NG-04-0694, October 2004 Monthly Operating Report for Duane Arnold Energy Center
| ML043280511 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 11/15/2004 |
| From: | Peifer M Nuclear Management Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NG-04-0694 | |
| Download: ML043280511 (3) | |
Text
Narll Committed to Nuclear Excelln Duane Arnold Energy Center Operated by Nuclear Management Company, LLC November 15, 2004 NG-04-0694 TS 5.6.4 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Duane Arnold Energy Center Docket 50-331 License No. DPR-49 Monthly Operating Report Please find enclosed the Duane Arnold Energy Center (DAEC) Monthly Operating Report. The report has been prepared in accordance with the guidelines of NRC Generic Letter 97-02: "Revised Contents Of The Monthly Operating Report," and distribution has been made in accordance with DAEC Technical Specifications, Section 5.6.4.
This letter.makes no new commitments or changes to any existing commitments.
Mark A. Pei Site Vice President, Duane Arnold Energy Center Nuclear Management Company, LLC
Enclosure:
(1)
CC Administrator, Region Ill, USNRC Project Manager,' DAEC, USNRC Resident Inspector, DAEC, USNRC
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ENCLOSURE 1 MONTHLY OPERATING REPORT DOCKET NO.
UNIT NAME DATE COMPLETED BY TELEPHONE 50-331 Duane Arnold November 4, 2004 Mike Fairchild (319) 851-7642 REPORTING October 2004
_PERIOD:
- 1. Design Electrical Rating (MWe)
- 2. Maximum Dependable Capacity (MWe-Net) 581.40 565.50
- 3. Number of Hours the Reactor was Critical
- 4. Number of Hours Generator On-line
- 5. Reserve Shutdown Hours
- 6. Net Electrical Energy Generated (MWHrs)
This Month 666.33 651.78 0.00 358.931.00 l Yr-to-Date 7,169.90 7,133.01 0.00 4,090,583.00 Cumulative 208,848.17 204,418.53 192.80 96,045,858.68 UNIT SHUTDOWNS Type Method F: Forced of Cause & Corrective S:SDuration R
ShuttinPq Action No.
Date Scheduled (Hours)
Reason D
Down Comments
,10/25/04-
_S_ _ ^.
94.37 B
-.- Planned shutdown to repair main condenser tube leak.
'Reason:
A Equipment Failure (Explain)
B Maintenance or Test C
Refueling D
Regulatory Restriction E
Operator Training & License Examination F
Administration G
Operational Error (Explain)
H Other (Explain) 2Method:
I Manual 2
Manual Trip/Scram 3
Automatic Trip/Scram 4
Continuation 5
Other (Explain)
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NARRATIVE
SUMMARY
At 0033 on October 11, reactor power was reduced to 1692 MWth in order to perform a loadline adjustment. Full power was restored at 0114 on October 11.
At 1300 on October 24, power reduction began in preparation for a reactor shutdown to repair a small main condenser tube leak which had been identified earlier in the month. The Main Turbine was tripped at 0338, on October 25.
After planned work was completed reactor startup commenced at 0410 on October 28, and the main generator was placed back on the grid at 0200 on 83tdbeI r29Operators-rcu-readcfrdrisih eat6 powerat 045 on OcptWbe 30, at 1650 MWth, and the "A" Feedwater Regulating Valve (FRV) controller was placed in manual due to control oscillations. Reactor power was then reduced to 1540 MWth by 0132. After improvement in the magnitude of FRV oscillations, the "A" FRV controller was placed back into automatic at 0144, but control was still unstable. Power reduction continued to 1500 MWth by 0159 and it was noted the oscillations on the 'A" FRV had ceased. Power ascension remained on hold pending resolution of the FRV control issue.
At 0200 on October 31, operators commenced reducing reactor power to 1260 MWth in order to perform a loadline adjustment. Reactor power was then raised to 1497 MWth by 0335 on October 31. Further power ascension remained on hold pending resolution of the FRV control issue.
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