What is the permissible exposure limit (PEL) set by OSHA for anhydrous ammonia?

The permissible exposure limit (PEL) for anhydrous ammonia set by OSHA is 50 parts per million (ppm). This limit is established to ensure that worker exposure to anhydrous ammonia remains at a safe level, reducing the risk of adverse health effects from inhalation.

Anhydrous ammonia can be hazardous, leading to respiratory issues, skin irritation, and other health problems if not managed properly. The PEL of 50 ppm helps to provide a regulatory framework that employers must follow, ensuring that adequate control measures, such as ventilation and personal protective equipment, are implemented to protect workers. This standard reflects the balance between allowing necessary industrial use of ammonia while safeguarding employees' health and safety within the workplace.

Understanding and adhering to this limit is vital for those working in environments where anhydrous ammonia is present, as it supports overall safety protocols and health monitoring in industrial refrigeration settings.