The rehabilitation of leaking and structurally defective pipelines represents a major part of APS utility and pipeline services.
Because APS has a wide range of rehabilitation capabilities and holds regional licences for several of the world's leading rehabilitation technologies, we are ideally placed to help select the right rehabilitation solution for the right technical and commercial reasons.
Remaining independent from any one manufacturer or system enables our engineers to provide truly unbiased recommendations based solely on sound technical and commercial sense.
The internal pipeline rehabilitation systems operated by APS include the following techniques:
- Swagelining
- Sliplining
- Pipebursting
- Folded Liners
- Cured in Place Liners
- Flexible Tubing
- Man Entry Sewer, Storm Water and Tunnel Linings
- Manhole Repairs and Refurbishment
Swagelining
The Patented British Gas (BG Plc) system enabling the ultra tight fit lining of host mains with new HDPE pipe in sections of up to 1km in length. Diameters from 2 inches to 48 inches can be accommodated.
Quick, cost-effective installation saves time and money. The Swagelining system uses PE pipe which has an outside diameter slightly larger than the inside diameter of the pipe to be lined. After sections of PE pipe are butt-fused together to form a continuous pipe slightly longer than the pipe to be lined, the PE pipe is pulled through a reduction die to temporarily reduce its diameter. This allows the PE pipe to be pulled through the original pipeline. After the PE liner has been pulled completely through the host pipe, the pulling load is removed. This allows the PE pipe to return towards its original diameter until it presses tightly against the inside wall of the host pipe. The tight-fitting PE liner results in a flow capacity close to the original pipeline design.
PE pipes used in the Swagelining process are manufactured to ISO, AGA, ASTM, and API standards, so lines renewed by this process have known physical properties and an established service life. There is no shrinkage or curing, and no field chemistry is required. Polyethylene is flexible, leaktight and highly resistant to chemical attack.
Sliplining
The relining of defective gravity and pressure pipes with a new, slightly smaller structural pipe liner, usually HDPE, but segmented GRE or even steel can be considered.
Pipebursting
The size for size replacement or upsizing of existing buried pipelines and services using a hydraulic or pneumatic bursting head with simultaneous insertion of a new pipeline.
Folded Liners
UPVC or HDPE liners folded to reduce overall diameter prior to insertion and then reverted to their original size using pressure and heat to form a tight fit with the host pipe wall.
Cured in Place Liners
Resin impregnated liners towed or inverted into position, expanded to form a tight fit with the host pipe and then cured using pressure and heat or ultra-violet light.
Flexible Tubing
Ideal for mid range diameters, manhole to manhole where a reduction in diameter is permissible.
Man Entry Sewer, Stormwater, and Tunnel Linings
Panel Lok is without doubt the world's leading man entry UPVC spiral wound liner. It is fast, economic, accommodates any shape of pipe and provides a permanent structural repair.
Manhole Repairs & Refurbishment
APS operates several structural repair methods suitable for vertical round, cone shaped and rectangular manhole configurations.
So often forgotten when planning sewer renovations, the manhole represents an equally important facet of a sewer system.
Channelline Structural Pipeline Rehabilitation System
Channeline is the world’s best established and most utilised GRP fully structural pipeline rehabilitation system.
It is used in situations where a stand-alone liner is necessary in full compliance with the WRc manual.
The rigid GRP panels are manufactured to provide an extremely smooth inner surface that is highly resistant to corrosion and erosion.
The GRP segments can be provided in one piece, or multi-piece configurations that enable rapid installation in any size and shape of man entry pipeline.
Typical uses include the rehabilitation of sewers (circular and egg shaped), storm water pipelines, seawater outfalls and intakes, ducts and culverts.
APS offers a full design, manufacture and installation service for the Channeline products and additionally works with a number of licensees regionally.
