What type of signs must be posted at the entrance to rooms or on cabinets containing compressed gases?

The requirement to post "Compressed Gas" signs at the entrance to rooms or on cabinets containing compressed gases is vital for safety and awareness. These signs specifically indicate the presence of compressed gases, which can pose unique hazards, such as explosion risks, fire risks, or health hazards due to potential leaks. Having clear signage helps ensure that those entering the area are immediately aware of these dangers and can take appropriate precautions.

Other types of signage, such as "Hazardous Materials," while related, are more general and may not specifically convey the specific risks associated with compressed gases. "No Smoking" signs, although important in environments involving flammable materials, do not provide information about the contents of the room or cabinet. "Caution" signs are also too vague and do not specifically address the presence of compressed gases. Thus, using "Compressed Gas" signs enhances safety by precisely alerting individuals to the specific hazards present.