ML19259A854

Monthly Operating Rept for Dec 1978

ML19259A854
Person / Time
Site:	Prairie Island
Issue date:	01/02/1979
From:	Hunstad A NORTHERN STATES POWER CO.
To:
Shared Package
ML19259A852	List: ML19259A850 ML19259A854
References
NUDOCS 7901110082
Download: ML19259A854 (8)

Text

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n. The unit was removed from service at 0348 on 12-9 to replace H the detector for NIS Channel N42 and to add oil to the reactor M coolant pump motors. The reactor remained at hot standby (critical) during the work but tripped on the restart. The unit was returned to service at 1423 the same day.

SPENT FUEL STORAGE UPDATE Fuel assemblies in each core - No change Fuel assemblies in the spent fuel storage pool - 240 Licensed spent fuel storage pool capacity - No change Date of last refueling that can be discharged with present capacity - No change 790111oo %

DAILY UNIT POWER OUTPUT DOCKET NO. 50- 282 UNIT Prairie Island No. 1 DATE 790102 COMPLETED BY A. A. Hunstad TELEPHONE 612-388-4767 MONTH December 1978 DAY AVERACE LOAD MWe-Net DAY AVERAGE LOAD MWe-Net n

$ 1 517 17 518 E

- 2 515 18 518

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3 518 19 515 5 4 516 20 517 c.

5 517 21 514 6 517 22 514 7 516 23 516 8 517 24 5J7 9 201 25 517 10 502 26 515 11 513 27 517 12 516 28 514 13 517 29 516 14 516 39 515 13 515 31 517 16 516 Average loads above 507 trie-Net are due to cooler condenser circulating water.

OPERATING DATA REPORT DOCKET No 50- 282 DATE 790102 COMPLETED BY A. A. Hunstad OPERATING STATUS TELEPHONE 612-388-4767

1. Unit Na=c: Prairie Island No. 1

2. Reporting Period: December 1978 Notes

3. Licensed Thermal Power (MWt): 1650

4. Nameplate Rating (Gross MWe): 593

5. Design Electrical Rating (Net MWe): 530

6. Maximum Dependable Capacity (Gross MWe): 538 3 7. Maximum Dependable Capacity (Net MWe). 507 g 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report:

$ Cive Reason:

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

3 10. Reasons for Restrictions, If Any:

This Month Yr-To-Date Cu aulative

11. Hours In Reporting Period 744 8760 __ 44208

12. Number Of Hours Reactor Was Critical 742.5 34689.1 8104.3_

13. Reactor Reserve Shutdown Hours 0.0 103.0_ 4455.1

14. Hours Generator on Line 733.4 8014.7_ 33717.2*

15. Unit Reserve Shutdown Hours 0.0 0 . 0_ _ 0.0

16. Gross Thermal Energy Generated (MWH) 1198352 12446517 52280582

17. Gross Electrical Energy Generated (MWH) 399410 4063370__ __17030890

18. Net Electrical Energy Generated (MWH) 376029 3810718 15928432

19. Unit Service Factor 98.6 91.5 76.3

20. Unit Availability Factor 98.6 91.5 76.3

21. Unit Capacity Factor (Using MDC Net) 99.7 71.1

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22. Unit Capacit' Factor (Using DER Net) 95.4 82.1 68.0

23. Unit Forced Outage Rate 0.0 1.6 _ 12.5

24. Shutdowns Scheduled Over Next 12 Months (Type, Date and Duration of Each):

Refueling, Fall 1979, 5 weeks

25. If Shut Down at End Of Report Period, Esticated Date of Startup:

• includes small correction for previous errors

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-- - - . _ _ . . . _ . . . . _ _ _ . . .. . . , . . . . . , . . . . . . . . . . . . , ._. _ ,_. . , _ , . , _. ._ j F: Forced Reason  !!cthod: Exhibit G-In-S: 'ich ed tiled A--Equivan t Fail tre(r :p?.ain) 1 -?hnini structi,ns for Il-? taint 2 nance or Test  ? Man.ial Trip Preparation of C-Raft 211n7, 3-A itamtic Trip Data Entry Sheeta D-Regulatary Restrier. ion  ?>-Other (E::, lain) for Lice. na F. vent E-Opar nnr Trainina, 5 1.lcense Exuination Report (LE;t) Fil.2 F-Mmla int r e ive '

