What is the defined radius of the "breathing zone"?

The "breathing zone" is defined as an area that extends 12 inches from the worker's mouth and nose. This concept is crucial because it represents the zone where airborne contaminants, such as lead dust, can be inhaled by the worker. Understanding this radius helps in assessing and controlling occupational exposure to harmful substances, ensuring that appropriate safety measures are implemented within this critical area. By focusing on the first 12 inches, safety protocols can be effectively designed to minimize inhalation risks, thereby protecting the health of those involved in lead abatement and other hazardous occupations.