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Q. What is Robotic Cutting?

A. Robotic cutting is the automated process of removing or dividing material located in drains into small parts by means of a small robotic machine fitted with a diamond milling head or blade.

 

The robotic cutter is a powerful solution to remove mineral deposits such as concrete and grout deposits, intrusions such as steel bars and rubber rings and also organic obstructions such as large tree root intrusions from large diameter pipes. Diamond milling heads can also provide limited processing of cast iron material. 

 

DrainTech Solutions robotic cutter has an exceptional reach and can be driven up a line to a length of 220 metres. Most of our competitors can only achieve up to 100 metres. This means we can perform cutting more effectively without the need to remove the cutter and reinstall throughout the job.

 

Material that is cut out from the line is removed via vacuum excavation or hydro-blasting.

Q. What is Pipe Rehabilitation? (also known as Pipe Relining or Lining)

A. Pipe Rehabilitation or Relining is the process of installing a one-piece liner within the existing pipe. This liner is made up of a one-piece woven sock impregnated with resin. The resin lined sock is pushed down the existing pipe and forced against the sides of the pipe. It adheres or 'bonds' to the shape of the old pipe and hardens to form a brand-new pipe, within a pipe. The new pipe has all the qualities of a new pipe, without the disruption of digging up and relaying or replacing the line.


Pipe relining can be sectional, where the liner is placed on a 'shuttle' or packer and is sent down the line to repair a section of broken or damaged pipe. Or, pipe relining can be complete, lining entire lengths of line in a continuous run.


Pipe relining is advantageous in many ways:

  • Most repairs can be undertaken within a matter of hours not days
  • No need to remove trees
  • No need to dig up driveways or paths
  • Guaranteed never to have tree root issues again within the relined sections of pipe
  • Suitable to repair small sections of pipe work or complete lines
  • Proven process for drain line repair and renewals world wide

It is suitable for:

  • Broken pipe lines
  • Repairs from 1m to 100m in length
  • Pipes with sizes that range from 40mm - 300mm
  • Dislocated pipes and joints
  • Reducers
  • Pipe junctions
  • Down pipes
  • Multiple Bends of45 and 90 degrees
  • P and S pipe bend traps

Read more on our Pipe Rehabilitation Services.

Q. Where can I get information about the Epros and Sanikom Methods of lining?

A. DrainTech Solutions are pleased to provide methodology downloads for both Epros and Sanikom Methodologies. A complete package of information is available upon request. 

Q. What are the advantages of relining over a traditional repair?

A. The no-dig systems offered by Sydney h2o Blasting are environmentally friendly alternatives to conventional pipeline rehabilitation, which involves substantial digging. No-dig technology contributes to energy savings and climate protection by avoiding dust from open construction and carbon dioxide emissions from traffic disruption. No-dig technology also reduces or removes interference with existing infrastructure, reduces equipment needs and ultimately saves time and money.

Read more on our Relining Services.

Q. Is relining a quicker repair solution than excavation?

A. We use Sanikom and  epros® lining products to complete all repairs and renovations as it is very user-friendly and economical both in terms of time and value for money. Depending on the type or cure method, cure times can be up to 50% less than other resin systems in the market. The resins are easy to handle, show virtually no shrinkage and stand out for their good mechanical properties and chemical resistance after final cure.

The benefit to relining and sectional repair is that it is trenchless and means less disruption and mess. 

 

Q. What is a Sectional Repair?

A. Trenchless rehabilitation can be classified as either ‘sectional renovation’ or ‘complete renovation’. Sectional or part repair involves the installation of a patch or short liner to restore the integrity of the pipe or joint, whereas complete renovation of sewers and pipe runs involve ‘cured-in-place’ pipe lining techniques or consistent sealed coatings. Both methods for the repair of both man-entry and non-man entry sewer lines are a proven, sophisticated economical and technical alternatives to traditional repair techniques that involve digging, providing substantial extension to the service life of the system.

Q. How does a Sectional Repair work?

A. A renovation packer carrying resin-based fibreglass matting is pushed or pulled to the point of repair, of which the exact position is determined beforehand by CCTV inspection. Once the correct position is reached, the packer is inflated causing the packer to expand, impregnating the fibreglass mat to the host pipe. A permanent bond between the fibreglass mat and the host pipe wall is created. After the resin cures, the packer is deflated and removed from the pipe.


The repair covers the full area of the compromised pipe section without obstructing the service flow. This ‘pipe-in-pipe’ system becomes integrated with the host pipe and fully meets hydraulic requirements. The repaired pipe section is inspected using CCTV camera and a leakage test performed.

Q. What is a Lateral Connection Repair?

A. Lateral connection repair is a sectional repair method for defective sewer pipes and is used in ‘no-dig’ applications. A packer carrying a resin-wetted ‘hat profile’ is pushed pulled to the point of repair, of which the exact position is determined beforehand by CCTV inspection. When positioned at the point of repair, the packer is inflated and the retracted finger extends towards the lateral junction and is forced against the host pipe of the junction. Resin migrates into the defective areas creating a permanent bond between the fibreglass and the host pipe. The hat profile seals the space between the two pipe systems with its rim, while the liner in the main pipe functions as a short liner. Following cure of the resin, the packer is deflated and the packer removed from the pipe. The repaired section is inspected and using CCTV camera and a leakage test performed.

Q. What is a Complete Renovation?

A. The Complete Renovation process is a method for the complete relining of entire pipe runs in sewer systems. It is a ‘no-dig’ application. A flexible tube of synthetic and/or glass fiber resin is inserted into the host-pipe run through a manhole or access pit using an inversion unit. Compressed air is used to transport the liner to the point of repair. Once the resin cures the liner forms a tight frictional fit with the host pipe wall. The ‘pipe-in-pipe’ system is integrated with the host pipe and fully meets hydraulic requirements.

Q. What water systems is relining suitable for?

A. Relining is suitable for repairing sewer, stormwater, cold and hot water services, trade waste, potable water, flow and return hot water systems, gas services, fire hydrants and systems, sprinkler systems, HVAC and any piping system or fluid transfer system. Our systems can be used in almost every type of material from pipe sizes ranging from 12mm to 1000mm or larger.

Q. Does Sydney H2O Blasting offer a warranty on lined pipes?

A. All liners are product warrantied for a minimum of 50 years. Warranty does not extend to mechanical damage caused by excavators or other invasive works or ground movement.