ML20078G038

Monthly Operating Repts for Oct 1994 for North Anna Power Station Units 1 & 2

ML20078G038
Person / Time
Site:	North Anna
Issue date:	10/31/1994
From:	Bowling M, Stall J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
94-649, NUDOCS 9411150469
Download: ML20078G038 (13)

Text

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VIHOINIA l'31.HCTit1C ANI) POWElt CObt!'ANY It ien>ioun, vinninu encoi November 7,1994 U. S. Nuclear Regulatory Commission Serial No.

94 649 Attention: Document Control Desk NL&P/GSS R0 Washington, D.C. 20555 Docket Nos.

50-338 50-339 License Nos. NPF-4 NPF-7 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1 AND 2 MONTHLY OPERATING REPORT Enclosed is the Monthly Operating Report for Nor1h Anna Power Station Units 1 and 2 for the month of October 1994.

Very truly yours, M. L. Bowling, Manager Nuclear Licensing and Programs Enclosure cc:

U.S. Nuclear Regulatory Commission Region ll 101 Marietta Street, NW Suite 2900 Atlanta, GA 30323 Mr. R. D. McWhorter NRC Senior Resident inspector North Anna Power Station l

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1 941115o469 941031 PDR ADOCK 05o00338

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VIRGINIA POWER COMPANY NORTH ANNA POWER STATION MONTHLY OPERATING REPORT l

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MONTH:

October YEAR:

1994 Approved:

Ok Station Manager I

s, OPERATING DATA REPORT DOCKET NO.:

50-338 DATE: November 5, 1994 CONTACT: J. A. Stall PHONE: (703) 894-2101 OPERATING STATUS 1.

Un i t N ame :............................... N o r t h A nna 1 2.

Reporting Period:........................ 0ctober 1994 3.

Licensed Thermal Power (MWt):.............

2,893 4.

Nomep'. ate Rat ing (Gross MWe):.............

994 5.

Design Electrical Rating (Net MWe):.......

907 6.

Maximum Dependable Capacity (Gross MWe):..

948 7.

Maximum Dependable Capacity (Net MWe):....

900 8.

If changes occur in Capacity Ratings (Items No. 3 thru 7) since last report, give reasons:_N/A 9.

Power level to which restricted, if any (Net MW?): _ N/A

10. Reasons for restrictions, if any:

N/A This Month Y t-D Cunulat ive

11. Hours in Reporting Period....

745.0 7,296.0 143,412.0

12. Number of Hours Reactor was critical...................

554.7 6,578.1 106,983.8

13. Reactor Reserve Shutdown Hours............

76.5 103.7 6,930.5

14. Hours Generator On Line......

525.5 6,548.8 103,989.7

15. Unit Reserve Shutdown Hours............................

0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH)...........

...... 1,368,684.1 17,500,117.8 275,952,354.2

17. Gross Electrical Energy Generated (MWH)..

448,973.0 5,763,168.0 90,678,525.0

18. Net Electrical Lnergy Generated (MWH).....

425,435.0 5,464,301.0 85,870,886.0

19. Unit Service Factor..

70.5%

89.8%

72.5%

20. Unit Availability Factor.....................

70.5%

89.8%

72.5%

21. Unit Capacity Factor (using MDC Net)..........

63.5%

83.2%

67.0%

22. Unit Capacity Factor (using DER Net)...

63.0%

82.6%

66.0%

23. Forced Outage Rate....

0.0%

0.0%

10.1%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each)_N/A

25. If Shutdown at end of Report Period, estimated time of Startup: _N/A

26. Units in Test Status (Prior to Comercial Operation):

Forecast Achieved l

INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION l

i

1 AVERAGE DAILY UNIT POWER LEVEL Docket No.:

50-338 Unit:

NA-1 Date:

November 5, 1994

Contact:

J. A.

Stall Phone:

(703) 894-2101 MONTH: October-1994 DAY AVERAGE DAILY POWER DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

LEVEL (MWe-Net) 1 0

17 907 2

0 18 914 3

0 19 905 4

0 20 841 5

0 21 822 6

0 22 832 7

0 23 910 8

0 24 910 9

0 25 914 10 168 26 883 11 226 27 909 12 496 28 914 13 696 29 914 14 893 30 914 15 904 31 912 16 907 l

Instructions:

On this format, list the average daily unit power level in MWe-Net for each day in the reporting month.

