ML20216E253

Monthly Operating Repts for Feb 1998 for Dresden Nuclear Power Station

ML20216E253
Person / Time
Site:	Dresden
Issue date:	02/28/1998
From:	Abrell G, Heffley J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
JMHLTR-#98-0067, JMHLTR-#98-67, NUDOCS 9803170452
Download: ML20216E253 (11)

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Commonwcalth thon Company Dresden Generating St.ition 65no North Dresden Road Morris. II. 60 i50

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March 9,1998 JMHLTR: #98-0067 U. S. Nuclear Regulatory Commissiori ATTN: Document Control Desk Washington, DC 20555

Subject:

Monthly Operating Data Report for February 1998 Dresden Nuclear Power Station Commonwealth Edison Company Docket Nos.50-010,50-237, and 50-249 Enclosed is the Dresden Nuclear Power Station Monthly Operating Summary Report for February 1998.

1 This information is supplied to your 05ce as required by Technical Specification 6.9. A.5, in accordance with the instructions set forth in Regulatory Guide 1.16. and Generic Letter

/ 97-02.

Sincerely, l J

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e Vice Pre. dent Dresden Statio Enclosure cc: hRC Region Ill 05ce i

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Illinois Dept. of Nuclear Safety, State ofIllinois NRC Senior Resident Inspector, Dresden Station UDI, Inc. - WasWgton, DC .

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SUMMARY

OF OPERATING EXPERIENCE, PER REGULATORY GUIDE 1.16 FOR  !

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DRESDEN NUCLEAR POWER STATION

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TABLE OF CONTENTS FEBRUARY 1998 NRC REPORT 1.0 Introduction 2.0 Summary of Operating Experience 2.1 Unit 2 Monthly Operating Experience Summary.

2.2 Unit 3 Monthly Operating Experience Summary.

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 Shttdowns 4.0 Unique Reporting Requirements 4.1 Main Steam Relief and/or Safety Valve Operations -

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

Dresden Unit 1 is a General Electric Boiling Water Reactor with a design net electrical output rating of 200 megawatts electrical (MWe). The unit is being decommissioned with all nuclear t l removed from the reactor vessel. Therefore, no Unit 1 operating data is provided in this report.

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

and 834 megawatts electrical, respectively, with dcsign 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 I for blowdown.

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

This report for FEBRUARY 1998, was compiled by 'ry A.

Abrell of Dresden Regulatory Assurance Staff, telephone number (815) 942-2920, extension 3749.

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2.0

SUMMARY

OF OPERATING EXPERIENCE FOR FEBRUARY 1998 2.1 UNIT 2 MONTHLY OPERATING EXPERIENCE SUMMiRY Unit 2 began the period near full power. At 2200 on February 7, 1998, commenced load drop to 300 MWE for a drywell entry. On February 8, 1998, entered.drywell and isolated a Reactor Buildinif Closed Cooling Water leak on a drywell cooler. At '

1600 on February 8, began load increase following completion of the drywell entry.

At 1726 on 10 February 1998, the unit returned to full power and remained at that level for the  !

remainder of the pe 'od except for minor load  !

reductions for maintenance and surveillance activity.

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SUMMARY

OF OPERATING EXPERIENCE FOR FEBRUARY 1998 2.2 UNIT 3 MONTHLY PERATING EXPERIENCE SGTHARY Unit 3 began the period near full power and operated at that level until February 28, 1998 except for brief load reductions for maintenance

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and surveillance testing.

At 0000 on February'28, 1998 commenced load drop for single loop operation to change brushes on the Recirculating System Motor Generators. Secured 3A Recirculating Pump and Motor Generator for brush replacement at 1208. Restarted 3A Recirculating  !

Pump at 1420. At 1705 secured 3B Recirculating Pump and Motor Generator for brush replacement.

At 1910 the 3B Recirculating Pump failed to start.

i At 0132 on March 1, 1998, the 3B Recirculating '

Pump was restarted following a reduction in the oil temperature.

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l 3,0 OPERATING DATA STATISTICS 3.1 OPERATING DATA REPORT - DRESDEN UNIT TWO DOCKET No. 0E0-237 DATE March, 1998 H COMPLETED BY G. A. ABRELL TELEPHONE (815) 942-2920 OPE" TING STATUS

1. REPORTING PERIOD: FEBRUARY 1998

2. CURRENTLY AUTHORIZED POWER LEVEL (MWth) : 2,527 MAXIMUM DEPENDABLE CAPACITY (MWe NET): 772 DESIGN ELECTRICAL RATING (MWe Net): 794

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

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

{ REPORTING PERIOD DATA ll PAPAMET ER THIS MONTH YEAR TO DATE . CUMULATIVE i

5 HOURS It' MRIOD 672 1,416 241,512 I i 6 TITE RFJ.CTOA CRITICAL

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672 1,327 176.335  !

