![]() Therefore, crack resistant PE 100-RC pipes with protective layer from the Upper Austrian plastics manufacturer AGRU were used, which were developed precisely for these extreme applications. Of course, the pipeline is heavily stressed in such a power act. ![]() ![]() The pontoon had to withstand a pulling force of 40 tons and was correspondingly secured by means of ropes from the bridge piers and from the shore.Īfter completing the horizontal directional drilling operations, the sewer pipe was pulled into the underwater tunnel with several tons of traction. On this platform, the horizontal directional drilling system was installed. In addition to the accurate drilling curve, a major challenge was the anchoring and bracing of a pontoon floating on the water surface. BS Rohrbau-Schweißtechnik GmbH performed this wash-boring with high precision. In this case, a wash-boring in the area of the sea outlet was required to lay the maritime pressure line in an even gradient. So that sewer gases can escape at both ends of a submerged sewer line through special ventilation valves and a buoyancy of the plastic pipe is prevented by gas cushion, a modern sea pressure line must be laid in a steady gradient. Horizontal directional drilling solves sewer gas problem After the two sewer pipes were welded from 12 m long AGRU Sureline III pipes with protective layer, two 800 m long pressure pipelines were stored in the water along the river until they were installed. The project started in 2015/2016 with the new installation of AGRU PE 100-RC pipes with protective layer in the eastern, 800 m long section. Two parallel laid PE 100-RC pipelines were installed in two phases. Therefore, a replacement of the old pipe was decided by a new, 3215 m long double sewage pressure pipe. Especially the beginning of the line was stressed in the past decades. In the first few hundred meters of the PE pipeline, pump pressure is built up several times a day to set the several kilometres long water column in motion. This ensures that the abrasion in both pipes runs evenly. The wastewater is pumped alternately through one of the two pipelines every day. Already when it was built in 1970, two sewage pipes OD 300 mm had been laid side by side in the lake over a length of 2.3 km in order to be able to maintain operation at least with one pipe in the incident of any rupture. Its sewage, about 1,500 m³ daily, is directed to the sewage treatment plant of the Traunsee north clean water treatment plant in the city of Gmunden via a common sea-pressure pipeline in the Traunsee lake. The community of Traunkirchen and the market town of Altmünster are home to 17,000 people. Pioneering trade fair appearances at AGRU.WELDING SYSTEMS More than 25 years accumulated experience in infrared welding technology for all AGRU piping systems: PE 100-RC, PP-H, PP-R, PP-Pure, Polypure, PVDF, PVDF-UHP, ECTFE, PFA, Poly-Flo, HV-liner piping system.Made of PE and PP for landfills, tunnels, ponds, hydraulic engineering. LINING SYSTEMS Geomembranes made of HDPE, VLDPE, LLDPE and FPP as well as drainage systems.PVDF, ECTFE, FEP and PFA for the lining of tanks and for use in apparatus engineering. SEMI-FINISHED PRODUCTS Sheets, bars and welding rods made of PP, PE, PPs, PPs-el, HDPE, HDPE-el,.CONCRETE PROTECTION Concrete protective liners and assembly profiles made of PE, PP, PVDF andĮCTFE for the protection of concrete structures from abrasion and corrosion.PURAD PVDF-UHP, PP-Pure, Polypure piping systems for the distribution of ultra-pure-water in the semiconductor, pharmaceutical and food industry.PVDF and ECTFE for industrial applications such as transport of aggressive media and contaminated sewage water. INDUSTRIAL PIPING SYSTEMS AGRUCHEM Industrial Piping Systems made of PP, HDPE-el, PPs, PPsel,.AGRULINE PIPING SYSTEMS Piping systems made of PE 100-RC / PE 100 in dimensions up to OD 3500 mm (138″) for gas and potable water supply and sewage water disposal, suitable for trenchless and sandbed-free installation.
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