ML20216C965

Monthly Operating Repts for Mar 1998 for Dresden Nuclear Power Station,Units 1,2 & 3

ML20216C965
Person / Time
Site:	Dresden
Issue date:	03/31/1998
From:	Abrell G, Heffley J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-97-02, GL-97-2, JMHLTR:#98-0107, JMHLTR:#98-107, NUDOCS 9804150120
Download: ML20216C965 (11)

Text

,

Osmmonwealth litison Company

1) resten Generating Station

.- 6M) North Drexten Road A

Morris, IL 60150 Tel 8i s-912 2920 April 9,1998 JhiliLTR: #98-0107 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

hionthly Operating Data Report for hiarch 1998 Dresden Nuclear Power Station Commonwealth Edison Company Docket Nos.50-010,50-237, and 50-249

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l Enclosed is the Dresden Nuclear Power Station hionthly Operating Summary Report for j Afarch 1998.

This information is supplied to your office 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, U  %

J. M. le% fRoy 4 ite Vice Pre ident l L)resden Stati j

l Enclosure i

ec: NRC Region Ill Oflice Illinois Dept. of Nuclear Safety, State ofIllinois I NRC Senior Resident inspector, Dresden Station I UDI, Inc. - Washington, DC '

File / Numerical '

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MONTHLY NRC I i

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SUMMARY

OF OPERATING EXPERIENCE, PER REGULATORY GUIDE 1.16 )

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COMMONWEALTH EDISON COMPANY '

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2 050-237 DPR-19  !

I 050-249 3 DPR-25 i

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TABLE OF CONTENTS MARCH 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. ,

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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 l 3.3 Unit 2 Shutdowns 3.4 Unit 3 Shutdowns 4.0 Unique Reporting Requirements 1 4.1 Main Steam Relief and/or Safety Valve Operations - ,

Unit 2 and Unit 3 4.2 Technical Specification Amendments l

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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 confluence 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 j 200 megawatts electrical (MWe). The unit is being decommissioned with all nuclear fuel removed from the j 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 l and 834 megawatts electrical, respectively, with design l 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.

The Architect-Engineer for Dresden Units 2 and 3 was S7rgent and Lundy of Chicago, Illinois.

This report for MARCH 1998, was compiled by Gary 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 MARCH 1998 2.1 UNIT 2 MONTHLY OPERATING EXPERIENCE

SUMMARY

Unit 2 began the period near full power. At 1138 on March 6, 1998, commenced shut down for refuel  !

outage D2R15. At 0000 on March 7, tripped the turbine, and at 0045 inserted a manual scram to  ;

complete the shutdown. At 0533 March 7, the unit I was placed in cold shutdown. At 0300 commenced fuel offload, and completed this activity at 0857 on March 18. Commenced reload at 0912 on March i 28, 1998.

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SUMMARY

OF OPERATING EXPERIENCE FOR MARCH 1998 l l 2.2 UNIT 3 MONTHLY OPERATING EXPERIENCE

SUMMARY

l Unit 3 began the period at 30% power recovering from single loop operation for planned maintenance. Resumed full power operation at 0035 !

March 2, 1998.  !

Commenced shutdown at 0933 on March 23, 1998 for what was believed to be non-conservative settings on the scram discharge volume level switches. At i 1040 halted the shutdown and resumed normal operation after the settings were confirmed to be I acceptable.

The unit operated near full power for the remainder of the period except for shot periods for maintenance and surveillance activity.

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3.0 OPERATING DATA STATISTICS 3.1 OPERATING DATA REPORT - DRESDEN UNIT TWO DOCKET No. 050-237 DATE April, 1998 COMPLETED BY G. A. ABRELL TELEPHONE (815) 942-2920 OPERATING STATUS

1. REPORTING PERIOD: MARCH 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 WHICH RESTRICTED (MWe Net): No restrictions