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M The Cycle 3-4 refueling was ended at 0942 on 12-16, an outage of 19 days, 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br />. An MSIV test button was inadvertently operated at 0220 on 12-17, causing an MSIV closure and turbine trip / reactor trip. The unit was returned to service at 1013 the same day.

DAILY UNIT POWER OUTPUT DOCKET NO. 50- 306 UNIT Prairie Island No. 2 DATE 790102 COMPLETED BY A. A. Hunstad TELEPHONE 612-388-4767 MONTH __ Dececher 1978 DAY AVERACE LOAD MWe-Net DAY AVERACE LOAD MWe-Net n

-2 x

f 1 17 96 g7 2 -2 18 319

[ 3 -2 19 428 a 4 -2 507 g 20 5 -2 21 518 6 -2 22 517

/ -2 23 520 8 -2 _

24 521 9 -2 25 522 10 -2 26 487 11 -2 27 522 12 -3 28 518 13 -8 29 521 14 -13 30 519 15 -17 31 524 16 61 Average loads above 507 Mie-Net are due to cooler condenser circulating water.

OPERATING DATA REPORT DOCKET No 50- 306 DATE- 790102 COMPLETED BY A. A. Hunstad OPERATING STATUS TELEPHONE 612-388-4767

1. Unit Name: Prairie Island No. 2 tes

2. Reporting Period: December 1978

3. Licensed Thermal Power (FNt): 1650

4. Nameplate Rating (Gross FNe): 593

5. Design Electrical Rating (Net MWe): 530

6. Maximum Dependable Capacity (Gross MWe): 538

7. Maximum Dependable Capacity (Net FNe). 507 g 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report:

$ Give Reason:

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

[o Reasons for Restrictions, If Any:

10.

This Month Yr-To-Date Cu aulative 744 8760 35326

11. Hours Iu Reporting Period _

398.2 8181.4 30443.6

12. Number Of Hours Reactor Was Critical 0.0 8.2 1378.7

13. Reactor Reserve Shutdown Hours 366.4 8128.8 29735.6

14. Hours Generator On Line _

0.0 0 . 0_ _

0.0

15. Unit Reserve Shutdown Hours 546549 12820171_ 46019285

16. Gross Thermal Energy Generated (MWil) _

182000 4180680 14587740

17. Gross Electrical Energy Generated (FNH) 16883F 3924435 13645588

18. Net Electrical Energy Generated (FNH) _

49.2 92.8 84.2

19. Unit Service Factor _

49.2 92.8 84.2

20. Unit Availability Factor 44.8 88.4 76.2

21. Unit Capacity Factor (Using MDC Net) .

42.8 84.5 72.9

22. Unit Capacity Factor (Using DER Net) __ ___

2.1 0.4 6.0

23. Unit Forced Outage Rate _

24. Shutdowns Scheduled Over Next 12 Months (Type, Date and Duration of Each):

Refueling, Spring 1979, 5 weeks

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

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F. Forced Reason Method: Exhibit G-In-S: ";cheduled A -Equi,'nant Failure (F. :p'.ain) 1 -!hnin t structi,ns for B-?!aint: nance or Test 2 -Man tal Trip PreparatLon of C-Ra f '211n'; 3 -A* tor'1 tic Trip Data .'atry P,heeta D-Regulatary Restriction 4-Other (F.:;? lain) for T.icensea F. vent E--0;nra'.ar Trainin'; 5 Licensa I;Y..imination R? port (i.ET) Fil:

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