CDC - MWS Water Shuttle Ops.

What three factors are used to measure the efficiency of an MWS apparatus? correct answer: Filling Time Dumping Time Travel time between the dump and fill sites What are the two methods for determining a total flow rate for an individual MWS? correct answer: 1. Actual Testing 2. Formula Calculation What procedures are used when using the actual testing method? correct answer: 1. Position/park MWS so its ready to begin dumping into a portable tank. 2. Start clock when dump valve is opened. 3. Clock will run until the MWS returns to the dump site. 4. Clock is stopped when MWS is back in the proper position to dump it's next load. 5. Use: Amount of water dumped divided by the trip time to find the Total Flow Rate. How is the amount of water dumped calculated? correct answer: The tank size in gallons minus ten percent. The ten percent accounts for water that may have spilled or remains in the tank after the dump valve is closed. As an example, what is 10% of a 5,000 gallon tank? correct answer: 4,500 Gallons TFR= 5,000 - 10%/Trip Time TFR= 4,500/Trip Time If the amount of water dumped out of a MWS is 4,500 gals and the trip time took 10 minutes, what is the TFR? correct answer: TFR = 4,500gal/10min TFR= 450 gpm for 1 mile shuttle op. Suppose the dump site and fill site are located 1 mile apart. A 2,000 gallon MWS apparatus is able to make the round trip in 5 minutes, what is the total flow rate? SHOW WORK correct answer: 360 gpm When using a series of formulas what are the two time elements that divide the shuttle op. correct answer: Travel time Handling time TFR = Amount of water dumped/ Travel time + Handling Time What is the formula for Travel Time? correct answer: Travel Time (in minutes) = 0.65 + (1.7)(Distance in Miles) What is the formula for Handling Time? correct answer: Fill Site Time + Dump Site Time Fill site time = (time in min. + [tank si