Which description best defines a confined space?

• A. Limited access and egress
• B. Open and unobstructed
• C. High ambient temperature
• D. Low voltage area

Answer: (A)

The main idea here is that a confined space is defined by restricted means of entry and exit. When access is limited, it can be hard to get in or out quickly, which makes any hazardous atmosphere or other dangers inside more risky. Spaces like tanks, vaults, manholes, or tight ducts often fit this description because the way in or out is restricted, even if the space isn’t very large. An open and unobstructed area has easy egress, so it isn’t considered confined. High temperature or low voltage inside aren’t what define a confined space on their own; they’re potential hazards that might exist inside, but the defining feature is limited access and egress.