Special requirements for cartridges in explosive/flammable dust?

Anti-static cartridges must be used, and: 1) The whole cartridge is anti-static—both media and cage are anti-static materials to prevent static accumulation; 2) The equipment is fitted with explosion vent panels, spark arresters and other explosion-proof accessories; 3) High-pressure over-cleaning is strictly prohibited to avoid secondary dust lifting and explosion risk; 4) Clean cartridge dust regularly to prevent pile-up and spontaneous combustion.