8 1 2015 Monitoring technology Visileak VSL Subject to technical changes General system description In the majority of cases district heat pipes laid underground are now equipped with operational monitoring systems The benefits are that damage can be detected at an early stage and easily located Together with the appropriate monitoring devices monitoring wires foamed into the heat insulation at the factory perform a wide variety of tasks Operational re liability and safety are increased and costs of damage are limited The following BRUGG pipe systems are factory equipped for monitoring with the resistance reference measuring method WIREM as standard FLEXWELL district heating cables PREMANT district heating pipe and CASAFLEX district heating pipe BRUGG STEEL CASING PIPE can also be equipped for this purpose on request On request PREMANT district hea ting pipe can be supplied with different monitoring wires WIREM and BRANDES are compatible systems The WIREM technology makes it possible to carry out a large number of functions with the help of the monitoring wires and devices Monitoring heat insulation for moisture already possible when the pipe is being installed Supply of informative measurement data on the condition of the heat insulation Contact between monitoring wires and inner pipe break offs or interruptions anywhere in the circuit are differentiated and displayed During operation the entry of moisture for example through weld seam faults non tight joints or external damage can be measured signalled and located not only in the area of the joint but continuously throughout the entire length of the pipe Short circuit detection Alarm signals are passed on via outputs for external alarm devices Depending on the requirements for network size and data availability a suitable system can be selected from the range of measurement monitoring and locating equipment based on the modular principle Device combinations range from manual entry of measurement data about the status of the heat insulation and manual fault location device LMS 120 through to fully automated monitoring and fault location devices available on the market with remote signalling test inquiries via dialog electronics storage of measurement data and electronic data transmitters to computers and printers in central management systems 8 100

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