NFPA 1033 EVALUATION EXAM 2026 QUESTIONS AND
ANSWERS RATED A+
✔✔Arc Survey Diagrams - ✔✔Locations of electrical arcing are identified and plotted on
a diagram of the affected area of the structure. The spatial relationship of the arc sites
can create a pattern and help establish the sequence of damage. This analysis can be
used on building circuits and electrical devices within a compartment to help identify or
narrow the area of origin.
✔✔Arc Tube - ✔✔A cylinder of fused silica/quartz with electrodes at either end that is
used in most mercury and metal halide lamps.
✔✔Arc - ✔✔A high-temperature luminous electric discharge across a gap where the
conductor is missing or through a medium such as charred insulation.
✔✔Arced and Severed - ✔✔Occurs when wires are arced off on the ends and possible
segmented wires result.
✔✔Arc-Fault Circuit Interrupter (AFCI) - ✔✔Designed to protect against fires caused by
arcing faults in home electrical wiring. The circuitry continuously monitors current flow.
✔✔Area of Origin - ✔✔The room, building, or general area in which the point of origin is
located.
✔✔Arson - ✔✔The crime of maliciously and intentionally, or recklessly, starting a fire or
causing an explosion. Legal definitions of "arson" are defined by statues and judicial
decisions that vary among jurisdictions.
✔✔Aspect - ✔✔The direction the slope faces (N, E, S, W).
✔✔Assemblies - ✔✔Manufactured parts put together to make a completed product.
✔✔Autoignition Temperature (AIT) - ✔✔The lowest temperature at which a combustible
material ignites in air without a spark or flame.
✔✔Backflow Valve - ✔✔Prevents gas from re-entering a container or combustion
system.
✔✔Balanced Pressure Proportioner - ✔✔A proportioner that uses an atmospheric tank
and pump to introduce the foam concentrate into the system with the water supply.
✔✔Balloon Frame Construction - ✔✔A construction type in which the exterior wall studs
go from the foundation wall to the roofline. The floor joists are attached to the walls by
,the use of a ribbon board, which creates an open stud channel between floors, including
the basement and attic.
✔✔Bar Holes - ✔✔Holes driven into the surface of the ground or pavement with either
weighted metal bars or drills. Gas detectors are then inserted into the holes in order to
detect the location of a gas leak.
✔✔Benchmark Events - ✔✔Events that are particularly valuable as a foundation for the
timeline or may have significant relation to the cause, spread, detection, or
extinguishment of a fire.
✔✔Beveling - ✔✔A fire pattern that indicate fire direction on wood wall studs. The bevel
leans toward the direction of travel.
✔✔Bilges - ✔✔The lowest, interior part of a vessel's hull; the area where spilled water
and oil can collect.
✔✔Blast Overpressure - ✔✔Large quantities of gas being produced by the explosion of
the material.
✔✔BLEVE - ✔✔Boiling Liquid Expanding Vapor Explosion.
✔✔Blow Holes - ✔✔Visible holes in the conduit or metal panels of branch circuits. They
are an indication of significant arcing and energy release inside the enclosure or
conduit.
✔✔Boat - ✔✔Any vessel that can be placed or stored on another vessel.
✔✔Branch Circuits - ✔✔The individual circuits that feed lighting, receptacles, and
various fixed appliances.
✔✔Bulkheads - ✔✔The vertical separations in a vessel that form compartments and
that correspond to walls in a building. The term does not refer to the vertical sections of
a vessel's hull.
✔✔Burning Velocity - ✔✔The rate of flame propagation relative to the velocity of the
unburned gas ahead of it.
✔✔Calcination - ✔✔A fire effect realized in gypsum products, including wallboard, as a
result of exposure to heat that drives off free and chemically bound water.
✔✔Carboxyhemoglobin (COHb) - ✔✔The carbon monoxide saturation in the blood.
,✔✔Catalytic Converter - ✔✔A device in the exhaust system that exposes exhaust
gases to a catalyst metal to promote oxidation of hydrocarbon materials in the exhaust
gas.
✔✔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.
✔✔Central Station Service - ✔✔A facility that receives fire alarm signals from properties
that is staffed with trained, qualified, and proficient personnel who take the appropriate
action to process, record, respond, and maintain monitored fire alarm systems.
✔✔Chain of Custody - ✔✔The trail of accountability that documents the possession of
evidence in an investigation.
✔✔Char - ✔✔Carbonaceous material that has been burned or pyrolyzed and has a
blackened appearance.
✔✔Chemical Explosion - ✔✔Explosion in which a chemical reaction is the source of the
high-pressure fuel gas. The fundamental nature of the fuel is changed.
✔✔Child Firesetters - ✔✔Children, ages 2 to 6 years, who are often responsible for fires
in their homes or in the immediate area.
✔✔Circumstantial Evidence - ✔✔Facts that usually attend other facts to be proven and
are drawn by logical inference from them rather than personal knowledge.
✔✔Class A Foam - ✔✔A mechanically generated aggregation of bubbles that have a
lower density than water.
