IAAI CFI Study Questions & Answers

Combustible Liquid - ANSWERSA liquid with a flash point ABOVE 100F 12.5 - ANSWERSIf the current flowing out from an electrical panel is 12.5 amps, and it then flows through an electrical load of 1500 watts, what is the amperage of the remaining current flow of the return circuit? 1000 - ANSWERSIf a hair dryer draws 8.3amps (in a home with 120-volt service), what is the wattage? *Power (P) = current (I) x voltage (V) Watts = amps x volts 1987 - ANSWERSThe year of the first edition of NFPA 1033 1.5 times - ANSWERSThe recommended distance for securing the perimeter of a blast scene *That is, the distance from the furthest debris 1100°F - ANSWERSWhat temperature in the upper gas layer causes the onset of Flashover? 1960°F - ANSWERSThe temperature at which copper melts 2 W/cm2 - ANSWERSThe measurement of the radiant heat flux (from gas layer to the floor) that indicates the onset of flashover 240 volts - ANSWERSThe voltage between the two hot wires at the service entrance cables in most single-family residences in the United States (single-phase service with three wires) 3 years - ANSWERSThe revision cycle for NFPA 921 (timespan) 350°F - ANSWERSThe flash point of power steering fluid 35-70 p.s.i. - ANSWERSIn high-pressure fuel-injected vehicles, this is the typical range of pressure that is used to pump fuel from a fuel tank 5 and 17 - ANSWERSThe lower explosive and upper explosive limit of natural gas (methane)? 680°F - ANSWERSThe ignition temperature of power steering fluid Fuel - ANSWERSAny substance that can undergo combustion Act or Omission - ANSWERSTwo factors or situations leading to a fire that may show the nature of the incident responsibility. Additional Investigative Recommendations - ANSWERSThis concept should not be included in a summary report of findings. Admiralty Law - ANSWERSA law that may govern the fire investigation of a boat After-market Equipment - ANSWERSA type of device in a vehicle, which can cause an electrical overload to factory installed wiring Alive and Breathing - ANSWERSEvidence of smoke or soot in the lungs, bronchi, and trachea is one of the most significant factors in confirming that, at the time of the fire, the victim was WHAT? All Team Members - ANSWERSThose who have the responsibility for monitoring safety conditions at the fire or explosion scene 1220°F - ANSWERSThe melting temperature of aluminum Aluminum-to-pavement sparks - ANSWERSWhich one of these is NOT considered a competent ignition source? Metal-to-metal sparks, Aluminum-to-pavement sparks, Metal-to-pavement sparks, Motor bearing sparks Heat Release Rate - ANSWERSA meaningful analysis of a fire requires an understanding of the fire growth, the total heat released, and WHAT? Arc-fault circuit interrupter - ANSWERSWhat does he term AFCI stand for? And, the "A" specifically represents what? ASTM - ANSWERSThe organization that develops standard methods for testing materials Auto-ignition - ANSWERSInitiation of combustion by heat but without a spark or flame Backdraft - ANSWERSA deflagration resulting from the sudden introduction of air into a confined space containing oxygen-deficient products of incomplete combustion Backdraft - ANSWERSAn explosion caused by a combination of combustible materials heated to the ignition point and a sudden introduction of oxygen to support combustion Backfire Flame Arrestor - ANSWERSA boat device that owners fail to keep clean, which is a frequent cause of engine compartment fires on boats Ballast - ANSWERSA device on a fluorescent light fixture that transforms the voltage from normal household voltage to a higher voltage Battery - ANSWERSThe starter motor draws its energy from this source Beyond a Reasonable Doubt - ANSWERSThe burden of proof in a criminal trial Bimetallic Thermostats - ANSWERSThe component that controls temperature in many heat-producing appliances BLEVE - ANSWERSThis may occur when the vapor pressure of a liquid exceeds atmospheric pressure *And this is the most common mechanical explosion Boiling Point - ANSWERSThe temperature or point at which the vapor pressure of a liquid equals the external pressure applied Bonding - ANSWERSThe process of electrically connecting two or more conductive objects Bottom Passenger Side of the Windshield - ANSWERSMost engine fires typically penetrate the interior compartment at this