ML19210A255

LER 77-011-01T:on 770519,engineered Safeguards Motor Control Center Tripped During Power Operation.Caused by Binding of a Phase Overload Device Tripping Stem.Preventive Maint Will Be Modified to Check for Tripping Stem Resetting

ML19210A255
Person / Time
Site:	Three Mile Island
Issue date:	06/02/1977
From:	Potts W METROPOLITAN EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19210A254	List: ML19210A253 ML19210A255
References
LER-77-011-01T, LER-77-11-1T, NUDOCS 7910250482
Download: ML19210A255 (1)

Text

.

'JCENSEE EVENT REPORT CONTAOL 8 LOCK:l l l l l l l (pLEASE PRINT ALL REQUIRED INFORMATION) 1 8 LCENSEE LCENSE EVENT NAME LCENSE NUMBEA TYPE TycE O1 1-I l-

I I l-1 I- I -l I i 1-l l 1 -1 I 7 89 14 15 25 28 30 31 32 CATEGCAY TYP G C OCCKET NL,MBE A EVENT DATE AEPCAT DATE 7 8 O 1 CON'T l 57 l

58 l l-l 59 l

80

[ l -l l-l_

61 l--l' E8 l-l-l 89 l ' l --

74 l

75

l. l .l l 80 l

EVENT DESCRIPTION gg -. .

l 7 89 80 7 89 80 M r .. -- . . -

l 7 89 80 HE I r . r- - - -

7 89 do HG I - '

I 7 89 F=aAE 80 SYSTEM CAUSE COMPCNENT CCMPONENT CODE CODE COMPONENT COCE SUPALKA MANUFM VOLA 70N nE I:1- Irl la l-I- l -l-l =i [gj .Is imi< l l~

7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION ll l . * :. -, -- - -

l 7 89 80

&l 7 89

- - . -- . ,l 80 UE l -e A _ [ r

->-e ,-c_ ~

l 7 89 '

80 FacoTy M6THC0 OF STATUS  % PCWEA OTHEA STATUS DISCOVEAv OlSCOVERY DESCAIPT:ON 1 ' ' - /' I /

7 8 9 10 12 13 44 45 48 80 FOAM OF ACTIVITY CCNTENT AELEASED OF AELEASE AMOUNT CF ACTMTV LOCATCN CF AELEASE H l=1 LEJ l - 1 I - -

I 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBEA TYPE DESCAiPTION DE l l lJ l dl - -

l 7 89 11 12 13 go PERSONNEL INJURIES NUMBE A DESCAlpTION ElI I I o l 7 89 11 12 eo OFFSITE CONSEQUENCES BE " - .

I 7 89 (;p  ;;,  ;;; 9 , a \ go LOSS OR DAMAGE TO FACILITY g ji

+

TYPE DESCA!PTON us u Q . '

2 3 [_j l l

7 89 10 80 PUBLl CITY 1 7 - s l

7 89 80 ADDITIONAL FACTORS Ml l l 7 89 80

, 50 g g S 7 89 go

~ ~'

~

NAME: PHONE:-

GPO 881 667