ML20125D174

Monthly Operating Rept for Nov 1992 for Wolf Creek Generating Station

ML20125D174
Person / Time
Site:	Wolf Creek
Issue date:	11/30/1992
From:	Maynard O, Mike Williams WOLF CREEK NUCLEAR OPERATING CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
WO-92-0155, WO-92-155, NUDOCS 9212150039
Download: ML20125D174 (7)

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WOLF CREEK

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NUCLEAR OPERATING CORPORATION December 09, 1992 otto L Mar ard n

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WO 92-0155 U. S. Nuclear Regulatory Commission ATTNi Document Control Desk Mail Station F1-137 Washington, D. C. 20555

Subject:

Docket No. 50-482:

November, 1992 Monthly Operating Report Gentlemen:

Attached is the November, 1992 Monthly Operating Report for Wolf Creek Generating Station. This submittal is_being made in accordance with the requirements of Technical Specification 6.9.1.8.

Very truly yours, f

/ / c'l^C:

4, Otto L. Maynard Vice President Plant Operations OLM/jad Attachment cct A. T. Howell (NRC), w/a J. L. Milhoan (NRC), w/a G. A. Pick (NRC), v/a V. D. Reckley (NRC), v/a 92121SCO39 921130 PDR ADOCK 0500 2

20 Box 411/ Burlington, KS 66839 / Phone (316) 364-8831

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An Equa Opponunity Employer M FMCVET

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I Attachment to 80 93-015$

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WOLF CREEK NUCLEAR OPERATING CORPORATION VOLF CREEK GENERATING STATICN-MONTHLY OPERATING REPORT MONTH:

November YEAR:

1992 Docket No.:

$0-482 Facility Operating License No.: -NPF-42 Report No.

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Prepared by:

Herlin G. Williams 1

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a Attachment to NO 92-0155

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SUMMARY

The following report highlights the operating experience of Wolf Creek Generating Station for the month of November, 1992.

This report is being provided pursuant to Technical Specification 6.9.1.8.

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SUMMARY

OF OPERATING EXPERIENCE The unit operated at or tear 1002 power until November 10, 1992, at 1105 hours0.0128 days <br />0.307 hours <br />0.00183 weeks <br />4.204525e-4 months <br />, when a reactor trip occurred due to a ground fault at an off-site substation.

The fault was caused by contact between an overhead ground and the energized portion of a 138 kilovolt (kV) ring bus during clearance procedures for a 345/138 kV transformer at the substation. Non-nuclear utility personnel were performing the work at the substation.

The unit was in Mode 3. Hot Standby, following the trip, t

On November 11, 1992, at 0330 hours0.00382 days <br />0.0917 hours <br />5.456349e-4 weeks <br />1.25565e-4 months <br />, the unit entered Mode 2. Startup. Mode

3. Hot Standby, was reentered at 0436 hours0.00505 days <br />0.121 hours <br />7.208995e-4 weeks <br />1.65898e-4 months <br /> due to Digital Rod Position 4

Indication problems. At 1244 hours0.0144 days <br />0.346 hours <br />0.00206 weeks <br />4.73342e-4 months <br />, the unit entered Mode 2 following repairs to the Digital Rod Position Indication system. Mode 1, Power Operation, was entered at 1608 hours0.0186 days <br />0.447 hours <br />0.00266 weeks <br />6.11844e-4 months <br />.

On November 13, 1992, at 1310-hours, the unit was returned to 100 percent reactor power.

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MAJOR SAFETY RELATED MAINTENANCE ACTIVITIES No major safety related maintenance activities were performed _during the month of November.

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Wolf Creek Generating Station Monthly Operating Report November 1992 Page 1 of 5 H

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Attachment to VO 92-0155 OPERATING DATA REPORT DOCKET NO.

50-482 VOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 12-01-92 COMPLETED BY M. Villiams TELEPHONE 316-364-8811 OPERATING STATUS 1.

Reporting Period November. 1992 Gross Hours in Reporting Period:

720 2.

Currently Authorized Power Level (MWt): 3411 Max. Depend. Capacity (MWe-Net):_1131 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 694.3 6.868.4 50.558.5 6.

Reactor Reserve Shutdown Hours 0.0 0.0 339.8 7.

Hours Generator on Line 689.1 6.795.6 49.907.8 8.

Unit Reserve Shutdown Hours 0.0 0.0 0.0 9.

Gross Thermal Energy Generated (MWH) 2.296.524 22.900.416 162.994.007 10.

Gross Electrical Energy Generated (MWH) 799.841 7.990.595 56.704.101 11.

Net Electrical Energy Generated (MWH) 766.174 7.614.812 54.090.283 12.

Reactor Service Factor 96.4 85.4 79.6 13.

