ML20199C895

Monthly Operating Repts for Dec 1998 for Dnps,Units 1,2 & 3

ML20199C895
Person / Time
Site:	Dresden
Issue date:	12/31/1998
From:	Butterfield S COMMONWEALTH EDISON CO.
To:
Shared Package
ML20199C888	List: ML20199C885 ML20199C895
References
NUDOCS 9901190185
Download: ML20199C895 (10)

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MONTHLY NRC

SUMMARY

OF OPERATING EXPERIENCE, PER REGULATORY GUIDE 1.16 FOR DRESDEN NUCLEAR POWER STATION COMMONWEALTH EDISON COMPANY FOR DECEMBER 1998 UNIT DOCKET LICENSE 1 050-010 DPR-2 2 050-237 DPR-19 3 050-249 DPR-25 9901190185 990111 ~

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l TABLE OF CCNTENTS j i.

I DECEMBER 1998 NRC REPORT 1.0 Introduction 1

2.0 Summary of Operating Experience I 2 .1- Unit-2 Monthly Operating Experience Summary.  !

2.2- Unit 3 Monthly Operating Experience Summary.

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3.0 Operating Data Statistics

3.1 Operating Data Report - Dresden Unit 2 3.2 Operating Data Report - Dresden Unit 3 3.3 Unit 2 Shutdowns 3.4 Unit 3 Shutdowns 4.0 Unique Reporting Requirements i

4.1 Main Steam Relief and/or Safety Valve Operations - '

Unit 2 and Unit 3 4.2' Technical Specification Amendments t

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t l 1.0 Introduction

Dresden Nuclear Power Station is a three reactor l generating facility owned and operated by the Comed Company of Chicago, Illinois. Dresden Station is located at the confluence of the Kankakee and Des Plaines Rivers, in Grundy County, near Morris, Illinois.

Dresden Unit 1 is a General Electric Boiling Water i Reactor with a design net electrical output rating of 200 megawatts electrical (MWe). The unit is being decommissioned with all nuclear fuel removed from the

! reactor vessel. Therefore, no Unit 1 operating data is provided in this report.

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Dresden Units 2 and 3 are General Electric Boiling Water Reactors; each licensed at 2527 megawatts L thermal. The gross outputs of Units 2 and 3 are 832

( and 834 megawatts electrical, respectively, with design net electrical output ratings of 794 MWe each. The commercial service date for Unit 2 is 11 August 1970 and 30 October 1971 for Unit 3.

Waste heat is rejected to a man-made cooling lake using the Kankakee River for make-up and the Illinois River for blowdown.

l The Architect-Engineer for Dresden Units 2 and 3 was Sargent and Lundy of Chicago, Illinois.

Sherry Butterfield of Dresden Regulatory Assurance

Staff compiled this report for December 1998, telephone number (815) 942-2920, extension 2959.

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2.0

SUMMARY

OF OPERATING EXPERIENCE FOR DECEMBER 1998 2.1 UNIT 2 MONTHLY OPERATING EXPERIENCE

SUMMARY

Unit 2 operated throughout the period at full power except for short periods for surveillance and maintenance.

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2.0

SUMMARY

OF OPERATING EXPERIENCE FOR DECEMBER 1998 2.2 UNIT 3 MONTHLY OPERATING EXPERIENCE

SUMMARY

l l Unit 3 operated throughout the period at full i power except for short periods for surveillance and maintenance.

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l 3.0. OPERATING DATA STATISTICS l 3.1 OPERATING DATA REPORT - DRESDEN UNIT TWO DOCKET No. 050-237 l l DATE January 6, 1998 COMPLETED BY Sherry Butterfield  !

TELEPHONE (815) 942-2920 OPERATING STATUS l

1. REPORTING PERIOD: December 1998 l 2. CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,527 l

MAXIMUM DEPENDABLE CAPACITY (MWe NET) : 772 DESIGN ELECTRICAL RATING (MWe Net) : 794

3. POWER LEVEL TO WHICH RESTRICTED (MWe Net) : No l restrictions

4. REASONS FOR RESTRICTIONS (IF ANY): See Section 2.1 of this report.

! I FERRI 1M3RHG)[MTA

[ FWME11R THSMENM M54RTO[ RTE QJMULATME 5 InBS IN IERED 744 8,7 60 248,850 0 TDE IUCKR GrITX. 744 7,613 182,622 l 7 TDE IUCKR IEERVE !HRDON Obrs) O C C 8 TDE GN!NGER OFLDE (thms) 744 7,4 95 174,275 9 TRE GN!NGER IEEEE !HRDON Obrs) 0 3 4 j 1C 'DERAL DERE GN!NCI!D @Mtt Gtees) 1,862,438 18,160,642 367,924,065 )