Compute to the nearest whole megawatt.

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Page 1

of 1

UNIT SHUTDOWN AND P3WER REDUCTIONS Explanation Sncet Docket No.:

50-338__

Report Month October Unit 'Jame:

NA-1 Year:

1994 Date: November 5, 1994

Contact:

J.

A.

Stall

1. 94-06 September 09, 1994 Main Generator taken of f-line at 0017 hours1.967593e-4 days <br />0.00472 hours <br />2.810847e-5 weeks <br />6.4685e-6 months <br /> for refueling outage.

Unit entered Mode 3 at 0025 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br />.

Unit entered Mode 4 at 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br />.

September 10, 1994 Unit entered Mode 5 at 0335 hours0.00388 days <br />0.0931 hours <br />5.539021e-4 weeks <br />1.274675e-4 months <br />.

September 14, 1994 Unit entered Mode 6 at 0042 hours4.861111e-4 days <br />0.0117 hours <br />6.944444e-5 weeks <br />1.5981e-5 months <br />.

September 18, 1994 Unit defueled at 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br />.

September 24, 1994 Unit entered Mode 6 at 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br />.

September 29, 1994 Unit entered Mode 5 at 1717 hours0.0199 days <br />0.477 hours <br />0.00284 weeks <br />6.533185e-4 months <br />.

October 05, 1994 Unit entered Mode 4 at 1656 hours0.0192 days <br />0.46 hours <br />0.00274 weeks <br />6.30108e-4 months <br />.

October 07, 1994 Unit entered Mode 3 at 2234 hours0.0259 days <br />0.621 hours <br />0.00369 weeks <br />8.50037e-4 months <br />.

October 08, 1994 Unit entered Mode 2 at 2124 hours0.0246 days <br />0.59 hours <br />0.00351 weeks <br />8.08182e-4 months <br />.

Reactor taken critical at 2221 hours0.0257 days <br />0.617 hours <br />0.00367 weeks <br />8.450905e-4 months <br />.

I October 10, 1994 Unit entered Mode 1 at 0258 hours0.00299 days <br />0.0717 hours <br />4.265873e-4 weeks <br />9.8169e-5 months <br />. Main Generator placed on-line at 0327 hours0.00378 days <br />0.0908 hours <br />5.406746e-4 weeks <br />1.244235e-4 months <br />.

October 14, 1994 Unit stable at 100% power, 948 MWe at 0621 hours0.00719 days <br />0.173 hours <br />0.00103 weeks <br />2.362905e-4 months <br />.

NORTH ANNA POWER STATION UNIT NO.:

1 MONTH:

October

SUMMARY

OF OPERATING EXPERIENCE Page 1 of 2 Listed below in chronological sequence is a

summary of operating experiences for this month which required load reductions or resulted in significant non-load related incidents.

Date Time Data October 01, 1994 0000 Began month with unit in Mode 5

after completion of the 1994 Refueling Outage.

October 05, 1994 1656 Unit entered Mode 4.

October 07, 1994 2234 Unit entered Mode 3.

October 08, 1994 2124 Unit entered Mode 2.

2221 Unit is critical.

October 10, 1994 0258 Unit entered Mode 1.

0327 Main Generator placed on-line.

0516 Unit stable at approximately 30% power for Chemistry hold.

October 11, 1994 1935 Unit released from Chemistry hold.

1948 Commenced unit ramp-up to 75% power.

2358 Suspended unit ramp-up and stabilized unit at 43.8%

power, 391 MWe due to high cation conductivity in all steam generators.

October 12, 1994 0757 Unit released from Chemistry hold.