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

I REPORTING PERIOD DATA l PARAMETER THIS MONTH YEAR TO DATE CUMULATIVE 5 HOURS IN PERIOD 744 2,160 242,254 ,

6 TIME REACTOR CRITICAL 145 1,472 1/6,48l 7 TIME REACTOR RESERVE SHUTDOWN (Hours) C C (

8 TIME GENERATOR ON-LINE (Hours) 144 1,45' 168,209 l 9 TIME GENERATOR RESERVE SHUTDOWN (Hours) C C 1 10 THERMAL ENERGY GENERATED (MWHt Grose) 344,831 3,421,983 353,185,40t 11 ELECTRICAL ENERGY GENERATED (MNEHe Gross) 111,707 1,115,312 112,849,2VI 12 ELECTRIC.AL ENERGY GENERATED (MWEHe Net) 102,342 1,062,741 106,742,91t 13 REACTOR SERVICE FACTOR (%) 19.54 68.14 72.81 14 REACTOR AVAILABILITY FACTOR (%) 19.5% 68.14 12.84 15 GENERATOR SERVICE FACTOR (%) 19.4% 61.41 69.4V l 16 GENERATOR AVAILABLILITY FACTOR (%) 19.44 bl.44 69.44 17 CAPACITY FACTOR (Using MC) Net) (%) 17.84 6J.it 57.14 18 CAPACITY FACTOR (Using DER Net) (%) 17.M b2.04  %.59 19 FORCED OUTAGE FACTOR (%) 0% b.74 12.75 l

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l 3.0 OPERATING DATA STATISTICS 3.2 OPERATING DATA REPORT - DRESDEN UNIT THREE DOCKET No. 050-249 DATE April 4,1998 COMPLETED BY G. A. ABRELL TELEPHONE (815) 942-2920 OPERATING STATUS

1. REPORTING PERIOD: MARCH 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 744 2,160 231,57E TIME REACTOR CRITICAL 744 2,160 164,101 TIME REACTOR RESERVE SHUTDOWN (Hours) 0 0 0 TIME GENERATOR ON-LINE (Hours) 744 2,160 156,584 TIME GENERATOR RESERVE SHUTDOWN (Hours) 0 0 0 THERMAL ENERGY GENERATED (MWHt Gross) 1,820,908 5,299,906 328,504,879 ELECTRICAL ENERGY GENERATED (HWEHe Gross) 593,775 1,733,860 105,222,019 ELECTRICAL ENERGY GENERATED (MNEHe Net) 572,862 1,669,923 99,776,840 REACTOR SERVICE FACTOR (%) 100.01 100.01 70.91 REACTOR AVAILABILITY FACTOR (%) 100.0% 100.01 70.91 GENERATOR SERVICE FACTOR (%) 100.01 100.0% 67.61 GENERATOR AVAILABLIL,ITY FACTOR (4) 100.05 100.04 67.6V CAPACITY FACTOR (Using id:D Net) (%) 99.71 100.11 55.81 CAPACITY FACTOR (Using DER Net) (%) 97.01 97.44 54.35

{ FORCED OUTAGE FACTOR (%) 0.01, 0.01 14.21 7

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3.3 UNIT 2 SHUTDOWNS REPORT MONTH OF MARCH 1998 NO DATE TYPE DURATION REASON METHOD CORRECTIVE (1) (HOURS)* (2) OF ACTIONS /

SHUTTING COMMENTS DOWN REACTOR (3) 2 980307 S 600 c 1 D2R15 Year-to-date forced outage hours = 105 Cumulative forced outage hours = 24533 TABLE KEY:

(1) (3)

F: Forced Method:

S: Scheduled 1. Manual

2. Manual Scram (2) 3. Automatic Scram Reason: 4. Other (Explain) i A Equipment Failure (Explain) 5. Load Reduction '

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

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

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1 3.4 UNIT 3 SHUTDOWNS i l

KEPORT MONTH MARCH 1998 I I

NO DA rE TYPE (1) DI7AT! GN FEA& iN (2) FU'W3D ri a RRECTl'v E

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

1 (1) (3) l 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) l l

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4.0. UNIQUE REPORTING REQUIREMENTS 4 .1 - MAIN STEAM RELIEF AND/OR SAFETY VALVE OPERATIONS - UNIT 2 AND UNIT 3 None 4.2 Technical Specification Amendments Amendments 167.and 162 to DPR 19 and 25 respectively were

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' issued and implemented on March 6, 199f The change makes the current Technical Specifications (1 ; for the' Standby Liquid Control System .onsistent with the Standard Technical Specifications contained in NUREG-1433, 1

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