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

The permissible exposure limit (PEL) for ammonia, as set by federal OSHA, is indeed 50 parts per million (ppm). This limit is designed to protect workers from the harmful effects of ammonia exposure in the workplace. Ammonia can cause irritation of the respiratory tract, eyes, and skin, especially at higher concentrations. The PEL is established to ensure that workers are not subjected to levels of exposure that could lead to acute or chronic health issues.

Setting the PEL at 50 ppm allows for a balance between the needs of industry and the safety of employees. It reflects thorough research on the health effects of ammonia exposure, taking into account various factors such as duration of exposure and potential health impacts. Understanding the PEL is vital for employers and employees to maintain a safe work environment, to implement necessary controls, and to ensure compliance with health regulations.