Commenced unit ramp-up to 75% power.

1540 Unit stable at 75%

power on Delta-T Instrumentation. Calorimetric power at 74%, 680 MWe.

October 13, 1994 1154 Commenced unit ramp-up from 74% power, 680 MWe to 100%.

1715 Suspended unit ramp-up at 92.5% power, 836 MWe due to MFP recirculation valve problems.

2240 Re-commenced unit ramp-up following MFP recirculation valve flow switch repairs.

2350 Stabilized unit at 96% power, 885 MWe to evaluate alternate power indications.

NORTH INNA POWER STATION UNIT NO.:

1 MONTH:

October

SUMMARY

OF OPERATING EXI'ERIENCE Page 2 of 2 Listed below in chronological sequence is a summary of operating experiences for this month which required load reductions or resulted in significant non-load related incidents.

Date Time Data October 14, 1994 0202 Commenced unit ramp-up f rom 96% power, 8 8 5 MWe.

0250 Stabilized unit at 99% power, 918 MWe while performing calorimetric calibration of nuclear instrumentation.

0545 Commenced unit ramp-up to 100% power.

0621 Unit stable at 100% power, 948 MWe.

October 20, 1994 0332 Commenced unit ramp-down to remove waterboxes from service due to indications of tube leakage.

0435 Unit stable at 91% power, 880 MWe.

October 22, 1994 1932 Commenced unit ramp-up following condenser waterbox repairs.

2025 Stabilized power at 98%, 940 MWe to perform calorimetric calibration of nuclear instrumentation.

2055 Re-commenced unit ramp-up to 100% power.

2120 Unit stable at 100% power, 956 MWe.

October 26, 1994 0330 Commenced unit ramp-down to remove "C" waterbox from service.

Unit at 100% power, 959 MWe.

0429 Unit stable at 90% power, 870 MWe.

1000 Commenced unit ramp-up to maximize generated output with waterboxes removed from service.

Unit at 90% power, 870 MWe.

1208 Unit stable at 100% power, 951 MWe.

October 31, 1994 2400 Ended month with unit at 100% power, 955 MWe.

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UNIT SHUTDOWNS AND POWER REDUCTIONS DATE: November 3,1994 REPORT MONTH: October 1994 CONTACT:

J.

A.

Stall PHONE: (703) 894-21.01 1

2 3

4 5

No.

Date Type Duration Reason Method of Licensee System Component Cause & Corrective (hrs)

Shutting Event Code Code Action to Down Reactor Report #

Prevent Recurrence i

94-06 940909 S

219.5 C

1 N/A N/A N/A 1: Type 2: Reason 3: Method 4:

F= Forced A= Equipment Failure (explain) 1= Manual Exhibit F - Instructions S= Scheduled B= Maintenance or Test 2= Manual Scram for preparation of Data C= Refueling 3= Automatic Scram Entry Sheets for Licensee D= Regulatory Restriction 4= Continuations Event Report (LER) File E= Operator Training & License Examination 5= Load Reduction (NUREG-0161)

F= Administrative 9=Other G= Operational Error 5:

H=Other (explain)

Exhibit H - Same Source

OPERATING DATA REPORT DOCKET NO.:

50-339 DATE: November 5, 1994 CONTACT:

J. A. Stall PHONE: (703) 894-2101 OPERAT!NG STATUS 1.

Un i t N ame :..........................

.. North Anna 2 2.

Reporting Period:........................ 0ctober 1994 3.

Licensed Thermal Power (MWt):.............

2893 4.

Nameplate Rating (Gross MWe):.....

9'79 S.

Design Electrical Rating (Net MWe):....

907

)

6. -Maximum Dependable capacity (Gross MWe):..

935

)

7.

Maximum Dependable Capacity (Net MWe):....

887 a

8.

If changes occur in Capacity Ratings (Items No. 3 thru 7) since last report, give reasons _N/A i

9.

