ML20065K005

Revised Pages for Monthly Operating Rept for Jan 1994 for Wolf Creek Generating Station

ML20065K005
Person / Time
Site:	Wolf Creek
Issue date:	01/31/1994
From:	Mike Williams WOLF CREEK NUCLEAR OPERATING CORP.
To:
Shared Package
ML20065J970	List: ML20065J969 ML20065J974 ML20065J989 ML20065K005 ML20065K018
References
NUDOCS 9404190100
Download: ML20065K005 (5)

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. + Attachment 2 to NA 94-0068

SUMMARY

The following report highlights the operating experience of Wolf Creek Generating Station for the month of Januarv. 1994. This report is being provided pursuant to Technical Specification 6.9.1.8.

I.

SUMMARY

OF OPERATING EXPERIENCE The unit operated near 100% power until January 14, 1994, when the reactor was shut down for repair of a containment cavity cooling fan. The unit returned to Mode'1, Power Operation, on January 17, 1994. On January 26, 1994, power reduction commenced due to a rod control urgent failure alarm, and at 30% power the reactor was tripped. At 0244 hours0.00282 days <br />0.0678 hours <br />4.034392e-4 weeks <br />9.2842e-5 months <br /> on January 27, 1994, a Notification of Unusual Event was declared and was terminated at 0423 hours0.0049 days <br />0.118 hours <br />6.994048e-4 weeks <br />1.609515e-4 months <br />. Rod Control repair was performed, but while returning the unit to service a subsequent rod control urgent failure alarm was received, and the unit was tripped from Mode 2 for replacement of a thyristor in the rod control system. The unit was returned to service on January 30, 1994.

II. MAJOR SAFETY RELATED MAINTENANCE ACTIVITIES No major safety related maintenance was performed during the month of January 1994.

Wolf Creek Generating Station Monthly Operating Report January 1994 Page 1 of 5 9 y04/ 7 0.L 0 6

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,Att$chment 2 to NA 96-0068

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OPERATING DATA REPORT' DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE O2-01-94 COMPLETED BY M. Williamn TELEPHONE 116-364-8831 OPERATING STATUS

1. Reporting Period: January, 1994 Gross Hours in Reporting Period: -744

2. Currently Authorized Power Level (MWt): 3565 Max. Depend. Capacity (MWe-Net). 1134 Design Electrical Rating (MWe-Net): 1170

3. Power Level to Which Restricted (If Any) (MWe-Net) : N/A

4. Reasons for Restriction (If Any) : N/A This Month Yr. to Date Cumulative.

5. Number of Hours Reactor was Critical 663.2 663.2 59025.6

6. Reactor Reserve Shutdown Hours 0.0 0.0 339.8

7. Hours Generator on Line 626.7 626.7 58,208.1

8. Unit Reserve Shutdown Hours 0.0 0.0 0.0

9. Gross. Thermal Energy Generated (MWH) 2,051,879 2,051,879 191,316,290

10. Gross Electrical Energy Generated (MWH) 708,139 708,139 66,561,688'

11. Het Electrical Energy Generated (MWH) 674,228 674,228 63,519,900

12. Reactor Service Factor 89.1 89.1 80.0 i

13. Reactor Availability Factor 89.1 89.1 80.5

14. Unit Service Factor 84.2 84.2 79.0

15. Unit Availability Factor 84.2 84.2 79.0 l I

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16. Unit Capacity Factor (Using MDC) 79.9 79.9 76.1  ;

17. Unit Capacity Factor (Using Design MWe) 77.5 77.5 73.6 1

18. Unit Forced Outage Rate 0.6 8.6 5.7

19. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each) : N/A.

20. If Shut Down at End of Report Period, Estimate Date of Startup: N/A j Wolf Creek Generating Station Monthly Operating Report January 1994 Page 2 of 5 l

. Attachment 2 to NA 94- .3 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE O2-01-94' COMPLETED BY M. Williams TELEPHONE 316-364-8831 MONTH January, 1994 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 1157 17 1 2 1156 10 703 3 1155 19 1137 4 1155 20 1138 5 1155 21 1140 6 1155 22 1097 7 1149 23 1142 8 1154 24 1144 9 1155 25 1145 10 1156 26 1045 11 1154 27 46 12 1155 28 0 13 1155 29 65 14 1117 30 1040 15 66 31 1144 16 0 Wolf Creek Generating Station Monthly Operating Report January 1994 Page 3 of.5

