NG-95-0908, Monthly Operating Rept for Feb 1995 for DAEC
| ML20081D505 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 02/28/1995 |
| 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-95-0908, NG-95-908, NUDOCS 9503200269 | |
| Download: ML20081D505 (6) | |
Text
.
IES UTILITIES INC.
l March 15,1995 NG-95-0908 Mr. John B. Martin
?
l Regional Administrator Region Ill U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351
Subject:
Duane Arnold Energy Center l
Docket No: 50-33i Operating License DPR-49 February 1995 Monthly Operating Report
?
Dear Mr. Martin:
j Please find enclosed the Duane Arnold Energy Center Monthly Operating Report for February 1995 The report has been j
prepared in accordance with the guidelines of NUREG-0020 and distribution has beca made in accordance with DAEC Technical Specifications, Section 6.11.1.c.
j t
Very truly yours t
'l David Wilson Plant Superintendent, Nuclear i
DLW/RBW/cc Enclosures File A ll8d l
cc:
l 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 524%
i Mr. Glenn Kelly Dr. William A. Jacobs, Jr.
Project Manager GDS Associates,Inc.
~l 1 Whitellint North Suite 720 Mail Stop 13E21 1850 Parkway Place i1555 Rockville Pike Marietta, GA 30068-8237 Rockville, MD 20852 Document Control Desk Mr. Dale Arends INPO Records Center Corn Belt Power Cooperative i100 Circle 75 Parkway 130013th Street North Suite 1500 liumboldt,IA 50548 Atlanta, GA 30339-3064 Mr. Steve Brown DCRC lowa State Utilities Board Lucas State Office Building NRC Resident inspector Des Moines, IA 50319 Mr. Fred Yost Director, Research Services Utility Data Institute j
1700 K St. NW, Suite 400 h
Washington, DC 20006 I
9503200269 950228 PDR ADOCK 05000331 cd,,
R PDR p
An IES INDUSTRIES Company
}
[g Duane Arnold Energy Center = 3277 DAEC Road Falo, Iowa 52324
- 319/851-7611
OPERATING DATA REPORT DOCKET NO:
50-0331 DATE:
03/15/95 Unit:
puane Arnold Energy Center COMPLETED BY:
Richard Woodward TELEPHONE:
(319) 851-7318 OPERATING STATUS Amynaylbeled 1.
Unit Name: Duane Arnold Energy Center l
2.
Reporting Period: February 1995 500 l
3.
Licensed Thermal Power (MW ):th 1f118 y
q Z
4.
Nameplate Rating (Gross MW DER): 565.7 (Turbine) j, 300 e
- s 2 200 5.
Design Electrical Rating (Net MW DER): 118 e
im 6.
Maximum Dependable Capacity (Gross MW MDC): 141 e
0 7.
Maximum Dependable Cap. city (Net MW MDC):ili 1
6 11 16 21 26 e
Eky 8.
If Changes Occur in Capacity Ratings (Items Number 3
)
through 7) since the last report, Give Reasons: Not l
Annlicable 9.
Power Level to Which Restricted, if Any (Net MWe): Not Apnlicable 10.
Reasons for Restrictions, if Any: Not Anolicable
[
February-95 1995 Cummulative i1; llours in Reporting Period 672.0 1,4 i6.0 175,992.0 i2.
Number ofliours Reactor Was Critical 557.8 1,301.8 132,482.4 13.
Reactor Reserve Shutdown llours 0.0 0.0 192.8 14.
liours Generator On-Line 555.0 1,299.0 129,158.1 15.
Unit Resen'e Shutdown liours 0.0 0.0 0.0 16.
Gross 3ermal Energy Generated (MWil) 851,698.0 2,056,311.6 179,584,671.3 17.
Gross Electrical Energy Generated (MWil) 289,271.0 701,089.0 60,148,975.5 18.
Net Electrical Energy Generated (MWil) 272,210.1 660,634.0 56,400,678.3
)
19.
Unit Service Factor 82.6 %
91.7 %
73.4 %
20.
Unit Availability Factor 82.6 %
91.7 %
73.4 %
i 21.
Unit Capacity Factor (Using MDC Net) 78.7 %
90.6 %
o/.8%
22.
Unit Capacity Factor (Using DER Net) 75.3 %
86.7 %
64.9 %
23.
Unit Forced Outage Rate 0.0%
0.0%
11.2 %
24.
Shutdowns Scheduled Over Next 6 Months (Type. Date, and Duration of each): Refueling Outage XIII L,epan Feb. 23.1995. as scheduled. Exnected Duration 54 days 25.
If Shutdown at End of Report Period, Est. Date of Startup: Aprill2,1225 1
.- b
1 REFUELING INFORMATION ~
DOCKET NO: 50-0331 DATE: 03/15/95 Unit: Duane Arnold Enercy C.,M COMPLETED BY: Richard Woodward i
TELEPHONE: (319) 851-7318 1.-
Name of facility.
Duane Arnold Energy Center 2.
Scheduled date for next refueling shutdown.
Refuel Outage XIII began February 23,1935, as scheduled.
