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Protective EntrancesShelter in place areas and vehicles protected by Hunter positive pressure systems must be maintained in a manner that prevents contaminated outside air from entering the toxic-free area (TFA). If people must come and go from the TFA, such as at shift changes or for purposes of medical evacuation, the doorways must be equipped with an airlock. The airlock (Protective Entrance -- PE or IPE) provides a safe transition between the pressurized clean shelter and the contaminated environment.Hunter Protective Entrances are available in configurations designed for both permanent and temporary shelters as well as command and EMT vehicles. These units provide a pressurized transition between the shelter interior and the surrounding contaminated atmosphere. Each unit incorporates operating controls and pressure sensors to ensure fail-safe pressurization is maintained. Clean air from the positive pressure shelter interior is used for the pressurization source. Some airlocks could serve as a decontamination center or purge areas for mass transition. Those airlocks are usually equipped with a high flow re-circulating filtration system. |
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