NG-95-2805, Monthly Operating Rept for Aug 1995 for Daec
| ML20092K045 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 08/31/1995 |
| From: | Middlesworth G, Woodward R INDIANA MICHIGAN POWER CO. |
| To: | Miller H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NG-95-2805, NUDOCS 9509250198 | |
| Download: ML20092K045 (6) | |
Text
Duane Amold Energy Center 3277 DAEC Road
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Palo, IA 52324 Telephone 319 8517611 Fax 319 8517611 September 15,1995 NG-95-2805
- UTILITIES Mr. Ilubert J. Miller.
Regional Administrator Region Ill U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351
Subject:
Duane Arnold Energy Center Docket No: 50-331 Operating License DPR-49 August 1995 Monthly Operating Report
Dear Mr. Miller:
Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for August 1995. The report has been prepared in accordance with the guidelines of NUREG-0020 and distribution has been made in accordance with DAEC Technical Specifications, Section 6.11.1.c.
Very truly yours, sw/
4 Gary Van Middlesworth Plant Superintendent, Nuclear GV/R11W/cc Enclosures file A-Il8d cc:
U.S. Nuclear Regulatory Commission Mr. Dennis Murdock Attn: Document Control Desk Centrallowa Power Cooperative Mail Station PI 37 Box 2517 Washington, DC 20555-0001 (Orig.)
Cedar Rapids, IA 52406 Mr. Glenn Kelly Dr. William A. Jacobs, Jr.
Project Manager GDS Associates,Inc.
I Whiteflint North Suite 720 Mail Stop 13E21 1850 Parkway Place 11555 Rockville Pike Marietta, G A 30068-8237 Rockville, MD 20852 Document Control Desk Mr. Dale Arends j
INPO Records Center Corn Belt Power Cooperative 1
700 Galleria Parkway 130013th Street North Atlanta, GA 30339-5957 Ilumboldt, IA 50548 Mr. Steve llrown DOCU lowa State Utilities lloard Lucas State Office Iluilding NRC Resident inspector Des Moines, IA 50319 Mr. Fred Yost Director, Research Services Utility Data institute 1700 K St. NW, Suite 400 Washington, DC 20006 V
g 9509250198 950831 s
PDR ADOCK 05000331 R
.PDR An IES Indusnes wenpany
OPERATING DATA REPORT DOCKET NO:
50-0331 DATE:
09/15/95 Unit:
Duane Arnold Energy Center COMPLETED BY:
Richard Woodward TELEPifONE:
(319) 851-7311 OPERATING STATUS Average Daily Power Level i
1.
Unit Name: Duane Arnold Energy Center 2.
Reporting Period: August 1995 400 3.
L.icensed Thermal Power (MW ):th 1618
- E 300 4.
Nameplate Rating (Gross MW DER): 565.7 (Turbine) 200 e
5.
Design Electrical Rating (Net MW DER): 118 100 e
0 6.
Maximum Dependable Capacity (Gross MW MDC): 141 e
1 6
11 16 21 26 31 7.
Maximum Dependable Capacity (Net MW MDC):ill e
Day 8.
If Changes Occur in Capacity Ratings (Items Number 3 through
- 7) since the last report, Give Reasons: Mat Anplicable 9.
Power Level to Which Restricted, If Any (Net MWe): ND1 Apolicable 10.
Reasons for Restrictions, if Any: Not Applicable August-95 1995 Cummulative i 1.
Ilours in Reporting Period 744.0 5,831.0 180,407.0 12.
Number of flours Reactor Was Critical 744.0 4,416.2 135,596.8 13.
Reactor Reserve Shutdown llours 0.0 0.0 192.8 14.
Ilours Generator On-Line 744.0 4,325.7 132,184.8 15.
Unit Reserve Shutdown llours 0.0 0.0 0.0 l
16.
Gross Thermal Energy Generated (MWil)
I,226,632.5 6,931,368.3 184,459,728.0 17.
Gross Electrical Energy Generated (MWil) 407,140.0 2,329,361.0 61,777,247.5 l
13.
Net Electrical Energy Generated (MWil) 384,208.7 2,194,826.2 57,934,870.5 19.
Unit Service Factor 100.0 %
74.2 %
73.3 %
20.
Unit Availability Factor 100.0 %
74.2 %
73.3 %
l 21.
Unit Capacity Factor (Using MDC Net) 100.3 %
73.1 %
67.8 %
f 22.
