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:
Call 911. Report:
Name and phone number
Building and room number
Area of odor
How long odor has been noticed
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:
Turn on any exhaust ventilation and close all doors when exiting laboratory or shop.
Call 911. Report:
Name and phone number
Building
Room number where cylinder is located
Name of gas leaking
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.