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Attachment 2 to NA 94-0068 UNIT SHITTDOWN AND POWER REDUCTIONS DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 02-01-94 COMPLETED BY M. Willimma TELEPHONE 316-364-8831 Type METHODS SHUTTING F: FORCED DURATION REASON DOWN THE REACTOR CORRECTIVE ACTIONS / COMMENTS No Date S: SCHEDULED (Hours) (1) OR REDUCING POWER (2) 1 940114 S 58.1 A 1 Repair of Containment Cavity Cooling Fan 2 940127 F 59.2 A 2 Repair of Rod Control System

SUMMARY

The unit operated near 100% power until January 14, 1994, when the reactor was shut down for repair of a containment cavity cooling fan. The unit returned to Mode 1, Power Operation, on January 17, 1994. On January 26, 1994, power reduction commenced due to a rod control urgent failure alarm, and at 30% power the reactor was tripped.

Rod Control repair was performed, but while returning the unit to service a subsequent rod control urgent failure alarm was received, and the unit was tripped from Mode 2 for replacement of a thyristor in the rod control system. The unit was returned to service on January 30, 1994.

1) REASON: A: EQUIPMENT FAILURE (EXPLAIN) E: OPERATOR TRAINING AND LICENSE EXAMINATION (2) METHOD: 1. MANUAL B: MAINTENANCE OR TEST F: ADMINISTRATIVE 2. M5NUAL SCPJu1 C: REFUELING G: OPERATIONAL ERROR (EXPLAIN) 3. AUTOMATIC SCRAM l D: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4. CONTINUED

5. REDUCED LOAD

9. OTHER Wolf Creek Generating Station Monthly Operating Report I. January 1994 Page 4 of 5 l .

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[:, Attachment 2 to NA 94-0060 1

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION UNIT NO. 1 MONTH January, 1994

SUMMARY

OF CPERATING EXPERIENCE Listed below in chronological sequence is a summary of operating experiences ' for this month which required load reduction or resulted in significant non-load related incidents' .

DATE TIME EVENT January 1, 1994 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> Unit near 100% power.

January 14, 1994 1945 hours0.0225 days <br />0.54 hours <br />0.00322 weeks <br />7.400725e-4 months <br /> Commenced Power Reduction for Containment Cavity Cooling Fan Repair 2334 hours0.027 days <br />0.648 hours <br />0.00386 weeks <br />8.88087e-4 months <br /> Unit at 50% power. .;

Jar.uary 15, 1994 1049 hours0.0121 days <br />0.291 hours <br />0.00173 weeks <br />3.991445e-4 months <br /> Unit entered Mode 2, startup.

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I 1251 hours0.0145 days <br />0.348 hours <br />0.00207 weeks <br />4.760055e-4 months <br /> Unit entered Mode _3, hot standby. l I

January 17, 1994 1007 hours0.0117 days <br />0.28 hours <br />0.00167 weeks <br />3.831635e-4 months <br /> Unit entered Mode 2, startup.

1617 hours0.0187 days <br />0.449 hours <br />0.00267 weeks <br />6.152685e-4 months <br /> Unit entered Mode 1,. power operation.

January 18, 1994 2336 hours0.027 days <br />0.649 hours <br />0.00386 weeks <br />8.88848e-4 months <br /> Unit near 100% power. .j 1

January 26, 1994 1633 hours0.0189 days <br />0.454 hours <br />0.0027 weeks <br />6.213565e-4 months <br /> Commenced Power Reduction due ' to Rod . Control Urgent Failure Alarm. l January 27, 1994 0423 hours0.0049 days <br />0.118 hours <br />6.994048e-4 weeks <br />1.609515e-4 months <br /> Reactor Manually Tripped, Unit entered Mode 3, hot standby.

January 28, 1994 0135 hours0.00156 days <br />0.0375 hours <br />2.232143e-4 weeks <br />5.13675e-5 months <br /> Unit entered Mode 2, startup.

1733 hours0.0201 days <br />0.481 hours <br />0.00287 weeks <br />6.594065e-4 months <br /> Unit entered Mode 3, hot standby, for rod control repair.

January 29,'1994 0532 hours0.00616 days <br />0.148 hours <br />8.796296e-4 weeks <br />2.02426e-4 months <br /> Unit entered Mode 2, startup.

1321 hours0.0153 days <br />0.367 hours <br />0.00218 weeks <br />5.026405e-4 months <br /> Unit entered Mode 1, power operation'.

January 30,-1994 2400 hours0.0278 days <br />0.667 hours <br />0.00397 weeks <br />9.132e-4 months <br /> Unit near 100% power.

Wolf Creek Generating Station Monthly Operating Report.

January 1994 Page 5 of 5 p.