Unit Capacity Factor (Using DER Net) 96.0 %
70.0 %
64.9 %
Unit Forced Outage Rate 0.0%
1.8%
11.0 %
23.
l
{
24.
Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each): N/A i
25.
If Shutdown at End of Report Period, Estimated Date of Startup: N/A i
l
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-0331 DATE: 09/15/95 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPilONE: (319) 851-7318 MONTII August 1995 Day Average Duily
~ PowerIxvel (MWe-Net) 1 524.1 2
521.4 3
519.4 4
524.0 5
512.3 6
447.9 7
517.5 8
517.2 9
515.1 10 518.5 11 f
516.5 12 515.6 13 514.9 14 520.1 15 522.1 16 517.6 17 514.6 18 513.8 19 520.1 20 526.5 21 523.6 22 523.1 23 519.5 24 520.4 25 519.8 26 518.3 27 517.1 28 515.3 29 516.1 30 516.2 31 520.0
REFUELING INFORMATION l
DOCKET NO: 50-0331 DATE: 09/15/95 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPl!ONE: (319)851 7318 1.
Name of facility.
Duane Arnold Energy Center l
2.
Scheduled date for next refueling shutdown.
Refuel Outage XIV to begin October 10,1996.
3.
Actual date for restart following refueling.
November 14,1996 l
l 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 installed in reactor core (following refueling) 368 n/a previously discharged from core to Spent Fuel 1408 n/a Storage Pool (following refueling) under present physical capacity of Spent Fuel 2411 2007 Storage Pool under Licensed Capacity of Spent Fuel Storage Pool 3152 2014
DOCKET NO: 50-0331 DATE: 09/15,95 Unit Duane Arnold Enern Center COMPLETED BY: Richard Woodward TELEPHONE: (319)851-7318 4
UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTil: August 1995 (No shutdowns or power reductions greater than 20%)
No.
Date Type Duration Reason Method of Licensec Event System Code Comp.
Cause (1)
(flours)
(2)
Shutting Report #
(4)
Code Down (5)
Reactor (3) 1 - F: Forced 2 - Reason 3 - Method-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-Opemtor Training & License Examination 5-Reduced Load F-Administrative 9-Other (Explain) 5 - Exhibit I (Same Source)
G-Operational Error (Explain)
H-Other(Explain)
+e m
- e m
s-
' ve - *
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DOCKET NO.: 50-0331 DATE: 09/15/95 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPilONE: (319)851-7318 Monthly Operational Overview for August 1995:
The DAEC operated at full thermal power throughout the month of August except to reduce power to perform a control rod sequence exchange August 4 - 7.
Continued weather-related elevated Circulating Water System temperatures caused thermal conversion efficiency losses equivalent to 2.1% of normal plant output during August, which was even greater than July's losses.
Ilowever, despite the continued hot weather, the DAEC was at no time during the month capacity-limited by high condenser back-pressure.
Allocation of Production & Losses:
Liectr' cal capacity tactor uit Power Output MWe
%of 565.7 MWe Equivalent (Design Gross Rating)
Ilours Actual Metered Net illectric Output 516.4 91.3 %
679.2 Actual Metered Plant i lectric Loads 30.8 5.4%
40.5 Off-Linc 0.0 00%
0.0 Weather losses, ic., condenser pressurc / circ water temp greater than design i 1.9 2.1%
15.8 Control Rod Drive liscrcises Aug. 4 - 6 2.4 0.4%
3.2 Other capacity losses 0.7 0.2%
0.9 Other i.fDciency Losses
.14 ilth L4 Design Gross 1.lectric Output g
IDiL(D 214_Q A Reactor Protection System (RPS) half scram and several partial primary containment isolations occurred at 10:50 a.m. on August 29. Investigation showed a "B" Electrical Protection Assembly (EPA) breaker had tripped on an und:rvoltage signal. At i120 the half scram was reset and at i130 all isolations were reset. The "B" RPS Motor Generator Set was returned to service September 8 af ter a week and a half of troubleshooting and testing.
Since no definitive problem was identified, additional monitoring equipment will be used to help prevent another trip and also to aid in determining the cause if another trip should occur. This was a four hour reportable event.
1.ER #95-10 (pending).
Licensing Action Surnmarv:
Plant Availability:
100.0 %
Unplanned Auto Scrams (while/ critical) this month:
0 Number of reportable events:
1 Unplanned Auto Scrams (while/ critical)last 12 months:
1 J