Pipeline Renovation Techniques
In Situ Spray Lining
Spray lining is appropriate where pipes are structurally sound but there are problems with water quality, flow or pressure due to a build up of deposits within the pipes. The pipes are cleaned and then lined with an approved epoxy resin, or rapid setting polymeric system, which improves water quality and flow and prevents future build-ups.
DVS Pipelines offers rapid setting high build spray lining, Copon Hycote 169HB, a semi-structural lining. It is applied using traditional in situ spray lining techniques at thicknesses of three to five millimetres - at lining rates of over one metre per minute and with setting times of less than one minute. It creates a tight fit within the pipeline to eliminate any annular space and has minimal long term shrinkage characteristics. Finally, lateral connections and ferrules are coated but not covered and therefore do not require expensive secondary attention.
169HB provides a tough, ductile lining - a pipe within a pipe - that will cover small holes and provides a seal to transverse and longitudinal cracking, giving fifty year plus additional life to the pipe. The process is suitable for the lining of all pipeline materials.
DVS Pipelines now also offers Copon Hycote 169HB, a semi-structural lining designed specifically to combat ground water infiltration into the sewerage system. It is applied using, traditional in situ spray lining techniques to consolidate the strength of the pipe but with 169 SL there is no liner shrinkage, thereby eliminating the threat of ground water intrusion into the asset.