Reactor Availability Factor 96.4 85.4 80.2 14.

Unit Service Factor 95.7 84.5 78.6 15.

Unit Availability Factor 95.7 84.5 78.6 16.

Unit Capacity Factor (Using MDC) 94.1 84.0 L75.3 17.

Unit Capacity Factor (Using Design MWe) 91.0 81.2 72.8 18.

Unit Forced Outage Rate 4.3 15.5 6 ' 5'-

19.

Shutdowns Scheduled Over Next 6 Months (Type. Date, and Duration of each): Refueling Outage on March 4, 1993 for 65 days.

20.

If Shut Down at End of Report Period Estimated Date of Startup:-

N/A Wolf Creek Generating Station Monthly Operating Report November 1992 Page 2 of 5

Attaclk ut to WO 92-0155 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 12-01-92 COMPLETED BY_M. Williams TELEPHONE 316-364-8831 MONTH November. 1992 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe Net)

(MWe-Net) 1 1150 17 1142 2

1149 18 1145 3

1144 19 1147 4

1143 20 1147 5

1148 21 1147 6

1148 22 1146 7

1148 23 1143 8

1148 24 1145 9

1148 25 1145 10 504 26 1146 11 21 27 1147

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12 527 28 1149 13 1077 29 1149 i

14 1141 30 1149 i

15 1141 31 N/A l

16 1140 i

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I Wolf Creek Generating Station '

Monthly Operating Report i

November 1992 Page 3 of 5

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' Attachment to WO 92-0155 I

I UNIT SHUTDOWN AND POWER REDUCTIONS DOCKET NO.

50-482 I

WOLF CREEK GENERATING STATION f

WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 12-01-92 COMPLETED BY M.

Williams

' REPORT MONTH November. 1992 TELEPHONE 316-364-8831 TYPE; METHODS SHUTTING F:'PORCED DURATION REASON DOWN THE REACTOR CORRECTIVE ACTIONS /CODGENTS i

No Date S: SCHEDULED (HOURS)

(1)

OR REDUCING POWER (2) 3 921110-F 30.9 H

3 Grot'nd fault was initiated by contact between an I

overhead ground and the energized portion of a 138 kilovolt ring bus at an off-site substation by non-nuclear. utility technicians.

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L SUtStARY: The unit operated at cr near 100Z. power until November 10, 1992, when a reactor trip occurred. The unit was returned to 100Z power on February 13, 1992 and operated at or near 100Z power for the remainder of the month.

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REASON: A: EQUIPMTNT FAILURE (EXPLAIN)- E: OPERATOR TRAINING AND LICENSE EXAMINATION (2) METHOD:

1.

MANUAL B: MAINTENANCE OR TEST F: ADMINISTRATIVE 2.

MANUAL SCRAM C: REFUELING G: OPERATIONAL ERROR.(EXPLAIN) 3.

AUTOMATIC SCRAM D: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4.

CONTIh M

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REDUCED LOAD 9.

OTHER

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I Wolf Creek Generating Station Monthly Operating Report November 1992 Page 4 of 5

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Attaohment to WO 92-0155 I

VOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION UNIT NO. 1 MONTH November. 1992

SUMMARY

OF OPERATING 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 r

November-1, 1992 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> Unit at 1002 power.

November 10, 1992 1105 hours0.0128 days <br />0.307 hours <br />0.00183 weeks <br />4.204525e-4 months <br /> Reactor trip - Ground fault at an off-site substation results in generator trip / turbine trip.

November 11, 1992 0330 hours0.00382 days <br />0.0917 hours <br />5.456349e-4 weeks <br />1.25565e-4 months <br /> Entered Mode 2 Startup.

0436 hours0.00505 days <br />0.121 hours <br />7.208995e-4 weeks <br />1.65898e-4 months <br /> Reentered Mode 3, Hot Standby, due to Digital Rod Position Ind! cation problems.

1?.44 hours5.092593e-4 days <br />0.0122 hours <br />7.275132e-5 weeks <br />1.6742e-5 months <br /> Entered Mode 2.

1608 hours0.0186 days <br />0.447 hours <br />0.00266 weeks <br />6.11844e-4 months <br /> Entered Mode 1. Power Operation.

1757 hours0.0203 days <br />0.488 hours <br />0.00291 weeks <br />6.685385e-4 months <br /> Unit synchronized to the grid.

November 13, 1992 1310 hours0.0152 days <br />0.364 hours <br />0.00217 weeks <br />4.98455e-4 months <br /> Unit at 100% power.

November 30 1992 2400 hours0.0278 days <br />0.667 hours <br />0.00397 weeks <br />9.132e-4 months <br /> Unit at 100Z power.

Wolf Creek Generating Station Monthly Operating Report November 1992 j

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