THE MAGAZINE FOR THE DRAINAGE, WATER & WASTEWATER INDUSTRIES
MAIN FEATURE
limited impact on the local environment, the local populous and traffic flows (andwe all know what traffic hold-ups feel like, especially in rush hour).
Other advantages include:
■ High Strength Glass Fibre liner EL typically 5-10X traditional felt liner
■ ■
■ Thinwall, using less styrene in the resin
Rapid and reliable curing at rates of 0.5 to1.0m/min
Very lowCO2 emissions
■ Nowavailable for DN150-2000 ■ Can linemanholes and laterals ■ Good abrasion resistance ■ ■
■ Compact site footprint
Minimal excavation also lesswaste production, less site traffic both into and out of site, usually less noise and less of a site footprint.
Across various regions the growth of CIPP rehabilitation has been very significant.Within this, the growth of the light cure option has to some extent been quite varied. Thismay be because some countries simply embrace new technologies particularly those that are developed locally.Where there is a reticence to take up technologies thismay be because newer technologies tend to carry additional costs, at least in their early stages ofmarket penetration.
Recently there has been an increased awareness of light cured systemswith the development of UV LED systems and separate LED systems, as well as the Bluelight system., all ofwhichwill be looked atmore closely later. However,with these being relatively newto themarket there is little data available as yet as to their uptake.
iWritten by Ian Clarke entered the fray in 1999.
MARKETDEVELOPMENT As the pipeline rehabilitation industry for CIPP has developed over the years, the capacity of the liners to rehabilitate pipes of various diameters fromas little 50mmup to a fewmeters has grown
significantly.Many utilities authorities and companies nowsee rehabilitation and in particular CIPP linings as a first choicewhen it comes to assetmanagement of their pipeline networks,many ofwhich are nowin the throws
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of deterioration aftermany decades of use and in some case significant under-investment in terms ofmaintenance.
The advantages of lining options are relatively obvious. Inmany cases if notmost there is minimal need to excavate large tracts of roadway or public areas given the ability to utilise existing points of access to the pipeline such asmanholes and chambers.Where excavation is needed due to access difficulties, it isminimal as access is only required at the entry and exit locations of the lining operation. This in turnmeans that there is
For themore traditional UVmarket some figures are available, although thesemay be ‘ball-park’ estimates. Across Europe for example there seems to be something of an imbalancewhen it comes to the uptake of UV light cure lining systemswith these figures showing that the:
■ UV share of CIPP in the UK is approximately 37%
■ UV share of CIPP across all of Europe (including the UK) is approximately
61%
■ UV share of CIPP in Germany is approximately 66%(note: Germany is
believed to cover approximately 50%of the total European CIPPmarket)
■ UV share of CIPP across all of Europe including the UK but excluding Germany is
approximately 55% June 2021 | 5
Substantial pressure capability Factorymade, long shelf life
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