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Which of the following are classes of hazards?A visor card guide for state and local law enforcement officials illustrating vehicle placarding and signage for the following nine classes of hazardous materials: 1) Explosives, 2) Gases, 3) Flammable Liquid and Combustible Liquid, 4) Flammable Solid, Spontanaeously Combustible and Dangerous When Wet 5) Oxidizer and ...
Which type of radiation can be reduced or stopped by a layer of clothing?Beta particles travel appreciable distances in air, but can be reduced or stopped by a layer of clothing, thin sheet of plastic or a thin sheet of aluminum foil. Several feet of concrete or a thin sheet of a few inches of lead may be required to stop the more energetic gamma rays.
Which mechanism of harm is the greatest threat at hazmat incidents?Hazardous materials can harm you in three ways. Energy release at hazmat incidents presents the greatest threat. Heat (thermal) hazards are common at hazmat incidents. Heat and lack of heat can both cause harm.
What influences how a container will behave when damaged or ruptured?A material's physical and chemical properties also influence how a container will behave if it is damaged or ruptured. First responders need to know how to collect hazard and response data that provide information about the substance's physical and chemical prop- erties.
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