(flammable, toxic, corrosive, oxygen, cryogenic)
Natural Gas Odor
Odorant, added to natural gas, can be detected at extremely low concentrations. Smelling natural gas does not necessarily constitute an immediate hazard. If gas odor is detected:
Compressed Gas Cylinder
If a cylinder is leaking, and in the judgment of the person responsible for the cylinder, the valve cannot be closed, and an immediate hazard exists:
Implement building evacuation. Move to a safe distance and leave clear access for emergency personnel. Do not return to the building until instructed by a safety official.