Power level to which restricted, if any (Net MWe): _ N/A

10. Reasons for restrictions, if.eny:

N/A This Month Y-t D Cunulative

11. Hours in Reporting Period..........

745.0 7,296.0 121,680.0

12. Number of Hours Reactor was Critical...................

745.0 7,095.9 101,469.5

13. Reactor Reserve Shutdown Hours.

0.0 95.7 6,506 9

14. Hours Generator On Line..

745.0 7,054.3 100,371.7

15. Unit Reserve Shutdown Hours..................

0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 2,154,763.8 20,157,124.7 272,382,782.4

17. Gross Electrical Energy Generated (MWH).........

696,297.0 6,511,000.0 89,106,476.0

18. Net Electrical Energy Generated (MWH).

661,959.0 6,186,216.0 85,235,917.0

19. Unit Service Factor..

100.0%

96.7%

82.5%

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20. Unit Availability Factor.......

100.0%

96.7%

82.5%

1

21. Unit capacity Factor (using MDC Not)......

100.2%

95.6%

77.8%

22. Unit capacity Factor (using DER Net)..........

98.0%

93.5%

77.2%

23. Forced Outage Rate.........

0.0%

3.3%

5.2%

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):_ Refueling / Steam Generator Replacement, 03/25/95, 105 days

25. If Shutdown at end of Report Period, estimated time of Startup:

N/A

26. Units in Test Status (Prior to Conunercial Operation):

)

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

AVERAGE DAILY UNIT POWER LEVEL Docket No.:

50-339 Unit:

NA-2 l

Date:

November 5, 1994

Contact:

J.

A.

Stall Phone:

(703) 894-2101 MONTH: October 1994 i

DAY AVERAGE DAILY POWER DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

LEVEL (MWe-Net) 1 883 17 891 2

883 18 893 3

883 19 894 4

883 20 893 5

884 21 890 6

884 22 891 7

883 23 891 8

884 24 891 9

886 25 891 10 884 26 891 11 889 27 891 12 889 28 890 13 890 29 889 14 891 30 890 1F 891 31 891 lb 891 Instructions:

On this format, list the average daily unit power level in MWe-Net for each day in the reporting month.

Compute to the nearest whole megawatt.

Page 1

of 1

UNIT SHUTDOWN AND POWER REDUCTIONS Explanation Sheet Docket No.:

50-339 Report Month October Unit Name:

NA-2 Year:

1994 Date: November 5, 1994

Contact:

J.

A.

Stall

• No entry this month, i

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NORTH ANNA POWER STATION UNIT NO.:

2 MONTH:

October

SUMMARY

OF OPERATING EXPERIENCE j

Page 1 of 1 i

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

Date Time Data October 01, 1994 0000 Began month with unit at 100% power, 930 MWe.

October 10, 1994 0912 Commenced unit ramp-down for TVFT.

0935 Unit stable at 91.0% power, 865 MWe for TVFT.

1055 TVFT completed satisfactorily.

Commenced unit ramp-up to 100% power.

1120 Unit stable at 100% power, 930 MWe.

October 31, 1994 2400 Ended month with unit at 100% power, 930 MWe.

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.:

50-339 UNIT NAME:

NA-2

'd DATE: November 3,'1994 REPORT MONTH: October 1994 CONTACT: J. A.

Stall PHONE: (703) 894-2iD1 1

2 3

4 5

No.

Date Type Duration Reason Method of Licensee System Component Cause & Corrective (hrs)

Shutting Event Code Code Action to Down Reactor Report #

Prevent Recurrence oNo entry this month.

1: Type 2: Reason 3: Method 4:

F= Forced A= Equipment Failure (explain) 1= Manual Exhibit F-Instructions S= Scheduled B= Maintenance or Test 2= Manual Scram for preparation of Data C= Refueling 3= Automatic Scram Entry Sheets for Licensee D= Regulatory Restriction 4= Continuations Event Report (LER) File E= Operator Training & License Examination 5= Load Reduction (NUREG-0161)

F= Administrative 9=Other G= Operational Error 5:

H=Other (explain)

Exhibit H - Same Source 1.

_