3.
Scheduled date for restart following refueling.
April 17,1995 4.
Will refueling or resumption of operation thereafter require a technical specification change or other license amendment? No i
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 i
7.
Current and projected fuel assemblies inventory:
Number of Projected date oflast Fuel refueling that can be discha ged Assemblies currently installed in reactor core 368 n/a previously discharged from core to Spent 1280 n/a Fuel Storage Pool under present physical capacity of Spent Fuel 2411 2007 Storage Pool under Licensed Capacity of Spent Fuel 3152 2014 Storage Pool
AVERAGE DAILY UNIT POWER LEVEL l
DOCKETNO: 50-0331 DATE: 03/15/95 Unit: Duane Arnold Enercy Center COMPLETED BY: Richard Woodward l
TELEPHONE: (319)851-7318 leiONTH February 1995 Day Average Daily Power Level (MWe-Net) 1-534.6 2
535.3 3
533.9 4
536.2 5
530.4 6
538.6 7
534.0 8
535.3 9
534.4 10 528.7 11 533.7 12 535.3 13 535.8 14 534.5 15 534.3 16 531.6 17 531.2 18 527.1 19 527.6 20 523.1 21 287.1 22 188.5 23 210.8 24 0.0 25 0.0 26 0.0 27 0.0 28 0.0 i
i
?
t I
+
DOCKET NO: 50-0331 DATE: 03/15/95 Unit: Duane Arnold Enerny Center COMPLETED BY: Richard Woodward TELEPIIONE: (3191 851-7318 UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTil: February 1995 No.
L te Type Duration Reason Method of Licensee Event System Comp.
Cause (1)
(Ilours)
(2)
Shutting Report #
Code Code Down-(4)
(5)
Reactor (3) 1.
02/21/95 F
34.9 A
5 N/A AD MG "B" Reactor Recirculation Pump MG Set tripped on field (full power Reactor Motor-undervoitage equivalent)
Recirculation Generator System Set 2.
02/23/95 S
9.6 C
5 N/A Reduce power in preparation for shutdown; coastdown (full power equivalent) 3.
02/24/95 S
II7 C
1 N/A Shutdown for Refuel Outage XIll 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-Operator Training & License Examination 5-Reduced Load F-Administrative 9-Other (Explain) 5 - Exhibit I (Same Source)
G-Operational Error (Explain)
II-Other (Explain)
AA DOCKET NO.: 50-0331 DATE: 03/15/95 Unit: Duane Arnold Enerev Centq COMPLETED BY.: Richard Woodward TELEPHONE: (3191851-7318 Monthly Operational Overview for February 1995:
At the beginning of February the plant had operated continuously since December 1,1994. Cycle XIll end-of-full-power-capability began February 15, after which power coasted down by approximately 0.3% per day.
The "B" Reactor Recirculation Pump MG Set tripped on field undervoltage at 06:57 a.m. February 21. Power was reduced to 40% and control rods inserted to maintain reactor load line below 75%. No unanticipated power oscillations were observed at any time during the event. The B Reactor Recirculation Pump MG Set was re-started the evening of February 22 with no complications.
The DAEC remained at reduced power until 20:37 February 23, and then began inserting control rods and reducing reactor recirculation in preparation for Refuel Outage XIII shutdown. At 02:59 a.m. February 24, the main generator was removed from service. The following table summarizes production and losses for February.
Allocation of Production & Losses:
Electrical Capacity Factor full Power Output
% of 565.7 Equivalent MWe MWe Hours (Design Gross Rating)
Actual Metered Net Electric Output 403.8 71.4 %
479.7 Actual Metered Plant Electric Loads (both on- & off-line) 26.7 4.7%
31.7 Off-Line 2/24 @ 02:59, Suberitical (al 05:45 98.5 17.4 %
117.0 Weather (negative losses, ie., seasonal gains, condenser pressure less than design)
-3.3
-0.6%
-3.8 Control Rod Movements. Coastdown 8.1 1.5%
9.6 Other Capacity MWe Losses (Operating at less than full thermal power) 29.4 5.2%
34.9 Efficiency MWe Losses (thermal conversion at less than full design output) 21 DA%
2.2 Design Gross Electric Output 565.7 100.0 %
672.0 While performing excess flow check valve testing on February 24, a Group I primary containment isolation signal was received and an MSL Drain valve and a Recire Sample valve closed. The event was caused by rack isolation valve leakage, which lead to a false high flow signal and completed the logic for the isolation signal.
(LER# 95-02)
Cold shutdown was achieved on February 25. On February 27, the vessel head was removed, the cire pit, the General Service Water System, and the Feedwater System were drained, and the turbine was decoupled from the generator. On February 28, the main steam line plugs were installed and vessel floodup was in progress. The completion of vessel floodup will end phase one of the outage.
There was a security event on February 27. (LER# 95-S01)
Licensing Action Summary:
Plant Availability:
82.6 %
Unplanned Auto Scrams (while/ critical) this month:
0 Number of reportable events: 2 Unplanned Auto Scrams (while/ critical)last 12 months:
0