ML19325F222
| ML19325F222 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 09/30/1989 |
| From: | Wietharn K NEBRASKA PUBLIC POWER DISTRICT |
| To: | |
| Shared Package | |
| ML19325F203 | List: |
| References | |
| NUDOCS 8911170067 | |
| Download: ML19325F222 (1) | |
Text
UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET N0.
050-0298 UNIT NAME Cooper Nuclear Station CORRECTED REPORT FOR DATE November 9, 1989 COMPLETED BY K. J. Wietharn REPORT MONTH September 1989 TELEPHONE (402) 825-3811 Nthod of Licensee use & G rrective 4
5
- EI "
"EEI"E vent ysta C aporent Action to 3
1 2
No.
Date Tyne (Hours)
Reason Down Reactor Report 4 Code Code Prevent Recurrence 8"J-08 890917 S
0 B
5 N/A N/A N/A Load reduction to repair a steam leak, perform MSIV closure testing and turbine testing, and backwash debris from the condenser. A control rod sequence exchange was performed.
82-09 890928 F
55.7 H
3 89-025 TC 1.S Reactor scram occurred due to a spurious actuation of the Turbine-Cenerator Digital Electro-hydraulic fluid reservoir low level trip circuit.
A detailed investigstion was undertaken to determine the root cause as a mechanical agitation due to abnormal unloader valve actuation.
CD Os 0 i> NQ 000
-O wo l
,>. O 1 F: Forced 2 Reason:
3 Nthod:
4 Exhibit C - Instructiona for
. St Scheduled A - Equipment Failure (Explain) 1 - Manual Preparation of Data Entry SM M[p B - Maintenance or Test 2 - Manual Scram Sheets for Licensee Event C - Refueling 3 - Automatic Scram Report (LER) File (NUREC-o161)
D - Regulatory Restriction 4 - Continued b4 E - Operator Training & License Examination 5 - Reduced load 5 Exhibit 1 - Same Source e
_' [
F - Administrative 6 - Other g
5
- ~
C - Operational Error (Explain) my (D Q.E H - other (Explain) a