05000293/LER-1980-089-03, /03L-0:on 801117,torus Water Level Indicator Lr 5038 on Panel C903 in Control Room Began to Oscillate Irradically.Instrument Declared Inoperable.Caused by Failure of Forced Balanced Motor Boyancy Level Transmitter

/03L-0:on 801117,torus Water Level Indicator Lr 5038 on Panel C903 in Control Room Began to Oscillate Irradically.Instrument Declared Inoperable.Caused by Failure of Forced Balanced Motor Boyancy Level Transmitter

ML19345E158
Person / Time
Site:	Pilgrim
Issue date:	12/17/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19345E156	List: 05000293/LER-1980-089, Forwards LER 80-089/03L-0 05000293/LER-1980-089-03, /03L-0:on 801117,torus Water Level Indicator Lr 5038 on Panel C903 in Control Room Began to Oscillate Irradically.Instrument Declared Inoperable.Caused by Failure of Forced Balanced Motor Boyancy Level Transmitter
References
LER-80-089-03L, LER-80-89-3L, NUDOCS 8012230356
Download: ML19345E158 (1)

LER-1980-089, /03L-0:on 801117,torus Water Level Indicator Lr 5038 on Panel C903 in Control Room Began to Oscillate Irradically.Instrument Declared Inoperable.Caused by Failure of Forced Balanced Motor Boyancy Level Transmitter

Event date:
Report date:
2931980089R03 - NRC Website

text

NRC FOIM 366 U.S. NUCLEAR REGULATORY COMMISSt@M (7 771 LICENSEE EVENT REPORT O co aeo' 'oc : i i

i i

i i

io iP<E

11~1 oR 1v E << r.EeelRE= l~ oRMArto~>

[O TTl l MI Al P l P l S l 1lgl 0 l 0 l -l 0 l 0 l 0 l 0 l 0 l - l 0 l 0 l@l 4 l 1 l 1 l 1l 1 l@l l

l@

7 8 9 LICENSEE CODE 14 15 LICENSE NUMSER 25 26 LICENSE TYPE JG 57 CAT 68 CON *1 1011l 3[RCE l b hj0 l 5 l 0 l -l 0 l 2 l 9 l 3 l@l 1 l I l 1 l 7 l 810 l@l 112 l 1 l 7 l 810 l@

7 8

60 61 DOCKET NUMB ER 68 63 EVENT DATE 74 7S REPORT D ATE 80 EVENT DESCRIP110N AND PROBABLE CONSEQUENCES h 10l2l l On November 17, 1980 at approximate 1v 0430 hours0.00498 days <br />0.119 hours <br />7.109788e-4 weeks <br />1.63615e-4 months <br /> Torus Water Level Indicator LR 5038 l g l located on panel C903 in the Control Room began to oscillate irradically.

No actual l l0lA; l torus water level changes were being erperienced.

The instrument was declared in-l 10 I s i l operable. A priority

'A' maintenance request was immediately issued for repair of l

l0 is l l the instrument. The system was returned to service on December 8. 1980.

l l0 l7l l l

101811 I

• $'E CO$E S 8CiOE CouPONENT CODE SU8C OE S

E Q

lTlElh lElh W h lI lN lS lT lR lU lh {@ lZ lh 7

8 9

to 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION REPORT NO.

COOE TYPE NO.

l VENT YE AR l-l l0 l8 l9 l y

l0 l3 l lLl l-l l0 l LE RJRO E

h,ag 8 l0 l

_ 21 22 23 24 26 27 28 29 30 31 32 K N AC O ONP NT MET O HOURS S8 IT FOR 8.

SUPPLI R MANUFAC RER l A l@[Z_j@

lZl@

l Z l@

l0 l0 l0 l0 l [N_j@

lN l@

lN l@

l F l 1 l 8 l 0 l@,

33 34 Jb 36 3/

40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS li10llI&C personnel determined that the forced balanced motor, a comoonent of the suppressioh g l chamber, boyancy level transmitter, manufactured by Foxboro Corooration. had fM ied.

I The component was replaced in-kind, the instrument re-calibrated and returned to g

,,,,,gservice.

This is an isolated event.

l mi I

7 8 9 80 STA S

% POWER OTHER STATUS Dis O RY DISCOVERY DESCRIPTION N.A.

l

[,,A)@l [1_[5_] W@ l 11 0l 0l@l Ooerational Event l

A TIVITY CO TENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE N.A.

l l

N.A.

l y lZl@ J @l 7

8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUM8ER TYPE

DESCRIPTION

l0l0l0l@lZl@l N.A.

l 1 7 PERSONNEL iNau7iES oESCRiPriONh NuuSER y l0l0l0l@l N. A.

l 7

8 9 11 12 80 LOSS OF OR DAM AGE TO FACILITY TYPE

DESCRIPTION

y [Z_j@l N.A.

l 80 7

8 9 to ISSUE @oESCRiPTiON@

8912230 } g NRC USE ONLY

[

N.A.

l lllllllllllll}

2 0 7

8 9 10 68 69 80 *4 617-746-7900

{

NAME @F PR3PARRR<

PHON E: