ML14030A289

Monthly Report on the Meteorological Monitoring Program at the Braidwood Nuclear Generating Station

ML14030A289
Person / Time
Site:	Braidwood
Issue date:	03/31/2012
From:	Murray & Trettel
To:	Exelon Nuclear, Office of Nuclear Reactor Regulation
Shared Package
ML14030A308	List: ML14030A264 ML14030A266 ML14030A267 ML14030A268 ML14030A269 ML14030A273 ML14030A274 ML14030A275 ML14030A276 ML14030A278 ML14030A279 ML14030A280 ML14030A284 ML14030A285 ML14030A286 ML14030A287 ML14030A288 ML14030A289 ML14030A290 ML14030A291 ML14030A292 ML14030A293 ML14030A294 ML14030A295 RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2008 RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2009 RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2011 RS-14-029, Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2012 RS-14-029, Braidwood Station Kankakee River Fish Monitoring Program, 1991-2013 - Tables Requested by the NRC to Describe the Number of Fish Caught by Sampling Gear and Species at Each Monitoring Location RS-14-029, Braidwood Station Kankakee River Fish Monitoring Program, 2010 RS-14-029, Braidwood Station, 2011 Benthos Monitoring and Historical Fish and Benthos Comparisons RS-14-029, Braidwood Station, Kankakee River Fish Monitoring Program, 2012 RS-14-029, Employment and Land Requirements for Alternatives to Byron Units 1 and 2 and Braidwood Units 1 and 2 - Lr Chapter 7 Energy Alternatives RS-14-029, Final Report: Characterization of Unionid Communities Near the Braidwood Nuclear Station Kankakee River Discharge Location RS-14-029, Final Report: Unionid Relocation Near the Braidwood Nuclear Station Kankakee River Discharge Location RS-14-029, Investigations to Determine Presence of State-Listed Species of Fish and Freshwater Mussels in the Kankakee River Near the Braidwood Nuclear Station Warmwater Discharge Channel RS-14-029, Monthly Report on the Meteorological Monitoring Program at the Braidwood Nuclear Generating Station RS-14-029, Plan Completion Report for the VB 1 Area RS-14-029, Plan Completion Report for the VB 2/3 and Pond Area RS-14-029, Plan Completion Report for the VB 4 Area RS-14-029, Plan Completion Report for the VB 6 Area RS-14-029, Plan Completion Report for the VB 7 Area RS-14-029, Standard Operating Procedures for Braidwood Station'S Fisheries Monitoring Program in the Kankakee River and Horse Creek RS-14-029, Status of Fish Communities and Sport Fishery in the Kankakee River and Tributary Streams: 2005 Basin Survey RS-14-029, Transmittal of Annual Report on the Meteorological Monitoring Program at the Braidwood Nuclear Power Station 2010 RS-14-029, Transmittal of Application for an Incidental Take Permit for Threatened or Endangered Species and Conservation Plan
References
RS-14-029
Download: ML14030A289 (18)

Text

a .W Monthly Report on the Meteorological Monitodng Program at the Braidwood Nuclear Generating Station March 2012 prepared for Exelon Nuclar Warrenville, Illinois 60555 by Murray and Tret.J, Incorporated 600 First Bank Drive, Suite A Palatine, Illinois 60067 (847) 963-9000 e-mail: mtfeathercommand.com web: httpA/www.weathemommand.com For Eeo p Reviewed By:F Date: 5-/0 Z--Z.Murray & Trettel, Inc. 600 Fiat Bank Drive Suite A Palaine, IUinals 60067 (847) 963.9000 w Table of Contents Section Description Pae I Station Action Items ..........................................................

1 2 Equipment Maintenance

........ .........................

I 3 Data Recovery Summary .............................................

2 4 Summary of Billings .....................................................

3 5 Data Analysis ...............................................................

4 6 Computer Processing

......................

4 7 Annual Report Preparation

..........................................

4 Murray & Trette, Inc. 600 Fiat Bank Driw, Std- A Palatne, llinob 60067 (847) 963.9000 1. Braidwood Station Action Items Pendina Action Items Problem Recommended Solution Raw-none-date Exelon was notified of problem or date of Monthly Report where problem was first reported 2. Equipment Maintenance at Braidwood A regular scheduled visit to inspect the equipment was made on the 140 of March. The Routine Site Visitation Log, a record of existing onsite conditions, was completed during the visiL A copy of this log is included in this report On the 14th, a calibration of the meteorological tower was performed.

