ML19309A171
| ML19309A171 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 11/21/1977 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | |
| Shared Package | |
| ML19309A168 | List: |
| References | |
| NUDOCS 8003260882 | |
| Download: ML19309A171 (1) | |
Text
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'UCENSEE EVENT REPORT
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l (ptsass pnueT ALL neousten meronesATIDOW)
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I Cl Al RlS lS l1l l 0 l 0 l-l0 l0 l 0 l 0l 0 l-l 0 l 0l l4 l1 l1l1l1l l 0 l 1_l 7 89 14 15 25 26 30 31 32 CATEGORY PE a
DOCKET NUM8ER EVENT CATE REPORT CATE O CONT l M l Il l Ll lLl l 0 l 5 l 0l-l 0l 3l 1l 2 l l 1l 0l 1l 9l 7l 7l l1l1l1l 6l 7l7 l 7 8 57 58 59 60 61 68 69 74 75 80 EVENT CESCRIPTION gg lDuring the recent refueling outage, a preventive maintenance check was made at the l
7 89 80
.2 3E lunderpower and phase balance relays for the RCP's.
Two of the four phase balance l 3 7 89 80 35 lrelavs for RCP "C" were found out of calibration in a nonconservative direction. The l 7 89 80 -
. 7 nu e n r e., I n.4 n. I HE I <m..
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- 80
@9l(RO-77-14) l 7 89 80 m
CD DE COMPONENT CODE V101.AT10N 35 lI l A l y l RlE lL l Al Yl Xl J
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7 89 10 11 12 17 43 44 47 48 a)
CAUSE CESCRIPTION lThe relays are Wilmar Electronics, Inc., Model 21-172 (serial numbers 009, 01,1).
One l
7 8 9.
80 HE Irelay was replaced and the other recalibrated. An electrical maintenance procedure. l' 7 89 80 -
lwill be developed for calibration. -
l 4
FActJTY METHoO OF STATUS
% POWER QTHER STATUS OtSCOVERY OISCOVERY DESCAPTION (Hl l0l0l0l l NA l W l
NA l
1 7 8 9
10 12 13 44 45 46 80 ACTMTV CONTENT OF PELEASE l AELEASED AMOUNT OF ACTMTV LOCATICN OF RELEASE j
W NA l
[
!!A i
l W
1 7 8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCmPTION EE 1010101 Wl NA l
7 89 11 12 13 80 PERSONNEL INJURIES NUMBER CESCAPTION
][ l 0 l 0 l 0l l
NA l
7 89 11 12 80 OFFSITE CCNSEQUENCES
]E l Min %nm j
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to none.
7 89 80 LOSS OR CAMAGE TO FAC:UTY TvPE CEsCRWmON
.I
$ lJ,,j l
NA l
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7 89 10 80 PUBUCITY 36 l Local newspapers and wire services notified October 27, 1977.
l 7 89 80
.j ACCITIONAL FACTORS I'
l The chase balance relavs provide a backup to the under voltage relays as RCP pump l
18 89 60 l monitors in the RPS.
l 1
7 89 80 R. W. Colombo /F. T. Eisenhuth O
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NAME:
PHONE:
GPO 849 467 i
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