ML20236R077

Monthly Operating Repts for June 1998 for Prairie Island Nuclear Generating Plant

ML20236R077
Person / Time
Site:	Prairie Island
Issue date:	06/30/1998
From:	Dugstad D, Sorensen J NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9807210226
Download: ML20236R077 (7)

Text

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• 2 Northern States Power Company Prairie Island Nuclear Generating Plant 1717 Wakonade Dr. East Welch, Minnesota 55089 I

l July 13,1998 Technical Specifications 6.7.A.3 US Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 l

I PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 j Monthly Operating Report June 1998 Attached is the Monthly Operating Report for June 1998 for the Prairie Island Nuclear Generating Plant.

Joel P. Sorensen Plant Manager Prairie Island Nuclear Generating Plant c: Regional Administrator-Ill, NRC k; NRR Project Manager, NRC ,

4 NRC Resident inspector i State of Minnesota - Kris Sanda

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, NRC MONTHLY REPORT ' PRINTED 7/13/199 Prge1 I

DOCKET NO. 50-282

. , UNIT PRAIRIE ISLAND NO.1 DATE 7/13/1998 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1121-4376 l

NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE MONTH: JUNE 1998 During the month of June, Unit 1 was base loaded. There were two power reductions and one shutdown.

On the 3rd at 0059, Unit 1 started to lower power to allow condenser tube cleaning and to add oil to 12 Reactor Coolant Pump. The Unit returned to full power operation on the 4th at 1013.

On the 5th at 1858, Unit 1 tripped due to a shorted stationary gripper coil cable. After equipment was repaired the RCS heatup started on the 15th at 2200. The Reactor was taken critical on the 18th at 0001. The Generator was placed online on the 18th at 1330. The Unit returned to full power operation on the 19th at 1318.

On the 25th at 0149, Unit 1 started to lower power per request of System Dispatch to try to improve grid instability. The grid instability was weather related (storms in the area). The Unit retumed to full power operation by 0600.

The design electrical rating and the maximum dependable capacities (gross and net) were increased by 13 MWE due to the turbine upgrade.

There were no other reductions or shutdowns for the remainder of the month.

CURRENT CONTINUOUS OPERATING RUN OF 12 DAYS w_-_-______-___________--_ _ _

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• NRC MONTHLY REPORT PRINTED 7/13/199 Page 2 DOCKET NO. 50-282

. . UNIT PRAIRIE ISLAND NO.1

DATE 7/13/1998 COMPLETED BY DALE DUGSTAD TELEPHONE 612 388-1121-4376 l

l OPERATING DATA REPORT OPERATING STATUS

1. UNIT NAME: PRAIRIE ISLAND NO.1

2. REPORTING PERIOD: JUNE 1998

3. LICENSED THERMAL POWER (MWT): 1650

4. NAMEPLATE RATING (GROSS MWE): 593

5. DESIGN ELECTRICAL RATING (NET MWE): 543

6. -MAXIMUM DEPENDABLE CAPACITY (GROSS MWE): 558

7. MAXIMUM DEPENDABLE CAPACITY (NET MWE): 526

. 8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS 3 - 7) SINCE LAST REPORT, GIVE REASON:

Capacity ratings were increased by 13 MWE due to turbine upgrade.

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWE): NONE

10. REASONS FOR RESTRICTIONS, IF ANY: NONE l

THIS MONTH YR TO-DATE CUMU_LATIVE

11. HOURS IN REPORTING PERIOD 720 4343 215111

12. NUMBER OF HOURS REACTOR CRITICAL 426.9 4049.9 184826.9

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.00 5571.1 l

14. HOURS GENERATOR ON-LINE 413.5 4013.2 183001.7

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.00 0.00

16. GROSS THERMAL ENERGY GENERATED (MWH) 627489 6517953 290795796

17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 209630 2236240 96054950

18. NET ELECTRICAL ENERGY GENERATED (MWH) 193133 2115939 90350260

19. UNIT SERVICE FACTOR 57.4 92.4 85.1 ,

20. UNIT AVAILABILITY FACTOR 57.4 92.4 85.1 '

21. UNIT CAPACITY FACTOR ( MDC NET) 51.0 94.6 83.2

22. UNIT CAPACITY FACTOR ( DER NET) 50.6 91.6 79.2

23. UNIT FORCED OUTAGE RATE 42.6 7.1 4.6 l

24. FORCED OUTAGE HOURS 306.5 306.5 8847.2

25. SHUTDOWNS SCHEDULED OVER NEXT SIX MONTHS (TYPE, DATE, AND DURATION OF EACH):

N/A

26. IF CURRENTLY SHUTDOWN, ESTIMATED STARTUP DATE:

N/A I

'.- NRC MONTHLY REPORT PRINTED 7/13/199 Page 3 DOCKET NO. 50-282

. . UNIT PRAIRIE ISLAND NO.

• DATE 7/13/1998 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1121-4376 l

UNIT SHUTDOWNS AND POWER REDUCTIONS MONTH: JUNE 1998 DATE UNIT TYPE HOURS REASON METHOD LER NUMBER SYSTEM COMPONENT 6/3/1998 i S 0 B 5 N/A N/A N/A NOTES: Condenser Tube cleaning, add oil to 12 RCP.

