G-22 FDNY QUESTIONS WITH CORRECT AND COMPLETE ANSWERS GRADED TO PASS

Amounts of LPG & CNG where permit is required - 16.4 oz and 8.7 SCF Portable LPG AND CNG containers with a capacity greater than 16.4 oz 8.7 SCF CANNOT be stored where? - Indoors What temperature can cause pressure inside a container to increase to an unsafe level? - 125°F What must be used to shield containers that are exposed to hot air blown by a heating appliance? - A protective partition Control Valve - On top of each container. Controls the discharge of the contents of the container. Must be opened by hand Hoses - Should be as short as possible Cannot exceed 30 feet When used inside the hose cannot pass through any partitions/floors/walls/ceilings The use of nonmetallic pipe tubing or hose for permanently interconnecting containers is prohibited - If containers need to be moved between floors - Use an elevator if possible When can containers be transported in vehicles? - When they are approved vehicles When the quantity of gas is less than 400 SCF Containers should be kept away from - Sources of ignition Extreme temps Corrosives Falling objects Public tampering Places where it may fall Which liquids are considered LPG - Propane (most common) Propylene Butane (most common) Butylene LPG is naturally - Colorless and Odorless What odor allows you to detect an LPG leak? - Rotten eggs When is the use of LPG in liquid form not prohibited? - Hot air balloon operations LPG is usually stored as what and why? - A liquid. Because when the liquid turns to a gas it expands to 269 times its original volume What does the expansion rate of LPG cause? - To be a much greater fire hazard than a vapor leak LPG containers are allowedd to charge to a max of how many pounds? - 100 pounds Universal Type container may be used - Either upright or horizontal When are universal containers used - When its difficult to maintain an upright position on a standard container How must control valve be opened? - By hand and turning 2 full revolutions counter clockwise Rubber Slip Connections - Prohibited in LPG containers