A copy of the log is included in this report.On the 28h, 2 wind direction sensors were repaired, calibrated and given new bearings.On the 29', the 34 ft. wind direction sensor was replaced due to high readings.No other problems were encountered with the equipment during March, and at the end of the month, no problems were evident at the site.Murray & Trettel, Inc. 600 Rat Bank Dq, SuitkA Paladag linois 60067 (847) 963-9000 3. Data Recovery The record of data recovery year-to-date is summarized In Table 1.Table I Braidwood Nuclear Station Data Recovery Summary March 2012 Hours in Month = 744 Hours to date = 2184 Hours in year = 8784 This Month Year to Date Measurement Valid Lost Edits Valid Lost Edits Hrs % Hrs % Hrs % Hrs %34Ft Wind Speed 203Ft Wind Speed 34Ft Wind Direction 203Ft Wind Direction 30Ft Temperature 199Ft-30Ft Delta-T 30Ft Dew Point 3Ft Precipitation 741 99.6 741 99.6 740 99.5 741 99.6 741 99.6 741 99.6 741 99.6 3 3 0.7 2181 99.9 3 0.7 0.0 2181 99.9 3 0.0 4 19.8 2179 99.8 5 3 0.0 2181 99.9 3 3 0.0 2181 99.9 3 3 0.0 2181 99.9 3 3 0.1 2181 99.9 3 7.4 0.0 0.0 0.0 0.7 743 99.9 1 0.5 2183 100.0 1 0.A V E R A G E

• 99.6 99.8* average of priority parameters (all except dew point and precipitation)

Joint Recovery of Speed, Direction and Stability This Level Valid hrs Lower 740 Upper 741 Month Lost Recovery hrs %4 99.5 3 99.6 Year to Date Valid Lost Recovery hrs hrs %2179 5 99.8 2181 3 99.9 Data Recovery Scores Summary March Year to Date Braidwood Nuclear Station All Exelon Sites 0 12 0 40 Mvrmy & 'flrtte4 Ic. 600 Pint Bank Driti, Suite A Minat 60067 (847) 963.9000 4. Summary of Billings for EQuipment Repairs. Replacement Parts. and Other Work not Included in Fixed-Cost Maintenance Aoqreement

-March 2012 Braidwood Descriotion Meteorological equipment maintenance Meteorological parts, materials

& contractor services Meteorological System Storage$$$Cost 453.00 319.37 100.00 Total for Month: Year to Date Total:$ 872.37$' 2,781.30.urray& & 4,ttel .m. 600 FhRs B=mk Dnvue Suite A UI=iis 60067 (847) 963.9000 5. Data Analysis (Data Reduction and Processing)

The Microtel was routinely interrogated to obtain hourly average data of wind speed, wind direction, ambient temperature, differential temperature, and dew point temperature.

Wind sigma (standard deviation of wind direction) and precipitation data were also obtained.

Missing Microtel values were replaced with recorder data, when available.

A professional meteorologist then reviewed the data, calibration findings, maintenance reports, computerized quality control checks, and other information and determined which data were valid. Only valid data were retained in the data base.6. ComDuter Processina Computer programs were run to generate summary tables of the hourly averages of the meteorological data as well as other statistics based on the monthly data record.A table of means and extremes of the measurements recorded during the month is included in this report. Wind direction shears (variance of wind direction between levels) are also included in the table. Relative humidity was calculated using ambient and dew point temperature measurements.

7. Annual Report Preparation Joint frequency stability wind rose tables of hourly data are generated quarterly and will be included in the annual report. These tables indicate the prevailing wind direction, wind speed, and stability classes measured during the period of observation as well as the joint frequencies of occurrence of the wind direction, wind speed, and stability classes.Murray & Trettel, Inc. 600 Fm B=k Drve, Site A Palaan, lne ,is 60067 (847)963.9000 Braidwood Generating Station March 2012 Niss Valid Mean Max Min Hrs Hrs Parameter 3 Re 54.3 84.6 21.0 40.7 63.9 8.1 61.4 100.0 26.7 9.3 29.2 Calm 15.6 42.8 3.0-0.5 5.6 -2.3-1.2 36.0 -111. 0 3 741 3 741 3 741 34Ft W 203Ft -W 3 3 741 741 199Ft -.ýy 203 -34 FT Dire 3 741 11 733 34Ft Sigma Theta (deg)203Ft Sigma Theta (deg)3 FT Precipitation IN Monthly Total ....Max 24 Hour Total Max 1 Hour Total .16.3 48.0 6.0 10.2 49.0 1.0 4 3 740 741 1 743 1.31 0.31 0.18 There were 744 hours0.00861 days <br />0.207 hours <br />0.00123 weeks <br />2.83092e-4 months <br /> in March Table prepared on 5/ 1/2012 at 10:25 Braidwood Station Differential Temperature Distribution (degC/100m) 3/2012 199-30 ft-7.5-7.0-6.5-6.0-5.5-5.0-4.5-4.0-3.5-3.0-2.5-2.0-1.5-1.0-0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT DT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT LT-7.5-7.0-6.5-6.0 *o-5.5-5.0--4.5-4.0-3.5-3.0-2.5-2.0-1.5-1.0-0.5 Q.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 0 0 0 0 0 0 0 0 0 0 0 30 90 117 185 138 80 25 32 15 10 3 4 4 3 2 2 0 1 0 0 0 NRC Stability Classes Unstable Neutral Stable TOTAL NO. HOURS 143 309 289 741 TABLE PRODUCED 05/01/12 10:26:11 Exelon Contract Number 455465 E2 7/10 R-28 Bmidwood Site Routine Site Visitation Log Date: 3 -1I4 z.-Begin: 2 7c.6 CST End: 11:3J 0 CST Operation of digital recorder 0 OK Microtel light blinking 03 YES 0 0 Heater System Operational (Oct-Apr)

J; YES E0_Air Cond. System Operational (May-Sep)

[3 YES P M Digital Recorder Readings (Taken at O0'141 CST)SPEED DIRECTION TEMP 30ft. (D- b -°F 34 ft.I Qg f.ý'I _mph 14*5 I .2 mph DýAT-01 aF DP 5'17 -61"F:o Speed and Direction values agree with visual indications?

0 Yes 03 UTD 0r-BRain gauge check made at b 3<' CS" 1 No rain gauge check made due to precipitation Tips Poured ._ __ Tips Recorded ._ _'sychrometer Measurement Readings (Taken at C 0o) CST)Dry bulb: ( I F Wet bulb: ___, F Dew Point (calculated):

5(4P -F"ower Lights O.OK 0 UTD 0 _-.,OMMENTS:

Technician:

I AM-:. H-lb-J, MuMwa &f Trel, Inc.

• 600 Ftm Bmk Drive, Ssdr, A. Pnad/ne/ irwis .60067 2 (847) 963.-9000 Exelon Contract Number 455465 Braidwood Meteorological Calibration Date: 3Iq-2_E4 7/10 R-28 Page 1 of 7 POWER SUPPLIES+15.OOOV+/-t 0.150V A:+15. 07 1V B: + 1%4l. q(ot V-1 5.OOOV 10 O1560V A:5~IZ V B:- QM V Signal Conditioners I Digital Recorder.Sional Conditioner Voltage Out Diaital recorder Specifications AF AL PRCPLO ,OOD V PRCPHI !L-,1 V V-V AL EQUIV AF AL 3 ft.O .8 " ..b " " " I.oc,' /0 ii -- 6 WS ZERO ,aJtLV*"SPAN v ZERO V WD SPAN V T LO ,+/-/>V T HI 51- OýV THI-LO L'9259V DPLO..i/b V DPHI I, _qv DP HI-LO -t-, 9o V 34 ft .VO2-6 mph O0Z -mph -=-mph (,0-J v '2- a-mph 'iq,'i mph -= mph V /.4 ,- a a___v "-2jo * -a V" V -.2 1 .G 7 -- "- 2 ) .0 ' o"-A3 -2.-22 -a-vV4tt&, ° 7.G,{a * -- o"" V lZ(,..3 ° /i 400o -" °v- v Signal CoTnd.0.000v

