Which statement best describes a confined space and the purpose of entry permits in such spaces?

Which statement best describes a confined space and the purpose of entry permits in such spaces?

• A. A space with limited entry/exit not designed for continuous occupancy; permits ensure hazards are identified, air tested, and rescue readiness is established.
• B. A space that is large and well-ventilated and intended for long-term occupancy.
• C. A space that is sealed and used for storage; permits are not required for entry.
• D. A space with multiple entry points and continuous occupancy; permits are only for record-keeping.

Answer: (B)

A confined space is defined by limited means of entry and exit and is not designed for continuous occupancy. Because access is restricted and the space may contain hazards that could trap or harm someone, entry permits are used to control the work: before anyone enters, hazards are identified, the atmosphere is tested (to verify adequate oxygen and absence or controllable levels of toxic or flammable gases), and a plan is in place for rescue and emergency response. The permit also ensures isolation of energy sources and the presence of an attendant and appropriate ventilation or other controls. The statement describing a space that is large, well-ventilated, and intended for long-term occupancy does not fit the confined-space concept. Such a space would tend to be considered a normal, non-confined work area and would not require the specific entry-permit controls used for confined spaces.

A confined space is defined by limited means of entry and exit and is not designed for continuous occupancy. Because access is restricted and the space may contain hazards that could trap or harm someone, entry permits are used to control the work: before anyone enters, hazards are identified, the atmosphere is tested (to verify adequate oxygen and absence or controllable levels of toxic or flammable gases), and a plan is in place for rescue and emergency response. The permit also ensures isolation of energy sources and the presence of an attendant and appropriate ventilation or other controls.

The statement describing a space that is large, well-ventilated, and intended for long-term occupancy does not fit the confined-space concept. Such a space would tend to be considered a normal, non-confined work area and would not require the specific entry-permit controls used for confined spaces.