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A comprehensive set of questions and answers related to firefighter hazmat operations. It covers various aspects of hazardous materials response, including identification, handling, and safety procedures. Useful for individuals preparing for hazmat certification exams or seeking to enhance their knowledge in this field.
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Compared to other types of incidents to which first responders are commonly called, hazardous material incidents typically ___________. - ✔✔✔more complicated By which acronym are the federal regulations detailing hazardous materials response competencies collectively known? - ✔✔✔HAZWOPER Which of the following actions is permitted for operations-level hazardous materials responders? - ✔✔✔closing remote valve Which federal agency enforces and publicizes laws and regulations governing transportation of hazardous materials? - ✔✔✔department of transportation What is the minimum level of hazardous materials training for a hazardous materials officer? - ✔✔✔operations Ideally, when should response to a hazardous materials incident begin? - ✔✔✔during pre incident planning What is the minimum level of hazardous materials training required to take defensive actions? - ✔✔✔operations What is the temperature at which a flammable liquid will ignite without any external ignition source? - ✔✔✔ignition temperature
What is the vapor density of air? - ✔✔✔ 1 According to the NFPA, what is defined as a material capable of posing an unreasonable risk to health, safety, or the environment? - ✔✔✔Hazard What is the term for the process by which people, animals, the environment, and equipment come into contact with a hazardous material? - ✔✔✔exposure Which mnemonic helps fire fighters remember the seven categories of harm that can be caused by terrorism agents or other hazardous materials? - ✔✔✔TRACEMP Which of the following is the most toxic nerve agent? - ✔✔✔VX What is the maximum capacity of an intermodal tank? - ✔✔✔6,000 gallons (22,700 L) What does the NFPA 704 marking system address? - ✔✔✔Hazardous materials at fixed facilities What is the typical maximum pressure reading for a standard oxygen cylinder used in the medical field? - ✔✔✔2,000 psi (13,800 kPa) Which cargo is carried by a highway tanker that has a smaller-diameter tank with several reinforcing rings around the circumference? - ✔✔✔corrosives Which free service can be accessed to connect fire fighters with chemical manufacturers, chemists, and other specialists during a chemical incident? - ✔✔✔Chemtrec What is the term for shipping papers carried on railroad transportation? - ✔✔✔waybill
chemical exposure, general use, or ambient conditions? - ✔✔✔Degradation Which control zone is referred to as the safe zone? - ✔✔✔cold zone Skin contact with an alkaline material is most likely to cause __________. - ✔✔✔dissolving skin tissue What is the recommended treatment for heat exhaustion? - ✔✔✔rest and rehydration Which of the following occupies the warm zone? - ✔✔✔Decontamination corridor What is the term for the placement of impervious materials to form a barrier so as to limit the spread of a liquid hazardous material? - ✔✔✔diking During use of the shelter-in-place technique, the ventilation system should be __________. - ✔✔✔turned off What is the most reliable way to determine how far to extend actual evacuation distances? - ✔✔✔detection equipment Following mass decontamination, victims should be directed to the __________. - ✔✔✔triage area Which statement about runoff during emergency decontamination is correct? - ✔✔✔an effort should be made to divert runoff from drains, streams, and ponds A contaminated victim coming into physical contact with a rescuer is an example of ________. - ✔✔✔cross-contamination
Level D PPE - ✔✔✔Coveralls and Eye Protection Level C PPE - ✔✔✔turnout gear Level B PPE - ✔✔✔when hazard calls for more respiratory protection vs skin protection (splash protective clothing and scba) Level A PPE - ✔✔✔fully encapsules the hazardous materials tech, including his or her self contained breathing apparatus
Corrosives Sulfuric acid, phosphoric acid, sodium hydroxide Smaller diameter than MC307 and has reinforcing rings around the tank MC 312/DOT 412 - ✔✔✔ MC 331 - ✔✔✔High Pressure Cargo Tank (300 psi) Internal working pressure 250 psi Rounded ends Ammonia, propane, Freon, butane Explosion hazard if flame impingement Spring loaded relief valves Set at 110% of designated maximum working pressure MC 331 - ✔✔✔ MC 338 - ✔✔✔Cryogenic Liquid Tank Car Low pressure tank with insulation Low temperatures Relief valve near control box Occasional small puffs of white vapor may vent here, this is considered a normal part of operation for the valve MC 338 - ✔✔✔ Compressed gas tube trailers - ✔✔✔Carry compressed gases Hydrogen, oxygen, helium, methane High volume transportation vehicles made up
of several individual cylinders banded together Operating pressure of 3000 to 5000 psi Compressed gas tube trailers - ✔✔✔ dry bulk carrier - ✔✔✔Dry goods Powders, pellets, fertilizers, grain Not pressurized, but may use pressure to off load contents V shaped with bottom mounted controls dry bulk carrier - ✔✔✔ low pressure rail car - ✔✔✔Visible valves and piping w/o protection Internal pressure less than 25 psi Pressure tank cars - ✔✔✔protected top mounted fittings 8 step process - ✔✔✔-Site Management And Control
Vapor Density - ✔✔✔weight of a vapor compared to air air = 1 Lethal Dose (LD50) - ✔✔✔death by any route other than inhalation Lethal Concentration (LC50) - ✔✔✔Amount that kills 50 percent via inhalation Non Bulk Packaging - ✔✔✔Drums, bags, compressed gas cylinders
class 9 - ✔✔✔other Yellow-bordered section - ✔✔✔to use 4 digit UN number Blue bordered pages - ✔✔✔to look up by name of chemical Green Bordered Pages - ✔✔✔Initial Isolation & Protective Actions Distances. Orange Bordered pages - ✔✔✔gives details on specific chemical type and precautions if chemical is highlighted in green - ✔✔✔inhalation hazard refer to green pages for protective actions and distances