Identical to the standard Strata Refuge Chambers in operation, tunneling chambers can be attached to the facility’s main air compressor and electrical power sources for indefinite supplies of breathable air and power. The air supply passes through a specialised filtration system that performs a complete cleansing before entering the main chamber. Electrical power operates the chamber lights, siren, carbon dioxide scrubber, atmospheric monitoring system and optional cooling system.
For emergency back-up, and for stand-alone operation, Strata Tunneling Chambers are equipped with a standard 48 hour battery and air supply. These systems are scalable to customer specifications.
Backup Air Supply
The Strata ActiveAir™ carbon dioxide scrubber utilizes spill-proof soda lime cartridges to remove CO2 and compressed oxygen cylinders replenish oxygen levels. Flow-rate meters on each cylinder control oxygen flow rates. Strata ActiveAir is equipped with two Trolex Sentro 1 gas detectors that continuously monitor O2 and CO2 levels inside the chamber. The detectors will sound alarms when gas levels rise or fall outside of a safe range. The scrubber is also equipped with a timer that is set according to the number of occupants in the chamber and will sound an alarm when it is time to exchange the soda lime cartridges