ML20141A958

Monthly Operating Repts for April 1997 for Prairie Island Nuclear Plant

ML20141A958
Person / Time
Site:	Prairie Island
Issue date:	04/30/1997
From:	Dugstad D, Sorensen J NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9705150075
Download: ML20141A958 (9)

Text

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Northern States Power Company 1717 Wakonade Drive East Welch, MN 55089 Telephone 612-388-1121 May 8,1997 Prairie Island Technical Specifications Section 6.7.A.3 US Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 1

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Monthly Operating Report Anril 1997

) f 3f Attached is the Monthly Operating Report for April 1997 for the Prairie Island Nuclear Generating Plant.

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f Joel P Sorensen Plant Manager Prairie Island Nuclear Generating Plant c: Regional Administrator-lll, NRC NRR Project Manager, NRC NRC Resident inspector State of Minnesota - Kris Sanda Attachment I.lil .Ill1.11111.I!i1I1111.111B1.11111I1 4 A00k1 ',_ . _ ..._ . . - - - - -

9705150075 970430 PDR ADOCK 05000282 R PDR

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PRIMTED 03/08/97

. _. NRC. MONTHLY REPORT Page1 DOCKET NO. 50-282 UNIT PRAIRIE ISLAND NO.1 DATE 05/08/97  !

COMPLETED BY DALE DUGSTAD TELEPHONE 612-3881121-4376  :

I t

i NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE MONTH: APRIL 1997 l i

] .

Daylight Savings time began on the 6th, i Unit 1 was base loaded. A power reduction started on April 13 at 0504 for a Turbine Valve test. -l i

The test was completed at 0815 and the unit retumed to full power operation by 1256 of the same day.

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The cooling towers (pumps only) were started on the ist. The cooling tower fans were started around the 18th.

t On April 25th at 2205 the unit started down for a maintenance outage to perform AFWP Runout Protection design change an.1. condenser tube cleaning. The turbine was taken off line at 0352 and the reactor was manually tripped (by procedures) at 0424 on 4/26/97. On April 27 at 1239 the reactor was taken critical. The turbine went on line at 1614 of the 27th and the unit retumed to full power at 0500 on April 28th.

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l CURRENT CONTINUOUS OPERATING RUN OF 3 DAYS 4

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PRINTED 0/2/97

, . NRC. MONTHLY REPORT Page 2 DOCKET NO. 50-282 <

UNIT PRAIRIE ISLAND NO,1

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DATE 5/6/97 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-11214376 AVERAGE DAILY POWER LEVEL l UNIT 1 MORTH: APRIL 1997 ,

DAIE; AVERAGE DAILY POWER LEVEL 4/1/97 520 4/2/97 520 4/3/97 520 4/4/97 520  ;

4/5/97 523 i t

4/6/97 522 4/7/97 524 4/8/97 529 4/9/97 522 i 4/10/97 533 4/11/97 528 4/12/97 528 4/13/97 432 4/14/97 528 4/15/97 529 4/16/97 527 4/17/97 524 4/18/97 510 4/19/97 514 4/20/97 521 4/21/97 509 4/22/97 516 4/23/97 515 4/24/97 515 4/25/97 505 4/26/97 -4 4/27/97 23 4/28/97 482 4/29/97 509 4/30/97 515  :

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AVERAGE LOADS ABOVE 513 MWE-NET ARE DUE TO COOLER CONDENSER CIRCULATING WATER l

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. _ . -- ..- _. . ~ = . - -. - . _ . - . . . . -.

