ML20237A434

Monthly Operating Repts for July 1998 for North Anna Power Station,Units 1 & 2

ML20237A434
Person / Time
Site:	North Anna
Issue date:	07/31/1998
From:	Matthews W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
98-466, NUDOCS 9808140057
Download: ML20237A434 (10)

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VINGINIA EI.ECTRIC AND PowEn COMPANY I i RicnwoNo,VINGINIA 20261 August 10,1998 i

United States Nuclear Regulatory Commission Serial No.98-466 Attention: Document Control Desk NAPS /JHL i

Washington, D. C. 20555 Docket Nos.

50-338 I

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

i VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNIT NOS.1 AND 2 MONTHLY OPERATING REPORT L

Enclosed is the July 1998 Monthly Operating Report for North Anna Power Station Units 1 and 2.

l Very truly yours, hgW W. R. Matthews Site Vice President i

Enclosure i

i Commitments made in this letter: None.

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l cc:

U. S. Nuclear Regulatory Commission M [j i l

Region 11 l

l Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85

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Atlanta, Georgia 30303 Mr. M. J. Morgan NRC Senior Resident inspector North Anna Power Station 9808140057 990731 PDR ADOCK 05000338 R

PDR e-_____________---__________________

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VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION MONTHLY OPERATING REPORT July 1998 I

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b Approved:

Site Vice President Date l

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OPERATING DATA REPORT Docket No.:

50-338 Date: 08/05/98

Contact:

W. R. Matthews Te!ephone: (540) 894-2101 1.

- Unit Name:

North Anna Unit 1 2.

Reporting Period.,.

July,1998

- 3.

Licensed Thermal Power (MWt):..

2893 4.

Nameplate Rating (Gross MWe):

979.74 5.

Design Electrical Rating (Net MWe):

907 6.

Maximum Dependable Capacity (Gross MWe):.

940 7.

Maximum Dependable Capacity (Net MWe):

893 8.

If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:

9.

Power Level To Which Restricted, if Any (Net MWe):

10.

Reasons For Restrictions, if Any:-

This Month Year-To-Date Cu,nulative r

11. Hours in Reporting Period 744.0 5,087.0 176,267.0

12. Hours Reactor Was Critical 744.0

- 5,087.0 138,342.0

13. Reactor Reserve Shutdown Hours 0.0 0.0 7,095.0

14. Hours Generator On-Line 686.0 5,029.0 135,196.4

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1,944,683.0 14,433,866.4 364,968,338.9 i

17, _ Gross Electrical Energy Generated (MWH) 627,788.0 4,707,195.0 -

156,877,848.0

18. Net Electrical Energy Generated (MWH) 596,103.0 4,476,507.0 113,620,690.0

19. Unit Service Factor 92.2 %

98 9%

76.7 %

20. Unit Availability Factor 92.2 %

98.9 %

76.7 %

21. Unit Capacity Factor (Using MDC Net) 89.7 %

98.5 %

72.1 %

22. Unit Capacity Factor (Using DER Net) 88.3 %

97.0 %

71.1 %

23. Unit Forced Outage Rate 7.8%

1.1%

8.0%

l 24 Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

Refueling, September 13,1998, 35 Days l

l 25.

If Shut Down at End of Report Period, Estimated Date of Start-up:

i 26.

Unit in Test Status (Prior to Commercial Operation):

FORECAST ACHIEVED INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

l AVERAGE DAILY UNIT POWER LEVEL Docket No.: 50-338 Unit Name: North Anna Unit 1 Date: 08/05/98

Contact:

W. R. Matthews Telephone: (540) 894-2101 MONTH:

July,1998 Average Daily Power Level Average Daily Power Level Day (MWe - Net)

Day (Mwe - Net) l 1

895 17 897 2

895 18 897 3

895 19 897 4

894 20 897 5

894 21 896 6

895 22 895 7

894 23 895 8

895 24 894 9

894 25 894 10 864 26 894 11 21 27.

895 12 0

28 894 13 128 29 893 14 558 30 892 15 896 31 892 16 888 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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Docket No.: 50-338 Unit Name: North Anna Unit 1 Date: 08/05/98

Contact:

W. R. Matthews Telephone: (540) 894-2101 NORTH ANNA POWER STATION UNIT NO.:J MONTH: July 1998

SUMMARY

OF OPERATING EXPERIENCE Page 1 of 1 Usted 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.

Qate Time i Dgtg July 01,1998 0000 Began month in Mode 1 at 100% power, 942 MWe.

July 10,1998 2028 Commenced unit rampdown from 100% power, 941 Mwe due to a generator hydrogen leak.

July 11,1998 0223 Main generator taken offline.

July 13,1998 1226 The hydrogen leak on the main generator was repaired.

Unit 1 was placed on-line.

1345 Holding power at 30% to perform Calorimetric.

I 1732 Calorimetric completed satisfactorily.

July 14,1908 1225 Commenced ramp to 90% power.

1258 Ramp stopped at 58% power due to upper and lower detector deviation alarms not clearing as expected. Will perform Quadrant Power Tilt Ratio (QPTR).

1315 QPTR completed satisfactorily. Commence ramp to 90% power.

1422 Stopped ramp at 69% power,627 MWe due to receiving computer tilt / rod deviation alarm. Will perform QPTR.

1437 QPTR completed satisfactorily. Commence ramp to l

90% power.

1700 Unit at 90% power,847 Mwe. Performing calorimetric.

1713 Calorimetric completed satisfactory. Commencing ramp to 100% power.

2125 Unit at 100% power, 942 Mwe.

July 31,1998 2400 Ended the month in Mode 1 100%, 942Mwe.

