ML19317G098

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AO-74-13:on 751226 & 27,daily Check of Voltage Across Three Zener Diodes to Assure Reliable Operation of Starting Circuits Not Completed.Caused by Absence of Personnel. Program Terminated on 750430.Units Tested Satisfactorily
ML19317G098
Person / Time
Site: Rancho Seco
Issue date: 06/03/1975
From: Colombo R
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19317G093 List:
References
NUDOCS 8002210787
Download: ML19317G098 (1)


Text

U; data Rep;rt LICENSEE EVENT REPORT rr vious geport D:ts 01-02-75 o

CONTROL OLOCK:l l

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ZABE PIINT C.LL RtLUIRET) INFORM *. TION)

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1 6'

'1'AM!'

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[m)lC l Al Rl Sl Sl1 l l0 l 0 l-l 0l 0l 0l0 l0 l-l 0 l 0 l l 4l 1l 1l 1l 1l l 9l 9l

'ud 9 14 15 25 26 30 31 32

"'7,7 [ Ea![

7 ooCxEr NuueEn EvtNT oats aEPonf cATE cAftcony 01 CONT l M l I l lL l l0 l 5 l 0 l-l 0 l 3l1 l2 l l1l 2 l 0 l 3l 7l 5l l0 l6 l0 l 2 l 7 l 5l 7 Y 57 50 59 60 61 68 69 74 75 60 EVENT DESCRIPTION DE I A0-74-13 required a daily check of the voltage across three zener diodes. As stated l..

7 89 80 EE I in the original report the test program was to continue until sufficient evidence was l.

7 89 80f7 Q l accumulated to assure reliable operation of the starting circuit.

During an internal l

7 89 u0 Q l audit by Q. A. personnel, no data was recorded on December 26 and 27 and from January l 7 89 60 -

gg l 16 to February 14, only six measurements were recorded.

Upon discovery, the data l-7 G9 60 pring E

00E COMPONENT CODE 5

A AC u A VOLATON BE lE l E_) d l ElN lG lIl NI El lL l lB l4 l8 l5 l lNl 7 89 10 '

11 12 17

, 43 44 47 48 CAUSE DESCRIPTION

//

O l Data was not recorded on December 26 and 27 hecause the technician was on vacatrion.

l.

7 89Spora 60 3E hm.dic measurements were recorded in January & February and terriinated af ter Feb-14, 1975 because the technician believed he had accumulated sufficent informarion).

7 89 The technician was informed that only an Engineer could 30' 3 lto show the system reliable.

terninate the nrneran and data accumulatinn was reinstated.

An Ennineer mde a decis-l, (ononApril30, 1975, that the programgp,ujd be terminated.

00 ;-

09 cF STATUS

% POWEA oTHER STATUS OtSCOVERY oISCoVERY DESCRsPTON lBl l0l9l2l l

NA l [

l Internal 0.A. audit l'

7 8 9

10 12 13 44 45 46 80 ACTATY CONTENT os dELEASE l AELEASEo AMOUNT OF ACTivtTY toCATON of AftEASE l_Z,,j NA l

l NA l

12 lZl

~

7 0 9

10 11 44 45 UO PERSONNtl EXPOSURES f4 UMBER TYPE DESCRWTON ia lalol01 12 l l

NA l_

7 09 11 12 13 80 PERSONNEL WJURIES NUM BE A DE SCR:PTON 35 lol0lnl 1

NA l.

? O9 11 12 60 OFFSITE CONSEQUENCES 3E l NA l.

7 89 80~-

LOSS OR OAMAGE TO FACILITY TYPE oESCA PT *0N Q lZl l NA lm 7 00 10 80 -

PUBLICITY 17 l None l

7 09 UO ADOITIONAL FACTORS l (Event Description continued) was recorded daily until the test program was terminated I 9 by the responsible Engineer on April 30, 1975, since the units were tested and 60 g operating satisfactorily.

l '-

7 89 60 Ronald W. Colombo NAME; PHONE:

^

8002210

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