ML20050C830

Monthly Operating Repts for June 1981

ML20050C830
Person / Time
Site:	Prairie Island
Issue date:	07/01/1981
From:	Hunstad A NORTHERN STATES POWER CO.
To:
Shared Package
ML20050C827	List: ML20050C826 ML20050C830
References
NUDOCS 8204090391
Download: ML20050C830 (7)

Text

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o NARRATIVE

SUMMARY

OF OPERATING EXPERIF.NCE DOCKET NO. 50- 282 UNIT Prairie Island No.1-DATE 810701 COMPLETED BY A. A. Hunstad TELEPHONE 612-388-1121 JUNE 1981 MONTH The unit was base loaded this month except for power reductions g

h taken on June 6 6 7 for condenser cleaning.

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8204090391 810714 PDR ADOCK 05000282 R

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DAILY UNIT POWER OUTPUT DOCKET NO. 50- 282 UNIT Prairie Island No.1 DATE 810701 COMPLETED BY A. A. Hunstad TELEPHONE 612-388-1121 MONTH JUNE 1981 IM AVERAGE LOAD FNc-Net DAY AVERAGE LOAD FNc-Net

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1 496 17 499 x

2 493 18 500 j

!3 19 502 3

498

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4 494 20 501 5

495 21 503 6

335 22 500 7

346 23 497 8

499 24 493 9

502 25 499 10 469 26 495 11 499 27 494 12 498 28 489 492 13 493 29 492 14 493 30 15 498 31 16 495 Average loads above 503 Ne-Net are due to cooler condenser circulating water.

OPERATING DATA REPORT o

DOCKET No 50- 282 DATE~ 8107(Tl COMPLETED BY A. A. Ilunstad OPERATING STATUS TELEPIIONE 612-38S-1121 1.

Unit Name:

Prairie Island No.1 JUNE 1981 Notes 2.

Reporting Period:

3.

Licensed Thermal Power (FMt):

1650 l

4.

Nameplate Rating (Gross lNe):

593 S.

Design Electrical Rating (Net FNe):

530 l

l 6.

Pfaximum Dependable Capacity (Gross FNe):

534 l

ej 7.

!!aximum Dependable Capacity (Net FNe):

503 g

8.

If Changes Occur in Capacity Ratings (Items Numb'er 3 Through 7) Since Last Report:

Give Reason:

9.

Power Level To Which Restricted, If Any (Net FNe):

2 10.

Reasont-for Restrictions, If Any:

This Month Yr-To-Date Conulative 11.

11ours In Reporting Period 720 4343 66095 12.

Number Of flours Reactor Was Critical 720.0 4343.0 52510.1 13.

Reactor Reserve Shutdown Hours 0.0 0.0 5538.1 14 Hours Generator On Line 720.0 4343.0 51333.6 15.

Unit Reserve Shutdown liours 0.0 0.0 0.0 16.

Gross Thermal Energy Generated (FMI) 1155660 7065234 79785915 17.

Gross Electrical Energy Generated (FNil) 375260 23282;0 25809720 18.

Net Electrical Energy Generated (FMI) 349410 2187211 24132818 19.

Unit Service Factor 100.0 100.0 77.7 20.

Unit Availability Factor 100.0 100.0 77.7 21.

Unit Capacity Factor (Using MDC Net) 96.5 100.1 72.6 22.

Unit Capacity Factor (Using DER Net) 91.6 95.0 68.9 23.

Unit Forced Outage Rate 0.0 0.0 11.3 24.

Shutdowns Scheduled Over Next 12 !!anths (Type, Date and Duration of Each):

Refueling September 1981, 6 weeks 25.

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

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NARRATIVE

SUMMARY

OP OPERATING EXPERIENCE DOCKET No. 50 306 UNIT Prairie Island No.2.

DATE 610701 COMPLETED BY A. A. Hunstad TELEPHONE 612-388-1121 MONTit JUNE 1981 The unit was base loaded this month until June 11, when

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increasing seal leakoff flow and increasing vibration were seen on No. 21 Reactor Coolant Pump.

