“Coming together is the beginning. Keeping together is progress. Working together is success.” A quote from Henry Ford. ProKASRO and iMPREG took this saying from the automobile pioneer to heart in mid-March 2021 in Reggio Emilia, Italy, and in turn together became pioneers in the sewer rehabilitation industry with the installation of a DN 2000 UV cured lining in Italy, which is claimed to be a milestone in sewer rehabilitation.
Faster and in less time
In 2018 ProKASRO Mechatronik GmbH developed the new high-performance POWER UV system with the goal of curing liners of unprecedented size in the near future. By coupling three KASRO POWER Jumbo UV cores with an output of 3 x 6 x 2,000 W and with the help of a newly designed packer for diameters of DN 1,600 to DN 2,000, the basis of a system was created by equipment manufacturer ProKASRO. By increasing the standard 1,000 W to 2,000 W UV bulbs and the resulting maximum output of 36,000 W, pulling speeds, especially in large diameters, and therefore also the curing times, can be drastically reduced.
Further development in large profile rehabilitation
Since the summer of 2020, the liner manufacturer iMPREG has expanded production with a correspondingly larger impregnation system up to DN 2000 and developed the necessary raw materials with the various suppliers for foils and glass. In this way, iMPREG is consistently continuing its tradition of leading the way around large profile rehabilitation. Nothing stood in the way of the cooperation between ProKASRO and iMPREG to implement the plan to install a DN 2000 liner. The ready-to-install liner was picked up from the factory in Ammerbuch with a heavy-duty transporter and arrived at the construction site in Italy at the same time as the installation equipment, so that lining work could start immediately without any loss of time.
Designed for large dimensions
An iMPREGLiner GL16, with a wall thickness of 11 mm (without peroxide), a total length of 164 m and a significant weight of 22 t was used. The iMPREG Liner GL16, with very good material characteristics and a new fibreglass design, enables finely nuanced gradations of wall thicknesses. At the same time, there is a technical benefit, as the liner makes it easier to deal with larger dimensions. So perfect requirements for the DN 2000 construction site, where the team of ProKASRO and iMPREG application technicians in Italy, was deployed on March 17, 2021. The client Consorzio di Bonifica Dell ‘Emilia Centrale instructed Campania Sonda Srl in cooperation with the installation subcontractor Danphix S.p.A. to rehabilitate an irrigation canal with a diameter of two meters using UV lining. The old pipe to be rehabilitated was stable and had no deformations. Small cracks and leaky sockets, which in the long term would have endangered the adequate water supply for the adjacent wheat fields through exfiltration required prompt action. By installing the liner, the sewer could be sealed and the supply of sufficient water to the agricultural area assured before the summer months where extreme heat could endanger the harvest.
Milestone in trenchless sewer rehabilitation
After preparation of the construction site with liner and packer installation, calibration of the liner and insertion of the KASRO triple jumbo cores, curing of the DN2000 liner was completed in just four hours. A milestone in sewer rehabilitation has been set and everyone involved is more than proud to have participated in this event. Thanks to the combination of the new POWER UV rehabilitation system from ProKASRO and the GRP liner from iMPREG, as well as the professional site preparation from Danphix, the task, unprecedented anywhere in the world, was mastered with flying colours and at record speed. www.prokasro.de
