ML20148L878

Monthly Operating Rept for May 1997 for Wolf Creek Generating Station

ML20148L878
Person / Time
Site:	Wolf Creek
Issue date:	05/31/1997
From:	Boyer G WOLF CREEK NUCLEAR OPERATING CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CO-97-0047, CO-97-47, NUDOCS 9706190413
Download: ML20148L878 (7)

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Gary D. Boyer W@ NUCLEAR OPERATING Chief Adrninistrative Officer l

l June 13, 1997 CO 97-0047 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Station F1-137 Washington, D. C. 20555 i

Subject:

Docket No. 50-482: May, 1997, Monthly Operating Report j Gentlemen:

Attached to this letter is the May, 1997, 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. If you have questions regarding this report, please contact me at (316)364-8831, extension 4000, or Mr. Richard D. Flannigan at extension 4500.

Very truly yours, Gary D. Boyer OLM/jed Attachment I cc: W. D. Johnson (NRC), w/a -

E. W. Merschoff (NRC), w/e ' / >

J. F. Ringwald (NRC), w/a J. C. Stone (NRC), w/a lillllillillllillllllll!lll'IlIll'\\!\\\

l 100003 9706190413 970531 PDR ADOCK 05000482

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R PM PO. Box 411 i Burlington, KS 66839 / Phone: (316) 364 8831 An Equal Opportunity Ernployer M F.HC. VET

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At.tachmen*. to CO 97-0047 Page 1 of 6 WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION MONTHLY OPERATING REPORT MONTH

May YEAR: 1997 Docket No.: 50-482 i

Facility Operating License No.: NPF-42 i

Report No. 147 i

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l Attachment to CO 97-0047

SUMMARY

The following report highlights the operating experience of Wolf Creek Generating Station l for the month of May, 1997. This report is being provided pursuant to . Technical l Specification 6.9.1.8.

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SUMMARY

OF OPERATING EXPERIENCE

! The unit operated at or near-100% power, Mode 1, May 1, 1997, through 0359 on May 3,

! 1997, when the unit began to reduce power because of a tube leak in the Low Pressure l Feedwater Heater 2C. At 2309, May 3, 1997, power was stabilized at 65%. The tube l

was repaired, and at 0734, May 4, 1997, the unit commenced power increase. At 1328, May 4, 1937, the unit was stabilized at Mode 1, 100% power.

The unit continued at Mode 1, approximately 100% power, until 1417, May 20, 1997, when power reduction was commenced to repair a steam leak on valve AEFV 58C, third l stage extraction to feedwater heater 7B. At 1457, May 20, 1997, the Reactor was manually tripped. The unit was stabilized in Mode 3 to allow for repairs to the valve. At 1104, May 23, 1997, the unit entered Mode 2. At 1300, May 23, 1997, the Reactor achieved criticality. The unit continued power increase and entered Mr* 'l

! at 0233, May 24, 1997. At 0000, May 25, 1997, the main generator output br' ters were closed. At 1857, May 25, 1997, the unit reached Mode 1, 100% pow 1, and ,

continued operating at that power through May 31,'1997. i II. MAJOR SAFETY RELATED MAINTENANCE ACTIVITIES ,

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l I MAJOR NONSAFETY RELATED MAINTENANCE ACTIVITIES:

l Plugged tube on Low Pressure Heater 2C l

Replaced gasket on AEFV 58C, third stage extraction to feedwater heater 7B Replaced roll pins on AEHV 33, AFLV 58C, and AFLV 45 i i

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i Wolf Creek Generating Station Monthly Operating Report May, 1997 l

Page 2 of 6

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f Attachment to CO 97-0047

, OPERATING DATA REPORT DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 6-9-97 l TELEPHONE 316-364-8831 OPERATING STATUS

1. Reporting Period: May, 1997 Gross Hours in Reporting Period: 744

2. Currently Authorized Power Level (MWt): 3565 Max. Depend. Capacity (MWe-Net): 1163 Design Electrical Rating (MWe-Net): 1170

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

l 4. Reasons for Restriction (If Any) : N/A.

