Main Feature
Jetchem Sprint trailer
carrying with it any muck/detritus that has been scoured from the pipe surface during the cleaning process. There is the argument perhaps that this option does allow unknown waste material to be carried to treatment plants that might cause processing difficulties further downstream, but in general as it is either surface water or foul drains and sewers that are being jetted it is likely that the materials extracted during cleaning will be as expected and cause little problem. The only real proviso here is that if huge amounts of water have been used for cleaning this may dilute the waste flow so much as to unbalance the efficient working of the treatment plant. This is unlikely given the preference for lower flow cleaning options in the UK.
The other option within this sector of jetting is the choice between the jetting unit (the drive motor, the pumps, the hose reels etc.) being either Van mounted or Trailer mounted. In recent years this choice has been driven as much by new road traffic regulation as it has by the needs of the water jetting fraternity. Increasingly manufacturers are designing units that can be van mounted in order to negate the need for the driver to hold any special driving
licences and the need for weight restriction compliance of machinery/vehicles on the road. New alloys, more compact designs and more efficient water use (lower flows perhaps) mean that driver/operators can be on the road with a regular a driving licence so reducing the cost to the contactor of vehicle training and/or retraining for new and existing jetting operatives. Where this may have a downside is that some contractors opt for the smaller, lighter units to make this saving but may still try to apply the less powerful unit to a circumstance that it is not really designed to handle. This of course can bring with it a whole new range of problems when clearances fail or even where a jetting head may get stuck in the blockage whilst trying to clear it. It is important to know the capabilities of any one jetting unit to ensure that this situation does not occur, but around this later.
The recycling option does tend to require much bigger ‘hardware’ in terms of the jetting truck simply due to the fact that it is doing two jobs at once. On the one hand there is the same jetting requirement to clean the pipeline in question. On the other the unit must have a liquid recovery system to collect, filter and provide for re-use the jetting water being used. Trucks with single tank or multi-tank options are available in this area with a variety of jetting and suction/vacuum options. Again a relatively simple web search will highlight these to all that are interested.
There are units, manufactured in Europe mainly, that offer more than one jetting option on the one chassis. As an example of the level of sophistication now on offer, the latest to be introduced to the UK by Underground Technical Services Ltd
6 drain TRADER | February 2016 |
www.draintraderltd.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80
