Propane barbecue safety

Propane is portable, economical and cleaner burning than charcoal. While a propane barbecue is convenient, it does require proper maintenance, especially after a long, cold winter.

Clean the barbecue at the start of each season. Scrape away grease under the hood and clean dust, dirt and cobwebs from the burner ports and throat. Use a pipe cleaner or special brush to clear out the tubes.
Be sure the burner assembly is free of rust, and replace it if it is badly corroded or warped. Unclog any holes in the burner with a nail or paper clip.
Check the fuel supply system for leaks. Use a strong solution of soapy water to check the gas line and all connections. If bubbles appear when you turn on the gas, or you can detect the smell of rotten eggs, turn off the gas and tighten the connections. If it still leaks when you repeat the test, shut off the valve and have the unit checked and repaired by a licensed gas contractor or propane supplier.
Check for gas leaks every time the regulator is connected to, or disconnected from, the propane tank. Never check for leaks using an open flame!
Locate your barbecue away from a house or other structure, and never place it under any surface that will burn, such as a carport.
Raise the barbecue lid when lighting, to avoid explosions from gas build-up.
Do not disconnect the propane tank when the barbecue is in use.
Turn off the tank valve first, so the gas in the line can burn off. Turn the burner controls off after the gas is consumed.
Never move a barbecue when it is lit.
Always store propane cylinders outdoors in an upright position.

You can learn more about propane safety:

Propane Gas Association
Canada Safety Council: Fuel for Summer Activities