Which of the following is NOT a characteristic of a confined space?

A confined space is typically defined by several key characteristics. One of these characteristics is that it often has limited means of entry and exit, which can pose significant safety risks. This limitation often leads to challenges when accessing the space and may complicate rescue operations in case of an emergency.

Another defining feature is that a confined space is generally not intended for continuous occupancy. These spaces are designed for specific tasks and are not suited for workers to spend extended periods of time inside.

Regarding controlled ventilation, while it is common practice to provide some form of ventilation in confined spaces to ensure a safe atmosphere, it is not a defining characteristic of a confined space itself. A confined space can exist without controlled ventilation, particularly if it is sealed or only partially ventilated. Therefore, this option is correctly identified as not a characteristic of a confined space.

In summary, the essence of a confined space revolves around limited access, its temporary use for work activities, and not being intended for continuous occupancy, rather than the specific condition of having controlled ventilation.