SVPLTR 05-0014, March 2005 Monthly Operating Report for Dresden Nuclear Power Station, Units 2 and 3

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March 2005 Monthly Operating Report for Dresden Nuclear Power Station, Units 2 and 3
ML051010025
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 04/08/2005
From: Bost D
Exelon Generation Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
SVPLTR # 05-0014
Download: ML051010025 (7)
v • d • e


Text

April 8, 2005 SVPLTR # 05-0014 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Dresden Nuclear Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-19 and DPR-25 NRC Docket Nos. 50-237 and 50-249

Subject:

Monthly Operating Report for March 2005 In accordance with Technical Specifications, Section 5.6.4, Monthly Operating Reports, we are submitting the March 2005 Monthly Operating Report for Dresden Nuclear Power Station (DNPS), Units 2 and 3.

Should you have any questions concerning this letter, please contact Mr. Pedro Salas, Regulatory Assurance Manager, at (815) 416 - 2800.

Respectfully, Original Signed by Danny G. Bost Site Vice President Dresden Nuclear Power Station Attachment cc: Regional Administrator - NRC Region III NRC Senior Resident Inspector - Dresden Nuclear Power Station

ATTACHMENT DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 MONTHLY OPERATING REPORT FOR MARCH 2005 EXELON GENERATION COMPANY, LLC RENEWED FACILITY OPERATING LICENSE NOS. DPR-19 AND DPR-25 NRC DOCKET NOS. 50-237 AND 50-249 1

TABLE OF CONTENTS I. Summary of Operating Experience A. Unit 2 Monthly Operating Experience Summary B. Unit 3 Monthly Operating Experience Summary II. Operating Data Statistics A. Operating Data Report - Dresden Unit 2 B. Operating Data Report - Dresden Unit 3 III Unit Shutdowns A. Unit 2 Shutdowns B. Unit 3 Shutdowns IV. Challenges to Safety and Relief Valves 2

I.

SUMMARY

OF OPERATING EXPERIENCE FOR MARCH - 2005 A. UNIT 2 MONTHLY OPERATING EXPERIENCE

SUMMARY

On March 12, at approximately 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />, load was reduced to approximately 62% electrical output to perform turbine valve testing, control rod scram time testing, and a control rod pattern adjustment. The unit returned to full power operation at approximately 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> on March 13.

On March 24, at approximately 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />, the unit experienced a Primary Containment Group 1 isolation and subsequent reactor scram due to a malfunction of the Electrohydraulic Control system. The unit returned online at approximately 2000 on March 27 and returned to full power operation at approximately 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br /> on March 28.

On March 29, at approximately 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br />, load was reduced to approximately 79% electrical output to perform a control rod pattern adjustment that was required due to the forced outage. The unit returned to full power operation at approximately 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> on March 30.

With the exception of short periods for routine maintenance and surveillances, Unit 2 operated at full power for the remainder of the reporting period.

B. UNIT 3 MONTHLY OPERATING EXPERIENCE

SUMMARY

With the exception of short periods for routine maintenance and surveillances, Unit 3 operated at full power for the entire reporting period.

3

II. OPERATING DATA STATISTICS A. Dresden Unit 2 Operating Data Report for March 2005 DOCKET NO. 050-237 DATE April 1, 2005 COMPLETED BY Joseph Reda TELEPHONE (815) 416-3081 OPERATING STATUS

1. REPORTING PERIOD: March 2005
2. CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,957 MAXIMUM DEPENDABLE CAPACITY (MWe NET): 850 (estimated)

DESIGN ELECTRICAL RATING (MWe Net): 867 Unit 2 Monthly Operating Status This Year to Cumulative Month Date

3. Reactor Critical - Hours 678 2,094 233,829
4. Hours Generator On-Line 657 2,073 225,026
5. Unit Reserve Shutdown - Hours 0 0 4
6. Net Electrical Energy Generated -

MWHe 555,556 1,773,471 152,396,050 4

II. OPERATING DATA STATISTICS B. Dresden Unit 3 Operating Data Report for March 2005 DOCKET NO. 050-249 DATE April 1, 2005 COMPLETED BY Joseph Reda TELEPHONE (815) 416-3081 OPERATING STATUS

1. REPORTING PERIOD: March 2005
2. CURRENTLY AUTHORIZED POWER LEVEL (MWth): 2,957 MAXIMUM DEPENDABLE CAPACITY (MWe NET): 850 (estimated)

DESIGN ELECTRICAL RATING (MWe Net): 867 Unit 3 Monthly Operating Status This Year to Cumulative Month Date

3. Reactor Critical - Hours 744 2,160 221,134
4. Hours Generator On-Line 744 2,160 212,986
5. Unit Reserve Shutdown - Hours 0 0 1
6. Net Electrical Energy Generated -

MWHe 648,431 1,876,355 144,640,561 5

III. UNIT SHUTDOWNS A. Unit 2 Shutdowns for March 2005 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/

(1) (HOURS) SHUTTING COMMENTS DOWN REACTOR (3)

D2F45 3/24/05 F 87 A (EHC System 3 Suspect components in the EHC Malfunction) system were replaced and calibrated.

B. Unit 3 Shutdowns for March 2005 NO DATE TYPE DURATION REASON (2) METHOD OF CORRECTIVE ACTIONS/

(1) (HOURS) SHUTTING COMMENTS DOWN REACTOR (3)

None LEGEND:

(1) Type: (2) Reason (3) Method F - Forced A. Equipment Failure (Explain) 1. Manual S - Scheduled B. Maintenance or Test 2. Manual Trip / Scram C. Refueling 3. Automatic Trip / Scram D. Regulatory Restriction 4. Continuation E. Operator Training & Licensing Exam 5. Other (Explain)

F. Administrative G. Operational Error (Explain)

H. Other (Explain)

IV. Challenges to Safety and Relief Valves Unit 2 None Unit 3 None 6

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