NG-02-0284, March 2002 Monthly Operating Report for Duane Arnold Energy Center

March 2002 Monthly Operating Report for Duane Arnold Energy Center

ML021140399
Person / Time
Site:	Duane Arnold
Issue date:	04/10/2002
From:	Richard Anderson Nuclear Management Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NG-02-0284
Download: ML021140399 (7)

Text

Duane Arnold Energy Center 3313 DAEC Road Palo, IA 52324-9646 Operated by Nuclear Management Company, LLC April 10, 2002 NG-02-0284 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station 0-PI-17 Washington, DC 20555-0001

Subject:

File:

Duane Arnold Energy Center Docket No: 50-331 Operating License: DPR-49 March 2002 Monthly Operating Report A-118d Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for March 2002. 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.

Very truly yours, Plant Manager-Nuclear RA/RBW Enclosures j36 4 Committed to Nuclear Excellence

April 10, 2002 NG-02-0284 Page 2 of 2 cc:

Mr. James E. Dyer Regional Administrator, Region III U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351 Ms. Barbara Lewis McGraw-Hill, Inc.

1200 G Street NW, Suite 1100 Washington, DC 20005 Mr. Dennis Murdock Central Iowa Power Cooperative Box 2517 Cedar Rapids, IA 52406 Document Control Desk INPO Records Center 700 Galleria Parkway Atlanta, GA 30339-5957 Ms. Brenda Mozafari Project Manager 1 White Flint North Mail Stop 8H2 11555 Rockville Pike Rockville, MD 20852 Ms. Lisa Stump Iowa State Utilities Board Lucas State Office Building Des Moines, IA 50319 Dr. William A. Jacobs, Jr.

GDS Associates, Inc.

1850 Parkway Place, Suite 720 Marietta, GA 30068-8237 Mr. Dale Arends Corn Belt Power Cooperative 1300 13th Street North Humboldt, IA 50548 Mr. Al Gutterman Morgan Lewis 1111 Pennsylvania Avenue, NW Washington, DC 20004 DOCU NRC Resident Inspector CTS Project Mr. Darl Hood 1 White Flint North Mail Stop 8H4A 11555 Rockville Pike Rockville, MD 20852

OPERATING DATA REPORT OPERATING STATUS

1.

Unit Name: Duane Arnold Energv Center

2.

Reporting Period: March 2002

3.

Licensed Thermal Power (MWth): 1912 Tech. Spec. Amendment 243 and TSCR for extended power uprate was implemented November 7, 200L Current operating thermal power, as limited by balance-of-plant equipment, is 7-70 1790.

4.

Nameplate Rating (Gross MW, DER): 676.425 Current rated output, adjustedfor as-built balance-of plant conditions is 607-. 614. 0

5.

Design Electrical Rating (Net MW, DER): 574-581.4

6.

Maximun Dependable Capacity (Gross MW, MDC):

4*S6 593.1

7.

Maximum Dependable Capacity (Net MWe MDC):

-5 565.5

8.

If Changes Occur in Capacity Ratings (Items Number 3 DOCKET NO:

50-331 DATE:

04-10-2002 Unit:

Duane Arnold Energy Center COMPLETED BY:

Richard Woodward TELEPHONE:

(319) 851-7318 Ther al Crz~s Eleobio

• mon 4/1/2032 I2*0*

AM OnookI.Cep*u e

Linmreas froma ll77Oo 1790 M'Nth C7 II 1r17......f annf 62 --

on*

ms11 m

11ý2 lou! -





ft I

500 400 1043 0

]

140 - -.

I in-,

Sywefl Leekae kevfr

'0V4O2O5-C3(O14O

NSSI CiC.THRMAFwsic2N GROsS AT through 7) since the last report, give reasons: Modifications were performed March 4-8 on the Feed Regulating Valve to Mrait increasingthermal Dower from 1770 to 1790 MWth Thecanacilvfactor amnnttonshblaw eha~M on pro-rated average ratings (before and after March 11"'),

9%

Power Level to Which Restricted-If Any (Net MWJ): N/A 10, Reasons for Resietions, If Any: N/A

11.

