Which of the following is NOT a condition that defines a confined space?

The condition that is NOT a characteristic of a confined space is that it is designed for continuous occupancy. Confined spaces are typically areas that are not intended for personnel to remain in for extended periods. By definition, a confined space must have limited means for entry and exit and is not designed for continuous occupancy.

This is important to understand because confined spaces can present various hazards, making it essential for workers to enter them only for limited durations and with adequate safety measures in place.

In contrast, the other options describe conditions that do define a confined space. The requirement that a space be large enough for an employee to enter ensures that the individual can physically enter the area to perform work. Limited openings for entry or exit are critical because they can increase the risk of hazards such as suffocation or exposure to dangerous atmospheres, should an emergency arise. Therefore, understanding the characteristics of confined spaces helps in managing safety protocols effectively.