location of the vehicle Brass Prongs (male ends) - ANSWERSAn investigator can closely examine this component of a cord to determine if it was plugged into a receptacle Calcination - ANSWERSThe chemical and physical changes that occur in gypsum wallboard surfaces during a fire Carbon Monoxide - ANSWERSA narcotic gas that one might be exposed to in the fire Carbon Monoxide - ANSWERSThe levels of this toxin dissipate over time after removal from the fire environment. Carbon Monoxide Poisoning - ANSWERSThis toxic condition does NOT cause a cherry-pink coloration to the skin of the fire victim and is NOT visible on all skin types Carburetor Backfire - ANSWERSThis occurrence is the most common open-flame ignition source in non-fuel injected vehicles Ceiling jet - ANSWERSWhen the fire plume reaches the ceiling of a room and moves laterally along the ceiling Christmas Tree - ANSWERSAn item in the home that burns at a peak HRR of kW, which is hotter than a pool of gasoline or a polyurethane chair Clean Burn - ANSWERSThis occurs when intense radiated heat or direct flame contacts a surface during the fire, burning away deposits Collapsed Furniture Springs - ANSWERSThis is a fire effect to furniture that does NOT provide the investigators with clues concerning the type of ignition source, but can show fire spread and intensity Color - ANSWERSA fire characteristic that is NOT necessarily an accurate indicator of the flame temperature Color Codes - ANSWERSThis feature distinguishes the heat-sensitive bulbs of sprinkler heads from each other Combustion - ANSWERSA chemical process of oxidation, which occurs at a rate fast enough to produce heat and usually light in the form of either a glow or a flame Compartmentation - ANSWERSA building design feature that aims to limit the fire to its origin. Competent Ignition Source - ANSWERSLocated at the origin, these should be considered individually during the development of a cause hypothesis Complete PPE - ANSWERSThis should be donned when dealing with hazardous chemicals Conduction - ANSWERSAn example of heat transfer, when the heating of a steel beam to an unexposed part of a building results in a fire in that location Connection Points - ANSWERSOverheating on a circuit is most likely to occur at this location on a circuit Joint Investigation - ANSWERSConsensus agreement between interested parties should be developed prior to the commencement of WHAT? Crazing - ANSWERSComplicated patterns in glass Crime Scenes - ANSWERSA type of scene or circumstances, in which fires do NOT always destroy all physical evidence Current (amperage) - ANSWERSA factor in OHM's law that can be calculated if you know resistance and voltage Deductive Reasoning - ANSWERSThe reasoning in the scientific method used to test an hypothesis Deductive Reasoning - ANSWERSThe reasoning process of moving from generalizations to particular assertion (*"Reduce to Deduce" *Test hypothesis ("deduce") *Test based on known facts *More confident assertion than induction) Demonstrative Evidence - ANSWERSType of evidence consisting of tangible items *as opposed to Testimonial Evidence or Documentary (written) Evidence Depth of Char - ANSWERSA burn pattern analysis that is MORE useful for evaluating fire spread, rather than length or intensity of burning Differential - ANSWERSAll voltages are _________________, which means that a battery or DC generator creates a potential difference that can force charge through a wire Diffusion Flame Burning - ANSWERSThe ordinary sustained burning mode in most fires Document and Carefully Move - ANSWERSBy taking these two steps, an investigator can obtain the manufacturer's name, model & serial numbers, manufacture date, and any warnings on an appliance, determined to be in the area of fire origin Documentary Evidence - ANSWERSWhat type of evidence is an investigator's report? Documentation - ANSWERSA key method used by investigators when an appliance is determined to be in the area of origin, particularly the positioning of all controls and components. DOT Standards - ANSWERSThe standards that gas cylinders must conform to (Dept. of Transportation) Dual Element Fuses - ANSWERSTypes of fuses that have one element for overloads and another element for short circuits Dust Explosion - ANSWERSA particular type of an explosion that does NOT often result in pronounced seats of explosion