NG-95-1350, Monthly Operating Rept for Mar 1995 for DAEC
| ML20082N442 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 03/31/1995 |
| 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-95-1350, NUDOCS 9504250236 | |
| Download: ML20082N442 (6) | |
Text
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IES UTILITIES INC.
April 14,1995.
NG-95-1350 Mr. John B. Martin i
Regional Administrator i
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 March 1995 Monthly Operating Report
Dear Mr. Martin:
Please find enclosed the Duaw Arnold Energy Center Monthly Operating Report for March 1995. The report has been prepared l
in accordance with the guidelines of NUREG-0020 and distribution has been made in accordance with DAEC Technical i
Specifications, Section 6.11.1.c.
Very truly yours.
David Wilson mnt Superintendent, Nuclear DLW/RBW/cc Enclosures File A-118d cC; U.S. Nuclear Regulatory Commission Mr. Dennis Murdock Attn: Document Control Desk Centrallowa Power Cooperative Mail Station Pl-37 Ilox 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 t
i1555 Rockville Pike Marietta, GA 30068-8237 Rockville, 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 llrown DCRC lowa State Utilities floard Lucas State Office fluilding NRC Resident inspector Des Moines. IA 50319 Mr. Fred Yost Director, Research Services Utility Data Institute 1700 K St. NW, Suite 400 Wat $ington. DC 20006
_ 9504250236.950331 l
PDM ADOCK, 05000331
]
.R PDR Duane Arnold Energy Center
- 3277 DAEC Road
- Palo. Iowa 52324
- 319/851-7611 An IES INDUSTRIES Company
OPERATING DATA REPORT DOCKET NO:
50-0331 DATE:
04/14/95 Unit:
Duane Arnold Enercy CentgI COMPLETED BY:
Richard Woodward TELEPilONE:
(3191 851-7318 OPERATING STATUS Aur4pDnbRurlad 1.
Unit Name: Duane Arnold Energy Center SD 2.
Reporting Period: March 1995 l
l l
4D 3.
Licensed Thermal Power (MW ):th Ifi18 hn i
.o T-l 4.
Nameplate Rating (Gross MW DER): 565.7 (Turbine) ya e
.5.
Design Electrical Rating (Net MW DER): 13M 10 0 l
l i
i e
On see 1
. i _..,-l
-- ne+eesee+e *eseesese,+e,*eu 6.
Maximum Dependable Capacity (Gross MW MDC): 141 e
I 6
11 16 21 26 31 7.
Maximum Dependable Capacity (Net MW MDC):ill g
e 8.
If Changes Occur in Capacity Ratings (Items Number 3 through 7) since the last report, Give Reasons: Nat Apolicable 9.
Power Level to Which Restricted, if Any (Net MWe): h Anolicable 10.
fuasons for Restrictions,if Any: M Anolicable March-95 1995 Cumulative 11.
liours in Reporting Period 744.0 2,160.0 176,736.0 12.
Number of Hours Reactor Was Critical 0.0 1,301.8 132,482.4 13.
Reactor Reserve Shutdown Ilours 0.0 0.0 192.8 14.
Ilours Gernerator On-Line 0.0 1,299.0 129,158.1 15.
Unit Reserve Shutdown llours 0.0 0.0 0.0 16.
Gross Thermal Energy Generated (MWil) 0.0 2,056,311.6 179,584,671.3 17.
Gross Electrical Energy Generated (MWil) 0.0 701,089.0 60,148,975.5 18.
Net Electrical Energy Generated (MWil) 0.0 660,634.0 56,400,678.3 19.
Unit Service Factor 0.0%
60.1%
73.1 %
20.
Unit Availability Factor 0.0%
60.1 %
73.1 %
21.
Unit Capacity Factor (Using MDC Net) 0.0%
59.4 %
67.5 %
22.
Unit Capacity Factor (Using DER Net) 0.0%
56.8%
64.6 %
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 outagc_X111 hegan Feb. 23.1995. as scheduled. Excected Duration: 54 days 25.
