What defines a confined space?

A confined space is defined by its physical characteristics, primarily that it is large enough for a person to enter and perform work but has limited means of entry or exit. This makes it different from typical work environments where accessibility is not restricted.

The critical factor here is the restricted access, which can contribute to hazards such as lack of ventilation, accumulated toxic gases, or difficulty in rescue in case of an emergency. By understanding these characteristics, workers and safety professionals can better assess the risks and implement safety procedures when working in such environments.

The other options do not encapsulate the essential elements that define a confined space; for example, a space designed for frequent occupancy implies regular access and safety measures, and a space without exit points doesn't accurately describe the general definition since confined spaces must have at least one exit, although it may be limited. Additionally, monitoring a space does not define its confined status; a space can be confined and remain unmonitored while still being hazardous.