The unit was shut down at 2230. The increased vibration was not eliminated by balancing g

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so the pump will be decontaminated, dissassembled and inspected.

3

DAILY UNIT PO*JER OUTPUT DOCKET NO. 50- 306 UNIT Prairie Island No. 2 DATE 810701 COMPLETED BY A. A. Hunstad TELEPHONE 612-388-1121 MONTil JUNE 1981 DE AVERAGE LOAD MWe-Net DAY AVERAGE LOAD MWe-Net 1

496 17

-4 E

2 495 18

-4 1.

3 499 19

-3

~

E 5

4 493 20

-3 c.

5 495 21

-3 6

504 22

-3 7

500 23

-3 8

498 24

-3 9

500 25

-3 10 493 26

-3 11 453 27

-3

-3

-Il 28 12

-3

-6 29 13

-3

-6 30 14 15

-11 31 16

-5 Average loads above 500 !L'e-Net are due to cooler condenser circulating water.

OPERATING DATA REPORT e

DOCKET NO 50 306 DATE 810701 COMPLETED BY A. A. Hunstad OPERATING STATUS TELEPHONE 612-388-1121 1.

Unit Name:

Prairie Island No. 2 N tes 2.

Reporting Period:

Iggg_193J 3.

Licensed Thernal Power (MWt):

1650 4.

Nameplate Rating (Gross MWe):

593 5.

Design Electrical Rating (Net MWe):

530 6.

Maximum Dependable Capacity (Gross MWe):

531 i

500 e

7.

Maximum Dependable Capacity (Net MWe):

j 8.

g If Changes occur in Capacity Ratings t.tems Number 3 Through 7) Since Last Report:

E Give Reason:

E 9.

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

,o-10.

Reasons for Restrictions, If Any:

This Month Yr-To-Date Cunulative 11.

Hours In Reporting Period 720 4343 57213 12.

Number Of Hours Reactor Was Critical 262.5 2777.4 49159.2 13.

Reactor Reserve Shutdown Hours 0.0 0.0 1508.0 14.

Hours Generator On Line 262.5 2740.2 48311.1 15.

Unit Reserve Shutdown Hours 0.0 0.0 0.0 16.

Gross Thermal Energy Generated (MWH) 431323 4408796 75507786 17.

Gross Electrical Energy Generated (MWH) 138660 1427330 24166270 18.

Net Electrical Energy Generated (MWH) 128162 1334985 22642888 19.

Unit Service Factor 36.5 63.1 84.4 20.

Unit Availab!11ty Factor 36.5 63.1 84.4 21.

Unit Capacity Factor (Using MDC Net) 35.6 61.5 79.2 22.

Unit Capacity Factor (Using DER Net) 33.6 58.0 74.7 23.

Unit Forced Outage Rate 63.5 15.2 4.9 24.

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

Refueling, Spring 1982, 6 weeks 25.

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

810731

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UNIT SIRITDOWNS AND POWER REDUCTIONS i

DOCKET NO.

50-306 REPoltT MONTil JUNE 1981 UNIT NAME Prai-le Island No.

2 I

DATE 810701 COMPLETED BY A. A. Hunstad 1

TELEP110NE 612-388-1121 ec1 Licensee eo u

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m Cause & Corrective l

Date E.

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Event En Action to N

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Prevent Recurrence l

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810711 F

457.5 B

1 N/A N/A N/A Shutdown to investigate

'i increased vibration and seal leakoff flow on No. 21 RCP.

I i3 Investigation is in progress.

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1 9

3 4

l'. Forced

' Reason Method:

Exhibit G-In-S: Schediiled A-Equipment Fatlure(Explain) 1-Manual structions for j

it-Maintenance or Test 2-Manual Trip Preparation of C-Refueling 3-Automatic Trip Data Entry Sheets D-Regulatory Kentriction 4-OLher (Explain) for Licensee Event l

C-Operator Traisiing 6 I.icense Examination Report (i.ER) File I

F-Administrative (NllREG-0161)

G-Operation:al I rror (Explain) ll-Ot her ( E::pl a t a Exhibit t - Same Source

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