ML20071A466

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Monthly Operating Repts for Mar 1991 for Prairie Island Nuclear Generating Plant
ML20071A466
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 03/31/1991
From: Dugstad D, Parker T
NORTHERN STATES POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9104160225
Download: ML20071A466 (9)
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.. Northem States Power Company 414 Nicollet Mall Minneapolis. Minnesota 55401 1927 Telephone (612) 3'30 5500 April 10, 19^1 Prairie Island Technical-Specificacions Section 6.7.A.3 US Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket No. 50 282 License No. DPR-42 50-306 DPR 60 Monthly Operating Report March. 1991 Attached is the Monthly Operating Report for March,1991 for the Prairie Island *Generatin6 Plant,

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/M ty Thomas M Parker Manager Nuclear Support Service TMP/Jik

-C: aDirectorf;70fficf4ofiResource! Management' Regl' anal' Adsihid EWtor-III,' 'NRC '

NRR Project Manage r, NRC NRC Resident Inspector MPCA AcMn: J W Ferman Attachment l-9104160225 910331

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l neb 8611VE..IUdtie8Y_QE_0EEEGIING EXEE81EdCE i

DOCKET No. 50-282 i

NIT PRAIRIE ISLAND U0.1, DATE APRIL 2, 1991 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1121-4376 dONIU;. deBCH__ _ _1221 .. '

THE UNIT WAS BASE LOADED THIS MONTH, THERE WERE NO SHUTDOWNS DURING THE WEEK OF THE SEVENTEENTH IT WAS OBSERVED THAT THE MWE QUIPUT OF THE UNIT WAS SLOWLY DECREASINO, CONDENSER TUB; PLUGGING WAS SUSPECTED. ON THE TWENTY SECOND f.T 2100 A POWER REDUCTIuc 'De STAhTED TO ALLOW INSPECTION OF THE CONDENS?.R OUTER PASS WATER E0X, G WAS DISCOVERED THAT THE PROBLEM WAS DUE To Ayr INTrJPMENT AT TH'; TOP OF THE WATER BOX. REPAIRS WERE MADE TO THE W,siER 50X AM EJECTOR SYSTEM. THE UNIT STAitTED TO RAMP UP AT 1532 0F THE TWTY FOURTH ANO REACHED FULL POWER OPERATION AT 2225. THERE WERE NO OTHER REDUCTIONS, CURRENT CONTINUOUS OPERATING RUN OF 129 DAYS.

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L EVE 86GE_DGILY_UNII EQWE8. LEVEL DOCKET NO. 50-280 UNIT-PRAIRIE = ISLAND UQ.1_

DATE APRIL 2, 1991 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-4121-4376 bONIU;_de8CH____ 1221 _

DeX OVEReGE DGILY_EQWEB_L EMEL_IdWE:UEIl i 52G 2 529  !

3 527 4 529 5- 529 6 528 7 528 8 528 v, 9 52o 10 527 ii 523 1.1 532 13 527

.14 529 15 529 ~

16 527 17 528-18 326 19 528 20 524~

21 .~ !22 _

f 22- 514 23' 191 24 249 25 528 26 524.

'27 531 28 526 29 SM 30~ 524 31 523 AVERAGE LOADS ABOVE 5Q3 MWE-NET ARE DUE .

TO COOLER CONDENSER CIRCULATING WATER

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DOCKET NO.30-202 UNIT PRAIRIE ISLAND SQ i_  !

DATE APRIL 2, 1991 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1121-4376 QEEEeIING_SIeIUS

1. UNIT NAME: EEelEIE_IILeUQ_UQ._1
2. PEPORTING PERIOD:_deBC8_____._1281___
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). 534
7. MAXIMUM DEPENDABLE CAPACITY (NET MWE) 503
6. IF-CHANGES OCCUR IN CAPACITY RATINGS (ITEMS NUMBER 3 THROUGH 7)

SINCE LAST REPORT GIVE REASON: NONE_______________________________

9. POWER LEVEL TO WHICH RESTRICTED, IF ANY (NET MWE). _UQUE_..____________
10. REASONS F0r6 RESTRICTIONS, IF ANY:__UQUE_______________________________

IUII_dQUIU YB:IO:D6IE CudULeIIVE

'11. HOURS IN REPORTING PERIOD 744 2160 151560 Li'2. NUMBER OF HOURS REACTCR WAS CRITICAL 744.0 2160.0 129119.9 13.-REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 5571.1 14 HOURS GENERATOR ON-LINE 744.0 2160.0 127572.7

15. UNIT RESERVE SHUTDOWN HOURS 0.0 0.0 0.0
16. GROSS THERMAL' ENERGY GENERATED (MWH) 1182625 3509322 201171476
17. GROSS ELECTRICAL ENERGY GENERATED (MWH) 397030 1181450 66044360
10. NET ELECTRICAL ENERGY GENERATED (MWH) 377131 1123802 62006813 19.. UNIT SERVICE FACTOR . 100.0 100.0 84.2

~2 0 . UNIT AVAILABILITY' FACTOR 100.0 100.0 84.2.

