NFPA 921 UPDATED EXAMS SCRIPT ALL
QUESTIONS AND ANSWERS SURE A+
✔✔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.
✔✔Approved - ✔✔Acceptable to the authority having jurisdiction.
✔✔Guide - ✔✔A document that is advisory or informative in nature and that contains
only nonmandatory provisions. A _____ may contain mandatory statements such as
when a _____ 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 nonmandatory provisions using the word
"should" to indicate recommendations in the body of the text.
✔✔Standard - ✔✔An NFPA Standard, 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 standard or code or for adoption into law.
When used in a generic sense, such as in the phrase "standards development process"
or "standards development activities," the term "standards" includes all NFPA
Standards, including Codes, Standards, Recommended Practices, and Guides.
✔✔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.
✔✔Backdraft - ✔✔A deflagration resulting from the sudden introduction of air into a
confined space containing oxygen- deficient products of incomplete combustion.
✔✔Bead - ✔✔A rounded globule of re-solidified metal at the end of the remains of an
electrical conductor 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
✔✔British Thermal Unit (Btu) - ✔✔The quantity of heat required to raise the temperature
of one pound of water 1°F at the pressure of 1 atmosphere and temperature of 60°F; a
British thermal unit is equal to 1055 joules, 1.055 kilojoules, and 252.15 calories.
✔✔Heat Release Rate - ✔✔The rate at which heat energy is generated by burning
✔✔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.
✔✔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 - ✔✔The amount of heat necessary to raise 1 gram of water 1°C at the
pressure of 1 atmosphere and temperature of 15°C; a calorie is 4.184 joules, and there
are 252.15 calories in a British thermal unit (Btu)
, ✔✔Cause - ✔✔The circumstances, conditions, or agencies that brought about or
resulted in the fire or explosion incident, damage to property resulting from the fire or
explosion incident, or bodily injury or loss of life resulting from the fire or explosion
incident.
✔✔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 Gas Indicator - ✔✔An instrument that samples air and indicates
whether there are ignitible vapors or gases present.
✔✔Combustible Liquid Aka Flammable Liquid - ✔✔Any liquid that has a closed-cup
flash point at or above 37.8°C (100°F).
✔✔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 a
liquid.
QUESTIONS AND ANSWERS SURE A+
✔✔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.
✔✔Approved - ✔✔Acceptable to the authority having jurisdiction.
✔✔Guide - ✔✔A document that is advisory or informative in nature and that contains
only nonmandatory provisions. A _____ may contain mandatory statements such as
when a _____ 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 nonmandatory provisions using the word
"should" to indicate recommendations in the body of the text.
✔✔Standard - ✔✔An NFPA Standard, 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 standard or code or for adoption into law.
When used in a generic sense, such as in the phrase "standards development process"
or "standards development activities," the term "standards" includes all NFPA
Standards, including Codes, Standards, Recommended Practices, and Guides.
✔✔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.
✔✔Backdraft - ✔✔A deflagration resulting from the sudden introduction of air into a
confined space containing oxygen- deficient products of incomplete combustion.
✔✔Bead - ✔✔A rounded globule of re-solidified metal at the end of the remains of an
electrical conductor 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
✔✔British Thermal Unit (Btu) - ✔✔The quantity of heat required to raise the temperature
of one pound of water 1°F at the pressure of 1 atmosphere and temperature of 60°F; a
British thermal unit is equal to 1055 joules, 1.055 kilojoules, and 252.15 calories.
✔✔Heat Release Rate - ✔✔The rate at which heat energy is generated by burning
✔✔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.
✔✔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 - ✔✔The amount of heat necessary to raise 1 gram of water 1°C at the
pressure of 1 atmosphere and temperature of 15°C; a calorie is 4.184 joules, and there
are 252.15 calories in a British thermal unit (Btu)
, ✔✔Cause - ✔✔The circumstances, conditions, or agencies that brought about or
resulted in the fire or explosion incident, damage to property resulting from the fire or
explosion incident, or bodily injury or loss of life resulting from the fire or explosion
incident.
✔✔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 Gas Indicator - ✔✔An instrument that samples air and indicates
whether there are ignitible vapors or gases present.
✔✔Combustible Liquid Aka Flammable Liquid - ✔✔Any liquid that has a closed-cup
flash point at or above 37.8°C (100°F).
✔✔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 a
liquid.
