ML19225A173

Monthly Operating Rept for June 1979

ML19225A173
Person / Time
Site:	Prairie Island
Issue date:	07/02/1979
From:	Hunstad A NORTHERN STATES POWER CO.
To:
Shared Package
ML19225A170	List: ML19225A169 ML19225A173
References
MOR-790630-1, NUDOCS 7907180516
Download: ML19225A173 (4)

Text

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C"?LETF9 TY A. A. Hunstad

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pc prq June 1979 _.

7 The unit is in Load Follow operation this month. An outage was take.: at

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2034 on June 8th to correct problems with the turbo-generator hydrogen seal 9 oil system; a cooldown was done so that examination of feedwater nozzles could d be done. No crack indications were seen. The unit was returned to service at

'l c 0400 on June 12th.

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DAILY UNIT POWER OUTPUT l

DOCKET NO. 50-282 UNIT Prairie Island No. 1 DATE 790702 ~

COMPLETED b. A. A. Ilunstad~

TELEPHONE 612-388-4767 MONTil June 1979 DAY AVERAGE LOAD MWe-Net DAY AVERAGE LOAD MWe-Net 1 502 17 321

' 504 18 480 1 503 to 438

. 504 20 501

.s 503 21 437 6 504 22 499 7 502 _

21 498 3 425 24 496 9 -17 25 497 10 -18 26 498

1 -20 27 503 1, 190 28 493 13 462 29 498 14 498 30 498 15 501 31 16 493 Average loads a$ove 503 %'e-Net are due to ecole. condenser circulating water 347 262

OPERATING DATA REP 0_R_T 4

DOCKET NO 50 282 DATE 790702 COMPLETED BY A. A. Hunstad OPERATING STATUS TELEPHONE 612-388-4767

1. Unit Name: Prairie Island No. 1 June 1979 Notes

2. Reporting Period: l

3. Licensed Thermal Power (FNt). 1650 l 4 Nameplate Rating (Gross FNe):_ 593 4

5. Design Electrical Rating (Net FNe): 510

6. Maximum Dependable Capacity (Gross FNe): 534 N 7. Maximum Dependable Capacity (Net FNe): 503

8. If Changes Occur in Capacity Ratings (Items Number 1 Through 7) Since Last Report:

d Give Reason:

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[ 9. Power Level To Vhich Restricted, If Any (Net FNe) -

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,7 10. Reasons for Restrictions, If Any:

This Month Yr-To-Date Couulative 720 4343 48551

11. Hours In Reporting ieriod

12. Number Of Hours Rea: tor Was Critical 643.7 3567.4 38256.5

13. Reactor Reserve Shu:down Hours 76.3 104.5 4559.6 14 Hours Generator on ine 640.6_

3511.1 37228.3

15. Unit Reserve Shutdosa Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (5 H) 1014740 _

5431L 4 _

57711846

17. Gross Electrical Ene gy Generated (MWH) 326060 1783490 18814380

18. Net Electrical Energ Generated OUH) 304478 1670166 17598598

19. Unit Service Factor 89.0 80.8 76.7

10. Unit Availability r 4ctor 89.0 80.8 76.7

21. Unit Capacity Facti.r (Using MDC Net) 84.1 76.5 72.1

22. Unit Capacity Factor (Using DER Net) 79.8 72.6 68.4

23. Unit Forced Outage Rate 0.0 0.8 11.6

14. Shutdowns Scheuuled Over Next 12 ':onths (Type, Date and Duration of Each):

Refueling, Spring 80, 5 weeks _ ._

25. If Shut Down at End Of Report Period, Estimated Date of Str.rtup:

bN bb

UMIT T.lUTD0kNS AND P_0NER RZDUC CIONS JOCKEr N3. 0- 282 REPORT MONTH June 197o UNIT :lluZ ?rairic Islanl No. 1 DATE 790702 ~ ~' ~

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l l 790608 i S 79.4 B i 2 N/A  ! IIA GENERA Shutdown and cooldown to inspect S i

, i  ! feedwater nozzles and make re-

[ l l  ; j l pairs to turbo-generator hydro-o i '

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gen seal oil system.

