Type III — Low-PressureQuestion 190 of 240
A machine room housing a low-pressure chiller should have a refrigerant monitor and ventilation mainly to protect against:
a.Oxygen displacement and refrigerant exposure
b.Frozen condenser water
c.Excess humidity damaging the walls
d.Static electricity
Explanation
Refrigerant vapor is heavier than air and can pool near the floor of a machine room, displacing oxygen and exposing workers. A refrigerant monitor and mechanical ventilation warn of a leak and clear the space. This is a standard safety requirement for chiller machine rooms.
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Related questions on this topic
- During leak testing, some technicians raise the pressure in a low-pressure chiller just above atmospheric so that:
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