FIELD: protection of room against contamination by toxic products at operation of a blasting device in an explosion-proof chamber in case of a loss of its sealing under the effect of explosion. SUBSTANCE: the device has an explosion-proof chamber, protective cover and a tray. The cover with the tray represent a single closed structure formed around the explosion-proof chamber, and provided with filtering windows, transport and suspension systems. The protective cover may be made multilayer of an aluminum layer facing inside the device, then of rubber and percale layers. The filtering windows may be provided with spokes, Petryanov's cloth is used in the windows, which may be placed between layers of capron thread for sieves. EFFECT: localized toxic products of explosion that can be removed together with the explosion-proof chamber on the device transport system for subsequent burial. 5 cl, 2 dwg
