ML20042G742
| ML20042G742 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 03/31/1990 |
| From: | Williams J GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20042G731 | List: |
| References | |
| NUDOCS 9005160031 | |
| Download: ML20042G742 (2) | |
Text
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i UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET No.
50-425 l
DATE:
APRIL 25, 1990**
l UNIT NAME:
VEGP UNIT 2 COMPLETED BY: J. C. WILLIAMS TELEPHONE:
(404) 826-4279
^
REPORT MONTH NARCH 90 i
R R.
5 E
E
-Y T
A T
LICENSEE S C-Y-
S H
EVENT T0 COMPONENT CAUSE & CORRECTIVE
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P DURATION 0
0 REPORT
~ED CODE ACTION TO NO.
DATE E
(HOURS)
N D
NUMBER ME (SUBC00E)
PREVENT RECURRENCE 90-2 03/20 F
45.2**
A 3
2-90-002 EL-87 SEE.BELOW t
I F: FORCED REASON:
METHOD: -
EVENTS REPORTED INVOLVE 5: SCHEDULED -A-EQUIPMENT FAILURE EXPLAIN) I - MANUAL A GREATER THAN 20%
B-MAINTENANCE OR TES' 2 - MANUAL SCRAM REDUCTION IN AVERAGE-C-REFUELING 3 - AUT0.. SCRAM DAILY POWER LEVEL FOR D-REGULATORY RESTRICTION 4 - CONTINUATIONS-
-THE PRECEDING 24 HOURS..
1 E-OPERATOR TRAINING & LICENSE LOAD REDUCTION F-ADMINISTRATIVE 9.OTHER (EXPLAIN)'
G-0PERATIONAL' ERROR (EXPLAIN)~
H-0THER (EXPLAIN) l EVENT 90-2
-CAUSE:
GENERATOR TRIP / TURBINE TRIP DIFFERENTIAL RELAY ACTUATION../ REACTOR TRIP CAUSED BY THE RELAY ACTUATED WHEN AN ELECTRICAL f
FAULT OCCURRED IN THE UNIT I LOW V0LTAGE SWITCHYARD.' INCORRECTLY SET CURRENT TRANFORMER TAPS CAUSED THE RELAY TO BE OVERLY SENSITIVE TO SYSTEM IMBALANCES.
I CORRECTIVE ACTION: THE CURRENT TRANSFORMER TAPS WERE RESET-IN ACCORDANCE WITH L
ORIG'INAL DESIGN. DETAILS WILL BE LOCATED-IN LER 2-90-002.
- -REVISION I TO V2-4 V2-4 00 Oo!kbOO g4
+
s ENCLOSURE 4 l
V0GTLE ELECTRIC GENERATING PLANT - UNIT 2 MONTHLY OPERATING REPORT FOR MARCH, 1990 TABLE OF CONTENTS l
UNIT SHUTDOWNS AND POWER REDUCTIONS Page V2-4.
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