2024 Facts for Drivers OCR - Copy_114-114.pdf

. What action should the professional driver take if the HM on fire is the type that should not be extinguished by water? The professional driver should specifically advise emergency responders of the presence of the HM and warn them not to use water.. What ts the particu...

. What action should the professional driver take if the HM on fire is the type that should not be extinguished by water? The professional driver should specifically advise emergency responders of the presence of the HM and warn them not to use water.. What ts the particular danger in trying to extinguish a fire that involves a flammable liquid using a stream of water? Flammable liquids float on top of water. Using a stream of water will spread the burning liquid and fire. Are there any regulations governing smoking by drivers while driving? ‘The FMCSRs prohibit smoking within 25 feet of a vehicle trans- porting explosives, flammable materials (liquids, solids, gases), or oxidizers. In addition, the driver of an empty tank vehicle ts prohibited from smoking if the vehicle ts placarded for the transportation of flammable liquids or flammable gases.. Which creates the greatest fire hazard - a tank vehicle lying on its side or a tank vehicle that has rolled over 180 degrees? A tank truck, which has rolled 180 degrees and is lying upside down, poses a greater risk than a tank truck on its side because the safety relief valves at the top of the tank may be buried or held shut, thereby restricting their ability to relieve the tank's internal pressure (which would increase with heat). If fire ignites near the point where flammable liquids are being unloaded from a cargo tank, what should the professional driver do? If fire ignites near a cargo tank’s unloading point, the professional driver should cut off the flow of product and remove the source of fuel by use of a shut-off mechanism or remote control device. How can a fire at the open manhole of a cargo tank be extin- tuished? Simply closing the manhole cover will often extinguish the fire at the manhole opening of a cargo tank. li4