SMBA Surface Mounted Blast Attenuators

Surface Mounted Blast Attenuators The blast attenuators SMBA are stationary louvered type attenuators to be installed for the protection of HVAC air intake and outlet openings of the specified buildings subjected to a blast design overpressure lower than 0.07 barg (7 kPag), where the blast protection valves would not however close due to insufficient overpressure. Blast attenuators can be designed to be installed flush with the wall or projecting from it; in this second installation typology, blast attenuators are self-draining of the sand trapped by the blades. The blast attenuators construction...