This Month Yr. to Date Cumulative

5. Number of pours Reactor was Critical 674.0 3,553.0 85,304.9

6. Reactor Reserve Shutdown Hours 0.0 0.0 339.8

7. Hours Generator on Line 639.0 3,518.0 84,377.9 i

L 8. Unit Reserve Shutdown Hours 0.0 0.0 00 l

9. Gross Thermal Energy Generated (MWh) 2,210,326 12,475,506 282,702,073 l

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10. Gross Electrical Energy Generated (MWh) 762,387 4,320,480 98,169,465 l

11. Net Electrical Energy Generated (MWh) 726,357 4,144,036 93,785,755 l

12. Reactor Service Factor 90.6% 98.1% 82.9%

1 I 13. Reactor Availability Factor 90.6% 98.1% 83.2%

14. Unit Service Yactor 85.9% 97.1% 82.0%

15. Unit Availability Factor 85.9% 97.1% 82.0%

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16. Unit Capacity Factor (Using MDC) 83.9% 98.4% 79.9%

17. Unit Capacity Factor (Using Design MWe) 83.4% 97.8% 77.9%

18. Unit Forced Outage Rate 14.1% 2.9% 4.5% I

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

Refuel Outage IX'is scheduled for September 20 through October 20, 1997.

20. If Shut Down at End of Report Period, Estimate Date of Startup: N/A i

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l Wolf Creek Generating Station

, Monthly Operating Report

! May, 1997.

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Attachment to CO 97-0047

. AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPORATION DATE 6-f-97 TELEPHONE 316-364-8831 MONTH May, 199' DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL fMWe-Net) (MWe-Net) 1 1i94 17 1184 2 1183 18 1183 3 985 19 1183

e. 981 20 717 5 1183 21 0 i

6 1183 22 0 7 1183 23 0 8 1183 24 0 9 1184 25 578 10 1184 26 1167 11 1184 27 1178 _ , , ,

12 1184 28 1180 13 1181 29 1179 14 1182 30 1180 _

15 1182 31 1180 16 1184 l

Wolf Creek Generating Station Monthly Operating Report May lis97 Pac;e 4 of 6 J

Attachment to WM 97-0074

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UNIT SHUTDOWN AND POWER REDUCTIONS DOCKET NO. 50-482 WOLF CREEK GENERATING STATION WOLF CREEK NUCLEAR OPERATING CORPdRATION DATE 6-9-97 TELEPP3NE 316-364-8831 Type METHOD OF SHUTTING F: FORCED DURATION REASON DOWN THE REACTOR CORRECTIVE ACTIONS / COMMENTS No Date S: SCHEDULED (Hours) (1) OR REDUCING POWER (2) 1 970503 F 0 A 5 Repair tube leak in Low Pressure Heater 2C 2 970520 F 105 A 5; 2 Repair valve AFFV58C on Feedwater Heater 7B SUM 4ARY: The unit operated at or near 100% power, Mode 1, May 1, 1997, thrcugh 0359 on May 3, 1997, when the unit began to reduce power because of a tube leak in the Low Pressure Feedwater Heater 2C. At 2309, May 3, 1997, power was stabilized at 65%. The tube was repaired, and at 0734, May 4, 1997, the unit commenced power increase. At 1328, May 4, 1997, the unit was stabilized  !

at Mode 1, 100% power. i The unit continued at Mode 1, approximately 100% power, until 1417, May 20, 1997, when power reduction was commenced to repair a steam leak on valve AEFV 58C, third stage extraction to feedwater heater 7B. At 1457, May 20, 1997, the Reactor was manually tripped. The unit was stabilized in Mode 3 to allow for repairs to the valve. At 1104, May 23, 1997, the unit entered Mode 2. At 1300, May 23, 1997, the Reactor achieved criticality. The unit continued power increase and entered Mode  ;

1 at 0233, May 24, 1997. At 0000, May 25, 1997, the main generator output breakers were closed. At 1857, May 25, 1997, the l unit reached Mode 1, 100% power, and continued operating at that power through May 31, 1997.  !

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1) REASON: A: EQUIPMENT 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 SCPAM D: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4. CONTINUED

5. REDUCED LOAD j

9. OTHER I t

Wolf Creek Generating Station Monthly Operating Report May, 1997 Page 5 of 6

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!' Attachment to W.9'-0074 l* ,

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l WOLF CREEK NUCLEAR OPERATING CORPORATION l WOLF CREEK GENERATING STATION l

UNIT NO. 1 l- i MONTH May, 1997  !

SUMMARY

OF OPERATING EXPERIENCE I

l 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, i

DATE TIME EVENT .

573797 1428 Reduced power to repair tube leak on Low Pressure Heater 2C l 5/20/97 1457 Reduced power and tripped reactor to repair steam leak on AEFV 058C i

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Wolf Creek Generating Station

, Monthly Operating Report May, 1997 Page 6 of 6 i

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