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EXPORTING THE RIGHT SUPPLY OF HEAT AND KNOWLEDGE
ALARM SYSTEM Innovative product development to meet the ever-changing requirements of the market and use of the latest technology are important aspects. This is why the district heating system in Estonia was provided with the newly developed isoAlarm 4500. The alarm system will in future alert system operators via text messaging and e-mail to any moisture ingress in the insulating polyurethane foam, allowing VKG Soojus AS to repair any fault before damage to the pipe system is sustained. This ensures safe and stable operation of the installation. TRAINING AND SUPPORT FROM ISOPLUS isoplus operates on the basis of a “total quality” concept, where we do our utmost to provide our customer base with a quality experience for the full duration of our partnership, right from the very first contract until the pipes are in the ground and the installation is up and running. In Estonia, the partnership has been all the closer in that the Estonians had no prior experience of installing a transmission pipeline with the dimensions in question. At isoplus we have therefore also taken charge of the necessary training of supervisors and personnel from VKG Soojus AS, as well as instructing the sub-contractors’ staffs in how to assemble and install the joints and use a foaming machine. To see the project through to its full and proper conclusion, isoplus also dealt with practical problems, such as, e.g., provision of generators and foaming machines.
Incidentally, it was the sizeable production capacity, quality and technical capability that led to VKG Soojus AS selecting isoplus Denmark as supplier to begin with. The delivery to VKG Soojus AS does not just involve supply of district heating pipes, but electrical fusion joints as well. All mantle joins are executed using electrical fusion, a technology which ensures that the system is provided with the safest joint on the market – and with full documentation covering the entire assembly process. To ensure that everything is executed in accordance with current standards, isoplus has taken charge of all static calculations for the pipe system, and we have also produced the requisite project drawings. In addition, the contract also provides for a monitoring system, electrical pre-stressing, and the overall design of the pipe system. All project drawings relating to the procedures for electrical pre-heating have also been executed by isoplus. STATIC COMPENSATION ON 30 SECTIONS Pipe-laying in the 17 km long channel using pipes of DN 500 dimension imposed specific requirements of its own. Due to the large pipe dimensions and the installation’s high maximum temperature of 1400 o C the system had to be subjected to electrical thermal pre-stressing. Where pre- heating of this type is performed, the system’s axial stress can easily be reduced to around half of that of a system which is laid cold.
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