✔✔Clean Burn - ✔✔A fire effect that appears on noncombustible surfaces after any
combustible layers (such as soot, paint, and paper) have been burned away. The effect
may also appear where soot was not deposited due to high surface temperatures.
✔✔Coded Signal - ✔✔A signal that generates a predetermined visual or audible pattern
to identify the location of the initiating device that is operating.
✔✔Cognitive Testing - ✔✔The use of a person's thinking skills and judgment in order to
evaluate the empirical data and challenge the conclusions of the final hypothesis.
✔✔Collapse Zones - ✔✔Distance around a structure that may be affected by a
structural collapse. The area should be identified by markers or specialized scene tape
that indicates there is a potential for a structural collapse.
, ✔✔Combustible Gas Indicator - ✔✔An instrument that samples air and indicates
whether combustible vapors are present. Some units may indicate the percentage of the
lower explosive limit of the air/gas mixture.
✔✔Combustion Explosion - ✔✔Explosion caused by the burning of combustible
hydrocarbon fuels and characterized by the presence of a fuel with air as an oxidizer.
✔✔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 flames.
✔✔Commercial Propane - ✔✔Derived from the refining of petroleum, a liquefied gas
comprising 95% propane and propylene and 5% other gases.
✔✔Compartmentation - ✔✔A concept in which fire is kept confined in its room of origin,
minimizing smoke movement to other areas of a building.
✔✔Complex Investigation - ✔✔Generally includes multiple simultaneous investigations
and involves a number of interested parties.
✔✔Conduction - ✔✔Heat transfer to another body or within a body by direct contact.
✔✔Confidential Communication - ✔✔Those statements made under circumstances
showing that the speaker intended the statements only for the ears of the person
addressed.
✔✔Confirmation Bias - ✔✔The attempt to prove a hypothesis instead of disprove a
hypothesis, resulting in a failure to consider alternative hypotheses or the premature
discounting of an alternative hypotheses.
✔✔Coniferous Litter - ✔✔Primarily needles dropped from coniferous trees but may also
include branches, bark, and cones.
✔✔Consent - ✔✔Permission from the owner or occupant to examine property.
✔✔Constitutional Law - ✔✔Law that is based on the U.S. Constitution.
✔✔Container Appurtenances - ✔✔The devices that are connected to the openings in
tanks and other containers -- such as pressure relief devices, control valves, and
gauges.
✔✔Control of Hazardous Energy (Lockout/Tagout) Standard - ✔✔The federal OSHA
regulation that governs work around equipment or wiring where an unexpected
energization, startup of machines, or release of stored energy could result in the injury
ANSWERS RATED A+
✔✔Arc Survey Diagrams - ✔✔Locations of electrical arcing are identified and plotted on
a diagram of the affected area of the structure. The spatial relationship of the arc sites
can create a pattern and help establish the sequence of damage. This analysis can be
used on building circuits and electrical devices within a compartment to help identify or
narrow the area of origin.
✔✔Arc Tube - ✔✔A cylinder of fused silica/quartz with electrodes at either end that is
used in most mercury and metal halide lamps.
✔✔Arc - ✔✔A high-temperature luminous electric discharge across a gap where the
conductor is missing or through a medium such as charred insulation.
✔✔Arced and Severed - ✔✔Occurs when wires are arced off on the ends and possible
segmented wires result.
✔✔Arc-Fault Circuit Interrupter (AFCI) - ✔✔Designed to protect against fires caused by
arcing faults in home electrical wiring. The circuitry continuously monitors current flow.
✔✔Area of Origin - ✔✔The room, building, or general area in which the point of origin is
located.
✔✔Arson - ✔✔The crime of maliciously and intentionally, or recklessly, starting a fire or
causing an explosion. Legal definitions of "arson" are defined by statues and judicial
decisions that vary among jurisdictions.
✔✔Aspect - ✔✔The direction the slope faces (N, E, S, W).
✔✔Assemblies - ✔✔Manufactured parts put together to make a completed product.
✔✔Autoignition Temperature (AIT) - ✔✔The lowest temperature at which a combustible
material ignites in air without a spark or flame.
✔✔Backflow Valve - ✔✔Prevents gas from re-entering a container or combustion
system.
✔✔Balanced Pressure Proportioner - ✔✔A proportioner that uses an atmospheric tank
and pump to introduce the foam concentrate into the system with the water supply.
✔✔Balloon Frame Construction - ✔✔A construction type in which the exterior wall studs
go from the foundation wall to the roofline. The floor joists are attached to the walls by
,the use of a ribbon board, which creates an open stud channel between floors, including
the basement and attic.
✔✔Bar Holes - ✔✔Holes driven into the surface of the ground or pavement with either
weighted metal bars or drills. Gas detectors are then inserted into the holes in order to
detect the location of a gas leak.
✔✔Benchmark Events - ✔✔Events that are particularly valuable as a foundation for the
timeline or may have significant relation to the cause, spread, detection, or
extinguishment of a fire.
✔✔Beveling - ✔✔A fire pattern that indicate fire direction on wood wall studs. The bevel
leans toward the direction of travel.
