ML20055F669

Monthly Operating Rept for June 1990 for Wolf Creek Generating Station

ML20055F669
Person / Time
Site:	Wolf Creek
Issue date:	06/30/1990
From:	Mike Williams WOLF CREEK NUCLEAR OPERATING CORP.
To:
Shared Package
ML20055F668	List: ML20055F667 ML20055F669 ML20055F673
References
NUDOCS 9007190002
Download: ML20055F669 (6)

Text

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> " . . Attachment 1: tono 90-0204' l .-, .

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NCIE CRllEK NUCLEAR OPl!RATDG 00RPGETICM N3E CRI!EK GENIBETDG SThTION lOlmLY OPERATDG Rl!PCRP KNal June YEAR: ,Ej.,Q Docket No.: 50-482 Facility Operating License No.: HPF-42 Report No. 1 Prepared by:

Herlin G. Williams 9007190002 900713 PDR ADOCK 05000482 g FDC

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.. . Attachment I to NO 90-0204 i

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! l SLMORY 1

'Ibe following report highlights the operating experience of Wolf Creek '

Generating Station for the m:mth of June,1990. 'Ihis report is being prwided pursuant to 'AK:hnical Specification 6.9.1.8.

F I. SCM GRY OF OPERATING EKPERIENCE

'Ihe unit operated at 100% power throughout the manth with the exception of -

reductions in power to approximately 95% starting on June 2,10, and 22.

'1hese powar reductions were to allow repair of minor water leaks on several low pressure feedwater heater manways. 'Ibe power reductions lasted approximately 29 hours3.356481e-4 days <br />0.00806 hours <br />4.794974e-5 weeks <br />1.10345e-5 months <br /> on June 2, 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> on June 10, and 19 hours2.199074e-4 days <br />0.00528 hours <br />3.141534e-5 weeks <br />7.2295e-6 months <br /> on June

22. .

On June 13 at 0859 hours0.00994 days <br />0.239 hours <br />0.00142 weeks <br />3.268495e-4 months <br />, a potential transformer on switchyard transfonner

1. 7 failed, resulting in a partial loss of offsite power. nna_w cy Diesel Generator "A" autmatically started and began supplying power to safety '

related loads on bus NB01, which is normally supplied by transformar #7 Snargency Diesel Generator "A" supplied power to NB01 loads until 1125 hours0.013 days <br />0.313 hours <br />0.00186 weeks <br />4.280625e-4 months <br />, when NB01 was switched to an alternate offsite power source. 'Ihe  ;

potential transformer was replaced and power to NB01 was transferred back to transformer #7 by 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br />. 'Ihis event is being reported to the NRC by Licensee Event Report (LER)90-014.

II. MMCR SAFETY RELATED MAINI'ENANCE ACTIVITIES '

No major safety related maintenance activities were perfonned during the ,

manth of June. ,

P Wolf Creek Generating Station Monthly Operating Report June 1990 Page 1 of 5

Attachment Into NO 90-0204 l

OPl!RATIN3 DATA REPCRT DOCIET NO. 50-482 i WLF CREEK GENI!RATDG STATI(N WLF CREEK NUCLEAR OPl! RATING 00RPCRATION DATE 07-01-90 COELETED BY M. Williams

'I1!LEP}KME 316-364-8831 CPimATIIG STMUS

1. Reporting Period: June, 1990 Gross Hours in Reporting Period 720

2. Currently Authorized Power Imel(MWt) _MM Max. Depend. Capacity ()Me-Net):,,lLti Design Electrical Rating ()Me-Net): 1170

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

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

'Ihis Month Yr. to Date O=lative

5. Nmber of Hours Reactor was Critical 720.0 2679.1 32,978.5 -

6. Reactor Reserve Shutdown Hours 0.0 0.0 339.8 r

7. Hours Generator on Idne 720.0 2619.7 32,406.8 s

8. Unit Raserve Shutdown Hours 0.0 0.0 0.0

9. Gross 'Ihermal Energy Generated (MNH) 2,442,569 8,598,600 107.075.855 l 10. Gross Electrical Energy Generated (MHH) 848,816 2,990.602 37.269,549