PRINTED 5/6/97

. NRC. MONTHLY REPORT Paga3 0,

DOCKET NO. 50-282

, UNIT PRAIRIE ISLAND NO.1 DATE 5/6/97  :

4 COMPLETED BY DALE ,

DUGSTAD OPERATING DATA REPORT OPERATING STATUS

1. UNIT NAME: PRAIRIE ISLAND NO.1

2. REPORTING PERIOD: APRIL 1997 2

3. LICENSED THERMAL POWER (MWT): 1650 i

4. NAMEPLATE RATING (GROSS MWE): 593

5. DESIGN ELECTRICAL RATING (NET MWE): 530

6. MAXIMUM DEPENDABLE CAPACITY (GROSS MWE): 545

7. MAXIMUM DEPENDABLE CAPACITY (NET MWE): 513

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

NONE l

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

10. REASONS FOR RESTRICTIONS, IF ANY: NONE >

a d

IlilSJdQRIB YR-TO-DATE CUMULATIVE i

) 11. HOURS IN REPORTING PERIOD 719 2879 204887 l 12, NUMBER OF HOURS REACTOR CRITICAL 686.8 2846.8 176587.5

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.00 5571.1 a

14. HOURS GENERATOR ON-LINE 682.6 2842.6 174864.3 6

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.00 0.00  ;

16. GROSS THERMAL ENERGY GENERATED (MWH) 1102118 4651347 277704860

17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 367320 1564040 91644650

. 18. NET ELECTRICAL ENERGY GENERATED (MWH) 346480 1484377 8619S657

19. UNIT SERVICE FACTOR 94.9 98.7 85.3 j

20. UNIT AVAILABILITY FACTOR 94.9 98.7 85.3 l

21. UNIT CAPACITY FACTOR ( MDC NET) 93.9 100.5 83.4 j

22. UNIT CAPACITY FACTOR ( DER NET) 90.9 97.3 79.4

23. UNIT FORCED OUTAGE RATE O O 4.5

24. FORCED OUTAGE HOURS 0.0 0.0 8187.1

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

Refueling outage scheduled for October 15,1997, approx. 50 days. i

26. IF CURRENTLY SHUTDOWN, ESTIMATED STARTUP DATE:

N/A i

PRINTED 5/6/97 t

• . NRd. MONTHLY REPORT Page 4 DOCKET NO. 50-282 UNIT PRAIRIE ISLAND NO.1 DATE 5/6/97 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-11214376 UNIT SHUTDOWNS AND POWER REDUCTIONS ,

MONTH: APRIL 1997 DATE UNIT TYPE HOURS REASON METHOD LER NUMBER SYSTEM COMPONENT 4/13/97 i S 0 B 5 N/A N/A N/A NOTES: Turbine valve testing 4/25/97 1 S 30.4 8 2 N/A N/A N/A NOTES: AFW Pmp modification & Cond Tube Cleaning t

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IYEE REASON METHOD SYSTEM CODE l 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 RESTRlCTION 4-CONTINUED E-OPERATOR TRAINING AND 5-REDUCED LOAD COMPONENT QQQE )'

LICENSE EXAMINATION 9-OTHER IEEE STD 803A-1983 F-ADMINISTRATIVE G-OPERATIONAL ERROR H-OTHER

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PRINTED G/6/97

.. .NRC MONTHLY REPORT  ;

PageG l

< . l DOCKET NO. 50-306 .

UNIT PRAIRIE ISLAND NO. 2 -  !

! DATE 5/6/97 l COMPLETED BY DALE DUGSTAD '

TELEPHONE 612-388-1121-4376 NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE i

i MONTH: APRIL 1997 4

Daylight Savings time began on the 6th.  ;

During the first five days of April, Unit 2 was limited to less than 40% power due to the Aux Feedwater ATWS issue. Unit 2 was released from the HOLD point of 35% power on Saturday April 5th @ 2235 after receiving a Westinghouse evaluation on loss of FW ATWS. Next the unit ,

ramped up in power, completing the required physics testing for cycle 18 refueling outage. It reached 100% power on the 8th @ 0800.

