| 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 |
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