Hours in Reporting Period 744.0 2,160.0 238,104.0

12.

Number of Hours Reactor Was Critical 638.0 2,054.0 188,034.6

13.

ReactorReserve Shutdown Hours 0.0 0.0 0.0

14.

Hours Generater On-Line 612.0 2,028.0 183,952.9

15.

Unit Reserve Shutdown Hours 0.0 0.0 0.0

16.

Gross ThermalEnergy Generated (MWH) 1,053,537.6 3,522,573.7 268,021,203.5

17.

Gross Electrical Energy Generated (4WH) 362,058.0 1,215,991.0 89,950,208.6

18.

Net Electrical Energy Generated (MWIH) 342,664.2 1,151,005.2 84,526,631.2

19.

Unit Service Factor 82.3%

93.9%

77.3%

20.

Unit Availability Factor 82.3%

93.9%

77.3%

21.

Unit Capacity Factor (Using MDC Net) 81.8%

95,4%

69.8%

22.

Unit Capacity Factor (Using DER Net) 79.6%

92.8%

66.9%

23.

Unit Forced Outage Rate 0.0%

0.0%

8.5%

col

24.

Shutdowns Scheduled Over Next 6 Months (Thyx, Date, and Duration of each): N/A

25.

If Shitdown at End of Renard Pound_ Estimated Date of Stasom: N/A Mar-02 2002 cumulative

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO:

50-331 DATE:

04-10-2002 Unit:

Duane Arnold Energy Center COMPLETED BY:

Richard Woodward TELEPHONE:

(319) 851-7318 MONTH March 2002 Day Average Daily Power Level (MWe-Net) 1 582.8 2

583.2 3

413.2 4

0.0 5

0.0 6

0.0 7

0.0 8

0.0 9

37.6 10 348.5 11 565.7 12 586.6 13 585.5 14 582.9 15 586.7 16 586.9 17 586.5 18 586.4 19 586.2 20 587.1 21 583.8 22 587.1 23 589.8 24 589.5 25 590.3 26 588.5 27 587.2 28 584.5 29 584.1 30 585.9 31 1

586.7

REFUELING INFORMATION DOCKET NO:

50-331 DATE:

04-10-2002 Unit:

Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE:

(319) 851-7318

1.

Name of facility. Duane Arnold Energy Center

2.

Scheduled date for next refueling shutdown. Spring 2003

3.

Scheduled date for restart following refueling. Spring 2003

4.

Will refueling or resumption of operation thereafter require a technical specification change or other license amendment? No

5.

Scheduled date(s) for submitting proposed licensing action and supporting information. N/A

6.

Important licensing considerations associated with refueling, e.g., new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures. N/A

7.

Current fuel assemblies inventory Number of Projected date of last Fuel refueling that can be Assemblies discharged (after allowing margin for maintenance of continuous full-core dischargne cability_)_

Installed into reactor core 368 Discharged from core to Spent Fuel Storage Pool 1912 Installed capacity of Spent Fuel Storage Pool 2411 2001 Licensed capacity of Spent Fuel Storage Pool (with re-racking).

2829 2007 Licensed capacity of Spent Fuel Storage Pool and Cask Pool (with 3152 2011 reracking)

DOCKET NO:

DATE:

Unit:

COMPLETED BY:

TELEPHONE:

50-331 04-10-2002 Duane Arnold Energy Center Richard Woodward (319) 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: March 2002 No.

