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ian@nodigmedia.co.uk
involve the need for cranes for loading and unloading the containers which adds to the complexities of site work. In general such machines may be transported using containers as this allows the whole system to be moved to and from site with the minimum use of vehicles which again is an increasing requirement to minimise both the impact of the installation on the general populous and the environment surrounding the site. Cranage will also be needed to the movement of materials on site such as pipes etc. So, the selection of the wrong crane at the start could be the cause of many a poor site performance.
It should also be noted that there will be a need for some support systems that may or may not be vehicle mounted or towed on a trailer or flatbed. This could include generators, pumps winches, storage and recycling tanks and a number of other job specific items. Each may or may not require special vehicle assistance and licencing.
Recycling systems for spoil and or drilling muds also require the use of spoil transport vehicles that should be capable of transporting ‘wet’ solids without the potential for spillage that might cause environmental damage or simply one awful mess. This will also mean that either the trucks will have to be some form of tanker or for dryer spoil will need to have some form of top covering to prevent ‘wind’ spillage during transport.
There also need to be a balance between the equipment brought to site and the number of vehicle movements that will be needed to service the site so it is important to ensure that in the planning stage this is taken into account. The larger the footprint of for example a microtunneller recycling system the
greater it’s storage capacity. But it may need a larger vehicle to bring it to site. This in itself may be restricted by the access to the site thereby limiting the size of equipment that can be used. Of course this means that if a smaller system is used it will have less capacity and so require more vehicle movements in the longer term of the project. It is a complex problem that needs to be very carefully examined to ensure efficient working whilst maintaining good relations with local residents and other road users.
VEHICLES FOR PIPE REPLACEMENT OPERATIONS
First it should perhaps be obvious that the vehicles for new installations works can be just as useful for replacement works if the old pipeline is being excavated and the new pipe placed in the same trench.
However, increasingly there is a shift to online pipeline replacement using trenchless techniques. These include pipe bursting, pipe cracking, pipe splitting, pipe eating/reaming and pipe extraction.
For most of these operations there is a need for follow us on twitter @draintrader | October 2017 | drain TRADER 5
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