11 nnmucat.maar etevmio eseHe (koss) 609,556 5,897,901 117,C31,73E  ;

l 12 MN I!N!RE GN!NG!D 04EHe Met) 584,119 5,632,858 111,313,033 13 IUCKR SERVICE DCKR (%) 100.04 86.9 73.44 14 IUCKR NAIIABILITI DCKR (%) 100.04 86.9 73.4' 15 GNHRPGCR SERVICE DCKR (%) 100.0'- 85.6: 70.0 I 16 GN!NUtR AVAIIABLILTIY DCKR (%) 100.0; 85.6; 70.0 17 GeCITI DCKR (Gung !G Met) (%) 101.79 83.3s 57.9 18 CNFCITI DCKR (Gung IER Net) (%) 98.9- 81.0 56.3' 19 KR3!D CIRNE DCItR (%) 01 3.4- 12.41 l

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3.0 OPERATING DATA STAT:'.STICS 3.2 OPERATING DATA REPORT - DRESDEN UNIT THREE l

DOCKET No. 050-249 '

DATE January 6,1998

! COMPLETED BY S. Butterfield l l TELEPHONE (8'5) 942-2920 '

I OPERATING STATUS j

1. REPORTING PERIOD: December 1998

2. CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,527 .

MAXIMUM DEPENDABLE CAPACITY (MWe Net): 773

'ESIGN ELECTRICAL RATING (MWe Net): 794 i

! 3. POWER LEVEL TO WHICH RESTRICTED: No restriction 1

! 4. REASONS FOR RESTRICTIONS (IF ANY): See Section 2.2 of l this report.

REPORTINGPERODIMTA j PARAMi: TER THS MONTH YEARTODE OJMLLA7WE i

5 InBS IN PERICD 744 8,760 238,17C l 6 TIMs IEACIER CRITICAL 744 8,254 170,195 7 TDE IEACIIR RESERVE SEU2D:M (Hours) 0 0 C l 8 TDE GNERAltR CN-LDE (Hours) 744 8,157 162,581 l i

' 1 9 TDE G2ERAltR RESERVE SIUIDOW (&urs) 0 1 1

( 10 UElemL DEMY G2 ERA:5D 04Et Gross) 1,863,967 20,047,452 343,252,425 11 zuacmHX INERGY MENUMD 0+ese acess) 609,842 6,490,644 109,978,803 12 ELECIRICAL ENERGY G2ERAIED 04EHe Net) 587,152 6,234,591 104,341,50E 13 REACIIR SERVIG FACICR (%) 100.0i 94.21 71.54 14 REACTER AVAIIABILITY FACIIR (%) 100.07 94.2V 71.59 15 G2ERAICR SERVIG FAC1tR (%) 100.01 93.lt 68.3 l l 16 GENERAltR AVAIIARrRTTY DCitR (%) 100.0i 93.1Y 68.34 17 CAPACITY DCIER (Usirq MD Net) (%) 102.24 92.2) 56.75 i8 CAPACITY FACIER (Usirq MR Net) (%) 99.4i 89.67 55.2, 19 , FCB3D CIR: AGE: FACitR (%) 0.0t 3.24 13.9i I

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3 UNIT 2 SHUTDOWNS I l

REPORT MONTH OF DECEMBER 1998 NO DATE TYl'E DURATION FE iLON M.:THOD OF' ' NA'l l'd (1) (HOURS)* (2 GH!1TTINc; ACTION 3/

pg,WN CrIMMENTS REACTOR (3) l Year-to date forced outage hours = 263 Cumulative forced outage hours = 24691 TABLE KEY: l (1) (3)

F: Forced Method:

S: Scheduled 1. Manual '

2. Manual Scram (2) Reason: 3. Automatic Scram i A Equipment Failure (Explain) 4. Other (Explain) !

B Maintenance or Test 5. Load Reduction C Refueling D Regulatory Restriction j E Operator Training & )

Licensing Exam l F Administrative  !

G Operational Error i H Other (Explain) I l

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3.4 UNIT 3 SHUTDOWNS REPORT MONTH DECEMBER 1998 NO DATE TY i E l l .) DURATION REASON (2) METHOD OF CORRECTIVE (HOURS)* SHilTTING A'!T I ON3 /

ICWTJ O MiENTS REACTOR (3)

Year-to-date forced outage hours = 272 Cumulative forced outage hours = 26,212 TABLE KEY:

(1) (3)

F: Forced Method:

S: Scheduled 1. Manual

2. Manual Scram (2) 3. Automatic Scram Reason: 4. Other (Explain)

A Equipment Failure 5. Load Reduction (Explain)

B Maintenance or Test C Refueling D Regulatory Restriction E Operator Training &

Licensing Exam F Administrative G Operational Error H Other (Explain) 9

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• l 4.0 UNIQUE REPORTING REQUIREMENTS 4.1 MAIN STEAM RELIEF AND/OR SAFETY VALVE OPERATIONS -

UNIT 2 - NONE UNIT 3 - NONE 4.2 Technical Specification Amendments Technical Specification Amendments 169 and 164, issued on October 8, 1998, for Dresden Nuclear Power Station Units 2 and 3 respectively, were implemented December 7, 1998 to correct non-conservative values.

Specifically, the battery electrolyte minimum temperature was raised from 60 F to 65 F. The minimum control rod drive accumulator pressure was raised from 800 to >940 Psig. The sodium pentaborate temperature versus saturation temperature curve was revised to provide a 10 F margin to the saturation temperature.

The minimum river water level was raised to ensure adequate net positive suction head for various emergency pumps.

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