Some dusts are explosive and/or combustible. For this class of materials, the NFPA has issued a series of compliance codes. These tend to be adopted by the local Authority Having Jurisdiction (AHJ). Using common sense and good engineering practices, the NFPA codes require the use of spark detection and extinguishing systems, explosion detection and suppression systems, isolation and/or diversion dampers, and explosion venting; where explosive and/or combustible atmospheres could exist. IAS can design and supply all components required for NFPA compliance.