
Report date:
2701981004R03 - NRC Website

text

. (3 S/-

ammspoem ass u.s.muctaAm macutaroav comanacsom 1

UCENSEE EVENT REPORT EXHISIT A cournos, stocau I.

I l 1

I I l

wtaAss ensur on rves ALL macuiaso mecauAncea G lq l r' I sil El rl ? l@s.o f ol _l n l 0 l o f clo l-I O l O @=4 I I l 1 l1 11 l oc

. ca i.

w,.

e

=== rm e corr F

M i LQl0 ! 51 Of 01 Ol217 l 0 @l Ol 3 I 0141811 @l of 4l Ol C I 8 I Il@

s o

a m

.a e e evenr oars s.

is a.eca r oars se avsur osscairnom Ano PacSASL3 coM84QuGMCa3 h M lOnMarch4 1981, the "2B" MDEWP was declared inocerable due to arcing in the I i

~

l motor.

Both the "2A" MDEWP and the TDEWP were operable during this incident,f I thus providing the necessary flow to prevent loss of steam generator feedwater.;

gl Hence, the health and safety of the public were not compromised by this in-t EME I eident.

I o i I

[

t i

E-

  • $E M.

sSE*o.

225.

en caswrcaos

(,,H,j,lLj @ (,3,j @ Q @ lMIOf Tl 01RIXl @ Q @ W @

o S i.

i.

is is i.

=

M.I

'*E"S"

"*'m"'

"*E*'"'

@ g,.o h ar m a u

r g

I8I1l I-I I 01014 I I/l 1013i LLJ b

y n

a a

s.

a n

a a

u a

NN EE

.EO W

.eues @ 'U.'2r"rlf sc7w

    • E97 Y. en'",,'en tjJ@@J@

l n!@

lj !@

,l 0 l 0 l 0 l 01 gj@

I Yl@

I Ll@ lxI9I9i3@

causs osxnirnca Ano cenasenve Act:cres @

i o l The exact cause for the failure is not known.

Immediately after the motor g

g i flashed, the breaker was tagged out and investigation began. The motor was i

I disassembled, and the f ailure was found in the coil slot. A spare motor wha g

m I transferred to Oconee.

Power reduction began after 60 hours6.944444e-4 days <br />0.0167 hours <br />9.920635e-5 weeks <br />2.283e-5 months <br /> limit expired.

g s i #. i i The mornr was replaced, tested, and coupled to the pump.

The unit began 8, M agurning to 747. FP.

s.

n rrafue spowea ofwenstana (30,)

onsemsar osecowsav cuca.enos @

li t i l Lyj@ l o l 7-l 4!@l NA l' Q QlMonthly performance :est on MDEWP l

s h g, is is l t ie I [7,j @ [J,,,Q[, NA-o,.,n- @ l

_r,

.o l

NA l

    • ,,g g, a

III'II l0 l 0 l 0 k h c - o @

rm o

NA l

e ee idiu onemenoah mw.=en li la l l 0 l 0 l Ol@l NA

,naan an' {1lld ll l

  • b,-

fTislW@9,6fd-au~e l'UUK UK 31 ML l

NA l

@ b,"@"k,,no,,@

=ac usa em, [y,,,j l

NA

[

((tiifI:

l r: l e e i.

u..

Aa.s ce m arAa an 17 Jane" (704) 373-8197 r cas:

/010c soe \\W