ML20077C246

Monthly Operating Repts for Apr 1991 for North Anna Power Station Units 1 & 2

ML20077C246
Person / Time
Site:	North Anna
Issue date:	04/30/1991
From:	Mladen C, Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
91-278, NUDOCS 9105210072
Download: ML20077C246 (12)

Text

.___.

m..

VIHulNIA En. :rtuic Axn l'ows:ia Cosli Asy Itir n> o x u,V ntoix44 e n e n:

May 15, 1991 U. S. Nuclear Regulatory Commission Serial No.91-278 Attention: Document Control Desk NL&P/JMJ:Jmj Washington, D.C. 20555 Docket Nos.

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

l VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1 AND 2 MONTHLY OPERATING REPORT Enclosed is the Monthly Operating Report for North Anna Power Station Units 1 and 2 l

for the month of April 1991.

Very truly yours, b

hAo

. (et W. L. Stewart Senior Vice President Nuclear l

Enclosures cc:

U.S. Nuclear Regulatory Commission 101 Marietta Street, NW Suite 2900 Atlanta, GA 30323 L

Mr. M. S. Lesser l

NRC Senior Resident inspector l

North Anna Power Station pean tasqr i

i l

VIRGINIA POWER COMPANY NORTl! ANNA POWER STATION MONTIILY OPERATING REPO*AT MONTil t _ April YEAR:

1991 Approved:

L TiilManager\\h-Stat

0

/

4 CPIRAllWG Dala $tPDR1 00CKti hD.4 50 338 00CLt1 h0.4 50-338 OAft: May 1, 1991 COMoltitD 8v C. Mladen Phoht (703) 894 2774 DrteAf thG STA10$

1.

Uni t h one s................................ h o r t h A nna 1 2.

k epor t i ng Per 10ds......................... Apr i l 1991 3.

L ic ensed T herne t Power ( MWt ):.............

2.893 4 hameplate Rating (Grost MWe).............

947 5.-Design tiectrical Rating (het MWe).......

907 6.

Mante an Dependable Capacity tGross Mwe)..

959 7 Masiman Deperdable Capacity (het MWe)r....

911 8.

If changes occur in Capacity Ratings (Itens ho. 3 thru 7) since last report, give reasons:

N/A 9 Power levet to which restricted, if any (het MWe):,,_N/A

10. Reasons for restrictions, if any:

N/A this Month YtD Cumulative

11. Hour s i n R epor t i ng Pe r i od................................

719.0

?,879.0 112.691.0

12. hamber of Hours Reactor was Critical............

719.0 1,561.6 81,552.5

13. kcac t or R eserve Shutdown Hours.............,.............

0.0 21.6 6,625.2

14. Nours Generator On.Line.................................,

719.0 1,530.9 78.750.9

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

0.0 0.0 0.0

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

2,071,896.5 3,797.512.8 208.783,748.8

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

689,082.0 1.256,866.0 68,598,204.0 if, het tiectrical Energy Generated (MWH)....................

657,104.0 1.191.019,0 64,919.771.0

- 19. Un i t. $ e r v i c e f a c t o r......................................

100.0$

$3.2% -

69.9%

20. Uni t A ve l i abi l i t y f act or.................................

100.0%

$3.2%

69.9%

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

100.3%

45.4%.

64.4%

22. Uni t Capacity f actor (using DER het)..........

100.8%

45.6%

03.5%

23. forced Outage Rate.......

4...............

0.0 0.0%

12.3%

~

24. Shutdowns $cheduled Over heat 6 Months (Type,' Date. and Durat ton of._ tach):,, hone

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

26. Units in fest Status (Prior to Cecrercial Operation):

forecast Achieved

~

INiilAL CRiflCALITY l

_lWlilAL FLECTRIClif l-CDMMERCIAL OPERATION l

i AVERAGE DAILY UNIT POWER LEVEL Docket No.:

50-338 Unit NA-1 Date:

May 1.

1991 Completed by C.

Mind _ oft Phone (701) 821-222A MONTit

_ April 1991 DAY AVERAGE DAILY POWER DAY AVERAGE DAILY LEVEL LEVEL (HWo-Net)

LEVEL (HWo-Net) 1 911 17 9_18 4

2

_ 911 18 917 3

912 19 916 4

3R 20 916 5

913 21 9_1_6 6

914 22 116 7

912 23 915 8

915 24 915 9

916 25 915 10 916 26 916 11 915 27 216 12 902 28 917 13 911 29 913 14 911 30 917 15 910 16 915 Instructions:

On this format, list the average daily unit power level in MWe-Not for-each day in the reporting month, compute to the nearest whole megawatt.

l l-

,!,t'.>f i[ f' [ !f.

