LP gas or liquid propane, which is used in gas grills, is extremely flammable. To reduce the risk of fire or explosion you need to first check the tubes that lead into the burner for any blockage. Use a pipe cleaner or wire to clear blockage, pushing it through to the main burner. Next, check all the grill hoses for cracking, brittleness or holes which will cause leaks. Pour a little soapy water over the hose and its connections…if you see bubbles forming… you’ve found a leak. You should also make sure there are no sharp bends in the hoses or tubing that would restrict the flow of gas or lead to a leak. Move the gas hoses as far away as possible from hot surfaces and dripping hot grease. If you can’t move them, install a heat shield to protect them. Finally, If you find scratched or nicked connectors, replace them before a leak develops.