If Shutdown at End of Report Period, Est. Date of Startup: April 11,1221
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO: 50-0331 DATE: 04/14/95 Unit: Duane Arnold Enerev Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 MONTH March 1995 Day Averagelhily PowerIxvel (MWe-Net) 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 0.0 21 0.0 22 0.0
~
23 0.0 25 0.0 26 0.0 27 0.0 28 0.0 29 0.0 30 0.0 31 0.0
REFUELING INFORMATION DOCKET NO: 50-0331 DATE: QW14/95 (Jnit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (3191 851-7318 1.
Name of facility.
Duane Arnold Energy Center 2.
Scheduled date for next refueling shutdown.
Refuel Outage XIII began February 23,1995, 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 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 assemblics 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 l
1408 n/a I
Storage Pool (following refueling). _,
under present physical capacity of Spent Fuel 2411
_2007 Storage Pool under Licensed Capacity of Spent Fuel Storage Pool 3152 i
2014 i
l
DOCKETNO: 50-0331 DATE: 04/14/95 Unit: Duane Amold Enerev Center COMPLETED BY: Richard Woodward TELEPHONE-G191851-7318 UNIT SilUTDOWNS AND POWER REDUCTIONS REPORT h10NTil: March 1995 No.
- Date Type Duration Reason Method of Licensee Event System Comp.
Cause (1)
(flours)
(2)
Shutting Report #
Code Code Down (4)
(5)
Reactor (3) 3.
02/24/95 S
744 C
4 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 1 (Same Source)
G-Operational Error (Explain)
II-Other(Explain) l
- DOCKET NO.: 50-0331 DATE: 04/14/95 Unit: Duane Arnold Energy Center COMPLETED BY: Richard Woodward j
TELEPHONE: (3191 851-7318 Monthly Operational Overview for March 1995:
At the beginning of March the DAEC was four days into Refuel Outage XIll, having removed the Main Generator from service February 24. The reactor had been placed in cold shutdown, disassembly of the reactor had been completed, and disassembly of the Main Generator and a Low Pressure Turbine was in progress.
Removal of fuel from the reactor to the spent fuel pool began March 3 and was completed at 4:00 p.m. March 6.
Leakrate testing of all eight main steam isolation valves was completed March 2 with only one valve (the "A" inboard) requiring maintenance and re-testing. The circulating water pit was refilled March 3 following minor repairs to piping joints and cracked and spalled concrete.
At 0940 March 7, five Primary Containment isolation Valves closed, Secondary Containment isolated, and Standby Gas Treatment initiated when a lead momentarily lost contact during the installation of ajumper while performing a surveillance test on the 24 Volt DC Battery System. At the time the plant was in cold shutdown for refueling, no fuel was in the reactor vessel, and neither primary nor secondary containment was required. The next day a similar event occurred during the installation of a Temporary Modification to support maintenance.
All automatic actions occurred as designed and the isolations were reset. Actions to prevent such inadvertent automatic actuations will be reviewed with appropriate plant organizations. There was no effect on plant operation or safety. LER #95-04.
Chemical decontamination of the Reactor Recirculation and Reactor Water Cleanup System piping was completed March 15 and the reactor vessel level lowered March 16. Chemical decontamination then reduced recirculation discharge piping dose rates by a factcr of two to three times the pre-decontamination levels.
Approximately 90 curies were removed during this decontamination compared to 15 curies in past chemical decontaminations.
Reassembly of the Low Pressure Turbine began March 15. Flood up of the refueling cavity was completed March 16 and set-up began for installing the ultrasonic testing scanner used to examine the core shroud welds and invessel inspection sites. Return of"A-side" safety systems was completed March 19.
During the In-Vessel-Visual-Inspection (IVVI), a shallow six-inch indication on the Core Spray sparger piping support bracket cladding was found. A diver successfully removed the surface indication with some light erinding. The IVV1 was completed March 24.
The core shroud ultrasonic weld testing finished early on March 29. DAEC is the first plant to successfully perform the scanning of the lower two welds on the core shroud, and the entire core shroud inspection was accomplished in less than twelve days. All the welds were found to be in a sound condition.
Core reload commenced just after midnight March 29 and was completed April 3.
Licensing Action Summary:
Plant Availability:
0.0%
Unplanned Auto Scrams (while/ critical) this month:
0 Number of reportable events:
2 Unplanned Auto Scrams (while/ critical)last 12 months:
0
.