21.-UNIT CAPACITY FACTOR (USING MDC NET) 100-.0 103.4 81.3
22. UNIT CAPACITY FACTOR (USING DER NET) 95.6 98.2 77.2
23. UNIT 1 FORCED OUTAGE RATE 0.0 0.0 5.6
24. FORCED OUTAGE HOURS 0.0 0.0 7540.3 l25. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE & DURATION OF EACH).

___SEEUELING_eUD_deIBIENeNCE_QUIeGE_.EIeEIING_QU JUNE _S._EQE_2d_DeYS. __.

26. IFLCURRENTLY SHUTDOWN ESTIMATED STARTUP DATE:_____.,___Ule______.._______

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4 UNII_SHUIDOWUS_edD_E0WES EEDUCI100 1

DOCKET NO 50-282  !

UNIT NAME EBeIBIE ISLeUD_UO. 1 DATE eCRIL_2._1221_____

COMPLETED BY DELE _DUGSIAD__ ___

TELEPHONE 612-386-1121 t1326 d0UIB;..deRCB 1221 .

. DeIE IYEE UQUBS- BEeSON dEIUQD LE8_UUdBEB SYSIEd CQdEQUENI YY/MM/DD 000.0 91/03/22 F 0.0 A 5 N/A SH EJR AIR ENTRAPMENT IN CONDENSER WATER BOX DUE TO WATER BOX AIR EJECTOR PROBLEM. 1 w ,

IYEE BEGSQU dEIBOD SYSIEd_ CODE l

h -F-FOPCED A-EQUIPMENT FAILURE i-MANUAL DRAFT IEEE S'D l S-SCHED B-MAINTENANCE OR TEST 2-MANUAL TRIP 805-1984 ( P90'J-D5 )

l. C--REFUELING 3-AUTO TRIP l

D-REGULATORY RESTRICTION 4-CONTINUED

j. E-OPERATOR TRAINING & 5-REDUCED LOAD C0dEQUEUI CODE l LICENSE EXAMINATION 9 0THER l F-ADMINISTRATIVE IEEE STD 003A-1983 l G-OPERATIONAL ERROR j l H-0THER l i l l

NeRRaIIVE_SuddsRY_QE_0EER6IIUG_E%EERIENCE DOCKET NO. 50-306 UNIT PRAIRIE IJLAND NO 2_

DATE APRIL 2, 1991 COMPLETED BY DALE DUGSTAD TELEPHONE 412-38G-1121-43T6 d QUIU1_d O EC H _.._ _ _ _1221_ _ '

THE UNIT WAS BASE LOADED ThIS MONTH, THERE WERE NO SHUTDOWNS.

ON THE FIRST AT 2318 REACTOR POWER WAS REDUCED , TO 97% POWER SO THAT THE UNIT WOULD NOT EXCEED CORE PEAKING FACTORS (FQ) AS REQUIRED BY TECHNICAL SPECIFICATIONS. THIS DERATE CONTINUED FOR THE ENTIRE MONTH.

ON THE TENTH AT 0600 POWER WAS REDUCED TO 92% TO ALLOW REPAIRS TO 25A FEEDWATER HEATER. A STEAM LEAK OF THE RELIEF VALVE FLANGE HAD DEVELOPED. REPAIRS WERE COMPLETED BY 1214 0F THE TWELFTH AND THE UNIT RETURNED TO 9?% POWER OPERATION BY 1300.

THERE WERE NO-0THER REDUCTIONS.

.. COOLING TOWERS NUMBERS 122, 123 AND'124 WERE PLACED INTO OPERATION

'DURING THE LAST WEEK OF THIS MONTH. TOWER 121 WILL BE STARTED WHEN REPAIRS-ARE-COMPLETED.

l CURRENT CONTINU0US OPERATING Rl/N OF 060 DAYS.

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eVEB6GE_DGILL.UNII EDWER_ LEVEL DOCKET NO. 50-3Q6-UNIT PRAIRIE ISLAND 80.2.

