THE MAGAZINE FOR THE DRAINAGE, WATER & WASTEWATER INDUSTRIES


CASE STUDIES


the decision was taken to opt for combination curing. Thanks to a peroxide additive, the resin used would react not only to the UV-light but also to the process heat released during the light-curing process. In order to achieve the best possible outcome during the curing, RELINEEUROPE's REE4000 UV curing system was used. This offers a maximum output of 24,000 watts in combination with the Power Cube UV core. The automatically extendable UV-light core with a lamp output of 6 x 4,000 watts is specifically designed for curing the largest hose liners. All important parameters for the curing process, such as pressure, temperature, curing speed and the actual output of all individual UV lamps used, were carefully documented in a curing report. Thanks to the ideal coordination of the Alphaliner and REE4000, curing speeds of up to 1.2 meters per minute were achieved.


Not only did the test of the Alphaliner's material properties meet all expectations, giving the rehabilitated pipe a new service life of up to 70 years, but Hamburg Wasser was also more than satisfied. Although the rehabilitation works had originally been scheduled to last eight weeks, it only took half the time expected. In spite of the disruption caused by the onset of winter, all eight Alphaliners were installed on schedule by Rohrsanierung Jensen within four weeks. In addition to a great deal of experience and professionalism, a very close and cooperative partnership among all involved is key to ensuring the high-efficiency execution of such rehabilitation projects.


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July 2021 |


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