Each country has specific regulations about combustible and respirable dust, and it’s best to review these and stay relevant if your operations are at high risk. Here are some frameworks to check out:
OSHA’s standards on proper housekeeping practices, electrical safety in hazardous locations, and grain handling
NFPA’s standards on fundamentals of combustible dust, fire and dust explosion prevention, and explosion prevention and protection
International Organization for Standardization (ISO)’s standards on occupational health and safety management, environmental management, and non-electrical equipment in explosive atmospheres