Which of the following is a potential risk when entering a permit-required confined space?

Exposure to hazardous atmospheres is a critical risk when entering a permit-required confined space. Such spaces often contain harmful gases, vapors, or insufficient oxygen levels that can pose serious health threats to workers. This risk is heightened because these atmospheres can change rapidly, sometimes without warning.

In confined spaces, inhalation of toxic substances or asphyxiation due to lack of oxygen can occur, which underscores the importance of atmosphere monitoring before and during entry. Effective safety practices, including using gas detection equipment and having an emergency rescue plan in place, are essential components of managing these risks.

While loss of communication, workplace distractions, and inadequate training are important factors to consider, the direct threat to life presented by hazardous atmospheres is significantly more critical in ensuring the safety of workers in these environments.