ML18037A141

LER#78-040/03L-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

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: ML17053A281 ML18037A141
References
LER-78-040-03L, LER-78-40-3L, NUDOCS 7812140154
Download: ML18037A141 (4)

Text

REGULATOR" NFORMATION DISTRIBUTION EM (RIDS)

ACCESS I ON NBR: 7812140.1 54 DOC. DATE> 78/.1 2/08 NOTA RI ZED- NO DOCKET ¹ FACIL:50-220 NINE MILE POINT ¹1, NIAGARA MOHAWK POINTER CORP ~ 05000220 AUTH. NAME AUTHOR AFFILIATION J.UTRAS, R. NIAGARA MOHAWK Pf'lR RECIP.NAME 4I RECIPIENT AFFILIATION 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 COPIES RECIPIENT CO.P I ES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL ACTI.ON~ 05 BC Om//3 4 4 INTERNAL< . EG FILE 1 1 02 NRC PDR 1 1 0

14 HANAUER 16 EEB 18 PLANT .SYS BR 20 AD PLANT SYS l,l 2

1 1

1 2

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I 11 MIPC 15 NOVAK/CHECK 17 AD FOR ENGR 19 IBC SYS BR 21 AD SYS/PROJ 3

1 1

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I 22 REAC SAFT BR 1 1 23 ENGR BR ,1 1 24 "KREGR/COLLNS 1 1 25 PNR SYS BR, 1 26,VOLMR/HOUSTN 1 1 E JORDAN/IE 1 I EXTERNALS 03 LPDR 1 1 04 NSI C .1 1 27 ACRS .16 16 TOTAL NUMBER OF COPI ES REQUIRED-'TTR, 43 ENCL 43

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25 26 LICENSE TYPE I

JO 04~00 57 CAT 58 Coi"O'T QB p g p p p 2 Q7 1 1 1 3 7 8 QB QB 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO Durina stead state o eration Surveillance Te t I

~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 spring. Breaker would not have reclosed to restart um . 0 erabilit of

~O6 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 minimal safety implications.

7 8 80 SYSTEM CAUSE CAUSE COMP. VALVE

~OS 7 8 9 CODE 10 Qll CODE

~E 11 IO12 SUBCODE

~8 12 O13 SEQUENTIAL 13 CohIPONENT CODE 18 Q14

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SUBCODE 19 QI5 SUBCODE 20 gl6 REVISION 0'"

OCCURRENCE REPORT LER/RO ACTION . FUTURE 2

EVENT YEAR

~78 21 22 EFFECT

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23 SHUTOOWIV

~0A 24 REPORT NO.

0 26

~M 27 ATTACHMENT

~03 28 CODE 29 NPRD 4 TYPE

~L 30 '1 PRlhlE CohIP.

NO.

~0 32 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.

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7 8 9 80 FACILITY Q METHOD OF 7

6 8

STATUS 9

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~Q20 ~Q20 10 0

Ys POWER 9 1 12 13 OTHER STATUS NA 44 DISCOVERY

~BQ3I 45 46 Survei1 1 ance Testino DISCOVERY DESCRIPTION Q32 80 ACTIVITY CONTENT 6

RELEASED OF RELEASE

~Z Q33 ~ZQ34 NA AMOUNT OF ACTIVITYQS

. NA LOCATION OF RELEASE Q 7 8 9 10 11 44 45 80 PERSONIVEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

~00 0 Q31 Z Qss NA 7 8 9 11 12 13 80 PERSONNEL INJURIES 0 ~00 NUMBER 0 Q40 DESCRIPTION na Q

7 8 9 11 12 80 LOSS OF OR OAMAOE TO FACILITY TYPE Q42 OESCRIPTIOAI NA Q43 7812140154II 7 8 9 I0 80 PUBLICITY NRC USE ONLY ISSUED DESCRIPTION QB 7

0 8

L~J8 9 I0 N

68 69 80 S a

1 R. sutras 31 5 343 21 1 0 Xl 327 NAME OF PREPARER PHONE. 0

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