O liner Technology Pte Ltd

	Introduction

Cured-in-place pipe (CIPP) is a jointless, seamless, pipe-within-a-pipe rehabilitation method. It has the capability to rehabilitate pipes ranging in diameter from 150mm to 2500mm.

	Methodology

O Liner Technology uses 2 methods for CIPP Process:

Water Tower Inversion:

Scaffolding to create a tower for inversion
With the use of water boiler to cure the resin

Steam Inversion:
- Using a liner gun to invert the liner
- With the use of a steam boiler to cure resin

	Process

A resin-saturated felt tube made of polyester is inverted or pulled into a damaged pipe.
Hot water or Steam is used to cure the resin and form a tight-fitting, jointless and corrosion-resistant replacement pipe.
During the curing process of any resin system, volatile organic compounds (VOC) and hazardous air pollutants (HAP) are released.
Service laterals are restored internally with robotically controlled cutting devices.
The rehabilitated pipe is then inspected by closed circuit television (CCTV).

	Advantages

Does not require excavation to rehabilitate a pipe.
Lateral connections are also restored without excavation via a remote controlled device that drills a hole in the liner at the point of lateral connection.
Has smooth interior and no joint.
Can repair a pipe with bends, special design considerations must be taken into account to prevent wrinkling and stretching.
Can effectively reduce infiltration and leaks in pipeline system without digging.

Pipelines before and after rehabilitation

Pipelines before and after rehabilitation with laterals reinstated
and sealed using Top-Hat.

Equipment for Cured – In-Place Pipe