An "Explosive Atmosphere" refers to a mixture of air and flammable substances, such as gases, vapors, or dust, that can ignite and cause an explosion. These conditions can occur in various environments, including industrial settings, where materials like gasoline or coal dust are present. Proper safety measures are essential to prevent ignition sources, such as sparks or open flames. To manage the risks associated with explosive atmospheres, regulations and standards, like those from ATEX in Europe or NEC in the United States, provide guidelines for equipment and workplace safety. These regulations help ensure that workplaces are designed to minimize the likelihood of explosions and protect workers from potential hazards.