DATE APRIL 2, 1991 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1121-4376 tl0HIB.i_daECU_ ___ 1221-_

DeX EYE 86GE_DeILY EQWES LEVEL.1LiWE:UEIl 1 525 2 511 3 510 4 511 5 510 6L Sii 7 511 0 511

% 9 512 10 492 11 500 12 506 13 510 14 511 15 511 16 Sii i7 510 18 Sii 19 510 20 ^ 509 21 508 22 509 23 508 24 508 25 509 26 512 27 502 28 509 27 507

.30 508 31 506 AVERAGE LOADS ABOVE 500 MWE-NET ARE DUE l TO COOLER CONDENSER CIRCULATING WATER l

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QEEBoIIUG_DeIe_BEEQEI DOCKET NO. liQ-306 UNIT PRAIRIE ISLAND 80.2 DATE APRIL 2, 1991 COMPLETED BY DALE DUGSTAD TELEPHONE 612-388-1421-4376 QEEReIING_IIeIUS '

i. UNIT NAME: EBalB;,E_ISLGUD UO _.2
2. REPORTING PERIOD: NRCU_ _ 12?i ._

.3, LICENSED THERMAL POWER (MWT). 1650

4. NAMEPLATE RATING (GROSS MWE)' 593
5. DESIGN ELECTRICAL RATING (NET MWE) 530
6. MAXIMUM DEPENDADLE CAPACITY (GRGSS MWE)' 531

-7. MAXIMUM DEPENDABLE CAPACITY (NET MWE) 500 0.-IF CHANGES OCCUR IN CAPACITY RATINGS (ITEMS NUMBER 3 THROUGH 7)

SINCE LAST REPORT GIVE REASON:__UQNE____ _.. __ ___ ____ . . .

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9. EUU5k'L5 VEL,"YU~U5YU5"RESYRIETEDIliEAU9"IsE ~5UE')T.~.[UQU5 2_S[_^.".[.~.7__~((
10. REASONS FOR RESTRICTIONS. IF ANY: _UQUE ____ ___ _ __ ____ .

IUIS_dQUIU YE IQ:DeIE CUMULeIIVE

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HOURS IN REPORTING PERIOD 744 2160 142678

12. NUMBER OF HOURS REACTOR WAS CRITICAL 744.0 2160.0 125847.4
13. REACTOR RESERVE SHUTDOWN HOURS 0.0 0.0 1516.1

'i4. HOURS GENERATOR ON-LINE 744.0 2160.0 124531.5

15. . UNIT RESERVE SHUTDOWN F . 'RS 0.0 0.0 0.0 i 6. GROSS THERMAL ENERGY GL.lERATED (MWH) 1180217 3515792 196982790
17. GROS 2 ELECTRICAL ENERGY GENERATED (MWH) 398210 1178970 63958380 f
18. NET ELECTRICAL ENERGY GENERATED (MWH) 378723 1122661 60404152 f
19. UNIT SERVICE FACTOR 100.0 100.0 87.3 l
20. UNIT AVAILABILITY FACTOR 100.0 100.0 87.3
21. UNIT CAPACITY FACTOR (USING MDC NET) ' si . 8 104.0 84.8

'22. UNIT CAPACITY FACTOR (USING DER NET) 96.0 98.1 80.0

23. UNIT FORCED OUTAGE RATE 0.0 0.0 3.1
24. FORCED'0UTAGE HOURS 0.0 0.0 3964.0
25. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE & DURATION OF EACH)

_____________________________UZe_______________________________________

26. IF CURRENTLY SHUTDOWN ESTIMATED STARTUP DATE.:._______NZe_._______ __ __

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UUlI_SUUIDOWUE_eUD_CQWEE BEDUCIl0B DOCKET NO S0-206..

UNIT NAME E86IGIE 15LGUD UQ _2 D ATE AESIL_2._1221_____

COMPLETED BY DELE DUGEIGD __ _

TELEPHONE 612-383-1101-d326 tiOUIth beRCH __ __122i__ _ _

DeIE TYEE UQUBE REeSQU 2 L 3_dUdBEE SYSIEd CQdEQUEUI \

YY/MM/DD 000.0 91/03/01 F 0.0 F 5 N/A N/A N/A CORE PEAKING FACTORS (FQ). REDUCTION OF 3% LASTED ALL MONTH.

91/03/10 S 0.0 A S N/A SJ HX 25A FEEDWATER HEATER RELIEF' VALVE FLANGE STEAM LEAK.

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IXEE BEGION dEIBQD SXIIEd_CQDE F-FORCED A-EQUIPMENT FAILURE i-MANUAL DRAFT IEEE STD S-SCHED B -MAINTENANCE OR TEST 2-MANUAL TRIP 905-1984(P805-D5)

C-REFUELING 3-AUTO TRIP s 0-REGULATORY RESTRICTION 4-CONTINUED E-OPERATOR TRAININC & 5-RL )UCED LOAD CQdBONENI CQDE LICENSE EX A,iT! TION 9-0THER F-ADMINISTRATIVE IEEE STD 803A-i?G3

% G-OPERATIONAL ERROR

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