Consulting:
Project: Construction site day at
E.ON Thüringer Energie AG:
New high pressure pipeline to supply biogas The selection of plastic pipe materials and systems for underground installation has extremely long‐term implications. Designed for a service‐life of several generations, pipelines are scarcely accessible for retrospective modification once they have been installed:  High‐value surface occur  Building construction follows underground activities  Repair costs in case of damage can be a multiple of the original investment amount  Diversion of traffic and blocking of roads is scarcely possible with today’s high traffic densities For these reasons, planners, project clients and operators of piping systems are confronted with the challenge of gathering the best possible knowledge of the potentials and limitations of pipe materials before a decision is made. In addition, the costs for underground engineering must also be taken into account. Actual pipe‐system costs rarely make up more than 15 % of total costs, whereas the underground work and restoration of the surface account for 85 % or more. The use of trenchless installation methods thus presents significant cost‐
reduction potentials. The egeplast team of consultants will be happy to help you in every decision‐making phase. Contact: technik@egeplast.de, +49.2575.9710‐0 Construction site day at E.ON Thüringer Energie AG: New high pressure pipeline to supply biogas In front of an audience: new high pressure pipeline to supply biogas. Construction
site day at E.ON Thüringer Energie AG.
The new high pressure pipeline was ploughed in front of the audience. Around 35 people from the supply industry watched while E.ON Thüringer Energie AG installed a new high pressure
pipeline for biogas using the ploughing method. On the basis of technical and economic considerations, the decision
was made to use HexelOne® raised pressure polyethylene pipes. In July 2011 E.ON Thüringer Energie AG
demonstrated the implementation of the construction project during a construction site day.
Magdala service pipe project – Niedersynderstedt biogas plant
In future the new pipeline will connect the biogas plant in Niedersynderstedt to the regional high pressure network of RSO Magdala via a service pipe with an approximate length of 4.5 km. To do so the installation had to cross beneath a 220 m stretch of the A4 motorway and a high voltage overhead line. Particular points associated with the section of pipeline included a waterway crossing and a long distance cathodically protected water pipeline. In Magdala the new pipeline was integrated into an existing MOP 16 system. The material selected was the HexelOne® Raised Pressure PE system with dimensions 110 x 10.0 mm: • This system is suitable for use at pressure level PN 16 and has been approved by TÜV SÜD. • The pipes were supplied as coils. This enables simple and fast assembly using conventional welding procedures (butt fusion welding/electrofusion welding procedures). The welder does not require any additional qualifications for this. • The pipe is resistant to the influences of external power sources, for example from high voltage power lines or cathodically protected third party pipelines. Due to this, the choice of route is simplified, for example the protective strips of high voltage overhead lines could also be used as pipe routes. • No extra measures are required for cathodic corrosion protection. There is minimal crop damage using the ploughing method. In the case of agriculturally used land this frequently led to greater acceptance for the building project on the part of land owners. Installation using the ploughing method moreover, enabled further significant cost savings to be achieved. Particularly in rural areas it was possible to make savings not only through the very high installation capacity. There was also greater acceptance
among owners and tenants of agricultural land, due to the fact the intervention in these areas was kept to a minimum; compensation for crop growth was reduced. For the 220 m long section passing beneath the A4 motorway the new pipeline was inserted in a protective pipe. Two cable protection pipes were also installed at the same time. E.ON Thüringer Energie AG offers its support for test installations during the further development of polyethylene high pressure pipelines. ▪ Participants followed welding work on the pipe system with great interest. HexelOne® raised pressure pipes can be connected using conventional welding methods Gunter Grabner of E.ON Thüringer Energie AG introduced the 40 participants to the planning of the construction project in advance. Consulting: Project:
Special application: demineralised process water
The selection of plastic pipe materials and systems for underground installation has extremely long‐term implications. Designed for a service‐life of several generations, pipelines are scarcely accessible for retrospective modification once they have been installed:  High‐value surface occur  Building construction follows underground activities  Repair costs in case of damage can be a multiple of the original investment amount  Diversion of traffic and blocking of roads is scarcely possible with today’s high traffic densities For these reasons, planners, project clients and operators of piping systems are confronted with the challenge of gathering the best possible knowledge of the potentials and limitations of pipe materials before a decision is made. In addition, the costs for underground engineering must also be taken into account. Actual pipe‐system costs rarely make up more than 15 % of total costs, whereas the underground work and restoration of the surface account for 85 % or more. The use of trenchless installation methods thus presents significant cost‐
reduction potentials. The egeplast team of consultants will be happy to help you in every decision‐making phase. Contact: technik@egeplast.de, +49.2575.9710‐0