05000220/LER-1978-040-03, /03L-0 on 781113: 112 Core Spray Topping Pump Motor Breaker Closed Starting Pump But Breaker Closing Spring Motor Was Running Continuously & Not Charging Closing Spring.Caused by Misaligned Motor Assembly at Latching Pawl

/03L-0 on 781113: 112 Core Spray Topping Pump Motor Breaker Closed Starting Pump But Breaker Closing Spring Motor Was Running Continuously & Not Charging Closing Spring.Caused by Misaligned Motor Assembly at Latching Pawl

ML18037A141
Person / Time
Site:	Nine Mile Point
Issue date:	12/08/1978
From:	Jutras R NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17053A282	List: 05000220/LER-1978-040, Forwards LER 78-040/03L-0 05000220/LER-1978-040-03, /03L-0 on 781113: 112 Core Spray Topping Pump Motor Breaker Closed Starting Pump But Breaker Closing Spring Motor Was Running Continuously & Not Charging Closing Spring.Caused by Misaligned Motor Assembly at Latching Pawl ML17053A281 ML18037A141
References
LER-78-040-03L, LER-78-40-3L, NUDOCS 7812140154
Download: ML18037A141 (4)

LER-1978-040, /03L-0 on 781113: 112 Core Spray Topping Pump Motor Breaker Closed Starting Pump But Breaker Closing Spring Motor Was Running Continuously & Not Charging Closing Spring.Caused by Misaligned Motor Assembly at Latching Pawl

Event date:
Report date:
2201978040R03 - NRC Website

text

REGULATOR" NFORMATION DISTRIBUTION EM (RIDS)

ACCESS I ON NBR: 7812140.1 54 DOC. DATE> 78/.1 2/08 NOTA RI ZED-NO FACIL:50-220 NINE MILE POINT ¹1, NIAGARA MOHAWK POINTER CORP

~

AUTH. NAME AUTHOR AFFILIATION J.UTRAS, R.

NIAGARA MOHAWK Pf'lR RECIP.NAME RECIPIENT AFFILIATION 4I DOCKET ¹ 05000220 SUBJECTS LER¹78-040/03L-0 on 7811,13:¹112 core spray topping pump motor breaker closed starting pump but breaker closing spring motor,was running continuously 8, not charging closing spring. Caused by misaligned motor assembly at latchinq pawl.

DISTRIBUTION CODE: A002S COPIES RECEIVED'-LTR 1

ENCL 1

SIZE:

1+1 0

TITLE-'

NCI DENT REPORTS NOTES:

RECIPIENT ID CODE/NAME ACTI.ON~

05 BC Om//3 INTERNAL<

EG FILE 0

14 HANAUER 16 EEB 18 PLANT.SYS BR 20 AD PLANT SYS 22 REAC SAFT BR 24 "KREGR/COLLNS 26,VOLMR/HOUSTN EXTERNALS 03 LPDR 27 ACRS COPIES LTTR ENCL 4

4 1

1 2

2 1

Il,l 1

.1 1

I 1

1 1

1 1

1 1

1

.16 16 RECIPIENT ID CODE/NAME 02 NRC PDR 11 MIPC 15 NOVAK/CHECK 17 AD FOR ENGR 19 IBC SYS BR 21 AD SYS/PROJ 23 ENGR BR 25 PNR SYS BR, E JORDAN/IE 04 NSI C CO.P I ES LTTR ENCL 1

1 3

3 1

1 1

1 1

I 1

I

,1 1

1 1

I

.1 1

TOTAL NUMBER OF COPI ES REQUIRED-'TTR, 43 ENCL 43

I I

4 I

Ij l

4 7

ui ev

~ II

~

jj f f.;e~u

'I g

<<v IS~I

',)'fu ujl f 'I>>ru

~ r I

'l'Il j(I

I

"";'4

'f't

~ S,VV lu I

~I I~

'P

)'nj (,guj ji',

~

4 e

4

=:

I' 4

~ l j 4, f ~

I

~

ju

~

I

>>5 4

>>4 I

l v

(

'4 C

CWI f

jj I 4 v 4

I h

4 4

<<j 4

IW

CONTROL BLOCK:

I N

Y N

M P

7 8

9 LICENSEE CODE i

sl LICENSEE EVENT REPORT Qi (PLEAS 6

0 0

0 0

0 0

I 04~00 25 26 LICENSE TYPE JO 57 CAT 58 LICENSE NUMBER 14

\\5

<<I E PRINT OR TYPE ALLREQUIRED INFORMATIONI Coi"O'T 7

8 QB p

g p

p p

2 Q7 1

1 1

3 7

8 QB 60 61 DOCKET NUMBER 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO Durina stead state o eration Surveillance Te t I REPORT DATE QB

~O3 core spray'oppin pump motor breaker closed startina numD but breaker closing sprin motor was runnin continuousl and not charoin 1

i o

~OS

~O6 spring.

Breaker would not have reclosed to restart um 0 erabilit of the redundant s stem was demonstrated

'ust rior t h

'd tinued operated was ermitted b

Tech S ec 3.1.4.8.

This event has

~OB 7

8 minimal safety implications.

80

~OS SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE CohIPONENT CODE SUBCODE SUBCODE Qll

~E IO12

~8 O13 Q14 ~ QI5 ~ gl6 7

8 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LER/RO EVENT YEAR REPORT NO.

CODE TYPE NO.

0'"

2 ~78

~

~0A 0

~M

~03

~L

~0 21 22 23 24 26 27 28 29 30 '1 32 ACTION. FUTURE EFFECT SHUTOOWIV ATTACHMENT NPRD 4 PRlhlE CohIP.

CoiVIPONENT TAKEN ACTION ON PLANT METHOD HOURS ~22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

~EQIs ~ZQls

~ZQ20

~ZQ2 0

0 0

0 N

Q23

~YQ2

~NQ20 0

o 8

o Os 33 34 35 36 37 40 4'I 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

Motor assembl was sli htl misali ned at latchinq awl.

The motor assembly was properly alianed.

S stem was tested to verify operability.

7 8

9 FACILITY STATUS Ys POWER OTHER STATUS Q 6

f 0

9 1

NA

~ ~Q20 ~Q20 7

8 9

10 12 13 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQS 6

~Z Q33

~ZQ34 NA 7

8 9

10 11 44 PERSONIVEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

~00 0 Q31 Z

Qss NA 7

8 9

11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQ 0

~00 0

Q40 na 45

. NA LOCATIONOF RELEASE Q METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32

~BQ3I Survei1 1 ance Testino 45 46 80 80 80 80 7

8 7

8 0

7 8

9 11 12 LOSS OF OR OAMAOE TO FACILITYQ43 TYPE OESCRIPTIOAI Q42 NA 9

I0 PUBLICITY ISSUED DESCRIPTION QB L~J8 N

9 I0 NAME OF PREPARER 7812140154II R. sutras 80 NRC USE ONLY 80 a

1 68 69 80 S

PHONE.

31 5 343 21 1 0 Xl327 0

0 0