NG-95-1752, Monthly Operating Rept for Apr 1994 for DAEC

Monthly Operating Rept for Apr 1994 for DAEC

ML20083C943
Person / Time
Site:	Duane Arnold
Issue date:	04/30/1995
From:	Denise Wilson, Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NG-95-1752, NUDOCS 9505230143
Download: ML20083C943 (6)

Text

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Duane Amold Energy Cwter e

3277 DAEC Road Palo, IA 52324 Telephone 319 8517611 Fax 319 8517611 May 15,1995 UTILITIES Mr. John 11. Martin Regional Administrator Region III U.S. Nuclear Regulatory Conunission 801 Warrenville Road Lisle, IL 60532-435 i

Subject:

Duane Arnold Energy Center Docket No: 50-331 Operating 1.icense 1)PR 49 April 1995 Monthly Operating Report

Dear Mr. Martin:

Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for April 1995. The report has been prepared in accordance with the guidelines of NUREG-0020 and distribution has been inade in accordance with DAEC Technical Specifications, Section 6.11.1.c.

Very truly yot l.'

David Wilson Plant Superintendent, Nuclear DLW/RilW/cc Enclosures I:lle A.ll8d cc:

U.S. Nuclear Regulatory Commission Mr. Dennis Murdock Attn: Document Control Desk Central lowa Power Cooperative Mail Station PI 37 Box 2517 Washington, DC 20555-0001 (Orig.)

Cedar Rapids,IA $2406 Mr. Glenn Kelly Dr. William A. Jacobs, Jr.

Project Manager GDS Associates,Inc.

1 Whireflint North Suite 720 Mail Stop 13E21 1850 Parkway Place I1555 Rockville Pike Marietta, GA 30068-8237 Rock 5ille, MD 20852 Document Control Desk Mr. Dale Arends INPO Records Center Corn Belt Power Cooperative 700 Galleria Parkway 130013th Street North Atlanta, GA 30339 5957 Ilumboldt,IA 50548 Mr. Steve Ilrow n DCRC lowa State Utilities lloard

. Lucas State OITice lluilding NRC Resident inspector Des Moines, I A 50319 Mr. I' red Yost Director, Research Services Utility Data Institute 1700 K St. NW, Suite 400 Washington, DC 20006 9505230143 950430 U 8 PDR ADOCK 05000331 R

PDR I

Am tes inaustnes come r

OPERATING DATA REPORT

?.. -

DOCKET NO:

50-0331 DATE:

03215195 Unit:

Duane Arnold Enercy Center COMPLETED BY:

Richard Woodward TELEPilONE:

(319) 851 7318 OPERATING STATUS 1.

Unit Name: Duane Arnold Enerev Centet f~

2.

Reporting Period: Anril 1995 500 f

3.

Licensed Thermal Power (MW ):if218 400 th 4.

Nameplate Rating (Gross MW DER): 565.7 (Turbine) f300 e

s 5.

Design Electrical Rating (Net MW DER): 118 6

i e

n".,

rt t

i 6.

Maximum Depetidable Capacity (Gross MW MDC): 141 l

l e

f 7.

Maximum Dependable Capacity (Net MW MDC): 115

..... - -.- - - - -. - p r_._r e

0 i.

8.

If Changes Occur in Capacity Ratings (Items Number 3 1

6 Ii 16 21 26 through 7) since the last report, Give Reasons: Nat "I

Apolicable 9.

Power Level to Which Restricted, if Any (Net MWe): Not Ap licable 10.

Reasons for Restrictions, if Any: Nat Applirdic April-95 1995 Cummulative 11.

Ilours in Reporting Period 719.0 2,879.0 177,455.0 12.

Number of11ours Reactor Was Critical 318.6 1,620.4 132,801.0 13.

Reactor Reserve Shutdown liours 0.0 0.0 192.8 14.

Ilours Generator On-Line 271.6 1,570.6 129,429.7 i

15.

Unit Reserve Shutdown liours 0.0 0.0 0.0 16.

Gross Thermal Energy Generated (MWil) 389,466.2 2,445,777.8 179,974,137.5 17.

Gross Electrical Energy Generated (MWil) 129,423.0 830,512.0 60,278,398.5 18.

Net Electrical Energy Generated (MW1I) 121,401.3 782,035.3 56,522,079.6 19.

Unit Service Factor 37.8 %

54.6 %

72.9 %

20.

Unit Availability Factor 37.8 %

54.6 %

72.9 %

21.

Unit Capacity Factor (Using MDC Net) 32.8 %

52.7 %

67.3 %

22.

Unit Capacity Factor (Using DER Net) 31.4 %

50.5%

64.4 %

23.

Unit Forced Outage Rate 0.0%

0.0%

11.1 %

24.

Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): N/A 25.

If Shutdown at End of Report Period, Estimated Date of Startup: N/A. ( Actual starktp; A pril 19.1995)

i AVERAGE DAILY UNIT POWER LEVEL

.6 DOCKET NO: 50-0331 DATE: 05/15/95 Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward l

TELEPilONE: (319) 851-7318 MONTIl April 1995 Duy Average Daily Powerlevel 75 5Sei) 1 0.0 2

0.0 3

0.0 4

0.0 5

0.0 6

0.0 7

0.0 8

0.0

~

9 0.0 10 0.0 11- -... -.