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The Cooling Towers ( pumps only) were started on the 1st. The cooling tower fans were started around the 18th. ,

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l CURRENT CONTINUOUS OPERATING RUN OF 31 DAYS 4

PRINTED 5/6/97

• . NRd MONTHLY REPORT Pagic DOCKET NO. 50-306 UNIT PRAIRIE ISLAND NO. 2 DATE 5/6/97 COMPLETED BY DALE DUGSTAD i TELEPHONE 612-388-1121-4376 AVERAGE DAILY POWER LEVEL l UNIT _2 i

MONTH: APRIL 199Z DAE AVERAGE DAILY POWER LEVEL 4/1/97 151 4/2/97 151 4/3/97- 152 4/4/97 152 4/5/97 160 l 4/6/97 269 4/7/97 459 '

4/8/97 534 4/9/97 533 4/10/97 534 4/11/97 533 4/12/97 533 4/13/97 535 4/14/97 532  !

4/15/97 533 4/16/97 532 4/17/97 531  !

4/18/97 522 4/19/97 522 4/20/97 529 t 4/21/97 512 4/22/97 523 4/23/97 521 4/24/97 519 4/25/97 520 4/26/97 524 4/27/97 525 4/28/97 519 4/29/97 511 4/30/97 518 '

AVERAGE LOADS ABOVE '

512 MVE-NET ARE DUE TO COOLER CONDENSER CIRCULATING WATER l

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PRINTED 5/6/97

. NRC. MONTHLY REPORT Paga 7 DOCKET NO. 50-306 UNIT PRAIRIE ISI.AND NO. 2 1 DATE 5/6/97 j COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1121-4376 i

OPERATING DATA REPORT l i

OPERATING STATUS

1. UNIT NAME: PRAIRIE ISLAND NO.2

2. REPORTING PERIOD: APRIL 1997

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): 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): Less than 40% reactor power for five days.

10. REASONS FOR RESTRICTIONS, IF ANY: Due to AFW with loss of FW ATWS issue.

IlflS. MONTH YR-TO DATE CUMULATIVE

11. HOURS IN REPORTING PERIOD 719 2879 196005

12. NUMBER OF HOURS REACTOR CRITICAL 719.0 1383.2 172876.4

13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.00 1516.1

14. HOURS GENERATOR ON-LINE 719.0 1341.8 171386.1 i 15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.00 0.00 I

16. GROSS THERMAL ENERGY GENERATED (MWH) 1034733 1959768 272881877

17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 346140 654700 83289990 ,

18, NET ELECTRICAL ENERGY GENERATED (MWH) 325918 608909 84419683

19. UNIT SERVICE FACTOR 100 46.6 87.4

20. UNIT AVAILABILITY FACTOR 100 46.6 87.4 l 21. UNIT CAPACITY FACTOR ( MDC NET) 88.5 41.3 85.8

22. UNIT CAPACITY FACTOR ( DER NET) 85.5 39.9 81.3

23. UNIT FORCED OUTAGE RATE O 30.1 2.7

24. FORCED OUTAGE HOURS 0.0 577.2 4691.1

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

N/A

26. IF CURRENTLY SHUTDOWN, ESTIMATED STARTUP DATE:

N/A  ;

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PRINTED 5/6/97

. ,NRC MONTHLY REPORT PrgeC .

DOCKET NO. 50-306 '

UNIT PRAIRIE ISLAND NO. 2 DATE 5/IP97 COMPLETED BY DALE DUGSTAD TELEPHONE 612 388-11214376 j l

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UNIT SHUTDOWNS AND POWER REDUCTIONS MONTH: APRIL 192Z DATE UNIT TYPE HOURS REASON METHOD LER NUMBER SYSTEM COMPONENT 4/1/97 2 F 0 D 4 1 97-003 NOTES: AFW A1WS issue limited unit to less than 40% pwr for the first 5 days.

4/5/97 2 S 0 C 4 N/A N/A N/A NOTES: Ramp up to full power operation from cycle 18 refueling outage.

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4 IYEE BEASQN MCIBQQ 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-CPERATOR TRAINING AND 5-REDUCEO LOAD COMPONENT CODE LICENSE EXAMINATION 9-OTHER IEEE STD 803A-1983 F-ADMINISTRATIVE G-OPERATIONAL ERROR )

H-OTHER