✔✔Bilges - ✔✔The lowest, interior part of a vessel's hull; the area where spilled water
and oil can collect.
✔✔Blast Overpressure - ✔✔Large quantities of gas being produced by the explosion of
the material.
✔✔BLEVE - ✔✔Boiling Liquid Expanding Vapor Explosion.
✔✔Blow Holes - ✔✔Visible holes in the conduit or metal panels of branch circuits. They
are an indication of significant arcing and energy release inside the enclosure or
conduit.
✔✔Boat - ✔✔Any vessel that can be placed or stored on another vessel.
✔✔Branch Circuits - ✔✔The individual circuits that feed lighting, receptacles, and
various fixed appliances.
✔✔Bulkheads - ✔✔The vertical separations in a vessel that form compartments and
that correspond to walls in a building. The term does not refer to the vertical sections of
a vessel's hull.
✔✔Burning Velocity - ✔✔The rate of flame propagation relative to the velocity of the
unburned gas ahead of it.
✔✔Calcination - ✔✔A fire effect realized in gypsum products, including wallboard, as a
result of exposure to heat that drives off free and chemically bound water.
✔✔Carboxyhemoglobin (COHb) - ✔✔The carbon monoxide saturation in the blood.
,✔✔Catalytic Converter - ✔✔A device in the exhaust system that exposes exhaust
gases to a catalyst metal to promote oxidation of hydrocarbon materials in the exhaust
gas.
✔✔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.
✔✔Central Station Service - ✔✔A facility that receives fire alarm signals from properties
that is staffed with trained, qualified, and proficient personnel who take the appropriate
action to process, record, respond, and maintain monitored fire alarm systems.
✔✔Chain of Custody - ✔✔The trail of accountability that documents the possession of
evidence in an investigation.
✔✔Char - ✔✔Carbonaceous material that has been burned or pyrolyzed and has a
blackened appearance.
✔✔Chemical Explosion - ✔✔Explosion in which a chemical reaction is the source of the
high-pressure fuel gas. The fundamental nature of the fuel is changed.
✔✔Child Firesetters - ✔✔Children, ages 2 to 6 years, who are often responsible for fires
in their homes or in the immediate area.
✔✔Circumstantial Evidence - ✔✔Facts that usually attend other facts to be proven and
are drawn by logical inference from them rather than personal knowledge.
✔✔Class A Foam - ✔✔A mechanically generated aggregation of bubbles that have a
lower density than water.
✔✔Clean Burn - ✔✔A fire effect that appears on noncombustible surfaces after any
combustible layers (such as soot, paint, and paper) have been burned away. The effect
may also appear where soot was not deposited due to high surface temperatures.
✔✔Coded Signal - ✔✔A signal that generates a predetermined visual or audible pattern
to identify the location of the initiating device that is operating.
✔✔Cognitive Testing - ✔✔The use of a person's thinking skills and judgment in order to
evaluate the empirical data and challenge the conclusions of the final hypothesis.
✔✔Collapse Zones - ✔✔Distance around a structure that may be affected by a
structural collapse. The area should be identified by markers or specialized scene tape
that indicates there is a potential for a structural collapse.
, ✔✔Combustible Gas Indicator - ✔✔An instrument that samples air and indicates
whether combustible vapors are present. Some units may indicate the percentage of the
lower explosive limit of the air/gas mixture.
✔✔Combustion Explosion - ✔✔Explosion caused by the burning of combustible
hydrocarbon fuels and characterized by the presence of a fuel with air as an oxidizer.
✔✔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 flames.
✔✔Commercial Propane - ✔✔Derived from the refining of petroleum, a liquefied gas
comprising 95% propane and propylene and 5% other gases.
✔✔Compartmentation - ✔✔A concept in which fire is kept confined in its room of origin,
minimizing smoke movement to other areas of a building.
✔✔Complex Investigation - ✔✔Generally includes multiple simultaneous investigations
and involves a number of interested parties.
✔✔Conduction - ✔✔Heat transfer to another body or within a body by direct contact.
✔✔Confidential Communication - ✔✔Those statements made under circumstances
showing that the speaker intended the statements only for the ears of the person
addressed.
✔✔Confirmation Bias - ✔✔The attempt to prove a hypothesis instead of disprove a
hypothesis, resulting in a failure to consider alternative hypotheses or the premature
discounting of an alternative hypotheses.
✔✔Coniferous Litter - ✔✔Primarily needles dropped from coniferous trees but may also
include branches, bark, and cones.
✔✔Consent - ✔✔Permission from the owner or occupant to examine property.
✔✔Constitutional Law - ✔✔Law that is based on the U.S. Constitution.
✔✔Container Appurtenances - ✔✔The devices that are connected to the openings in
tanks and other containers -- such as pressure relief devices, control valves, and
gauges.
✔✔Control of Hazardous Energy (Lockout/Tagout) Standard - ✔✔The federal OSHA
regulation that governs work around equipment or wiring where an unexpected
energization, startup of machines, or release of stored energy could result in the injury
