This course presents fundamental procedures for the inspection, problem diagnosis and compliance evaluation of gas control devices and significant industrial processes. Site-specific information is used to identify shifts in operating variables that indicate a potential for increased emissions. The baseline inspection approach is reviewed. Operating principles and inspection techniques for gas control devices (adsorbers, oxidizers and condensers) and specific control applications (flue gas desulfurization and nitrogen oxide control systems) are presented. Process descriptions and inspection issues are also discussed for fossil fuel fired boilers, waste incinerators, iron and steel processes, and asphalt plants. Written and video case studies are used to reinforce the material.