• 0.050v 5.0OOV +/- 0.050V 0.015V +/- 0.025V 5.OOOV

• 0.025V 0.0O0V +/- 0.1 00V 5.00OV +/- 0.1IOOV 5.OOOV +/- 0.050V 5.OOOV

• 0.050V 0.015V

• 0.025V 5.OOOV +/- 0.025V 0.OOOV* 0.IOOV 5.0O0V +/- 0.I1OOV 5.OOOV

• 0.200V AL EQUIV +/- 0.01" AL EQUIV 0.01" AL EQUIV+/- 0.1mph AL EQUIV +/- 0.1mph AL EQUIV +/- 10 AL EQUIV + 1°AL EQUIV +/-0.1OF AL EQUIV +/- 0.1OF AL EQUIV +/- 0.1°F AL EQUIV +/- 0.1°F 203 ft.WSZERO,. 01 5 V -V -P.. 3.mph 0,3 mph -= mph WS SPAN _$, (,- V -L V Zb6. c) mph 99,* mph -.mph WDZERO, 017 V -V/I, a 7. 0 -WDSPAN 5 .0 1 V -V S542./ 0 _____ °ATLO 7 0(7 V -V-ae a -/6,34) ° 0 ATHI t'-j V -V I),g a 9.80 o --AT HI -LO S 07-t V -V AL EQUIV + 0.1mph AL EQUIV +/- 0.1mph AL EQUIV+/- 11 AL EQUIV + 10 AL EQUIV +/- 0.1°F AL EQUIV +/- 0.1"FTveuA 1nc.

• 600 Fint Bank Duv, SuiteA

• Palade, NiRnis .60067 it (847) 963.9000 Exelon Contract Number 455465 E5 7110 Braidwood Meteorological Calibration R-28 Page 2 of 7 Date: 3 TOWER MEASUREMENTS Ambient 0] Ice Bath Temperatures 30 ft. Amb,. 199 ft. AT AF AL AF AL Measured 71, OF -F -Z7 OOF OF Recorded -?0.7e OF _- "F -IJ,°5F " OF Difference , 21 -F O F -'I D F -- OF Specification 0.5F *0.18OF Winds 30 ft. dew point AF AL'- °F.°7-7 F °F*2.7oF WS stall Forw. WD Revr. WD Tracking/wear 3 4 ft, AF AL-O_3 mph 0mph 0A<.203 ft.AF AL O.L2 mph 0 3 _mph X3 3& %5'155 *Specificaton 0.3mph

• 0.45mph 30/3630

• 50 183 +/- 5 Comments:

3q 105~~~~~~~

Jt11hUC 1v 't9 E:j~lti~ w ZL rb; .&Q-7Oa~4 Q .^ot).eiM', 0 1,7~3 Mw,'a & Tutsel, Inct -600 AMt Bank Ddv4 Sidta A -Paltzina IO~noab 600673I (847) 963.9000 Exelon Contract Number 455465 E6 7110)n R-28 Page 3 of 7 Braidwood Meteorological Calibratic Date: 3.-L-t. lZ Dates of Last Wind Sensor Bearing Replacements:

34 fLW3I (6 ros.) Wind Speed: "I Z- "- 1 *,4 (12 mos.) Wind Direction:

4B77 "' " iM-12..30 It 19,91I Aspirators:

." 0/C Operation of De-ce Heat Lamp System (Aug-Mar):

b).._Operation of Rain Gauge: A r- Tips Poured -Tips Recorded___

Debris screen: In 609) Installed Removed UPS Check; O.V Tower Lighting Good Fair Poor Tower Condition Good Fair Poor Beacon 03 E0 0] Paint 0 0 0 Side lights E0 0:3 Wiring E] 0 ID Flasher 0 1 Shelter condition Note: Calibration Instruments:

"* q f.f Next Cal Due AF = As Found Psychrometer

-S/N -A 'AI.u- .,ej 7-AL = As Left Digital multimeter

-S/N -lb "3-AP-eJ / 1tV_ Z&i v--=- no change (AF=AL) Digital4wtImeter

-S/N -41r o2-Vo Oer' -FS = Full Scale rechniclans:

A 141kr Mop ,Y-Comments: Signature:

__MwM, r Tr¢etzc, Inc. 600 Fiat Bank Drve, Sadz ,A .Pakndne Illnois .60067 2 (847) 963.9000 Exelon Contract Number 455465 ET 7/10 R-28 Page 4 of 7 System Response Check Site: Braidwood System: Microtel Low sChek 34! WS 203' WS 34' WD 203' WD 30' T 199' AT 30' DP Chpecke Expected 10.0 -0.4 10.0 *0.4 54+/-2 54 t2 -7.50 *0.5 -8.00 -0.18 -7.60 +/-0.5 Response As Found Response qq9.59- .*o_ _ _As Left ..... -Response Mid Scale 34' WS 203' WS 34' WD 203' WD 30' T 199' AT 30' DP Eheckte Expected 50.0 +0.4 50.0 +/-0.4 270:2 270+/-2 50.00 +/-0.5 0.00 +/-0.15 50.00 *0.5 Response As Found qqq Rsponse __ _ __ _ _ q~O.AsLeft -.. --Response .... .Full Scale 34' WS .203' WS 34' WD 203' WD 30' T 199' AT 30' DP Check ________l__

REpeoned 90.0+/-0-.4 488+/-12. 488+/-12 8.00:1:0.18 107.60+/-30.5 Response As Found gq a Response /07_ 7.As Left -----Response _ _ _Date: Murray & Tmeir, I=. -600 FiR Bank Dnrit Sui A. Palatne, iuis -.60067 W (847) 963-9000 Exelon Contract Number 455465 E8 7110 R-28 Page 5 of 7 System Response Check Date- S -I q / -.7 Site: Braidwood System: Process Computer-English Units LowScale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Expected 10.0 +0.4 54t2 10.0 +/-0.4 54*2 -7.60 +/-0.5 -8.00,0.18

-7.60+/-0.5 0.10+/-0.01 Response ....As Found Response _ _ _ 55., C --.,.S" -1.98 -7./, 64,1 As Left -.. -. .-Response Mid Scale Y4011 Y4012 Y4013 Y4014 Y4016 Y4016 Y4017 Y4019 Chec 34' WS 34' WD 203' WS 203' WD 30' T 199' AT 30' DP Precipitation Expected 50.0+/-0.4 270*2 50.0 0.4 270+/-2 50.0 +/-0.5 0.00+/-0.18 50.0 ,0.5 0.50 +/-0.01 Response ..As Found Response 70 -. a <i4 tq.7o 7 o.o0 PL._o __As Left --, -Response Full Scale Y4011 Y4012 Y4013 Y4014 Y4015 Y4016 Y4017 Y4019 Check 34' WS 34' WD 203' WS 203' WD 30' T 199' AT* 30' DP Precipitation Expected 90.0+/-0.4 486 +/-2 90.0+/-0.4 486 +/-2 107.60 +/-0.5 8.00 +/-0.18 107.60 +/-0.5 0.90+/-0.01 Res.p~onse

..Response q.73 /o7.30 79(, -j.c c.9o As Left- ---- -----Response Muvray & T=~4 Inc.- 600 FIrns Bar& Dthw, Swdce A.- Palatine Iflrnoiz -60067 V(847) 963-9000 Exelon Contract Number 455465 Eg 7/10 R-28 System Response Check Page 6 of 7 Daw 3-1 L) Site: Braidwood System: Process Computer-Metric Units Low Scale Y4000 Y4001 Y4002 Y4003 Y4004 Y4005 Y4006 Check 34' WD 34' WS 30' T 199' AT 30' DP 203' WD 203' WS Expected 54 +/-2 4.5 +/-0.2 -22.00 t0.3 -8.50+/-0.1

-22.00 +/-0.3 54 *2 4.5 0.2 Response .......As Found Respo..s. -l -q. '4]- z,oT 13 Z 1,9(oL4 -zi ,' , ,-5" As Left -' ----Response Mid Scale Y4000 Y4001 Y4002 Y4003 Y4004 Y4005 Y4006 Check 34' WD 34'WS 30'T 199'AT 30'DP 203'WD) 203'WS Expected 270:+/-2 22.35*0.2 10.00 *0.3 0.00 +/-0.1 10.00 +0.3 270 *2 22.35 +/-0.2 Response As Found Response 22,5 7 q./ 0.00 /L.o5 :&., --As Left ....-.Response Full Scale Y4000 Y4001 Man Y4002 Y4003 Y4004 Y4005 Y4006Mti'/