0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 32.6 20 144.7 21 172.'3 22 431.6 23 534.1 24 535.6 25 534.9 26 533.6 27 534.8 28 535.5

REFUELING INFORMATION

• • i DOCKET NO: 53-9331 DATE: 05/15/95 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPilONE: (319) 851-7318 l

1.

Name of facility.

Duane Arnold Energy Center 2.

Scheduled date for next refueling shutdown.

Refuel Outage Xill began February 23,1995, as scheduled.

3.

Actual date for restart following refueling.

April 19,1995 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.

Not applicable 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.

No 7.

Current and projected fuel assemblies inventory:

Number of Projected date oflast Fuel refueling that can be Assemblies discharged j

installed in reactor core (following refueling) 368 n/a previously discharged from core to Spent Fuel 1408 n/a i

Storage Pool (following refueling) under present physical capacity of Spent Fuel 2411 2007 Storage Pool I

under Licensed Capacity of Spent Fuel Storage Pool 3152 2014 l

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__-____._-__-_._._m_

DOCKET NO: 50-0331 DATE- 05/15/95 Unit: Duane Amold Enercy Center COMPLETED BY: Richard Woodward TELEMIONE- (319) 851-7318-UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH: April 1995 No.

Date Type Duration Reason Method of Licensee Event System Comp.

Cause (1)

(Ilours)

(2)

Shutting Report #

Code Code Down (4)

(5)

Reactor (3) 3.

02/24/95 S

447.4 C

4 N/A Shutdown for Refuel Outage XIll; 42.8 full-power-equivalent bour additional losses during ramp-up to full pow er 1 - F: Forced 2 - Reason 3 - hiethod:

4 - Exhibit G-Instructions for S: Scheduled A-Equipment Failure (Explain) 1-Manual Preparation of Data Entry B-Maintenance or Test 2-Manual Scram Sheets for Licensee Event C-Refueling 3-Automatic Scram Report (LER) File (NUREG-D-Regulatory Restriction 4-Continued 0161)

E-Operator Training & License Examination 5-Reduced Load F-Administrative 9-Other(Explain) 5 - Exhibit I (Same Source)

G-Operational Error (Explain)

II-Other(Explain) l l

l

m e

• 1 1" DOCKET NO.: 50-0331 DATE: 05/15/95 Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward TELEPilONE: (319) 851-7318 Monthly Operational Overview for April 1995:

On April 1,1995, the reactor was being refueled as part of Refueling Outage Thirteen. Refueling was completed at 1515 hours0.0175 days <br />0.421 hours <br />0.0025 weeks <br />5.764575e-4 months <br /> on April 3, and core verification was finished later in the day. Final outage work continued, including completion of control rod friction testing. torus coating work, replacement of a bearing on the "B" Emergency Diesel Generator, and reassembly of the main turbine and generator. By April 15, the vessel had been reassembled and the Non-Nuclear lleat Class 1 Ten Year System Leakage Pressure Test had been successfully completed. Reactor startup commenced at 0605 hours0.007 days <br />0.168 hours <br />0.001 weeks <br />2.302025e-4 months <br /> on 4/17/95.

Upon achieving criticality at 0650 hours0.00752 days <br />0.181 hours <br />0.00107 weeks <br />2.47325e-4 months <br /> on April 17, shutdown margin was calculated in accordance with the Technical Specifications and found to be below the minimum required value. Shutdown of the reactor was commenced and cold shutdown mode was soon achieved. Subsequent recalculation by the vendor resulted in a verified shutdown margin value that was adequate. The initial calculation error was due to vendor supplied information and manual calculation inaccuracies. Corrective actions have been undertaken to prevent recurrence.

(LER 95-003).

Startup was recommenced on April 18th, and the generator briefly brought on line as part of a testing sequence the morning of April 19th. Following successfiil turbine overspeed testing the afternoon of April 19th, the generator was brought back on line at 1625 hours0.0188 days <br />0.451 hours <br />0.00269 weeks <br />6.183125e-4 months <br />, marking the end of the outage. At 54 days,12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, the outage duration met the 1995 IES Nuclear Generation Division goal for outage length. Full reactor power was achieved on April 23rd.

Allocation of Production & Losses:

Electncal Capacity 1 actor 1 ull Power Output

% of $65.7 MWe Equivaleni MWe (Design Gross llours Rating)

Actual Metered Net Electric Output 168.8 29.8 %

214.6 Actual Metered Plant Electric Loads (both on-A off-line) 11.2 2.0%

14.2 OtT Line 2/24 (al 02:59 4/19 (d16:35 352.0 62.2 %

447.4 Weather (negative losses. ie.. seasonal gains. condenser pressure less than design)

-0.2 0.0%

-0.2 Ramp-up to full power 33.8 6.0%

43.0 Other Capacity MWe Losses (Operating at less than full thermal power) 3.1 0.6%

3.9 Ernciency MWe Losses (thermal conversion at less than full design output)

-1.D

_n_.f6

-J.9 gig Gross Electric Output 565.7 1000%

7190 At the end of the month the reactor remained at full power.

Licensinc Action Summary:

I Plant Availability:

37.8%

Unplanned Auto Scrams (while/ critical) this month:

0 Number of reportable events:

I Unplanned Auto Scrams (while/ critical)last 12 months:

0

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