Which of the following is an example of a confined space in refrigeration systems?

• A. Piping insulation
• B. Control room
• C. Evaporative condensers
• D. Refrigeration compressor discharge line

Answer: (C)

A confined space is an area that has limited entry or exit and is not designed for continuous occupancy, where hazardous atmospheres can accumulate. The interior of an evaporative condenser fits this description during maintenance because it is an enclosed or semi-enclosed area with restricted access, and if refrigerant leaks or vapors from cleaning agents are present, the space can trap gases and become hazardous. This is why entering such a unit requires appropriate safety procedures, ventilation, and gas testing. The other options aren’t spaces you enter for work: piping insulation is just material around a pipe, a control room is a workspace designed for people, and a compressor discharge line is a pipe, not a space.