What is the definition of an enclosed space?

An enclosed space is typically defined by its limited access and inadequate ventilation, making it a potentially hazardous environment. This definition reflects the characteristics of spaces that can accumulate toxic gases or pose risks of asphyxiation due to poor air quality and lack of fresh air circulation. Such spaces are often found in vessels and industrial settings, and it's crucial for personnel to understand the dangers associated with them.

In contrast to the correct answer, spaces with limited access and good ventilation would not be classified as "enclosed" in the dangerous sense, since good ventilation generally mitigates the risks associated with toxic atmospheres. Spaces designed for continuous occupancy are not necessarily enclosed if they have ample ventilation and access, thus they don't represent the hazards associated with enclosed environments. Additionally, the definition of an enclosed space does not guarantee that it is always gas-free; rather, the risk is that it could contain harmful gases due to its confined nature. Understanding these distinctions is essential for maintaining safety in environments where enclosed spaces are present.