In addition to the installation of its products, O-tek offers solutions that enable network operators of water supply, sewerage and general industry, rehabilitate their existing infrastructure pipelines to solve the problems they perceive as imminent and minimize leakage, filtration and contamination that occurs in water duct systems or waste fluid systems.
With both methodologies O-tek rehabilitates aqueduct and sewerage lines:
CIPP (cured in place pipe): Rehabilitation of pipes without digging
CIPP (cured in place pipe) is a technique that seeks to restore or rehabilitate potable water pipes, rain, sanitary industry, without digging, eliminating this way water infiltrations and exfiltrations, root penetration, chemical substances, contaminant fluid leakage points, pressure Losses and possible internal corrosion of the water network.
Any type of pipeline with diameters between 100 and 2000 mm, can be coated and rehabilitated by this technique.
How does depresses work?
This process involves an inside out polyester coated sleeve with a waterproof film; this is impregnated with a thermosetting resin. This sleeve is tailored to the required extent and necessity for recovering a portion or section of a network.
The sleeve is introduced by a chamber, inspection box or other existing access to the network or system to be rehabilitated, a water column formed by a reversing pipe, is pushed along the pipeline, inverting the sleeve and then strongly pressing it against the existing pipe walls. After this process, the water used for the inversion of the sleeve is heated by a boiler, creating a chemical reaction on the resin that obligate it's solidification forming this way a brand-new pipe on the interior of the existing one prolonging its useful life for up to 30 more years.
- Minimum or no digging.
- Quick and easy installation.
- Faster execution time.
- The coating adjusts to the shape of the pipeline forming only one pipe through all of its length.
- Decreased network maintenance.
- Higher resistance to corrosion and abrasion.
- Better accessibility in difficult areas.
Applications of CIPP
- Elimination of roots that are attracted by the humidity existing in the interior of the pipelines.
- Elimination of concomitant fluids or chemical substances leakage.
- Hydraulic capacity increase.
- Pipelines corrosion and abrasion protection.
Sliplining (or tunnel-lining): Conventional pipe sliding
With the Sliplining methodology the installation times are reduced thanks to the capacity of manufacturing variable lengths (any up to 14 m). The reduced time of installation means lower costs and time of interruption of the piping service that is being rehabilitated.
How does the process work?
This system is based in the introduction of a GRP (Glass fiber Reinforced Plastic) in the interior of the existing pipe, this is why this method is used for diameters that allow access to the operators to its interior.
The pipe is introduced by some acces shafts repaired for the task and is transported to its final installation site. Once this pipe is installed the next is up, the assembly usually ends with the feeling of the annular zone between the new and the existing pipe with a sand or cement grout.
This way we obtaine a completely new pipe providing the system with the best conduction characteristics of resistance of the market.
- Renews and rehabilitates pipes without the need of taking them out or replacing them totally.
- No need for excavation.
- When we introduce new pipes within the existing system we take advantage of the hydraulic conditions of the fiberglass.
- No loss of operation capacity of the system while is rehabilitated.
- Renovation system that does not required to take out the piping to restore it but it is introduced within the other.
- The pipe diameters can be bigger than other systems.