ML20126E972
| ML20126E972 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 11/30/1992 |
| From: | Woodward R IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT |
| To: | |
| Shared Package | |
| ML20126E966 | List: |
| References | |
| NUDOCS 9212300064 | |
| Download: ML20126E972 (6) | |
Text
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p OPERATING DATA REPORT DOCKET-NO.:
19-0331 DATE:
12 /'a 5 /92 -
Unitt_
Duane Arnold Enerav 91011E.
COMPLETED BY Bichard Woodward _.
TELEPHONRt i319) 851-7318
= OPERATING STATUS 1.
Unit Names Duane Arnold Er.eroy Center 2.
Reporting Periods November 1992 Notes 3.
Licensed Thermal Power (MWt):
1658 4.
Nameplate Rating (Gross MWe):
565 fTurbine) 5.
Design Electrical Rating (Net MWe):
12.1 6.
Maximum Dependable capacity (Gross MWe):
11%
7.
Maximum Dependable Capacity (Net MWe):
ill 8.
If Changes Occur in capacity Ratings (Items Number 3 through 7) since the.last report, Give Reasons:
Elh 9.
Power Level to Which Restricted, If Any (Net MWe): H/h b
10.
Reasons for Restrictions, If Anyt N/h s
This Month Year-to-Date cumulativo-11.
Hours in Reporting Period 720.0 8,040.0 156,312.0 12.
Number of Hours Reactor Was Critical 639.1 6,448.9 115,237.2 13.
Reactor Reserva Shutdown Hours
'0.0 0.0
'192.8 16.
Hou-a Generator On-Line 630.3-6,370.4 112,278.5-15.
Unit Reserve Shutdown Hours 0.0 0.0 0.0 16.
Gross Thermal Energy Generated (MWH) 978,069.6 9,803,475.3 152,857,071.7
.17.
Gross Electrical Energy Generated 321,847.0 3,255,775.5 51,222,101.5
-18.
Net Electrical Energy Generated (MWH) 302,636.0 3,051,212.3 48,015,724.4 19.
Unit Service Factor 87.5%
79.2%
71.8%
- 20.
Unit Availability Factor 87.5%
79.20 71.8%
21.
Unit Capacity Facter (Using MDC Net) 81.6%
73.7%
61.1%
22.
Unit Capacity Factor (Using DER Net) 78.1%
70.5%
58.4%
23.
Unit Forced Outage Rate 12.5%
2.9%
12.5%.
- 24.
Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of each):
Five d_a.y elective shutdown sometime durina January throuah March 1193 to reinstall circulation-water cumo before Sorino.
25.
If Shutdown at End of Report Period, Est.'Date of Startups..N/A g2300064-921213 R
ADOCK 05000331-PDR-a
+
[tb-AVERAGE DAILY-UNIT-POWER LEVEL-DOCKET NO: 50-0331
-DATE: 12/15/921 Units--Duane Arnold'Enercy Center-COMPLETED 'BY: Richard Woodward TELEPHONE s - _ -- f 319 ) 851-7311-HONTH-November 1992 Average Daily Average Daily Power Level Power Level:
Day (MWe-Pet)
Day
.(MWe-Net)
-1 525.4 16
- 5.7 2
520.7 17 279.0 3
530,1 18 379,3 4
531,3 19 424,7 d
5
}lja.h 20 401,3 6
531.1 21 432,5,
'7 529.6 22 460.1 w-
^B 529,7 23 399.1
.9-527,0 24 422,5 10 528.1 2s 468,8 11 529,6 26 495,8 12 -
}]DJ 27 515,5' 13-64.Q-28
}16.2 T14
- 6,9 29 502.6
- 15
- 6.5 30
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REFUELING INFORMATION DOCKET-.NO: 50-0331 DATE: 12/15/92-Unit Duano Arnold Enerov' Center COMPLETED BY _Richarr Woodward t
TELEPHONE: (319l E51-7313
.i 1
1.- Name of' facility.
a.
Daane Arnold ~ Energy Center
!2.-Scheduled date for next refueling shutdown, a.
July 1993
- 3. Scheduled date for restart following refueling, a.
September 1993
- 4. Will refueling or resumption of operation theraafter require a technical specification change or other license amendment?
9 N/A
.5.
Scheduled date(s) for' submitting proposed licensing action and supporting information.
N/A
- 6. ImportantLlicensing considerations associated with refueling, e.g.,
new or
. different fuel design or supplier, unreviewed design or performance analysief methods, significant changes in - fuel design, new operating y n:edures.
- N/A
- 7. The number of fuel assemblies (a) in the tore, (b)~ in the spertt fuel-storage pool.
zt a.
369
- b.
1152
':. i
- 8. The present licensed spent fuel. pool storage. capacity and the size of any1-increase in licensed storage capacity that has been requested or.is-planned,.
a in' number of fuel assemblies.
a.
-2050 - Licensed. Capacity or b.
1898 under the presently. Installed storage rack capacity.
- 9. The projected-date of the last refueling that'can be discharged to the spent'
~
fuel pool assuming.the present: licensed capacity.
- a.
2000 - Licesed Capacity or
'b.
