The ventilation of tunnels is extremely important not only when the tunnel is being used but also while it is being built.

DMT develops for tunneling work sophisticated ventilation and monitoring arrangements for supplying air and detecting the release of noxious gases and also protective arrangements for dealing with combustible gases and reducing dust.

Our services include:

• Calculation of gas inflow from the surrounding rock and of dust concentrations
• Measurement of gas flow in rock formations
• Execution of hazard estimates
• Execution of safety relevant acceptance tests
• Calculation of required airflows
• Determination of design and size of special ventilation systems for supplying air and removing dust as well as of fans for ventilating and removing smoke from tunnel systems
• Training of personnel in the safe and proper handling of ventilation and monitoring equipment