| Preparatory work: | 
				      					      | - | Shut down operation of sewer | 
					      					      | - | Thorough cleanig of level reach | 
					      					      | - | Removal of hindrances and remedy of individual pipe defects (cracks etc.) | 
					      				      | Main work: | 
				      					      | - | Pulling in the prefabricated seamless GRP - Liner by winch | 
					      					      | - | Calibrating the Inliner by air pressure | 
					      					      | - | Curing the Inliner by UV - light | 
					      				      | Final works: | 
				      					      | - | Cutting the inliner at the manholes | 
					      					      | - | Opening of the branches | 
					      					      | - | Density control | 
					      					      | - | Start operation of rehabilitated sewer | 
					      				      | Advantages: | 
				      					      | - | Long durability | 
					      					      | - | Minimum reduction of cross - sectional area | 
					      					      | - | High strength | 
					      					      | - | High chemical and mechanical resistance | 
					      					      | - | Quick execution time | 
					      					      | - | Minor obstruction of traffic | 
					      					      | - | Very short time of dewatering | 
					      					      | - | Seamless construction | 
					      					      | - | Storage possible even in hot regions for half a year |