How many categories of confined space hazards are recognized?

The recognition of confined space hazards is critical for ensuring the safety of individuals who may enter such environments. There are six primary categories of confined space hazards, which provide a comprehensive framework for identifying potential dangers. These categories typically include:

1. Atmospheric Hazards: This encompasses the presence of toxic gases, vapors, or fumes, along with oxygen-deficient or oxygen-enriched atmospheres that can pose serious risks to health and safety.

2. Physical Hazards: These are related to the physical configuration of the confined space, such as entrapment, engulfment, and the risk of falling objects.

3. Biological Hazards: This category includes the potential for exposure to harmful organisms like bacteria, viruses, or fungi that can cause illness.

4. Mechanical Hazards: These involve risks from equipment or machinery that may still be operational within or near the confined space, presenting dangers such as cuts or crushing injuries.

5. Environmental Hazards: Factors such as noise, temperature extremes, or radiation that could affect the safety and comfort of personnel working within the confined space fall into this category.

6. Ergonomic Hazards: These are related to awkward postures or repetitive motions that