| Capacity: |
Diameter of pipes
burst: |
50-600mm |
Diameter of pipes
to install: |
50-600mm |
Types of pipe
burst: |
Clay,
Cast/Ductile Iron |
Max length of
pipe to install: |
200m |
Types of pipes
install: |
MDPE or
PVC |
|
MPC's
no-dig pipe replacement methods are quicker, cheaper
and cause far less disruption than traditional open
trenching methods.
It is ideal for all urban applications
where an existing pipeline has exceeded it's useful
life. This system can be utilized beneath buildings,
roads, rivers or bridges and avoids traffic delays;
thus any interruption of supplies or inconvenience to
residents and businesses is kept to a minimum.
Sewage and gas mains often suffer
structural damage due to corrosion, tree root infestation,
pipe settlement or because of inaccurately laid pipe
joints.
Repair to these pipes has placed
a heavy financial burden upon the utility companies
and subsequently, the end consumers. This repair work
has been estimated to run into billions in the U.K.,
Germany and France and of course affects virtually every
country in the world.
One of the most cost effective
methods of replacing these pipes either size for size
or, as is often the case due to increased consumer demand,
upsizing them is Pipe Bursting.
By using this system the old water,
sewage or gas main is shattered into small pieces and
pushed laterally into the surrounding earth. The original
pipe diameter is replaced or upsized by using an expander
and the replacement PE or PVC pipe is then towed into
the new bore hole.
With the aide of Bentonite/concrete
slurry, the new tunnel can be consolidated by incorporating
the pipe fragments into the mix. This also protects
the new pipe against scratches or damage during fitting.
A twin capstan hydraulic winch guides
the hammer through the old pipe and can break through
even the toughest joints.
The chief advantage of this system
is being able to replace the pipe with one of a bigger
diameter without having to dig up the old main.
Hydraulic System:
Starting from a pit just 2.20m long
and only 0.6m wide, pipes can be installed in both directions.
A thrust power of 250kN enables obstacles in the old
pipeline to be overcome.
When reversing, the bore profile
is expanded to accommodate the new pipe. Expanders are
available from ND75 up to ND200. Multi-way PE pipes
can be pulled in directly from the pipe coil trailers.
Small pits are excavated at convenient
positions 100m apart so that 200m of pipe can be burst
at any one time. By launching from the centre pit, whilst
the rods are being pulled back installing the new pipe
in the first 100m length, the rod string is fed into
the other, second section of the pipe to be replaced.
By repeating this exercise, lengths of over a 1000m
can be in one week by one gang.
MPC own both hydraulic
and pneumatic systems and offer a complete contract
Pipe Bursting service which is both cost-effective and
environmentally friendly.
Summary of Advantages:
1) Pipes made from fracturable
materials such as clay, non-reinforced concrete, cast
iron, plastic and thin walled steel can be replaced.
2) New pipes of equal or larger carrying capacity
can be installed.
3) Simple to operate and requires and limited amount
of capital equipment.
4) Short length machine are available for Pipe Bursting
from manhole to manhole.
5) For water, sewage and gas pipes.
6) Wide choice of machine diameters with practical
accessories
|
