There are three main problems which utility companies and industries are facing at the moment.
The majority of the time is spent (no dig sewer) diggin
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The majority of the time is spent digging the hole and filling it in – an expensive task in terms of both time and money.
The third scenario is that the sewer pipe is basically sound but is in need of re-enforcing to guard against imminent breaches through the natural wear and tear which comes with …
The U.
Services installed later are most often found below or interwoven with the initial installations.
Ingenious, but at the same time – terrible simple.
The Advantages Of A Hydraulic Pipe Repair System Compared To Trenches And PneumaticsBy William Penworthy
The trench warfare on our streets is over. With the introduction of the hydraulic pipe repair system trenchless underground …
How CIPP Lining & Boring Equipment Is Becoming Increasingly Adaptable
By William Penworthy
CIPP lining & boring equipment is available in a range of formats, depending upon the pipe repair required, the extent of any damage, and the length and diameter of the pipe. In the same way a trenchless pipe bursting machine needs to be adapted to suit the type of pipe, since clay and asbestos concrete pipes present wholly different scenarios compared to cast iron pipes. From relatively small, plastic based pipes which serve individual houses within a quiet urban environment to the huge, industrial sized sewer pipes which may serve large chunks of a city, pipe repair, replacement or lining needs to be tackled with the right equipment to create a lasting and effective solution.
One of the common reasons why sewer pipes, gas pipes and water pipes need repairing or replacing is ground shift. Although the ground beneath our feet may appear fairly solid, the reality is that over several decades there may well be a significant amount of movement. This could be caused by anything from minor tectonic movement to tree roots, demolished or constructed buildings causing weight and pressure variations, and increased traffic over the surface.
In these instances, replacing or repairing a pipe that may be made of a brittle material such as clay, concrete or brick needs to bear in mind that any ground movement may well continue to present a challenge. The solution, therefore, is to create a repair which will withstand minor ground movement and slight shifts in pressure and position. This is particularly import at pipe junctions.
Since this type of pipe repair work is quite common, CIPP, or Cured In Place Pipe, is an ideal solution. Using CIPP lining & boring equipment the pipe can be repaired to provide a lasting solution which will cope with any ground stress or heave, whilst at the same time providing a fast and effective repair solution. In many instances it is simply not practical, either in terms of time or budget, to close off large sections of cities to dig extensive trenches to allow direct access to the pipe. Not only is this time consuming, expensive and disruptive, but there is a significant chance of causing damage to nearby pipes and cables, and in many cases proves unnecessary.
CIPP techniques vary, again depending upon the length of pipe, diameter and extent of damage. The simplest and quickest method is to insert a resin-impregnated liner into the existing pipe. Once this has been inserted along the required length, it is then inflated using hot air or steam, and cured in place. This curing stage fixes the liner to the inside wall of the existing pipe, creating a resin based protective pipe inside the existing pipe. This resin pipe will withstand significant movement, ensuring that leaks are prevented, especially along those sections of pipe most vulnerable to stress, fractures and leaks, such as major joints or junctions.
Although for small, urban based pipe repairs, the type of CIPP lining & boring equipment required may be relatively small and handled by a single contractor, for bigger jobs the techniques may be adapted. For major sewage pipes CIPP liners several centimetres thick have been used, and rather than inserting a liner, and then inflating this, an alternative technique is used referred to as reverse lining.
For reverse lining CIPP procedures a sleeveless liner is filled with a resin based mixture, and this is spread evenly over the inside of the collar or liner. One end of this collar is then fixed to one end of the pipe, and using either hot water, compressed air or steam, the remaining collar is forced into the pipe, inverting inside out as it expands. This causes the inner lining of the collar, coated with the resin, to roll inside out, fixing against the inside wall of the pipe as it does so. This technique can be used with thicker, more industrial pipe repair tasks.
Alternatively, if a pipe is not to be lined, because perhaps it is too badly damaged, or needs to be re-laid along a slightly different route, then a trenchless pipe bursting machine will be required instead. Lowered into a bore hole at one end of the pipe section, the mole, or auger drill, is then guided using hydraulic mechanisms along the route of the pipe. As it proceeds along the pipe, the auger head bursts apart the walls of the existing pipe, forcing them outwards. The new pipe is then drawn in behind the pipe bursting machine.
From small-scale household pipes to city-scale drainage systems, CIPP lining & boring equipment is adaptable, flexible and able to solve the problems without excavating huge trenches and disrupting bustling streets and businesses. Whether its a trenchless pipe bursting machine that is used, or a cured in place pipe, those above ground may be entirely unaware of the ingenious solutions going on beneath their feet.
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