What additional mask is required when the refrigerant level exceeds 2,000 lbs.?

When the refrigerant level exceeds 2,000 lbs, the requirement for additional safety measures becomes pertinent. In such scenarios, using one additional mask is mandated. This is primarily due to the potential risks associated with handling large quantities of refrigerants, which can pose health hazards if released into the environment.

The use of an additional mask ensures that personnel are protected against inhalation of any harmful vapors or gases that may be present. It acts as a precautionary measure to maintain safety standards in environments with high concentrations of refrigerants. Proper protective equipment, including masks, is crucial in mitigating exposure risks and ensuring the health and safety of those working in such conditions.