ATEX 153 is a European directive that outlines safety requirements for workplaces where explosive atmospheres may occur. It focuses on minimizing risks associated with flammable gases, vapors, and dust, ensuring that employers implement proper safety measures to protect workers. The directive emphasizes the importance of risk assessment and the classification of hazardous areas. It also mandates that equipment used in these environments must meet specific safety standards to prevent ignition sources, thereby safeguarding both personnel and property from potential explosions.