ML20148L929
| ML20148L929 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 05/31/1997 |
| From: | Edwards M OMAHA PUBLIC POWER DISTRICT |
| To: | |
| Shared Package | |
| ML20148L919 | List: |
| References | |
| NUDOCS 9706190427 | |
| Download: ML20148L929 (3) | |
Text
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ATTACHMENT I I
OPERATING DATA REPORT i
DOCKET NO._50:285.
l UNIT NAME_ FORT _.CALHOUN_ STATION._
DATE_ JUNE _5 _1997 l
COMPLETED BYJL.LEDWARDS TELEPHONE _L402L53316929 i
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REPORT PERIOD: May 1997 l
1.
Design Electrical Rating (Mwe-Net):
478 l
2.
Maximum Dependable. Capacity (Mwe-Net): _ _47.8
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l OPERATING _ STATUS
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i THIS MONTH YR T0 DATE CUMULATIVE j
3.
Number of Hours Reactor was Critical:
47L6 3135.0 _
__163826.6___.
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4.
Number of Hours Generator was On-line:
422.0 3082.4__
._161950.2__
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Unit Reserve Shutdown Hours:
0.0 0.0 _
- 0. Q__
6.
Net Electrical Energy Generated (MWH):
365945 2
_1452275.1 _
6843839LL l
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i 9706190427 970613 PDR ADOCK 05000285 1
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PDR 1
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ATTACHMENT 11 DOCKET NO 50-285 UNIT SHUTDOWNS UNIT NAME Eartlalhoun_SL,
DATE June _5._199Z 4
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REPORT MONTH May_1997 COMPLETED BY M L_Edwarfis__
i TELEPHONE C402L533-6929_
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No;
.Date:
Type:
Duration' Reason LMethod ofi Cause & Corrective;
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2 F1 Forced
-(Hours);
.LSh'utting.
Action to..
S:-Scheduled-Down' Reactor i 1 Prevent Recurrence.
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1 970421 F
285.9 A
2 On April 21, 1997.-at 2023 hours0.0234 days <br />0.562 hours <br />0.00334 weeks <br />7.697515e-4 months <br /> with the plant operating at'100%
power, a section of the high pressure turbine fourth stage extraction steam line ruptured at a large radius elbow (sweep).
Operators in the control room manually tripped the reactor.
I Corrective actions included replacing the affected piping and inspecting and rrplacing additional piping. Long term corrective
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actions include completing the failure analysis of the affected pipe and upgrading the erosion / corrosion program. See LER 97-003 for
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additional details.
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970527 F
36.1 A
5 On May 27, 1997-. power was reduced to approximately 10% to allow the turbine to be taken out of service to repair a steam leak on the "D" Moisture Separator drain line. The drain line was repaired and the
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turbine was placed back online on May 29, 1997.
I (1)
(2)
Reason:
Method:
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A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip / Scram C-Refueling 3-Automatic Trip / Scram D-Regulatory Restriction 4-Continuation i
E-Operator Training / License Examination 5-Other (Explain)
F-Administrative G-Operational Error (Explain) l H-Other (Explain) l f
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ATTACHMENT II DOCKET NO. 50-285 __ __.. _
UNIT SHUTDOWNS UNIT NAME Eart_Calhoun St.
DATE June _5 1997 f _
REPORT MONTH May 1997 COMPLETED BY M_.L._ Edwards _
TELEPHONE (402L531-6929_
OPERATIONS
SUMMARY
Fort Calhoun Station (FCS) returned to power operations after completing necessary repairs resulting from the rupture of an extraction steam line supplying the #5 feedwater heaters from the high pressure turbine fourth stage.
On May 12. 1997 at 0524 hours0.00606 days <br />0.146 hours <br />8.664021e-4 weeks <br />1.99382e-4 months <br /> the reactor was taken critical. The generator was placed online at 2157 hours0.025 days <br />0.599 hours <br />0.00357 weeks <br />8.207385e-4 months <br />. Fort Calhoun Station reached 100% power on May 19. 1997.
l On May 27. 1997, power was reduced to approximately 10% to allow the turbine to be taken out of service to repair a steam leak on the "D" l
Moisture Separator drain line. The turbine was taken offline at 2112 hours0.0244 days <br />0.587 hours <br />0.00349 weeks <br />8.03616e-4 months <br /> on May 27. 1997. The drain line was repaired and the turbine was l
placed online at 0929 hours0.0108 days <br />0.258 hours <br />0.00154 weeks <br />3.534845e-4 months <br /> on May 29. 1997. Fort Calhoun Station reached 100% power at 1618 hours0.0187 days <br />0.449 hours <br />0.00268 weeks <br />6.15649e-4 months <br /> on May 31. 1997.
l During May 1997. no power operated relief valves (PORV) or primary system safety valve challenges or failures occurred.
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