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Liner installation
The way our liners are produced at the factory ensures consistently high quality. Our products are shipped as ready-to-use, impregnated liners. Only professional handling by our partner companies at the installation site can ensure that our products achieve the quality and properties for which they were developed. Watch the iMPREG Video The unrivalled handling of our liners safeguards the quality of the end product as well as protecting equipment and facilitating the laying of the liners at the installation site. The liner system is designed to enable iMPREGLiners to be installed and cured as quickly as possible. Pipes up to 300m long can be rehabilitated using our products in a single installation. All building work - including preparation and clearing up - can be completed during regular working hours. Rehabilitation On-site measurements properly executed by the site management guarantee the utmost efficiency and safeguard costs for the building measures. In combination with a - preferably water-free - preliminary TV inspection of the pipe, this means that successful liner installation is not simply down to good luck. Instead, it is the result of careful planning and, consequently, reproducible and standard rehabilitation measures. In addition to professional planning, preparatory work also constitutes an important part of the overall solution and significantly influences the quality of the final result. Once the pipe being rehabilitated has been secured and disconnected from the grid, it must be intensively cleaned using a pressure washer. After cleaning, a new TV inspection of the pipe must take place before the liner is inserted. This is to make sure that no obstructions or cracks have been caused as a result of the cleaning process. Once the preparatory work has been approved and the go-ahead for the installation of the liner has been given, a 500µm-thick sliding film is inserted using a winch and is secured to prevent it from moving. This sliding film reliably protects the liner from being damaged during the insertion process. The liner is also inserted with a winch. Immediately after the insertion of the liner, special pressure-tight packers are assembled at the start and end of the liner. These packers contain all connections and ports required for the rehabilitation procedure being carried out. The packers are used to fill the liner with compressed air. The liner is then calibrated in accordance with the user manual. The actual curing process now takes place, either through the insertion of an air/steam mix or using UV light. All curing parameters are recorded and stored in the rehabilitation system. The recording of the temperature, pressure, time, and curing speed of the series of lights forms the basis for a high-quality rehabilitation process and acts as the documentation of the construction work carried out for the customer. Following curing, the inner film is removed and a leakage test is carried out in accordance with the stipulations of DIN EN 1610. Afterwards, the service connections can be opened and connected up and the pipe can be placed back into operation. |
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