ML19317G010

From kanterella
Jump to navigation Jump to search
RO-76-01:on 760206,personnel Failed to Actuate Reactor Bldg Emergency Cooler from Manual Pushbutton.Caused by Unused Terminal Screw Vibrating Loose & Dropping Into Breaker Control Relay,Preventing Operation
ML19317G010
Person / Time
Site: Rancho Seco
Issue date: 03/05/1976
From: Colombo R, Eisenhuth F
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
References
NUDOCS 8002210709
Download: ML19317G010 (1)


Text

e UCENSEE EVENT REPORT.

CONTROL OLOCK:l l

l l

l l

(9LEADE PRINT ALL [EQUIRE] INFC~ MATION) 1 6

/

AME LCENSE NUMOER PE TYPE f l C l A l Rl Sl Sl 1l l 0 l 0 l-l 0l 0l 0l 0 l 0 l-l 0 l 0 l l4 l 1l 1l 1l 1l l0 l1l I

s T'O9 14 15 25 26 30 31 30 CATEGOHY Y

u DOCKET NUMBER EVENT DATE REA 'T DATE O 1 CON T l P l 0 l W lL l l 0 l 5 l 0l-l 0l 3l1 l2 l l 0 l 210] 6l 7l 6l l0 l 3 l 0 ' 5l 7l 6l 7 0 57 50 59 60 61 68 69 74 75 80 EVENT DESCRIPTION 35 l Dr. February 6 an attec:pt was made to actuate Reactor Building Emergency Cooler A-500D l 7 09 60 g l from the manual pushbutton. Trouble-shooting revealed a failure of Breaker 3B14 l

g 7 89 60 Eg l which supplies power to the cooler fan. The attempt to start the cooler was in l

7 89 80 32 l responce to a nonconforming report filed on another cooler.

(R0 76-1).

l 3

7 89 80

@l I

7 00 80 mg

'NE YCOE COMPONENT CODE SUPPULR M

R VOLATON M l Sl B l l El l Cl Kl TlB l R l K]

l Al lI l0 l0 l5 l lNl 7 89 10 11 12 17 43 44 47 48 CAUSE DESCAIPTION DE I An unused terminal screw vibrated loose, dropped into the breaker control relav.

l 7 89 63

-I 30 l wedced inside the mechanism, preventing operation.

l~

7 89 80 'I l

i FACRJTv METHOD OF STATUS 4 POWER OTHER STATUS DISCOVERY OtSCOVERY DESCRIPTON W

l0l 0l 0l l NA l [

l NA l

7 0 9

10 12 13 44 45 46 80 ACTMTV CONTENT RELEASED OF RELEASE l AMOUNT OF ACTMTV LOCATON OF RELEASE

/

y NA l

l NA l

IE W

7 8 9

10 11 44 45 80. i PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTON i

DE l0 l 0 l 0l ]

l NA l

7 89 11 12 13 80 C

PERSONNEL INJURIES NUMDER DESCRIPTON DE 101010l l

NA l

7 89 11 12 80 OFFSITE CONSEQUENCES l Minimal to none l

3 7 89 80 LOSS OR DAMAGE TO FACILITY j.

TYPE DESCRipTON

[

l NA l

1 7 89 10 80 PUBLICITY M l Sacramento Bee and Sacramento Union notified February 24, 1976 l

E 7 89 80

-l

_ ADDITIONAL FACTORS l

l

_3 80 a

l 8002 210 QC f 7 89 80

~.

NAME,R.W. Colombo /F.T. Eisenhuth PHONE:

GPO 881 667

.