ML20087D150

Monthly Operating Repts for North Anna Power Stations Units 1 & 2 for Jul 1995

ML20087D150
Person / Time
Site:	North Anna
Issue date:	07/31/1995
From:	Bowling M, Stall J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
95-402, NUDOCS 9508100182
Download: ML20087D150 (13)

Text

-

VIHOINIA EI,ECTHIC AND POWElt COMI%NY Ricunoxo,V HOINIA 20061 August 7,1995 U. S. Nuclear Regulatory Commission Serial No.95-402 Attention: Document Control Desk NL&P/JHL/ CMC 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 t AND 2 MONTHLY OPERATING REPORT Enclosed is the July 1995 Monthly Operating Report for North Anna Power Station Units 1 and 2.

Very truly yours, y

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 i

d ann esoeiooie2 eso m PDR ADOCK 05000338

/1 5 R

PDR

l

~

1 l

i VIRGINIA POWER COMPANY NORTH ANNA POWER STATION

-MONTHLY OPERATING REPORT MONTH: -July YEAR:

1995 Approved:

D b lb.

~>

Station Manager F

. -.. ~.

~. _...,

.. ~

n *-

OPERATING DATA REPORT e

DOCKET NO.

50 338

\\

DATE: August 5, 1995 CONTACT: J. A. Statt PHONE: (703) 894 2101 OPERATING STATUS l

'I 1.

Unit Names................................ North Anna 1

. 2.

Reporting Period:......................... July 1995 3.

Licensed Thermet Power ( W t).............

2,893 4.

Namepl at e Rat ing (Gross We):.............

994 5.

Dtsign Electrical Rating (Net MWe).......

907 6.

Mulma Dependable Capacity (Gross We)..

940

7. ' Maalma Dependebte Capacity (Net We)....

893

.l l

8.

If changes occur in capacity Ratings (Items No. 3 thru 7) since last report, givo reasons:

Mulum Dependable Capacity ratings for both Gross and Net values revised following replacement of steam y'

generators.-

j.

9.

Power levet to which restricted, if any (Net We):,, _ N/A 10.~ Rsasons for restrictions, if any:

N/A i

This Month.

Y-t 0 Cumulative

11. Hours In Reporting Period.................................

744.0 5,087.0 149,963.0

12. Rumber of Hours Reactor was critical......................

744.0 5,065.6 113,513.4

13. Asactor Reserve Shutdown Hours............................

0.0 20.9 6,951.4

14. Hours Generator 0n Line...................................

744.0 5,060.8 110,514.5

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

0.0 0.0 0.0

.16. Gross Thermut Energy Generated (MWH)...................... 2,151,014.9 14,572,283.5 294,757,863.4 4

17. Gross E lect r ical Energy Generated (WH)...................

703,392.0 4,789,669.0 96,865,289.0 18.' Nat Electrical Energy Generated (WH).....................

668,234.0 4,555,692.0 91,757,978.0

19. Unit Service Factor.......................................

100.0%

99.5%

73.7%

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

100.0%

99.5%

73.7%

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

100.6%

99.6%

68.5%

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

99.0%.

98.7%

67.5%

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

0.0%

0.5%

9.6%

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 Startups,_N/A

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

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTR.lCITY COMMERCIAL OPERAfl0N

W

y _,.

l

~

,(

AVERAGE DAILY UNIT POWER LEVEL Docket No. :

50-338 Unit:

NA-1 Dates Auoust 5, 1995 I'

Contact:

J.

A.

Stall Phone,:

(703) 894-2101 MONTH: July 1995 DAY AVERAGE DAILY POWER DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

LEVEL (MWe-Ne t) -

1 886 17 898 2

905 18 898 3

905 19 897 4

905 20 896 5

904-21 895 6

904 22 897 7

903 23 897 8

904 24 896 9

901 25 896 10 901 26 896 11.

900 27 896 12

, 900 28 881 13 900 29 895 14 690 30 895 15 900 31 894 16 899 I

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.

r d

e Y'

T

i

. '.' i.

NORTH ANNA POWER STATION

. UNIT NO.: _1,_

MONTH:

July

SUMMARY

OF OPERATING EXPERIENCE Page 1 of 1 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

' July 01, 1995 0000 Began month with unit at 100% power, 938 MWe, July 28, 1995 0810 Commenced unit ramp-down from 100% power, 942 MWe for Turbine Valve Freedom Test.

0915 Unit stable at 90% power, 855 MWe.

4-1207 Commenced unit ramp-up from 90% power, 852 MWe following completion of Turbine Valve Freedom Test.

1352 Unit stable at 100% power, 942 MWe.

' July 31, 1995 2400 Ended month with unit at 100% power, 942 MWe.

i 4

i l

l i

l

a

m

.;p.

~ ' i..

1, 3

Page 1

of __j[

,9

.;.?

Y' UNIT SHUTDOWN AND POWER REDUCTIONS' Explanation Sheet Docket No.:

50-338 Report Month July Unit Name:

NA-1 Year 1995 Date: Auoust 5-1995

-l

Contact:

J. A.

Stall No entry this month.

e L

ti

D.'

UNIT SHUTDOWNS AND POWER REDUCTIONS ~

~

7 DOCKET NO.:-

50-338 UNIT NAME:

'NA-1' DATE: August 5, 1995-REPORT MONTH: July 1995 CONTACT: J. A.

Stall" PHONE: (703) 894-210'1 1

2.

