ML20084U719

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Monthly Operating Repts for Mar 1991 for North Anna Power Station Units 1 & 2
ML20084U719
Person / Time
Site: North Anna  Dominion icon.png
Issue date: 03/31/1991
From: Mladen C, Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
91-214, NUDOCS 9104220264
Download: ML20084U719 (12)
v • d • e


Text

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1 I YlltOINIA ISLl:CTitlO AND l'OWillt COhll'ANY lt teituoxii,Viuoixir utiu oi April 15, 1991 U. S. Nuclear Regulatory Commission Serial No. 91 214 Attention: Document Control Desk NL&P/JMJ:Jm)

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 OPER ATING R.EPORT Enclosed is the Monthly Operating Report for North Anna Power Station Units 1 and 2 for the month of March 1991.

Very truly)yours,

\M: .?

~. .

C$d))n W. L. Stewart 1

i Senior Vice President - Nuclear Enclosures ec: U.S. Nuclear Regulatory Commission 101 Marietta Street, NW Suite 2900 Atlanta, GA 30323 Mr. M. S. Lesser NRC Senior Resident inspector North Anna Power Station o

910422O264 910331 /

DR ADOCK0500g,8

VIRGINIA POWER COMPANY NORTH ANNA POWER STATION MONTHLY OPERATING REPORT MONTH: March YEARt 1991 Approved:

I i

S atiion Manager i

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OPERAllNG DATA REPORT DOCKET NO.: 50 338 DATE: April 1,1991 COMPLETED Bf C. Mladen PHONE: (703) 894 2537 OPERATING STATUS

1. Unit Names................................ North Anna 1
2. R epor t i ng Per i od s . . . . . . . . . . . . . . . . . . . . . . . . . Ma rch 1991
3. Licensed Thermal Power (MWt) ............. 2,893 4 Nameplate Rat ing (Gross MWe): . . . . . . . . . . . . . 947
5. Design Electrical Rating (Net MWe):. . . . . .. 907
6. Maximum Dependable capacity (Gross MWe):.. 959
7. Maximum Dependable Capacity (Net MWe) . . . . 911
8. If char.ges occur in Capacity Ratings (ltens ho. 3 thru 7) since last report, give reasons:

N/A

9. Power level to which restricted, if any (Net MWe): ___N/A
10. Reasons for restrictions, if any: N/A This Month YtD Cumulative
11. H our s i n R epor t i ng Pe r i od. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 744.0 2,160.0 111,972.0
12. N umber of Hours R eac t or was Cri t i c al . . . . . . . . . . . . . . . . . . . . . 5 77.7 842.6 80,833.5
13. Reac t or R eserve shut down Hours. . . . . . . . . . . . . . . . . . . . . . . . . . . 17.1 21.6 6,625.2
14. Hours Generator 0n Line.................................. 547.0 R11.9 78,031.9
15. Unit Reserve shutdown Hours.............................. 0.0 0.0 0.0
16. Gross Thermal Energy Generat ed (MWH) . . . . . . . . . . . . . . . . . . . . . 1,395,520.6 1,725,616.3 206,711,852.3
17. Gross Elect rical Energy Generated (MWH ) . . . . . . . . . . . . . . . . . . 461,610.0 567,784.0 67,909,122.0
18. Net E l ect rical Energy Generated (MWH ) . . . . . . . . . . . . . . . . . . . . 437,541.0 533,915.0 64,262.667.0
19. Unit service Factor...................................... 73.5 % 37.6% 69.7%
20. Unit Avaltability Factor................................. 73.5 % 37.6% 69.7%
21. Unit capacity f actor (using MDC Net)... ................. 64.6% 27.1% 64.1%
22. Uni t capaci ty F actor (using DER Net ) . . . . . . . . . . . . . . . . . . . . . 64.8% 27.3% 63.3%
23. Forced Outage Rate.... ............................ .. .. 0.0 0.0% 12.4%
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each): th3rM3
25. If $hutdown at end of Report Period, estimated time of Startup: II!II
26. Units in Test Status (Prior to Commercial Operation):

Forecast Achieved  !

lNITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERAT!DN

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'l AVERAGE DAILY UNIT-POWER LEVEL Docket No.: 50-338' Unit NA-1 Dates April 1. 1991 Completed byt_ C. Mladen Phones (703) 894-2537 1

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-l MONTH: ; March-1991 l i

LDAY AVERAGE DAILY POWER DAY AVERAGE DAILY LEVEL LEVEL-(NWe-Net) LEVEL-(NWe-Net) . ,

, 1- 0 17 909 2 0 18 907 --

-3 0 19 908 4

'0 _ 20 908 5 0 21 908 O' 22 -909-

'7 0 23 911 8' O 24 -910 9 118 25- 912 10 -184 26 913

.11-282- 27- 909 112 531 28 911

'13- 798 29 912-114 - 860 30 910 15 902- 31 911 16 908 s

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.