Docket No.: 50-338 Unit Name: North Anna Unit i Date: 08/05/98

Contact:

W. R. Matthews Telephone: (540)894-2101 UNIT SHUTDOWN AND POWER REDUCTION (EQUAL To om GREATER THAN 20%)

REPORT MONTH: July,1998 (1)

(2)

(3)

(4)

(5)

Method Duration of LER No.

. System Component Cause & Corrective Action Date Type Hours.

Reason Shutting Code Code to Prevent Recurrence Down Reactor 7-11-98 F

58 B

NA NA NA NA Removed turbine generator from the line to -

repair a hydrogen leak.

The reactor remained critical.

(1)

(2)

(3)

F: Forced REASON:

h*ETHOD:

S: Scheduled A-Equipment Failure (Explain) 1 Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Other (Explain) l E-Operator Training & Licensing Examination l

F-Administrative l.

G-Operational Error (Explain)

(4)

(5)

Exhibit G -instructions for Preparation of Data Entry Sheets Exhibit 1 - Same Source for Licensee Event Report (LER) File (NUREG 0161)

I OPERATING DATA REPORT Docket No.:

50-339 Date: 08/05/98

Contact:

W. R. Matthews Telephone: (540) 894-2101 1.

Unit Name:

North Anna Unit 2 2.

Reporting Period:.

July,1998 3.

Licensed Thermal Power (MWt):.

2893 4.

Nameplate Rating (Gross MWe):.

979 5.

Design Electrical Rating (Net MWe):

907-6.

Maximum Dependable Capacity (Gross MWe):..

944 7.

Maximum Dependable Capacity (Net MWe):.

897 8.

If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:

1 9.

Power Level To Which Restricted, if Any (Net MWe):

10.

Reasons For Restrictions, if Any:

This Month Year-To-Date Cumulative 11.

Hours in Reporting Period 744.0 5,087.0 14,535.0 12.

Hours Reactor Was Cntical 744.0 4,416.8 130,132.0 13.

Reactor Reserve Shutdown Hours.

0.0 40.9 7225.1 14.

Hours Generator On-Line 744.0 4,398.6 128,920.8 15.

Unit Reserve Shutdown Hours 0.0 0.0 0.0 16.

Gross Thermal Energy Generated (MWH) 2,151,714.7 12,381,412.9 353,174,592.9-17.

Gross Electrical Energy Generated (MWH) 696,211.0 4,027,528.0 115,530,042.0 18.

Net Electrical Energy Generated (MWH) 661,157.0 3,826,661.0 110,354,629.0 19.

Unit Service Factor 100.0 %

86.5 %

83.4%

20.

Unit Availabihty Factor 100.0 %

86.5 %

83.4%

21.

Unit Capacity Factor (Using MDC Net) 99.1 %

83.9 %

79.4 %

22.

Unit Capacity Factor (Using DER Net) 98.0%

82.9%

78.7 %

23.

Unit Forced Outage Rate 0.0%

0.0%

4.9%

i 24.

Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

None j

25. If Shut Down at End of Report Period, Estimated Date of Start-up:

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26. - Unit in Test Status (Prior to Commercial Operation):

FORECAST

__ __ ACHIEVED INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

AVERAGE DAILY UNIT POWER LEVEL Docket No.: 50-339 Unit Name: North Anna Unit 2 I

Date: 08/05/98

Contact:

W. R. Matthews Telephone: (540) 894-2101 MONTH:

July,1998 j

Average Daily Power Level Average Daily Power Level Day (MWe - Net)

Day (Mwe - Net) 1 892 17 888 2

892 18 889 3

895 19 888 4

891 20 888 5

891 21 888 6

891 22 888 f

7 891 23 888 8

891 24 888 9

891 25 888 10 890 26 889 11 886 27 889 12 885 28 888 13 886 29 888 14 897 30 887 15 888 31 886 16 896 INSTRUCTIONS I

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.

l Docket No.: 50-339 Unit Name: North Anna Unit 2 Date:

08/05/98 l

Contact:

W. R. Matthews Telephone: (540) 894-2101 NORTH ANNA POWER STATION

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UNIT NO.:_2 l

MONTH: July 1998 i

SUMMARY

OF OPERATING EXPERIENCE Page 1 of 1 Listed below in chronological sequence is a summary of operating experiences for the month which required load reductions or resulted in significant non-load related incidents.

Date Time Data July 1,1998 0000 Began the month in Mode 1,100% power,942 Mwe.

July 31,1998 2259 Commenced unit rampdown to approximately 870 Mwe to perform turbine valve freedom test (TVFT).

2338 Holding power at 92%, 872 Mwe for TVFT.

2400 Ended the month in Mode 1, 92% power, 872 Mwe.

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! O Docket No.: 50-339 Unit Name: North Anna Unit 2 Date: 08/05/98

Contact:

W. R. Matthews Telephone: (540) 894-2101 UNIT SHUTDOWN AND POWER REDUCTION (EQUAL To on GREATER THAN 20%)

REPORT MONTH: July,1998 (1)

(2)

(3),

(4)

(5)

Method Duration of LER No.

System Component Cause & Corrective Action Date.

Type Hours Reason Shutting Code Code to Prevent Recurrence Down Rx None during the repoi'ing period.

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i (1)

(2)

(3)

F-For:ed REASON:

METHOD-I S: Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Scram l

C-Refueling 3-Automatic Scram l.

D-Regulatory Restriction 4

Other (Explain)

E-Operator Training & Licensing Examination F-Administrative G-Operational Error (Explain)

(4).

(5)

Exhibit G -Instructions for Preparation of Data Entry Sheets Exhibit 1 - Same Source for Licensee Event Report (LER) File (NUREG 0161)

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