There are a number of different Cured In Place Pipe (CIPP) systems currently available worldwide. The CIPP system where the curing is initiated by exposure to light has been in use for about 15 years and is now proven technology. Curing a liner by exposure to light of a specific wavelength has a number of advantages: 1. pre impregnation under closely controlled factory conditions with a comparatively long storage time 2. short set up time on site 3. minimal access required 4. does not disturb adjacent services 5. inner and outer foils reduce styrene emissions to a minimum and prevent resin migration up laterals 6. easy handling - the liners are pre packed, sealed and crated after manufacture ready for use 7. fast curing 8. no environmental problems associated with disposal of hot process water 9. controlled degree of cross linking 10. close fit minimises reduction in bore 11. high strength. The quick and controlled installation process is of great importance in today's congested streets and working environment.
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