Explosives and Hazardous Materials Emergencies Test 2023 Solved 100%

Class A fire extenguisher - ANSWER-Green Triangle symbol. Ordinary combustibles, such as wood, cloth and paper. Remember by A=ash Class B fire extinguisher - ANSWER-Red Square symbol. Flammable or combustible liquids, flammable gases and greases. Remember by B=barrel Class C fire extinguisher - ANSWER-Blue circle symbol. Energized electrical equipment. Remember by C=circuit Class D extinguisher - ANSWER-Yellow star symbol. Fire in certain combustible metals, such as magnesium, titanium, zirconium, sodium and potassium. For operating a fire extinguisher remember the acronym PASS. - ANSWER-P=pull pin, A=aim at the base of the fire, S=squeeze the handle, S=sweep the extinguisher from side to side. Most extinguishers have a stream range of: - ANSWER-5-20 feet There are currently over how many different haz mat materials in the US? - ANSWER-75,000 DOT estimates that what percent of all commercial cargo is haz mat materials. - ANSWER-10% Estimated that how many tons of haz mat materials enter the NC annually? - ANSWER-2 millions tons NC ranks what number in the US for total tonnage? - ANSWER-7th Injuries to volunteer firefighters? - ANSWER-10% Injuries to professional firefighters? - ANSWER-10% Injuries to unknown responders? - ANSWER-30% Injuries to police officers? - ANSWER-50% Who is responsible for enforcing DOT regulations? - ANSWER-NCSHP What regulates response levels/training? - ANSWER-OSHA 29 CFR 1910.120 What regulates all commercial shipments of has mat materials? - ANSWER-US DOT 49 CFR What regulates handling, storage, etc of substances that can be hazardous to the environment? - ANSWER-US EPA 40 CFR What does ICS stand for? - ANSWER-Incident Command System What does ICS do? - ANSWER-Consolidates command and control of various agencies. Define: Hazard Materials - ANSWER-Any material of substance that poses an unreasonable risk to safety, health and property. Define: Boiling Point - ANSWER-The temperature at which a liquid has a vapor pressure that is equal to atmospheric pressure. Varies widely. Define: Flash Point - ANSWER-The minimum temperature at which a material will give off ignitable vapors. Define: Vapor Density - ANSWER-The weight of a volume of pure vapor or gas compared to the weight of an equal volume of dry air. Define: Viscosity - ANSWER-The measure of a liquid's internal resistance to flow. The lower the viscosity the easier the flow. Define: Specific Gravity - ANSWER-A comparison of the density of a solid or liquid material to the density of water at a specific temperature. Define: Chronic Exposure - ANSWER-Usually refers to an exposure that lasts over a long period of time in small constant doses.