F!1[i

.tvi

!tLIti!rl Yt((j((f![Il I[lrfi>

s e

s e

nase e

ot nl c

n i aei r

8 e

e e

t D cF u

3 1 d4 v

c c

i o

i n

3 -

a7

- A l 7 t

e uf L)

S ro R

0N M2 c

r t

rE e

5 1

eor snoL m

9. 4 rt u 9 C9 r

c nof

(

a I i S

1 8

one t st

)

C oR

- at r1 i

)

r eo6 1 Y3

& t t F aepl H

B0 cn ph eO

. : y 7

eA e oE au(

s v

t eSR -

t ir G

i NMM t

u e

b pytE b

a r

A i

i rnR i

TN s:

C P

h rt eU h

LE x onvN x

1-T TE P N E

Ef EE

(

CI TMO 4

5 ONA OH DUDCP 5

m t

a n

n rso e

mcni ne aS ot od r

i c po cct u mC Si ad o

t ue C

dl l anR oaami r

4 h uuotd e mee t nnt nah eaauoot tdso MMMA CLO S.

= = = =

yC N

1 23 4 5 9 S

O 3

- I 1

- T 9

C.

9 e

U 1

et s nt DE l

ner n

R i

evo r

cE p o

i R

p i

e t

E A

L R

a W

n O

i D

H r

m T

3 o

a D

N f

t x

N O

ogc E

A M

na di e e

)

S T

otR n

s N

R h t i

n W

O t un C

P eh w a

e l

c u

E MS o p

ni l

R D

x oL u

e i

h 2

( t t&

n S

s c

o ee i g r

s T

rT rn o

a I

u ti r

)

N e

l r snern U

R i o eivEi n

a R ai a

o F e rtl l c

yTaap i) t s

't ngr-rnx nanort oe ar rh enit osi(

nmel ati t u(

opt el anar D

si nu urire 1

h auif gemeh e

t eqaeepd pt p

n R EMR ROAOO y

o

= = = = =

• ABCDEFGH T

m 2

s i

h d

e t

e l

ta y

d u D

r ed t

ece n

prh e

yoc TF S o

FS o

N N

1

,)I'l!'

t4fl,

.;j l l';l4f i!l a:

'iii

!<i l4i!

,';;)

j!l<'!;il

o Page 1

o f

,_._1 UNIT SHUTDOWN AND POWER REDUCTIONS Explanation Sheet Docket No.:

50-338 Report Month Ap d Unit Name NA-1 Years 1991 Date: May 1, 1991 4

Completed by:

Cathie_Mladen No entry thin month t

4--...-..-

.-.,,-__w._,..

.m-.

.-.i.

..--..m

NORTH ANNA POWER STATION UNIT No.I 1

MONTH:

___hp r i 1 MMMARY_01' 9PIRATWO_EXEERIENCE Listed below in chronological sequence is a

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

Ra33 T_ing Dala i

April 01, 1991 0000 Began month with unit at 99.4%,

959MWo with turbine governor valvo

/4 full open.

April 12, 1991 0910 Commenced unit ramp down for TVTT.

1028 Unit stable at 88.5%.

1135 TVFT completed natisfactorily, i

1140 Commenced unit ramp up.

1350 Unit stable at 99.5%.

April 16, 1991 0940 Commenced performance of special test procedure 1-ST-93.

purpose of the procedure is to allow reactor power to reach 100% and increase electrical output by bypassing a portion of the foodwater flow to the first point feedwater heators.

1300 Completed manipulation of the first point feedwater heater bypass valves por 1-ST-93.

The bypass valves are approximately 33-38%

open.

Unit stable at 100%.

April 30, 1991 2400 Ended month with unit at 100%,

960MWo.

l T

t l

...... - - -. - - - - - - ~ ~ - - - -

r i

.4 i

OrERA11hc DATA RIPosi L

00Citt ko.:

50 339 CATE: May 1. 1991 COMPLEltp BY:

C. Mladen l

PH0kt t (703) 694 2774 OrtRAilNG $1A105 1.

Uni t kane s............................... N or t h A nna 2 2.

R epor t i ng Per i od t......................... Apr i l 1991 r

3.

L i c ensed t hernal Power (MWt ) t.............

2893 4 haneplat e Rat ing (Gross MWe).............

947 1

5.

Design tiectricat Rating (het MWe):.......

907

}

6.

Maniman Dependable Capacity (Gross MWe)..

'957 7.

Manimun Ocpendable Capacity (ket MWe)t....

909

8...lf changes occur in Capacity Ratings (items No. 3 thru 7) since test report, give reasons:

N/A I

9.

Power levet to which restricted, if any (het MWe): ___N/A

10. Reasons for restrictions, if any:

N/A this Month VtD Cunulative

11. H our s i n R epor t i ng Pe r i od..............................

719.0 2,879.0 90,959.0 12.- Number of Hour s R eac t or was C r i t i c a t...................