6/5/1998 1 F 306.5 A 3 1-98-08 N/A N/A NOTES: Stationary gripper coil cable short.

6/25/1998 1 F 0 H 5 N/A N/A N/A NOTES: Reduce power due to grid instability.

TYPE REASON METHOD SYSTEM CODE F-FORCED A-EQUIPMENT FAILURE 1-MANUAL DRAFT IEEE STD S-SCHEDULED B-MAINTENANCE OR TEST 2-MANUAL TRIP C-REFUELING 3-AUTO TRIP D-REGULATORY RESTRICTION 4-CONTINUED E-OPERATOR TRAINING AND 5-REDUCED LOAD COMPONENT CODE LICENSE EXAMINATION 9 OTHER IEEE STD 803A-1983 F-ADMINISTRATIVE G-OPERATIONAL ERROR H-OTHER

, NRC MONTHLY REPORT PRINTED 7/13/199 P3:De 4 l'

[ DOCKET NO. 50 306

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• UNIT PRAIRIE ISLAND NO. 2 DATE 7/13/1998 COMPLETED BY DALE DUGSTAD TELEPHONE 612-3881121-4376 NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE MONTH: JUNE 1998 During the month of June, Unit 2 was base loaded. There was one power reduction and there were no shutdowns for the month.

Unit 2 started a load reduction on the 28th at 0003 to allow repairs to the Amertap system, to perform condenser tube cleaning and to conduct a Turbine Valves test. The Unit retumed to full power operation on the 29th 9 '900.

There were no other reductions or shutdowns for the remainder of the month.

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l CURRENT CONTINUOUS OPERATING RUN OF 118 DAYS l

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. NRC MONTHLY REPORT PRINTED 7/13/199 Page 5 DOCKET NO. 50-306

. . UNIT PRAIRIE ISLAND NO. 2 DATE 7/13/1998 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1121-4376 OPERATING DATA REPORT t

OPERATING STATUS

1. UNIT NAME: PRAIRIEISLAND NO.2

2. REPORTING PERIOD: JUNE 1998 .

3. LICENSED THERMAL POWER (MWT): 1650

4. NAMEPLATE RATING (GROSS MWE): 593 J

5. DESIGN ELECTRICAL RATING (NET MWE): 500

6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWE): 544

7. MAXIMUM DEPENDABLE CAPACITY (NET MWE): 512

8. IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS 3 - 7) SINCE LAST REPORT, GIVE REASON:

NONE

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWE): NONE

10. REASONS FOR RESTRICTIONS,IF ANY: NONE l '

THIS MON 7H YR-TO-DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD 720 4343 206229 l

12. NUMBER OF HOURS REACTOR CRITICAL 720.0 3420.1 182146.3

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.00 1516.1

14. HOURS GENERATOR ON-LINE 720.0 3411.3 180638.4

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.00 0.00

16. GROSS THERMAL ENERGY GENERATED (MWH) 1159633 5553443 288018030 l

17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 375060 1833320 94330730 1 18. NET ELECTRICAL ENERGY GENERATED (MWH) 353707 1728546 89179716 l

19. UNIT SERVICE FACTOR 100 78.5 87.6 ,

i i 20. UNIT AVAILABILITY FACTOR 100 78.5 87.6 l

21. UNIT CAPACITY FACTOR ( MDC NET) 95.9 77.7 86.1

22. UNIT CAPACITY FACTOR ( DER NET) 92.7 75.1 81.6

23. UNIT FORCED OUTAGE RATE O 21.5 3

24. FORCED OUTAGE HOURS 0.0 931.7 5662.8

25. SHUTDOWNS SCHEDULED OVER NEXT SIX MONTHS (TYPE, DATE, AND DURATION OF EACH):

N/A

26. IF CURRENTLY SHUTDOWN, ESTIMATED STARTUP DATE:

l N/A L_______________ _ _ _ _ _ _ _ _ _

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. NRC MONTHLY REPORT PRINTED 7/13/199 Page 6 DOCKET NO. 50-306

. , UNIT PRAIRIE ISLAND NO,2 DATE 7/13/1998 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1121-4376 l

UNIT SHUTDOWNS AND POWER REDUCTIONS MONTH: JUNE 1998 DATE UNIT TYPE HOURS REASON METHOD LER NUMBER SYSTEM COMPONENT 6/28/1998 2 S 0 B 5 N/A N/A N/A NOTES: Condenser Tube cleaning, Turbine valve testing.

TYPE REASON METHOD SYSTEM CODE F-FORCED A-EQUlPMENT FAILURE 1-MANUAL DRAFT IEEE STD S-SCHEDULED B MAINTENANCE OR TEST 2-MANUAL TRIP C-REFUELING 3-AUTO TRIP D-REGULATORY RESTRICTION 4-CONTINUED E-OPERATOR TRAINING AND 5-REDUCED LOAD COMPONENT CODE LICENSE EXAMINATION SOTHER IEEE STD 803A-1983 F-ADMINISTRATIVE G-OPERATIONAL ERROR H-OTHER

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