What constitutes a permit-required confined space under Class 314?

What constitutes a permit-required confined space under Class 314?

• A. Any enclosed room
• B. Outdoor areas
• C. A space with limited entry/exit and potential hazardous atmosphere; requires entry permits, atmospheric testing, and rescue planning
• D. A room with smoke detectors

Answer: (C)

A permit-required confined space is a space that is confined—having limited entry and exit—and poses hazards that could injure someone, so entry must be controlled with a permit and safety measures. The correct option describes a space with restricted entry/exit and the potential for a hazardous atmosphere, which triggers the need for an entry permit, atmospheric testing, and a rescue plan. These elements together show both confinement and a hazard that requires formal precautions before and during entry. The other choices don’t fit because they describe spaces that aren’t inherently confined or hazardous in the way that requires a formal permit and protections. An enclosed room isn’t automatically hazardous or restricted. Outdoor areas aren’t typically confined spaces. A room with smoke detectors only indicates fire safety features, not the specific hazards or entry controls that define a permit-required confined space.

A permit-required confined space is a space that is confined—having limited entry and exit—and poses hazards that could injure someone, so entry must be controlled with a permit and safety measures. The correct option describes a space with restricted entry/exit and the potential for a hazardous atmosphere, which triggers the need for an entry permit, atmospheric testing, and a rescue plan. These elements together show both confinement and a hazard that requires formal precautions before and during entry.

The other choices don’t fit because they describe spaces that aren’t inherently confined or hazardous in the way that requires a formal permit and protections. An enclosed room isn’t automatically hazardous or restricted. Outdoor areas aren’t typically confined spaces. A room with smoke detectors only indicates fire safety features, not the specific hazards or entry controls that define a permit-required confined space.