Date Type Duration Reason Method of Licensee Cause (1)

(Hours)

(2)

Shutting Event Down Reactor Report #

(3) 2 03/04 02:05 S

132.0 B

1 Identify and repair the (156.7 Effective-source of leakage into 03/09 14:07

-full-power-the drywell hours-equivalent, including ramp down & ramp up)

I - F: Forced

- Reason 3 - Method:

S: Scheduled A-Equipment Failure (Explain) 1 -Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continued E-Operator Training & License Examination 5-Reduced Load F-Administrative 9-Other (Explain)

G-Operational Error (Explain)

H-Other (Explain)

DOCKET NO.:

50-331 DATE:

04-10-2002 Unit:

Duane Arnold Energy Center COMPLETED BY:

Richard Woodward TELEPHONE:

(319) 851-7318 Monthly Operational Overview for March 2002 At the beginning of March the DAEC was operating at its 1770 MWth administrative thermal power limit. Unidentified drywell leakage was continuing at approximately 0.8 - 0.9 GPM. (Ref. January and February 2002 NRC Monthly Operating Reports. The DAEC Technical Specification Limit for drywell leakage is 5 GPM unidentified, 25 GPM total, and 2 GPM increase within previous 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.) A scheduled shutdown to identify and repair the source of the leakage commenced at 12:00 on March 31o and at 02:05 March 4m the generator was taken off-line. A reactor scram was inserted at 03:40 March 40.

At 04:22 on March 8t, while shut down (in Mode 4), it was determined that for six minutes beginning at 03:13, reactor bulk coolant temperature had reached 212 *F, resulting in an unplanned change to Mode 3. While removing Shutdown Cooling from service in preparation for plant startup, an operator reported that a loose gearbox cover appeared to be preventing the R-R Cross-tie valve (V19-0048) from being throttled fully open. initially, it was thought that the valve could operate in the open direction, but it was; later discovered that a dislodged valve-retainingnut blocked th valve from fully opening. Before Shutdown Cooling could be restored to service, reactor temperature had exceeded 212 IF. With the Plant in Mode 3, and LPCI inoperable (due to the inability to open V19-0048), the Plant had inadvertently entered into a Condition Prohibited by Technical Specifications [10CFR50.73(a)(2)(i)(B)]. The condition was exited when Shutdown Cooling was restarted at 03:19. (LER 2002-001 pending.)

Also, during the outage, a modification was performed on the Feed Regulating Valve (FRV) to allow operation at 20 MWth increased thernal power (1790 MWth).

Following completion of all repairs, the reactor was taken critical at 13:42 March t, and the generator synchronized to the grid at 14:07 March 9a. For the month, the DAEC reactor was critical 638.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />, and the generator on-line 612.

Following the ramp-up to full power, 1790 MWth was achieved March 11 at 13:19.

The DAEC operated at full power for the remainder of the month except for the following brief, small power reductions:

to perform maintenance on the plant process computer 03/21 to perform a HPCI surveillance March 26th, and to adjust load-line 03/11, 03/12 and 03/27.

iAllocatiun of Production & Lesse:

Electrical, Capacity Factor, Fall Power Output

% Of 611.5*

Equivalent MWe MWe Hours Caci tosse(ie., departures from full thernmal power):

0.08 0.01%

0,10 Loadjine Adjustments: 03111 (2), 03/12, & 03/27 1iJPI Surveillance 03&6 0.02 0.00%

003 PlatProues Csornute*

o--S 0*0.16,

0.ý093%o 0.20 wellhLek Repir ra wn 03/03 -04 & rsap-up 03/09 - 11 21.76 356%

26.48 MaintainMaito l790 AdmiistraveMW L t

0.12 U02%

014 4+Seosonal fffectsriegativelos*eS., cold 6er

)

2

+il.00%)

-7.4)

Subtotal: Oni-line Losses (Capacity, Efficiency, IanIdW W eat Iher):

-16.33

2. 167%

19.88

• Pýrort ed averse. JiRV Modification allowed Target Outout to be increased from 607back to 614 on March 11 2002.

Licensing Action Summary:

C002-Plant Availability:

182.3%

1 t Unplanned Auto Scrams (while critical) this month:

1 1

Number of rprtable events:

1 1

Unplanned Auto Scrams (while critical) last 12 101