2012 Michigan Winter Operations Conference

Transcription

1 2012 Michigan Winter Operations Conference Feel the Burn! Using Liquids to Keep Winter Roads Clear Before We Get Started! 1

2 WE MUST REMEMBER - PLOWING IS STILL THE BEST METHOD OF REMOVING SNOW CHEMICALS ARE USED TO PREVENT ICE FROM FORMING AND TO BREAK THE BOND BETWEEN ICE AND THE PAVEMENT SALT Common De-Icing Materials TREATED SALT SALT BRINE CALCIUM CHLORIDE MAGNESIUM CHLORIDE INHIBITED CHLORIDES ORGANICS SUPERMIX 2

3 SOME PRO-ACTIVE METHODS WE CAN USE TO PREVENT BONDING ARE: PRE-WETTING ANTI-ICING WHAT IS THE DIFFERENCE? 3

4 APPLYING LIQUIDS DIRECTLY TO THE SALT ON BOARD EACH TRUCK (PRE-WETTING) AND DIRECTLY TO THE PAVEMENT PRIOR TO EACH EVENT (ANTI ICING) AS SHOWN BELOW. PRE-WETTING ANTI-ICING Pre-Wetting It reduces scatter by as much as 30% and keeps the material on the road It instantly starts the brine making process by introducing moisture It can reduce the effective temperature of the salt 4

5 Why Prewet? DOES IT WORK? Salt use vs Liquid use 5

6 Pre - Wetting 6

7 Different Types Of Pre-wet Units 100 gal 250 gal PRE-WETTING CHANGES 750 gal LIQUIDS, LIQUIDS AND MORE LIQUIDS 7

8 New Spreader Design It crushes the salt and then pre-wets it at rates up to 90 gal/ton THE SLURRY GENERATOR 8

9 PRE-WET 9

10 TWO ADDED TANKS FOR ADDITIONAL LIQUID New truck with 970 gallons of Liquid 10

11 Monroe followed this design and installed two flood nozzles 430 gallon tank installed inside the truck body 11

12 ANTI-ICING PRO-ACTIVE TREATMENT PRIOR TO AN EVENT CONDITIONS MUST BE CORRECT TO ANTI-ICE Bonding Prevention IT TAKES 4 TIMES MORE SALT TO REMOVE ICE THAN PREVENT IT! 12

13 Know your Expectations Treated vs. Untreated 13

14 Anti Icing Application Decision Flowchart Review/monitor weather forecast. Is snow or frost predicted within the next three days? Yes No Is rain predicted before the snow? No Yes Do not apply anti icing materials. Is the pavement temperature 15 degress or greater? Yes No Do not apply anti icing materials. Is the dewpoint at least 3 degrees below the air temperature? Yes No Do not apply anti icing materials. Is the relative humidity level 70% or less? Yes No Do not apply anti icing materials. Is the pavement dry? Yes No Do not apply anti icing materials. Are winds less than 15 miles per hour if loose snow is present? Yes No Do not apply anti icing materials. Does suffcient time exist for pavement to dry before the pavement temperature falls below 20 degrees? Yes No Do not apply anti icing materials. Has a visual inspection or RWIS confirmed sufficient anti icing material residue does not exist on the pavement? Yes No Do not apply anti icing materials. Apply anti icing material (brine or brine blend) at 40 gallons per lane mile. Anti-icing Using A Blend 14

15 SALT BRINE RESIDUAL 48 HOURS 24 HOURS 72 HOURS SUPERMIX - AFTER ONE WEEK 15

16 These roads were anti-iced on Thursday January 5, before the weekend Frost event January 9, 2012 Snow event January 12, The material still worked after 7 days These are low volume roads 16

17 DE-ICING USING DIRECT LIQUID APPLICATION THIS IS A SUPERMIX BLEND USING LIQUIDS FOR DE-ICING Conditions must be correct for using liquids in deicing. Warm pavement temperatures, low or no additional snowfall rates, short route cycle times, no blowing snow. 17

18 PARKING LOTS MANUFACTURING SALT BRINE 18

19 Brine Makers 19

20 TRADITIONALLY - SALT WAS ADDED THEN YOU ADDED WATER HANDS ON LABOR INTENSIVE 20

21 THERE ARE MANY DIFFERENT TYPES AND PRICE RANGES Cleaning Out The Mess 21

22 IF IT S MINED FROM THE GROUND IT WILL HAVE DIRT AND STONES NEWEST BRINE SYSTEM 22

23 WHAT MAKES IT SO DIFFERENT - THE COFFEE POT METHOD 23

24 Augers out Deposits 24

25 25

26 Chloride Cocktails The Art Of Blending Liquid Deicers Organics 26

27 BLENDING Combining Chemicals In-House Components Salt Brine 80% Organic 10% Calcium Chloride 10% Now completely automated THREE SEPARATE PUMPS FOR THREE PRODUCTS. COMPLETELY AUTOMATED ON DEMAND SYSTEM 27

28 New Truck Fill THE OPERATOR CONNECTS THE HOSE, ENTERS HIS TRUCK NUMBER, ENTERS AN AMOUNT AND IT FILLS IT PRECISELY ACCORDING TO THE PREDETERMINED FORMULA 28

29 WE CAN ADJUST, FLOW RATES, FILL AMOUNTS RATIOS AND CHEMICAL SELECTION ALL BY TOUCH SCREEN. THE SYSTEM KEEPS A COMPLETE HISTORY OF ALL TRANSACTIONS 29

30 THE SYSTEM CAN ALSO MAKE BLENDS FOR STORAGE IF DESIRED. FILL RATES, RATIOS AND BATCH PROGRESS CAN ALL BE MONITORED This is the screen that shows the volume in storage, mixing ratios, volume pumped and all the other goodies. 30

31 BLENDING HISTORY LOCAL, REGIONAL AND NATIONAL SIGNIFICANCE 31

32 LOCAL, REGIONAL AND NATIONAL SIGNIFICANCE Washington state, Fort Collins, Denver, Argentina, United Kingdom and Austria Fort Collins, Colorado 32

33 Washington DOT Argentina 33

34 ARGENTINA ANTI-ICING ROUTE 7 USING SUPER MIX DESPITE 39 INCHES OF SNOW THE ROADWAY WAS OPEN IN 12 HOURS ANTI-ICING RESULTS 4 DAYS LATER!! 34

35 ANTI-ICING EQUIPMENT Latest nozzle design 35

36 Wheelpath flood nozzles Streamer nozzles Multi-purpose anti-icing nozzle configuration 36

37 500 GALLON SLIDE IN UNIT TANDEM AXLE SLIDE IN UNITS MCHENRY COUNTY CITY OF MILWAUKEE 37

38 COMBINATION VEHICLE Roll-Off Unit 38

39 Trailer Units 39

40 CONCEPT VEHICLES INDIANA DOT OHIO DOT IOWA DOT Don t Forget To Calibrate 40

41 You Don t Know Unless You Try! 41

42 THANK YOU! Bret Hodne City of West Des Moines (515)