UNIT SHUTDOWNS AND POWER REDUCTIONS .

4

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5 DOCKET No.: 50-338 UNIT NAME: NA-1 DATE: April 1, 1991

! COMPLETED BY: C. Mladen REPORT MONTH: March 1991 PHONE: (703) 894-2537 i

3 4 5 1 2 cause & Corrective Method of Licensee System Component No. Date Type Duration Reason Code Action to Shutting Event Code i (hrs) Prevent Recurrence

! Down Reactor Report #

4 N/A N/A N/A S/G Maintenance planned 91-01 910112 S 216 C r

l l

3: Method 4:

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

E= Operator Training & License Eyamination 9=Other F= Administrative 5: l G= Operational Error Exhibit H - Same Source H=Other (explain)

Page 1 of __1 UNIT SHUTDOWN AND POWER REDUCTIONS Explanation Sheet Docket No.: 50-338 Report Month March Unit Namot NA-1 Yeart 1991 Date: April 1, 1991 Completed by: Cathio Mladen

  1. 91-1 January 12, 1991 Main Generator taken off-line at 0050 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-5 months <br />. Unit ontored Mode 3 at 0123 hours0.00142 days <br />0.0342 hours <br />2.03373e-4 weeks <br />4.68015e-5 months <br />. Unit entered Mode 4 at 1210 hours0.014 days <br />0.336 hours <br />0.002 weeks <br />4.60405e-4 months <br />.

January 13, 1991 Unit entered Mode 5 at 0550 hours0.00637 days <br />0.153 hours <br />9.093915e-4 weeks <br />2.09275e-4 months <br /> for Refueling Outage.

January 21, 1991 Unit entered Mode 6 at 0435 hours0.00503 days <br />0.121 hours <br />7.19246e-4 weeks <br />1.655175e-4 months <br />.

February 14, 1991 Unit entered Mode 5 at 1200 hours0.0139 days <br />0.333 hours <br />0.00198 weeks <br />4.566e-4 months <br />.

March 5, 1991 Unit entered Mode 4 at 1610 hours0.0186 days <br />0.447 hours <br />0.00266 weeks <br />6.12605e-4 months <br />.

March 7, 1991 Unit entered Mode 3 at 0113 hours0.00131 days <br />0.0314 hours <br />1.868386e-4 weeks <br />4.29965e-5 months <br />. Unit entered Mode 2 at 2217 hours0.0257 days <br />0.616 hours <br />0.00367 weeks <br />8.435685e-4 months <br />.

March 9, 1991 Unit entered Mode 1 at 0440 hours0.00509 days <br />0.122 hours <br />7.275132e-4 weeks <br />1.6742e-4 months <br />. Main Generator placed on-line at 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> and commenced unit ramp-up. Unit stable at 30% power at 0609 hours0.00705 days <br />0.169 hours <br />0.00101 weeks <br />2.317245e-4 months <br />. Unit ramp-down commenced to decrease steam leakage from high pressure pump packing gland at 1235 hours0.0143 days <br />0.343 hours <br />0.00204 weeks <br />4.699175e-4 months <br />. Unit stable at 50 MWe at 1453 hours0.0168 days <br />0.404 hours <br />0.0024 weeks <br />5.528665e-4 months <br />. High pressure pump packing gland repacked and commenced unit ramp-up at 1603 hours0.0186 days <br />0.445 hours <br />0.00265 weeks <br />6.099415e-4 months <br />. Unit stable at 30% power at 1702 hours0.0197 days <br />0.473 hours <br />0.00281 weeks <br />6.47611e-4 months <br />.

March 15, 1991 Unit stable at 99% power with turbine governor valve #4 full open at 0343 hours0.00397 days <br />0.0953 hours <br />5.671296e-4 weeks <br />1.305115e-4 months <br />.

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NORTH ANNA POWER STATION UNIT NO. 1 MONTH: March

SUMMARY

OF OPERATING EXPERIENCE 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 March 1, 1991 0000 Began month with unit in Mode 5.

March 5, 1991 1610 Entered Mode 4.

March 7, 1991 0113 Entered Mode 3.

2217 Entered Mode 2.

March 9, 1991 0440 Entered Mode 1.

0500 Generator on-line, commenced unit ramp-up to 30% power.

0609 Unit stable at 30% power.

1235 Commenced unit ramp-down to decrease steam leakage from high pressure pump packing gland.

1322 Unit stable at 125 MWe, 1331 Commenced unit ramp-down to 50 MWe to allow repack of high pressure pump packing gland.

1453 Unit stable at 50 MWe, 1603 High pressure pump packing gland repacked, commenced unit ramp-up to 30% power.

1702 Unit stable at 30% power, Chemistry hold.

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March 13, 1991 0615 Cleared Chemistry hold, commenced unit ramp-up to full power.

March 15, 1991 0343 Unit stable at 99% power with turbine governor valve #4 full open.

March 31, 1991 2400 Ended month with unit at 99.4%, 959 MWe.