Check 34'WD 34' WS2(' 'e 30'T 199' AT 30'DP 203'WD 203'WS "S y-I/Response 486 +/-2 AGXP-4Of+/-0.2 42.00 +0.3 8.50+/-0.1 42.00+0.3 488+/-:2 0.2 As Found 12-. ____Response -.O As Left ....Response A&L W-)ý'ýl ý-Muray & Tr=4gJ Inc.- 600 Fiat BwAn Ddiw_ SwatA TLC JM hb -J~ .60067 2(847) 963-9000 Exelon Contract Number 455465 E10 7/10 R-28 Page 7 of 7 System Response Check Date:_3- i q-Is Site: Braidwood System: Control Room Indicators Low Icl ChLoe 34' WS 203' WS '.34' WD. 203' WD 34' T 199',&T 30' DP Expected 10 *1.0 10 *1.0 54+/-2 5442 -7.60 .1.0 -8.00 +1.0 -7.6:1.0 Resp.onse As Found Response 1 b -- 6.As Left Response Mlid Scal_M Sck 34' WS 203' WS 34' WD 203' WD 34' T 199' LsT 30' DP Expected 50+/-1.0 50 +1.0 270 +/-2 270+/-2 50.00 *1.0 0.00 *1.0 50.0 +1.0 Response _As Found Response As Left , -_ --Response Full c 34' WS 203' WS 34' WD 203' WD 34' T 199' tAT 30' DP Check ....__ _ _ __ _ _ ___ _ __ _ _Expected Response 90 +/-1.0 90 *1.0 486+/-2 486+/-2 107.60+/-1.0 8.00 +/-1.0 107.6:1.0 As Foundq_Response _____ go___ _____ 108___As Left -* -, Response .,_ _Mwura & Tr"ttcl Inc. -600 Fiut Bank Driu, Suite A .Palztine.

Ilinis .60067 9 (847) 963-9000 Equipment Maintenance Log-8 In-house work" Field work Exelon Contract Number 455465 Al 7/10 R-28 IDate(s):

-2 ,,2Weekday 03 Weekend / Holiday Page _ of i Site:9,w Reason for work I/ Nature of Problem: e " -M , I 9. v I m to .j-.r A5AI %S&T bb 0 (~ &;A hT "IT he A *IT&( IM -6(IS es so&ot fl6tj57 Ne)f-354 !hL bac4~r.on Work Performed

/ Action taken: / jS -A II 4 eA 4 ) .I +/- 5, -W K lIt SeAWSOR A 1 T 0 0 2..Cp A I SO I t~s7qIII ca Arý j/~eqýs +'1 A6-it ~6Po-r of lu. Ve.~~ 17"rsceo ;4 &a. Seeor'Unit S/N _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _Work Completed?

f' Yes 03 No Calibrated?

2 Yes 0 No 0 NA*_ Meteorological Date Technician Rea Hours OT Hours E3 Micmtel 2.2 a 9, 17.. M T A 0 1: Visibility monitor/fog warning signs 03 Other Labor 3 r ot Travel: ml $ tolls Misc: ,a 3.-90 Muwray &Tretttelnc~

600 Rins Bank Dviv, SwrtA -Pa~aztne fi~nais -60067 9 (847) 963.9000 Equipment Maintenance Log o In-house work ,' Field work Exelon Contract Number 455465 Al 7/10 R-28 jDate(s): -Z VL--2 Weekday 0l Weekend /Holiday Page I ofL Site: ?-ý.w Reason for work/ Nature of Problem: TIXh. -; Fr TWO L-xA c if% S C, I Aj Ote Work Performed/Action taken: .-fl ACrc VU 3-I 4T WO .5i,\A.Y)A.tT 6\T1% ou S b Measudng Test Equipment Used Unit SIN Work Completed?

Pf Yes 01 No Calibrated?

R2'Yes E No I NA__ Meteorological Date Technician Rea Hours OT Hours 3 Microtel 3-.2 q-.. I I M .M Visibility monitor/fog warning signs_-5 ____ 2- 0Other____ ____ ___ __ _ ___ ____ __ ____ ___ Billable u Labor rag _ t Travel: bQ m, s toiss Misc: Mwmy & Trettne Inc. 600 FiRnt Bank Drw, SuiteA. Palatine, Ilinois 60067 2 (847) 963.9000