NFPA 67 is a standard developed by the National Fire Protection Association (NFPA) or the National Fire Protection Association, which provides guidelines for explosion protection design and installation concerning electrical installations within hazardous locations. Explosions in flammable gases, vapor, or dust, including chemical plants, refineries, and other industrial facilities are considered in this guideline. The standard also addresses explosion-proof electrical equipment uses and wiring methods, which are used in order to minimize the possibility of ignition in hazardous areas. It also provides provisions for ventilation, grounding, and maintenance of equipment in order to minimize the chance of ignition in hazardous areas. Compliance with NFPA 67 is necessary to prevent the injuries of operators, damages to property, and destruction of equipment from risks arising out of explosive atmospheres aiming at ensuring safety in the dealing of organisations with explosive impostor works and the observance of legal laws and regulations.