What is a defining feature of a non-permit confined space?

A defining feature of a non-permit confined space is that it does not have the potential to contain hazards that could cause serious harm to individuals who enter it. This means that while the space may have some limitations or conditions (like being small or having limited access), it lacks specific hazards that necessitate more stringent safety measures, such as monitoring or permits.

Non-permit confined spaces are typically considered to be safer than permit-required confined spaces, which do have a higher risk of danger due to hazardous atmospheres or conditions that could lead to serious injuries or fatalities. The absence of these hazards means that individuals entering a non-permit confined space can do so with less oversight and fewer safety protocols in place, provided they still take standard safety precautions as needed for the specific environment.

In contrast, the other choices present scenarios that would typically categorize a space as requiring a permit due to the associated risks. For example, spaces that contain hazardous gases or subjects that could lead to asphyxiation or trapping would fall under permit-required classifications because they pose significant health and safety threats to anyone entering them. Regular monitoring is also a requirement for those more dangerous environments, which is not necessary for non-permit confined spaces.