Which NFPA rating indicates a moderate health hazard?

The NFPA (National Fire Protection Association) rating system is a widely recognized tool for assessing the hazards associated with materials, including health hazards. In this system, a health hazard rating of 2 indicates a moderate risk. This rating signifies that exposure to the material could result in temporary or minor injury, but it typically does not represent a serious or permanent health risk under normal use conditions.

A rating of 2 implies that some precautions should be taken to avoid exposure, as the substance can be harmful, but the risk remains manageable. This allows workers and safety personnel to assess the necessary safety measures, such as personal protective equipment (PPE) and other controls, to minimize risks when handling the material.

Understanding these ratings is essential for maintaining safety standards in an industrial workplace, particularly in refrigeration settings where various refrigerants and chemicals are used.