Training Notebook: LPG BARBECUE FIRES

摘要

When Called To A Fire In-volving a liquefied petroleum gas (LPG) barbecue grill, you generally will encounter one of three types of fires: a grease fire in the body of the barbecue, a fire that involves the hose that connects the barbecue to the regulator (the regulator remains intact and is still controlling the flow of LPG), or a fire that burns directly from the cylinder valve. Although the first two types of fires may develop into something worse, they are generally easy to control. The third type must be appropriately dealt with in a timely manner to prevent a boiling-liquid, expand-ing-vapor explosion (BLEVE). A BLEVE occurs when flame impingement weakens the cylinder. The heat causes the cylinder's internal pressure to increase and the cylinder to eventually fail at the weakened point. LPG is composed of several hydrocarbon gases. The primary ingredient, propane, is an ambient substance with a vapor density of 1.6. It is colorless and odorless and has a boiling point of -44℉. Propane is odorized so that a leak can be detected. The expansion ratio is 270:1. Each cubic foot of liquid becomes 270 cubic feet of gas. The flammable range is 2 to 10 percent.