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F: Forced Reason Method: Exhibit.G-In-S: Scheduled A-Equipment Failure (Explain) 1-Manual structions for B '!aintanance or Test 2-Manual Trip Preparation of C-Refualing 3-Automatic Trip Data Entry Sheets D-Regulatory Restriction 4-Other (Explain) for Licensee Event E-Operator Training & License Examination Report (LER) File F-Administrative ('WREG-0151)

G-Operational Error (N plain) 5 H-Other (2xplain Exhuit 1 - 3 ra " :. ' 2 2

"3r w Tr" rary re e'. or!,pi'.r'i'. TVT'EnTFly.E pqC)*ET ro. 50 306 InnT reni ric. Isin ,a ns. T

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Cot'"7 ETFD RV A. A. Hunstad '

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' The unit is in Load Follow operation this cwnth. A trip occurred at 0455 g on June 3rd due to undervoltage on 4KV Bus 22 when No. 22 feedwater pump

,j motor failed. The unit was returned to service at 1000 the same day but r- was limited to about 60% power (with only one feedwater pump) until June 19th when the repaired motor was returned to service.

347 265

DAILY UNIT POWER OUTPUT DOCKET No. 50-306 UNIT Prairie Island No. 2 DATE 790702 COMPLETED BY A. A. Hunstad TELEPHONE 612-388-4767 MONTil June 1979 _

DA_Y AVERAGE LOAD MWe-Net DAY AVERACE LOAD MWe-Net i

_424 17 177

- 2 422 18 262 3 146 19 431 c.

257 20 495 3 265 21 461 6 277 22 496 7 280 23 496 8 256 24 403 9 285 25 486 to 287 26 405 11 258 27 438 12 278 28 409 13 _

324 29 430 14 306 30 403 15 309 31 16 __

305 Average loads above 300 ;L'e-Ne t are due to cooler condenser circulating water.

347 266

OPERATING DATA REP 0_R_T DOCKET NO 50 306 DATE 790702 COMPLETED BY A. A. Hunstad OPERATING STATU$ TELEPHONE 612-388-4767

1. Unit Name: Prairie Island No. 2

2. Reporting Period: June 1979 Notes

3. Licensed Thermal Power (MWt): 1650 l

4. Nameplate Rating (Gross tMe): 593 i

5. Design Electrical Rating (Net MWe): 530

6. Maximum Dependable Capacity (Gcoss MWe). 531 C 7. Maximum Dependable Capacity (Net MWe): 500

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report:

v m Give Reason:

=

9. Power Level To Which Restricted, If Any (Net MWe) -

e 10.

Reasons for Restrictions, If Any:

This Month Yr-To-Date Cuuulati'c

11. Hours In Reporting Period 720 4343 3%69

12. Number Of Hours Reactor Was Critical 716.8 4293.3 34736.9

13. Reactor Reserve Shutdown Hours 3.2 6.5 1385.4 14 Hours Geterator On Line 714.9 4283.0 34018.6

15. Unit Reserve Shutdown He. , 0.0 0.0 0.0

16. Gross Thermal Energy Generated (!NH) 870041 6702234 52721519

17. Gross Electrical Energy Generated (?MH) 270820 2190640 16784380

18. Net Electrical Energy Generated (MWH) 250153 2063649 15709237

19. Unit Service Factor 99.3 98.6 85.8

20. Unit Availability Factor 99.3 98.6 85.8

21. Unit Capacity Factor (Using MDC Net) 69.5 95.0 79.2

22. Unit Capacity Factor (Using DER Net) ,

65.6 89.7 74.7

23. Unit Forced Outage Rate 0.7 0.4 5.4

'4. Shutdowns Scheduled over Next 12 :fonths (Type, Date and Duration of Each):

Refueling. December 79, 5 weeks

23. If Shut Down at End Of Report Period, Estimated Date of Startup: _

41 I

UNIT 5?IUTDO:OIS A?'D _@'12R RIDUC CIONS DOCKr.I N3. 30 306 REPORT MONIll June 1979 UNIT M P,rairi2 I;1anf [-_{ '

DATE 79UIUT CGMPLETED 3Y A. A. Hunstaf - ' ~~~

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2 790603 F 5,1 A 3 N/A CH MOTORX ' Trip due to bus undervoltage due

• ! to failure of No. 22 feedwater j l pump motor.

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1 F: Forced Peeson Method: Exhibit.C-In-S: Scheduled A-Equipment Failure (Explain) 1-Manual structions for B-Maintenance or Test 2-Manual Trip Preparation of C-Refnaling 3-Automatic Trip Data Entry Sheets D-Regulatory Restriction 4-Other (Explain) for Licensee Event E-Operator Training & License Examination Report (LER) Fila F-Mministrat ive (NUREC-01;l)

G-Operrional Error (Englain) 5 H-Other (Explain Exhibit 1 - Gru ?'.22