Propane Appliances
Propane and butane can be more dangerous than gasoline. These gases are heavier than air. If they escape, they collect in the lower parts of the vessel and are very difficult to remove.
Make sure all propane appliances and cylinders are properly secured, protected and ventilated, so that escaping gas can not reach bilges or other enclosed spaces. The equipment installation should meet Federal Government standards.
Make sure that all valves are working properly, and that all connections are tight.