• / TIME REACTOR RESERVE SHUTDO)C4 (Hours) 0 C C 6 TIME GENERATOR ON-LINE (Hours) 672 1,311 168,065 9 I1ME GENERATOR KESERVE SHUTDOWN (Hours) 0 C 1 10 THERMAL ENERGY GENERATED (MWHt Gross) 1,640,56C 3,077,152 352,840,571 11 ELECTRICAL ENERGY GENERATED (MWEHe Gross) 535,476 1,003,665 112,737,50C

! 12 ELECTRICAL ENERGY GENERATED (MWEHe Net) 513,006 960,399 106,640,574 13 REACTOR SERVICE FACTOR (%) 100.0% 93.7% 73.0%

14 REACTOR AVAILABILITY FACTOR (%) 100.0% 93.7% 73.Os 15 GENERATOR SERVICE FACTOR (%) 100.O% 92.61 69.61 16 GENERATOR AVAILABLILITY FACTOR (%) 100.0% 92.6% 69.6%

, 17 CAPACITY FACTOR (Using MCD Net) (%) 98.94 87.94 57.2%

18 CAPACITY FACTOR (Using DER Net) (%) 96. i s 85.4% 55.64 19 FORCED OUTAGE FACTOR (4) 0% 7.44 12.7%

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3.0 OPERATING DATA STATISTICS 3.2 OPERATING DATA REPORT - DRESDEN UNIT THREE DOCKET No. 050-249 DATE March 4,1998 COMPLETED BY G. A. ABRELL TELEPHONE (815) 942-292C OPERATING STATUS

1. REPORTING PERIOD: FEBRUARY 1998

2. CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,527 MAXIMUM DEPENDABLE CAPACITY (MWe Net): 773 DESIGN ELECTRICAL RATING (MWe Net) : 794

3. POWER LEVEL TO WHICH RESTRICTED: No restriction

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

REPORTING PERIOD DATA PARAMETER THIS MONTH YEAR TO DATE CUMULATIVE HOURS IN PERIOD 672 1,416 230,832 TIME REACTOR CRITICAL 672 1416 163,357 TIME REACTOR RESERVE SHUTDOWN (Hours) 0 0 0 ;

TIME GENERATOR ON-LINE (Hours) 672 1,416 155,840 TIME GENERATOR RESERVE SHUTDOWN (Hours) 0 0 0 THERMAL ENERGY GENERATED (MWHt Gross) 1,637,249 3,478,998 326,683,971 ELECTRICAL ENERGY GENERATED (HWEHe Gross) 534,754 1,140,085 104,628,244 ELECTRICAL ENERGY GENr M TED (MWEHe Net) 514,{6 1,097,061 99,203,978 REACTOR OERVICE FACTOR (%) 100.01 100.06 70 8%

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REACTOR AVAILABILITY FACTOR (%) 100.0% 100.06 70.8%

GENERATOR SERVICE FACTOR (4) 100.09 100.0% 67.5%

GENERATOR AVAILABLILITY FACTOR (%) 100.Ot 100.Ot 67.51 CAPACITY FACTOR (Using MCD Net) (%) 99.2% 100.45 55.7%

CAPACITY FACTOR (Using DER Net) (%) 96.51 97.66 5 4 .1't FORCED OUTAGE FACTOR (%) 0.04 0.0% 14.3%

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3.3 UNIT 2 SHUTDOWNS REPORT MONTH OF FEBRUARY 1998 NO lDATE TYPE DURATION REASON METHOD CORRECTIVE il) (HOURSl* (2) OF ACTIONS /

SHUTTING COtHENTS DOWN-REACTOR (3)

Year-to-date forced outage hours = 105 Cumulative forced outage hours = 24533 TABLE KEY:

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F: Forced Method:

S: Scheduled 1. Manual

2. Manual Scram (2) 3.  ;& nmatic Scram Reason: 4. Other (Explain)

A Equipment Failure (Explain) 5. Load Reduction B ifaintenance or Test C Refueling D Regulatory Restriction E Operator Training &

Licensing Exam F Administrative G Operational Error H Other (Explain) 8

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3.4 UNIT 3 SHUTDOWNS REPORT MONTH FEBRUARY 1998 no  : Arc roo m ommN PECNQ METHM OF COMICT rd (WCRJ:* SHUTTIN3 ACTION 3/

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Year-to-date forced outage hours = 0 Cumulative forced outage hours = 25,940 TABLE KEY:

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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 j F Administrative l G Operational Erro-H Other (Explain) l l

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4. 0 15NIQUE REPORTING REQUIREMENTS i

l 4.1 MAIN STEAM RELIEF AND/ OR SAFETY VALVE OPERATIONS - UNIT 2 AND UNIT 3 None i

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