11. Net Electrical Energy Generated (MNH) 814,931 2,842,741 35,565.112

,12. Reactor Service Factor 100.0 61.7 78.0

13. Reactor Availability Factor 100.0 61.7 78.8

-14. Unit Service Factor 100.0 60.3 76.6

15. tinit Availability Factor 100.0 60.3 76.6

16. Unit Capacity Factor (Using MDC) 99.7 57.7 74.4

17. thit Capacity Factor (Using Design MWe) 96.7 55.9 71.9

18. Unit Forced Outage Rate 0.0 4.5 4.6 l 19. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): N/A

20. If Shut Down at End of Report Period, Estimated Date of Startup: N/A Wolf Creek Generating Station Monthly Operating Report ,

June 1990 Page 2 of 5

m Attachment I to NO 90-0204 t '

i AVERAGE IRILY INIT POWI!R LEVEL

, DOCIGT NO. 50-482 WOLF CREEK GENilRATDG S'RTIN  ?

WOLF GEEK NUCLEAR OEWATDG CXRPWATIN Dh2E 07-01-90 OCMPumllD BY M. Williams

'IELEPfEME 316-364-8831

)KNIH June. 1990 )

DhY AVIIRAGE IRILY POWER LEVEL DAY AVI! RAGE DhILY POWI!R LIMIL

( h Net) ( h Not) ,

'1 1141 17 1137 _

2 1078- 18 '1134 l 3 1134 19 1134 4 1145 20 1134 L

5 1144 21 1134

l. 6 1142 22 1124 7 1141 23 1102 L. 8- 1141 24 1137 l '

l

'9 1139 25 1136 10 1089 26 1134 11 1140 27 1132 12 1138 28 1131 -

13 1138 29 1131 14< 1138 30 1131 15 1139 31 N/A

, 16 . 1139 Wolf Creek GEmerating Station Monthly Operating Report June 1990 Page 3 of 5

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UNIT SHUTDOWN AND POWER REDUCTIONS DOCKET NO.- 50-482~

WOLF CREEK GENERATING STATION WOLF CR N NUCLEAR OPERATING CORPORATION e

DATE 07-0:.-90 E l COMPLETED BT M. W; .L .ams - 3

,f-REPORT MONTH June. 1990 TELEPHONE 316-34 4-1 431

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TYPE . METHODS SHUTTING F: FORCED DURATION REASON DOWN THE REACTOR CORRECTIVE ACTIONS /CONWITS $ .-

,- No Date S: SCHEDULED (HOURS) (1) OR REDUCING POWER (2) a l

o S.

ro R

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SWGIART: The unit operated at or near 100Z power throughout the month.

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1) REASON: A: EQUIPMENT FAILURE (EXPLAIN) E: OPERATOR TRAINING AND LICENSE EKAMINATION (2) METHOD: 1. MANUAL B: MAINTENANCE OR TEST F: ADMINISTRATIVE 2. MANUAL SCRAM C: REFUELING G: OPERATIONAL ERROR (EXPIAIN) 3. AUTOMATIC SCRAM D: REGULATORT RESTRICTION N: OTHER (EXPLAIN) 4. CONTINUED

5. REDUCED LOAD

9. OTHER Wolf Creek Generating Station Monthly Operating Report June 1990 Page 4 of 5

Attachment I to NO 90-0204 WOLF CREEK NtX2 EAR OPIRATIlG ONPCRATICE WOLF CREEK GENERATIIG STATICE tNIT NO. 1 MJNIH June, 1990 SGMARY OF OPERATI!G EXPERIENCE Listed below in chronological sequence is a summary of operating experiences for this nonth which required load reduction or resulted in significant non-load related incidents.

MTIE ZDRE EU2fE June 1, 1990 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> Unit at 98% power.

June 13, 1990 0859 hours0.00994 days <br />0.239 hours <br />0.00142 weeks <br />3.268495e-4 months <br /> Potential transfonner for #7 switchyard transfonner failed resulting in partial loss of offsite power.

1125 hours0.013 days <br />0.313 hours <br />0.00186 weeks <br />4.280625e-4 months <br /> Alternate offsite power source established.

1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br /> Nonnal offsite power restored.

June 30, 1990 2400 hours0.0278 days <br />0.667 hours <br />0.00397 weeks <br />9.132e-4 months <br /> Unit at 100% power.

Wolf Creek Generating Station

}bnthly Operating Report June 1990 Page 5 of 5