Tunnel boring machines can be over 100 meters long and their complex control systems require cabinets stretching. The drilling machine and all control and power supply units mustv comply with explosion protection requirements and regulations, which may vary depending on the country and region. The ignition protection equipment used must function reliably and have the certification required at the operating location.
Due to the size of the control cabinets, the only type of protection usually considered for tunnel boring machines is purge and pressurization. Owing to their size, conventional enclosures are used that have been modified for use in explosion-protected environments, for example by sealing to ensure the necessary degree of protection (IP). In addition, a special roofing to protect against dirt will be retrofitted along with reinforcements intended to prevent overpressure.
Bebco EPS® purge and pressurization systems are used in hazardous areas in the process automation industry. Continuous monitoring of conditions inside the enclosure provides reliable explosion protection for a wide variety of applications. The comprehensive portfolio of globally certified purge and pressurization systems makes it easy to specify and select the right solution for your process.
Learn more about the different systems and possible solutions in this video!