Respiratory Protection

Respiratory protection is used to reduce inhalation exposure to airborne particles, gases, vapours, and other contaminants when the equipment is suitable for the hazard and the overall control strategy. Different technologies operate in different ways: filtering devices remove specified particles from inhaled air, chemical cartridges capture selected gases or vapours, powered systems move air through filters, and supplied-air or self-contained systems deliver breathing air from an appropriate source. These technologies are not interchangeable, and no respirator should be selected solely by appearance or general category.

Industrial applications include dust-generating operations, painting, chemical handling, maintenance, confined-space work, emergency response, and processes involving potentially hazardous atmospheres. Before selecting equipment, a competent assessment should identify the contaminant, concentration, oxygen level, exposure duration, applicable exposure limit, required protection factor, and whether the atmosphere may be immediately dangerous to life or health. Air-purifying respirators must not be used in oxygen-deficient or otherwise unsuitable atmospheres. Cartridge selection must match the specific contaminant, and service life must be managed through an approved change schedule or suitable monitoring method.