Workshop: Sustainable Rehabilitation of Supply Pipelines applying Trenchless Replacement or Close-fit Lining method
Leaking oil, gas or water pressure pipelines force utility companies to decide whether to repair, renovate or replace the defective pipes. The main decisive factors are the degree and type of damage, the sustainability of the method and the resulting rehabilitation cost. Modern trenchless pipeline rehabilitation techniques minimize traffic disruption, noise emission loads, dust and surface disruption, danger of damages to existing pipes and cables, intervention in ground water and soil, storage and transportation of the excavated soil. The choice of techniques ranges from punctual repair over partial renovation to complete renewal of the defective pipeline. In the workshop application range and technical conditions of different renewal and rehabilitation techniques are described in detail and compared to each other.
Static pipe bursting with GRUNDOBURST is an approved method for trenchless pipe replacement. The old pipe (from ND 50 on) is destroyed underground and the new pipe, often of larger diameter, is pulled in simultaneously. With the static pipe bursting method gas and water pipes (pressure pipes) as well as sewage pipes can be replaced. New pipes of almost any material (plastic pipes or metal) can be installed. Daily capacities of 150 – 300 m are possible.
Due to its high pulling force being optimally transferred, the GRUNDOBURST system can also be used for the renewal of pipes applying close-fit lining techniques such as the pipe reduction method With the reduction method the outer diameter of the new PE long pipe is reduced mechanically using a special device (reducing dye) to allow it to be pulled through the old pipe and to press closely against its inner wall without annular space. Up to now hydraulic cable winches with up to 400 kN pulling force have been used to pull in the new pipe.
The technical details of the pipe renewal and the pipe reduction method are described using practical examples of large-scale pipeline replacement projects in in Norway, Switzerland and Australia. Another workshop topic is the general cost saving potential of these trenchless techniques compared to punctual repair or open trench methods compared to open replacement. In addition the participants are given the opportunity to discuss the application conditions and limits of the the different techniques.
If you wish to participate in this free workshop, please register yourself at the Tracto-Technik exhibition booth during the Pipeline Technology Conference or in advance through Ms. Anne Knour, email@example.com, Phone +49 27 23 / 8 08 - 177.