What defines a confined space?

A confined space is characterized by having limited means for entry and exit, which is essential in distinguishing it from other environments. This definition highlights the potential hazards associated with working in such areas, as the restricted access can make it challenging for workers to enter, exit, or be rescued in emergencies.

Confined spaces can include areas such as tanks, vaults, and tunnels, where the space is enclosed in a way that creates risks regarding air quality, potential for entrapment, or difficulties in escape. Recognizing this characteristic is crucial for safety protocols and regulations, as it informs the necessary precautions that need to be followed when employees are required to work in these environments.

The other options describe spaces that do not align with the criteria for being classified as confined—whether they are open or designed for continuous occupancy, or if they allow unrestricted access, which all do not fit the definition of a confined space.