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' OPERA 11NG DATA REPORT l

l l DOCKET No.: 50 339 DATE: April 1, 1991 COMPLETED BY: C. Mladen PHONE: (703) 894 2537 OPER ATIL 3 ST ATUS

1. Un i t N ame s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N o r t h A nna 2
2. Reporting Periodt......................... March 1991 2893
3. Licensed thermal Power (MWt) .............

947

4. N ameplat e R ating (Gross MWe) . . . . . . . . . . . . .

907

5. Design Electrical Rating (Net HWe) .......

957

6. Maximum Dependable Capacity (Gross MWe) ..

909

7. Maximum Dependable capacity (Net MWe) ....
8. If changes occur in Capacity Ratings (Items No. 3 thru 7) Since last report, give reasons:

N/A

9. Power levet to which restricted, if any (Net MWe): ,_,N/A N/A
10. Reasons f or restrictions, if any This Month TtD Cuautative 744.0 2,160.0 90,240.0
11. Hours in Reporting Period....... ........................ 2,160.0 '3,294.3 744.0
12. Number of Hours Reactor was Cr iticat . . . . . . . . . . . . . . . . . . . . 0,0 0.0 5,949.6
13. Reactor Reserve Shutdown Hours. ......................... 744.0 2,160.0 72,394.3
14. Houi s Gene r at or 0n L i ne . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.0 0.0 0.0
15. Uni t R eserve shutdown H ours. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,247,408.2 193,496,521.6
16. Crosa T hermal Energy Generated (MVH) . . . . . . . . . , ......... 2,151,635.3 715.200.0 2,076,305.0 63,378,891.0
17. Cross Electrical Energy Generated (MWH).... ............. 60,793,278.0

......... 681,777.0 1,977,798.0

18. Net Elec t rical Energy Generated (MWM). . . . . . . . . . 80.2%

100.0% 100.0%

19. Unit service Factor............. ........................ 100.0% 80.2%

100.0%

20. Unit Availability Factor................................. 100.7% 74.9%

100.8%

21. Uni t Capaci ty F actor (using MDC N e t) . . . . . . . . . . . . . . . . . . . . . 74.3%

101.D% 101.0%

22. Uni t Capac i ty f ac t or ( us ing DE R N et ) . . . . . . . . . . . . . . . . . . . . . 6.2%

0.0% 0.0%

23. F o r c ed Out a ge R a t e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each): _,NONE N/A
25. If Shutdown at end of Report Perled, estimated time of Startupt
26. Units in Test Status (Prior to Commercist Operation):

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICit?

l COMMERCIAL OPERATION

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AVERAGE DAILY UNIT POWER LEVEL Docket No.: 50-339 Unit: NA-2 Dates April 1. 1991 Completed by: __ C. Mladen Phone _( 7 03 ) 894-2537 MONTII: March 1991 DAY AVERAGE DAILY POWER DAY AVERAGE DAILY LEVEL LEVEL (MWe-Net) LEVEL (MWe-Net) 1 917 17 916 2 917 18 _

917 3 919 19 917 4 917 20 917 __

S 917 21 916 6 915 22 918 7 915 23 918 8 915 24 917 9 918 25 918 10 _,

917 26 919 11 917 27 916 12 917 28 917 13 904 29 917 14 917 30 918 15 917 31 914 l

16 916 Instructions:

On this format, list the average dajly unit power level in MWe-Het for each day in the reporting month. Compute to the nearest whole megawatt.

. .)

UNIT SHUTDOWNS AND POWER REDUCTIONS ,

DOCKET NO.: 50-339 UNIT NAME: NA-2 DATE: April 1, 1991 REPORT MONTH: March 1991 COMPLt.1w BY: C. Mladen PHONE: (703) 894-2537 1 2 3 4 5 No. Date Type Duration Reason Method of Licensee System Comoonent 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 Scran 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-Ol61)

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

H=Other (explain) Exhibit H - Same Source

Page 1 o f _1 UNIT S11UTDOWN AND POWER REDUCTIOND Explanation sheet Docket Nc.i 50-339 Report Month March Unit Namet NA-2 Yeart 1991 Datet April 1. 1991 Completed by: Cathic Mlqdpn

  • No entry this month

1 NORTH ANNA POWER DTATION UNIT No.: 2 MONTH: March

  1. _QHBARY-0F oflRATING EXPERIIlLQE Listed below in chronological sequenco is a summary of operating experiences for this month which required load reductions or resulted in significant non-load related incidents.

PJ11e Ilite Pata March 1, 1991 0000 Bogan month with unit at 100%, 963 MWo.

March 13, 1991 0905 Commenced unit ramp down for TVFT.

0940 Unit stable at 863 MWo.

1145 TVFT completed satisfactorily.

1155 Commenced unit ramp up to 100%.

1337 Unit stable at 100%.

March 31, 1991 2400 Ended month with unit at 100%,

963MWo. (

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