ML19317F976

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AO-75-14:on 750910,attempt to Place B Decay Heat Removal Sys Into Svc Resulted in B Cooler Outlet Valve Failing to Respond.Caused by Failure of Std Key Stock.Subsequent Testing Verified Valve Operability
ML19317F976
Person / Time
Site: Rancho Seco
Issue date: 09/25/1975
From: Colombo R, Eisenhuth F
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19317F841 List:
References
NUDOCS 8002210681
Download: ML19317F976 (1)


Text

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UCENSEE EVENT REPORT

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CONTROL DLOCK.

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(PLEASE PZINT ALL RE!UIRED INFO 1MATION) 1 6

's NAME LCENSE *duM0ER E

TY

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j lC l A l RlS lS l1 l l 0 l 0 l-l 0l 0l0 ps l0 l-l 0 [ 0 l l 4l 1l1l 1l 1l

[0 l1'l N'

O9 14 15 25 26 30 31 32 CATECORY T

COCKET NUMBER EVENT CATE REPORT CATE o 1 CON T l M l I l

@SlL l l0 l 5 l 0 l-l 0 l 3l 1l2 l

[ 0 l 9 l 1 l 0 l7 l5 l l0 [9 l2 l5 l 7 l 5[

7 8 57 58 69 60 61 68 69 74 75 60 EVENT DESCRIPTION

@ l On September 10, 1975, an attempt to place the "B" DHR Fystem into service resulted l

7 09 80 gg l in the "B" DHR cooler outlet valve failing to respond.

The "A" system was available lj 7 89 80 Q l and the "B" system was shut down and the valve repaired.

Subsequent testing verified-l 7 89 80 Eg l valve operability.

(AO-75-14) l _

7 89 DE I 80 --

I 7 89 DE C OE COMPONENT CODE R

VIOLATON o

l ClF l W l Vl AlL lV l 0 l Fl l Nl lL l2 l0 l0 l y

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7 89 10 11 12 17 43 44 47 48 CAUSE DESCR;PTION d

l A key in the motor operator shaf t of the DHR cooler outlet valve shnared, preve'n' ting l 0e 7 89 Q l motor from rotating valve stem.

Random material failure of standard key stock was l-'

ao

? 89 lprobablecause.

80 l.j FACUTY METHOO OF STATUS

% PoWFR OTHER STATUS OSCOVERY DGCOVERY OESCRPTON.

W l0l0l0l l NA l {

l NA l

7 8 9

10 12 13 44 45 46 80 REL FD 0

EASE AMOUNT OF ACTMTY Q

W yl NA

.l l

NA t'

LOCATON OF RELEASE l

7 8 9

10 11 44 45 PERSONNEL EXPOSURES ao -

NUMBER -

TYPE DESCA DTON Q l0 l 0l 0l Wl NA l

7 89 11 12 13 B0 PERSONNEL INJURIES NUMBER DESCR@ TION EE l0 l O l 0l l NA l

7 89 11 12 80 OFFSITE CONSEQUENCES M l NA l

7 09 LOSS OR DAMAGE TO FACILfiY TYPE DESCRIPTION Wl NA 4

1 l

7 89 10 PUBLICITY I

n l Sacramento Union and Sacraciento Bee notified 9/12/75 j

7 89 eo 3

ADDITIONAL FACTORS

( ] )9l Check with manufacturer showed this type failure is very rare and that key size was

/

j l correct.

8 0 02 210 N/

7 89 80 R. W. Colombo /F. T. Eisenhuth MO hm NAME:

pgggg GPO 883 867

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