3 4

5 No.

Date Type Duration Reason

Method of Licensee System Component Cause & Correctiv' (hrs)

Shutting Event Code Code Action to Down Reactor Report #

Prevent Recurrence o

Wo 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 N

i q

i OPERATING DATA REPORT DOCKET NO.:

50 339 DATE: August 5,1995 CONTACT:

J. A. Stall PHONE: (703) 894 2101 OPERATING STATUS 1.

Unit Names................................ North Anna 2 2.

Reporting Period:......................... July 1995 3.

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

2893 4.

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

9 79 5.

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

907 6.

raxinum Dependable Capacity (Gross MWe):..

944 7.

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

897 8.

If changes occur in Capacity Ratings (Items No. 3 thru 7) since test report, give reasons:

Maximus Dependable capacity ratings for both Gross and Net values revised following replacement of steam r

generators.

I

'9.

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

10. Reasons for restrictions, if any:

N/A This Month Y-t-D Cumulative

11. Hours lei Reporting Period.................................

744.0 5,087.0 128,231.0

12. Number o f H ours React or was Cri t ical......................

744.0 3,476.7 106,410.2

13. Reac t or Reserve Shutdown Hours............................

0.0 1.3 6,5?0.2

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

744.0 3,444.9 105,280.6

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

0.0 0.0 0.0

16. Cross Thersel Energy Genera t ed ( MWH ).................... 2,141,933.9 8,866,672.0 285,482,636.0

17. Gross E l ec t r i cal Energy Generat ed (MWH)...................

703,892.0 2,897,429.0 93,374,286.0

18. Ns t E l ec t ri cal E nergy Generat ed (MWH ).....................

668,762.0 2,743,226.0 89,283,194.0

19. Unit Service Factor.......................................

100.0%

67.7%

82.1%

20. Unit Avaltability Factor..................................

100.0%

67.7%

82.1%

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

100.2%

60.7%

77.4%

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

99.1%

59.5%

76.8%

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

0.0%

0.0%

5.0%

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

_N/A

23. If Shutdown at end of Report Period, estimated time of Startup N/A

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

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

p-

..e L

' AVERAGE DAILY' UNIT POWER LEVEL Docket No.:

50-339 Unit:

NA-2 Dates Aucust 5.

1995 Contacts.

J. A.

Stall Phone

-(703) 894-2101 MONTH: July 1995 DAY-AVERAGE DAILY POWER DAY AVERAGE DAILY POWER.

LEVEL (MWe-Net)

' LEVEL (MWe-Net) 1

.l 1

906 17 903 i

2 907 18 902 l

3 907 19 903 4

905 20 902 5

905 21 903 6

904 22

'903 i

7 839 23 903 j

8 818-24 902 l

9 906 25 902 10 906 26 902-11 906 27-902 a

i 12 906 28'

-902 13 905 29 902 14 904 30 902 15 904 31 901 16 904

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

Compute to thel nearest whole megawatt.

l

.c, NORTH ANNA POWER STATION UNIT NO.'s 2

L MONTHS 21111'

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.

r Date Time Data

- July 01, 1995 0000 Began month with unit stable at 100% power,.954 MWe.

July 07, 1995 0715 Commenced unit ramp-down from 100% power, 948 E:e for Turbine Valve Freedom Test and condenser waterbox maintenance.

0815 Unit stable at 90% power, 865 MWe.

0910 Turbine Valve Freedom Test completed satisfactory.

Began removing "B"

condenser waterbox from service.

July 08, 1995 0335 "B" waterbox returned to service after plugging one leaking tube.

Began removing "C" waterbox from service.

0430 Condenser vacuum began a slow decrease when

+

removing "C" waterbox from service.

0520 Unit stable.at 88.5% power, 836 MWe.

1700 "C"

waterbax repairs complete after plugging i

one leaking tube, 1804 "C" waterbox returned to service.

1813 Commenced power increase to 100% power.

1841 Holtiing power at 97% power, 917 Mwe for shift turr.over.

1922 Commenced power increase to 98%

for calorimetric calibration of nuclear instrumentation.

1930 Unit stable at 97.6% power, 925 MWe.

2025 Commenced power increase to 100% power after calorimetric calibration of nuclear instrumentation.

2052 Stopped ramp at 99.5% power, 94 0. MWe while investigating noise from generator bus duct cooling fan.

-.,4 1

• ~

S.UMMARY OF OPERATING EXPERIENCE Page 2 of 2 Date Time Data July 08, 1995 2304 Commenced unit ramp-up af ter investigating bus duct cooling fan.

July 09, 1995 0053 Unit stable at 100% power, 950 MWe, July 31, 1995 2400 Ended month with unit stable at 100% power, 950 Mwe.

l

-Lis

,4.+

Page-1 of ___1-4,9 f?)

UNIT Sh'1TDOWN AND POWER REDUCTIONS h]

R2:planation Sheet Docket No.:

50-339 Repcrt Month AQy Unit Name:

NA-2 Year:

1995 Date Aucust 5.

1995

Contact:

J. A.

Stall 1

No entry this month.

i i

s..

s

l 1

1

.]

l a

.j

-I l

e a

'l

}

l 1

?

?

.. f75 f

• a DOCKET'NO.: '50-339 UNIT NAME:

NA-2

~'-

DATE: August 5, 1995 REPORT MONTH: July 1995 CONTACT: J. A.

Stal'1 PHONE: (703) 894-2101' 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 No 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

-