NAFI CFEI OFFICIAL Exam Questions With Verified Answers

NAFI CFEI OFFICIAL Exam Questions With Verified Answers CODE A standard that is an extensive compilation of provisions covering broad subject matter or that is suitable for adoption into law independently of other codes and standards. GUIDE A document that is advisory or informative in nature and that contains only non mandatory provision. This may contain mandatory statements such as when it can be used, but the document as a whole is not suitable for adoption into law. Recommended Practice A document that is similar in content and structure to a code or standard but that contains only non mandatory provisions using the word "should" to indicate recommendations in the body of the text. STANDARD An NFPA document, the main text of which contains only mandatory provisions using the word "shall" to indicate requirements and that is in a form generally suitable for mandatory reference by another __________ or code or for adoption into law. Absolute Temperature A temperature measured in Kelvins (K) or Rankines (R). Accelerant A fuel or oxidizer, often an ignitible liquid, intentionally used to initiate a fire or increase the rate of growth or spread of fire. Accident An unplanned event that interrupts an activity and sometimes causes injury or damage or a chance occurrence arising from unknown causes; an unexpected happening due to carelessness, ignorance, and the like. Active Fire Protection System A system that uses moving mechanical or electrical parts to achieve a fire protection goal. Ambient Someone's or something's surroundings, especially as they pertain to the local environment; for example, ambient air and ambient temperature. Ampacity The maximum current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating. Ampere The unit of electric current that is equivalent to a flow of one coulomb per second. Arc High-temperature luminous electric discharge across a gap or through a medium such as charred insulation. Arc Mapping Identifying and documenting a fire pattern derived from the identification of arc sites used to aid in determining the area of fire origin or spread. Arc Melting Melting of conductors and conducting surfaces as a result of electrical arcing. Arc Site The location on a conductor with localized damage that resulted from an electrical arc. Arcing through Char Arcing associated with a matrix of charred material that acts as a semiconductive medium. Area of Origin A structure, part of a structure, or general geographic location within a fire scene, in which the "point of origin" of a fire or explosion is reasonably believed to be located. Arrow Pattern A fire pattern displayed on the cross-section of a burned wooden structural member. Arson The crime of maliciously and intentionally, or recklessly, starting a fire or causing an explosion. Autoignition Initiation of combustion by heat but without a spark or flame. Autoignition Temperature The lowest temperature at which a combustible material ignites in air without a spark or flame. Backdraft A deflagration resulting from the sudden introduction of air into a confined space containing oxygen-deficient products of incomplete combustion. Bead A rounded mass of resolidified metal on the end of the remains of an electrical conductor or conductors that was caused by arcing and is characterized by a sharp line of demarcation between the melted and unmelted conductor surfaces. Blast Pressure Front The expanding leading edge of an explosion reaction that separates a major difference in pressure between normal ambient pressure ahead of the front and potentially damaging high pressure at and behind the front. BLEVE Boiling Liquid Expanding Vapor Explosion Bonding The permanent joining of metallic parts to form an electrically conductive path that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed. British Thermal Unit (BTU) The quantity of heat required to raise the temperature of one pound of water 1 degree F at the pressure of 1 atmospheric and temperature of 60 degrees F. Calcination of Gypsum A fire effect realized in gypsum products, including wallboard, as a result of exposure to heat that drives off free and chemically bound water. Calorie Amount of energy needed to raise temperature 1 gram of water 1 degree C Cause The circumstances, conditions, or agencies that brought about or resulted in the fire or explosion incident, damage to property , bodily injury, or loss of life. Ceiling Jet A relatively thin layer of flowing hot gases that develops under a horizontal surface (e.g., ceiling) as a result of plume impingement and the flowing gas being forced to move horizontally. Char Carbonaceous material that has been burned or pyrolyzed and has a blackened appearance. Char Blisters Convex segments of carbonized material separated by cracks or crevasses that form on the surface of char, forming on materials such as wood as the result of pyrolysis or burning. Clean Burn A distinct and visible fire effect generally apparent on noncombustible surfaces after combustible layer(s) (such as soot, paint, and paper) have been burned away. The effect may also appear where soot has failed to be deposited because of high surface temperatures. Combustible Capable of undergoing combustion. Combustible Gas Indicator An instrument that samples air and indicates whether there are ignitible vapors or gases present. Combustible Liquid Liquid having a closed-cup flash point at or above 100°F (37.8°C) and below 200°F (93.3°C). Combustion A chemical process of oxidation that occurs at a rate fast enough to produce heat and usually light in the form of either a glow or flame. Combustion Products The heat, gases, volatilized liquids and solids, particulate matter, and ash generated by combustion. Competent Ignition Source An ignition source that has sufficient energy and is capable of transferring that energy to the fuel long enough to raise the fuel to its ignition temperature. Conduction Heat transfer to another body or within a body by direct contact. Convection Heat transfer by circulation within a medium such as a gas or liquid. Creep The tendency of a material to move or deform