In petrochemical plants, oil & gas production and wastewater treatment facilities, there is a potential for gas exposure accidents. One of the most dangerous gases is hydrogen sulphide (H2S). Protection against H2S is particularly challenging. The gas is extremely poisonous and, at concentrations over 1000 ppm, people die immediately. Uniteam Gas Safe Shelters can be designed to handle H2S concentrations over 25 000 ppm!
Uniteam H2S Shelters provide a safe haven for personnel to take refuge in the event of a major H2S and CH4 release. People can stay in the shelter for a minimum of 2 hours, waiting for rescue. Moreover, engineers can handle such an emergency in their operating room. When needed, they can put on personal respirators and stop the emission outdoors.
In situation with extreme levels of H2S and highly explosive hydrocarbon gases, filters on the intake air are not enough. In such situations, air intake is automatically closed and the HVAC system is set in a recirculation mode. Air is then taken through CO2 filters in addition to the H2S filters.
In addition to this, a bottle bank with stored air supplies the gas safe shelter with additional air in order to keep overpressure. Uniteam Gas Safe Shelters also provide protection against nuclear contaminants and biological and chemical agents (NBC protection).