1997 under :be preecntly inetalled storago. rack capacity.-
T 5%'
y
.n
~
t i.
i
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...., -c DOCKET NO: 53-0331 DATE: 12/15/92 Unit:. Duane Arnold Energy Center-COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 UNIT SHUTDOWNS AND POWER REDUCOIONJ a
REPORT MONTH: November 1992j
'{
Tyre lDuratid.
Reason Method Licensee System.[ Comp.
Cause No.
Date~
(1).
(Hours)
~(2)
"of Event.
Code Code 1
Shutting Report #..
(4)
(5) 3 Down Reactor 3
(3)
[
1 11/13/92 F
89.7_
A 3
92-0018 NN-P High condenser backpressure. turbine 1
trip and scram caused by failure ' of 2
circulating water pump shaft.- Failure all owed the flow from :the remaining
.; i pump to short cycle back=to the. pump pit and cut off flow to the condenser.
i
.s 1 - ?: Forced ~
2 -' Reason
- 3-
. Method:
4 - Exhibit'G--
~
S: Scheduled
-A-Equipment Failure 1-Manual Instructions for Preparation off
- (Explain) 2-Manual Scram Data Entry Sheets for Licensee
. B-Maintenance'or Test 3-Auto:;natic Scrare Event Report (LER) File (NUREG-
-C-Refueling.
4-Continued 0161).
D-Regulatory S-Reduced Load Restriction 9-Other (Explain) 5 - Exhibit-1 E y rator Training &
.(Same' Source)
'i
' License' Examination F-Administrative 1 G-Operational Error (Explain)'
1
- H-Other-(Explain
. c-f L
s h
.i m
, - ~
m
~ ~,,
a
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m
-' Y'
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- ,' }
DOCKET NO:
50-0331 DATE 12/15/92 Unit Duane Arnold Energy Center.
COMPLETED BY:
Richard Woodward TELEPHONE:
(319) 351-7318
.L MAJOR / SAFETY RELATED MAINTENANCE REPORT MONTH:. November 1992 DATE SYSTEM COMPONENT CESCRIPTION
~
11/14/92 NN P
Decrease in circulation water pump motor amps indicate pump separated-'
itself from anotor.
i N...
11/14/92 AD FT Installed ferrite chokes and shielded wire cable from transmitter-to J box to insulate reactor recirculation flow transmitters from radio frequency cignal interferonce :
E (8/17/92 scram) 11/16 92 IG JI Following scram, erratic. spiking.of
/
intermediate' power ' range monitor.
(IRM) signal causad by severe high voltage fluctuations in failed power' supply.
i.
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_g DOCKET NO.4 50-0331 DATE: 12/15/92 Unit Duane Arnold Energy Center COMPLETED BY: Richard Woodward TELEPHONE: (319) 851-7318 Monthly operational Overview of November 1992 During-November the DAEC operated at an_ overage gross capacity factor of 79% (Design Electrical Ratir.g).
The plant operated at essentially full thermal power operation until 03:27 a.m.
. November 13 when a scram occurred due to a high. condenser back-pressure turbine.
The loss of vacuum was caused by the failure of the
'A' circulating water trip. shaft which allowed the flow from the remaining pump to short cycle back to the pumn pump pit and cut of f flow to the c ondenser.
Four (4) safety-relief valves lifted momentarily in response to the scram from hig'a poweu.
Plant and operator response to the transient was as expected.
The generator was off-line for 89.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> to remove the failed pump and was synchronized to the grid at 21:10 November 16.
Operating with the one remaining clreplation pump (approximately 55% of full circulation flow): the dry winter.
weather has permitted near full electric output.
The cause of the pump failure was determined to be bolt failure on the pump's to the pump column, ken bolts which held the impeller bell housing. The analysis of the-pump shaft bro and other damaged pump pump top wocks (impeller bowl assembly) com p nents is continuing to determine the cause of the bolt failure.to re-install the' pump waspump prior-The sent to the manufacturer for repair. DAEC is planning to Spring, 1993.
(LER #92-10)
The following table summarizes November plant operation and categorizes losses in terms of average MWe, capacity factor, and full power equivalent hours.
No. of.
Full Power
% of 565.7 Equivalent MWe-HWe Hours Losses dues to Weather, Control Rod Movements Surveillances, &
Metering 0.3 0.1%
0.4 Off-Line - Circ pump failure 70.5 12.5%
89.7
-Losses due to degraded Heat Rate and operating at less than full
-thermal capacity 47.9 8.5%
61.0 Actual Gross Electric output 447.0 79.0%
568.9 Design Gross Electric output 565.7 200.0%
720.0 On November 19,'1992, while the plant was at 84.7% power and with the "B" control building chiller.out of service for maintenance, the "A" control building chiller tripped and could not be promptly restarted. The ineperability of both chillers-caused a loss of' control building air'cenditioning whose safety function is to control temprature to ensure control room habitability and equipment operability.
The "A" chiller tripped on low oil pressure caused by-low oil level. After adding oil, the "A" chiller was successfully restarted-and operated with no further-problems. The operating: logs that raonitor chiller operation :are being changed to more closely monitor chiller oil level and pressure. The plant was in a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> administrative LCO during the approximately five hour period' that both chillers were inoperable. ihere was no significant increase in control-building temperatures and no offect on-portonnel safety or' safe operation of the plant. 'LER# 92-19)_
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