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Site equipment Site equipment includes traffic safety, provision and preparation of storage surfaces for equipment and material as well as the provision of power and water supplies. The power supply can be obtained from an emergency generator or from a nearby transformer. The water supply is connected to a nearby hydrant.
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Cleaning the Sewer The section to be rehabilitated must be free from deposits and other flow obstacles. In this case it is cleaned by means of the high-pressure jetting method. If obstacles are found which cannot be removed by this method of cleaning then they are removed using a sewer milling robot. The results of the cleaning are rechecked by TV inspection and documented before the start of rehabilitation.
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Pulling in the carrier hose In this particular case, the winch cable is inserted into the section using the high pressure flushing method. The flushing hose of the high pressure flushing vehicle is transported by means of circumferential cleaning jets from the target manhole to the starting manhole. The pull-in winch is positioned above the starting manhole and the cable roller is fixed at the pipe connection in the manhole. The cable is fastened … |
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Curing the liner After the inversion of the calibration hose, the front end of the liner is fixed in the target manhole. In this particular case, a bearing block (here of pipe spindles) had to be arranged for the liner head, as the connection of the section to be rehabilitated was approximately 1.5 m above the manhole invert. The liner was provided with two steel sleeves (spiral pipe DN 250) whereby the first served for the later taking of a sample … |
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Adapting the liner to the old sewer After the leaktightness testing has been successfully completed and the plug at the lower end of the section has been removed, the water is drained out by opening the liner in the starting and target manholes. The return hose is removed from the inversion pipe and the connection between the heating supply hose and the heating assembly is removed.
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After the liner has been fitted to the manholes of the old sewer, the laterals reopened and all construction material has been removed from the manhole, the sealing element is withdrawn from the upper part of the section and the rehabilitated sewer is taken into operation. Re-usable components such as the inversion pipe and the individual hose couplings are prepared for the next use. The heating supply hoses can be used at the most for five applications, … |
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Mar 22, 2011 Lining of a DN 250 vitrified clay sewer with a flexible tube (KM in-liner) impregnated with a reactive resin, forming a pipe after curing of the resin (CIPP). |
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(Image: 19347 - Titelbild Dokumentation) Process: Stainless steel sleeve 'Stuttgarter Hülse' Title:epair of HD-PE drain pipe of nominal sizes DN 150 to DN 350 with the Location: Railway embankment Limiting conditions:
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Machines and equipment
Tools
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Site equipment Site equipment includes traffic safety, provision and preparation of storage surfaces for equipment and material as well as the provision of power and water supplies. In this case, due to the isolated position of the section along a railway line, the site arrangements involved considerable effort. On the one hand, access to the path of the pipe was usually only possible via field paths and construction roads, and, on the other hand, … |
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Cleaning the Sewer The section to be rehabilitated must be free from deposits and other flow obstacles. In this case it is cleaned by means of the high-pressure jetting method. If obstacles are found which cannot be removed by this method of cleaning then they are removed using a sewer milling robot. The results of the cleaning are rechecked by TV inspection and documented before the start of rehabilitation. Inspection Before beginning the repair works, … |
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The preparatory works are carried out in the immediate vicinity of the site vehicle. First the packer is partially inflated and placed on trestles so that the middle part is easily accessible. A PVC protective film is then wound around the packer in order to protect it from soiling from the epoxy resin. To prevent the film coming off, it is fixed to the packer by means of adhesive tape.
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After positioning the sleeve, the camera and the packer are removed from the section and prepared for the next use. |
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Repair of PE-HD drain pipe of nominal sizes DN 150 to DN 350 with the stainless steel 'Stuttgarter Sleeve' - Conclusion |
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Mar 22, 2011 Repair of HDPE drain pipes of nominal diameters DN 150 to DN 350 with the stainless-steel sleeve "Stuttgarter Hülse." |
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(Image: 18712 - Titelbild Dokumentation) Procedure: Inpipe method Title: Renovation of a DN 300 surface water sewer with the Inpipe method Location: Hospital grounds Limiting values:
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Machines and equipment The technical equipment carrying out the Inpipe procedure for this particular case consists of:
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Site equipment Site equipment includes traffic safety, provision and preparation of storage surfaces for equipment and material as well as the provision of power and water supplies. The power supply can be arranged from an emergency generator or from a transformer in the vicinity of the site. The compressor should not be situated in the immediate vicinity of the curing vehicle as the noise load in the curing vehicle caused by the air escaping from … |
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Cleaning the Sewer The section to be rehabilitated must be free from deposits and other flow obstacles. In this case it is cleaned by means of the high-pressure jetting method. If obstacles are found which cannot be removed by this method of cleaning then they are removed using a sewer milling robot. The results of the cleaning are rechecked by TV inspection and documented before the start of rehabilitation. |
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Renovation of a surface water sewer DN 300 by the Inpipe process - Rehabilitation - Inversion of the liner |
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The end of the cable protruding out of the membrane head is pulled so far out of the target manhole that it can be led over a turning roll placed on the manhole frame.
The sealing flap for guiding the cable in the curing vehicle is removed. The guiding pipe for the light source in the curing vehicle is positioned … |
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The liner is cut off approximately 3 cm in front of the pipe walling with a compressed air angle cutter. The material sample required for quality assurance is taken from the liner region inside the catch hose. The proper adaptation to the channels in the intermediate manhole is carried out in that the hardened liner is cut out to form a channel. The components in the start manhole for the inversion, such as inversion pipe (turning roll) and the guide … |
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Leaktightness testing The two sections of the rehabilitation secor of this particular case are separately tested with compressed air for leaktightness in accordance with DIN 1610. The respective section is sealed at the start and end with a sealing balloon. The required test pressure is generated by a compressor. After the pressure has been reached the connection of the compressor to the liner is uncoupled. The manometer is connected to a PC, which … |
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Mar 22, 2011 Lining of a DN 300 surface water sewer with a flexible tube (in-pipe method) impregnated with a reactive resin, forming a pipe after curing of the resin (CIPP). |
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(Image: 33651 - Titelbild Dokumentation) Procedure: DS CityLiner Title: Renovation of a DN 200 vitrified clay sewer with the DS CityLiner process Location: Road Limiting values:
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