719.0

?,879.0 74,013.3

13. R9ac tor R eserve Shutdown hours...................

0.0 0.0 5.949.6

14. hours Generator On Line........................

719,0 2,879.0 T3.113.3

15. Unit Reserve shutdown Hours......................

0.0 0.0 0,0

16. Cross thermat Energy Generat ed (MWH)..................... 2,079.289.4 8,326,677.6 195,575.811.0

17. Gross ( L ec t ri cal Energy Generated (MWH)................

690,195.0 2,766,500.0 64,069,086.0 e

18.- h et ( L ec t ri cal Energy Gene ra t ed (MWN)....................

657.860.0 2,635,658,0 61,451,138.0

19. Unit Service factor...............

100.0%

100.0%

80.4%

20. Unit Availability factor.................................

100.0%

100.0%

80.4%

'21. Unit Capacity Factor (using MDC het).........

100.7%

100,7%

75.1 %

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

100.9%

100.9%

74.5%

23. forced Outage Rate................

0.0%

0.0%

6.1%

24. Shutdowns Scheduled over heat 6 Months (1vpe, Date, and Durat ion of Each): __ hone l

l l

l l

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

N/A I

26. Units in fest Status (Prior to Converciat Operetten):

Forecast Achieved j.

IW111AL CRITICAL!1f INITIAL [LEC1RIClfY COMMERCIAL OPERATION

______.,__,_,__.-._..__._,.__,_--..-,._.._.,..,r.,,_._

i e

AVERAGE DAILY UNIT POWER LEVEL Docket No.I S0-323 Unitt 11 A-2 Date

_. Jay _L 1991_

Completed by

__Cd11minn__

Phones 171 1) 094-2774 f

MONTH April 1991 DAY AVERAGE DAILY POWER DAY AVERAGE DAILY LEVEL LEVEL (HWe-Net)

LEVEL (MWe-Net) 1 916 17 914 2

916 28 913 3

915 19 91,4 4

916 20 9 13 5

902 21 914 6

904 22 915 7

915 23 916 8

918 24 9 15 9

919 25 915 10 920 26 916 11 920 27 911 12 318 28 2_13 13 917 29 913 14 926 30 913 15 917 16 915 l

Instructions on this. format, list the average daily unit power level in MWo--

Not-for each day in the reporting month.

Compute to the nearest whole megawatt.

l l

IINIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.:

50-339 UNIT NAME:

NA-2 DATE: May 1, 1991 REPORT MONTH: April 1991 4XTMPLETED BY:

C. Mladen PHONE:

(703) 894-2774 I

l I

i 1

2 3

4 5

No.

Date Type Duration Peason Method of Licensee System Corponent Cause & Corrective (hrs)

Shutting Event Code Code Action to Down Reactor Report #

Prevent Recurrence

• No entry this month 3: Method 4-l 1: Type 2: Reason F= Forced A= Equipment Failure (explain) 1= Manual Exhibit F - Instructions 2= Manual Scram for preparation of Data l

S= Scheduled B= Maintenance or Test 3= Automatic Scram Etitry Sheets for Licensea C= Refueling 4rContinuations Event Report (LER) File l

D= Regulatory Restriction E= Operator Training & License Examination 5= Load Reduction (NUREG-OI61)

F= Ad:ninistrative 9=Other 5:

G= Operational Error Exhibit H - Sa w Source H=Other (explain)

i Page 1

O f

_1 UNIT Dl!UTDOWN AND POWER REDUCTIONS Explanation Sheet Docket No.t 50-339 Report Month Apr_il Unit Names NA-2 Yeart-1991 Datet liny 1.

1991 completed by:

Cathie Mladen

• llo entry this month l

l l

I l

1 l

l

NORTil ANNA POWER STATION UNIT NO.I 2

MONTill April i

MMMARLQF_DEEBhTING EXEERICHRE Listed below in chronological acquence in a

nummary of operating experiences for this month which required load reductions or resulted in significant non-load related incidents, i

1 DAt1 Ti!R9 Data April 01, 1991 0000 Began month with unit at 100%,

903MWo.

April 05, 1991 0854 Commenced unit ramp down for TVFT.

0934 Unit stable at 877MWo.

1130 TVFT completed natiofactorily.

1200 Commenced unit ramp up to 98% for 2-PT-24.1, NI calibration.

1224 Unit stable at 98%.

1244 Completed 2-PT-24.1 and commenced unit ramp up to 100%.

j 1259 Unit stable at 100%.

2202 IB feedwater heater on divert to condenser in preparation for accuring B

high pressure heater drain pump for maintenanco.

2214 Secured B high pressure heater drain pump.

April 06, 1991 1321 Returned B

high pressure heater drain pump to service.

l April 30, 1991 2400 Ended month with unit at 100%,

960MWo.

,