How is a permit-required space described?

A permit-required space is characterized by the presence or potential presence of atmospheric hazards, engulfment risks, or other serious health and safety concerns. In this context, a permit is required before entering such a space to ensure that necessary safety measures and precautions are implemented to protect workers. This definition underscores the critical importance of recognizing hazardous conditions that could affect the health and safety of individuals working within these environments.

The other options highlight characteristics that do not accurately represent what constitutes a permit-required space. For instance, describing a space as one that is meant for continuous occupancy or has unrestricted entry/exit fails to capture the inherent risks that necessitate a permit. Similarly, stating that a space never contains atmospheric or engulfment hazards contradicts the fundamental premise that these are the very hazards that define a permit-required space.