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Firefighter 1 Vocabulary: 200 Essential Terms for Fire Safety and Emergency Response, Exams of Safety and Fire Engineering

A comprehensive list of 200 essential vocabulary terms for firefighters, covering a wide range of topics related to fire safety, emergency response, and firefighting equipment. It serves as a valuable resource for students and professionals seeking to expand their knowledge and understanding of firefighting terminology. Organized alphabetically, making it easy to find specific terms. Each term is defined clearly and concisely, providing a concise explanation of its meaning and relevance in the context of firefighting.

Typology: Exams

2024/2025

Available from 02/27/2025

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Firefighter 1 Vocabulary (200 Terms)
(Verified)
1. Accordion Load
: Arrangement of fire hose in a hose bed or compartment in a which the
hose lies on edge with the folds adjacent to each other
2. Acute
: Sharpe or severe; having a rapid onset and short duration
3. Adapter
: Device used for connecting hose couplings with dissimilar threats but with
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Firefighter 1 Vocabulary (200 Terms)

(Verified)

  1. Accordion Load : Arrangement of fire hose in a hose bed or compartment in a which the hose lies on edge with the folds adjacent to each other
  2. Acute : Sharpe or severe; having a rapid onset and short duration
  3. Adapter : Device used for connecting hose couplings with dissimilar threats but with

the same inside diameter

  1. Adz : A wedge shaped blade attached at right angles to the handle of the tool
  2. Air Aspirating Foam Nozzle : Foam nozzle especially designed to provide the aeration required to make the highest quality foam possible;most effective appliance for the generation of low expansion foam
  3. Airborne Pathogens : Disease causing microorganisms that are suspended in the air
  4. Air Flow

the valve clapper

  1. Alarm Initiating Device : Alarm system component that transmits a signal when a change occurs; change may be the result of an action such as the activation of a manual fire alarm box, the presence of products of combustion in the atmosphere, or the automatic activation of a supervisory switch
  2. All hazard concept : Provides a coordinated approach to a wide variety of incidents, all responders use a similar, coordinated approach with a common set authorities, protections, and resources
  3. Alloy : Substance or mixture composed of two or more metals (or a metal and

nonmetallic elements) fused together and dissolved into each other when molten intended to enhance the properties or usefulness of the base metal

  1. Ambient Conditions : Common, prevailing, and uncontrolled atmospheric weather conditions. The term may refer to the conditions inside or outside of the structure
  1. Authority Having Jurisdiction AHJ: Term used in codes and standards to identify the legal entity, such as a building or fire official, that has statutory authority to enforce a code and to approve or require equipment; may be a local, state, or federal government, depending on where the work occurs. In the insurance industry it may refer to an insurance rating bureau or an insurance company inspection department
  2. Autoignition: Initiation of combustion by heat but without a spark or flame
  3. Autoignition Temperature: The lowest temperature at which a combustible material ignites in air without a spark or flame
  4. Automatic Location Identification ALI: Enhanced 911 feature that displays the address of a party calling 911 on a screen for the use by the public safety telecommunicator. This feature is also used to route calls to the appropriate public safety answering point and can even store information in its database regarding the appropriate emergency services that respond to the address
  5. Automatic Sprinkler System: System of water pipes, discharge nozzles, and control valves designed to activate during fires by automatically discharging enough water to control or extinguish a fire
  1. Auxiliary Alarm System: System that connects the protected property with the fire department alarm communications center by a municipal master fire alarm box or ded
  2. Backdraft: The explosive burning of heated gases that occurs when oxygen is introduced into a compartment that has a high concentration of flammable gases and a depleted supply of oxygen due to an existing fire
  3. Backflow Preventer: A check valve that prevents water from flowing back into a system and contaminating it
  4. Baffle: Intermediate partial bulkhead that reduces the surge effect in a partially loaded liquid tank
  5. Ball valve: Valve having a ball shaped internal component with a hole through its center that permits water to flow through when aligned with the waterway
  6. Balloon Frame Construction: A construction method using long continuous studs that run from the sill plate (located on the foundation) to the roof eave line. All intermediate floor structures are attached to the studs. Requires the use of long lumber and generally lack any type of fire stopping within the wall cavity
  7. Base Station Radio: Fixed, nonmobile radio at a central location
  8. Battering Ram: Solid steel bar with handles and guards, a fork on one
  1. Bowling knot: Knot used to form a loop; it is easy to tie and untie, and does not constrict
  2. B-Post: Post between the front and rear doors on a four door vehicle, or the door handle end pst on a two door car
  3. Braided Rope: Rope constructed by uniformly intertwining strands of rope together (similar to braiding hair)
  4. Braid on Braid Rope: Rope that consists of a braided core enclosed in a braided, herringbone patterned sheath
  5. Breaching: The act of creating a hole in a wall or floor to gain access to a structure or portion of a structure
  6. British Thermal Unit (btu): Amount of head energy required to raise the temperature of one pound of water one degree farenheit. One btu=1. kilojoules
  7. Broken Stream: Streams of water that has been broken into coarsely divided drops
  8. Buoyant: The tendency or capacity to remain afloat in a liquid or rise in air or gas
  9. Butterfly Valve: Control valve that uses a flat circular plate in a pipe that rotates 90 degrees across the cross section of the pipe to control the flow of water
  1. Carbon Dioxide: Colorless, odorless, heavier than air gas that neither sup- ports combustion nor burn; used in portable extinguishers as an extinguishing agent to extinguish class b or c fires by smothering or displacing the oxygen
  2. Carbon Monoxide: Colorless, odorless, dangerous gas (both toxic and flam- mable) formed by the incomplete combustion of carbon. It combines with hemo- globin more than 200 times faster than oxygen does, thus decreasing the bloods ability to carry oxygen
  3. Carryall: Waterproof carrier used to carry and catch debris or used as a water sump basin for immersing small burning objects
  4. Cascade System: Three or more large, interconnected air cylinders, from which smaller scba cylinders are recharged; the larger cylinders typically have a capacity of 300 cubic ft
  5. Case Hardened Steel: Steel used in vehicle construction whose exterior has been heat treated, making it much harder than the interior metal
  1. Chemical Pellet: A pellet of solder, under compression, within a small cylinder, that melts at a predetermined temperature, allowing a plunger to move down and release the valve cap parts
  2. Chronic: Long term and reoccurring
  3. Circulating Feed: Fire hydrant that receives water from two or more directions
  4. Circulating Hydrant: Fire hydrant that is located on a secondary feeder or distributer main that receives water from two directions
  5. Circumstantial evidence: Evidence presented in a trial that tends to prove a factual matter through interference by proving other events or circumstances
  6. Class A foam: Foam specifically designed for use on class A combustibles. Class A foams, hydrocarbon based surfactants, are essentially wetting agents that reduce surface tension of water and allow it to soak into combustible materials more easily than plain water
  7. Class B foam: Foam fire suppression agent designed for use on unignited or ignited class b flammable or combustible materials
  8. Clear Text: Use of plain language, including certain standard words or phras- es, in radio communication transmissions
  1. Closed Circuit Self Contained Breathing Apparatus: SCBA that recycles exhaled air; removes carbon dioxide and restores compressed, chemical, or liquid oxygen. Not approved for fire fighting operations. Also known as Oxygen Breathing Apparatus (OBA) or Oxygen Generating Apparatus
  2. Clove Hitch: Knot that consists of two half hitches; it's principal use is to attach a rope to an object such as a pole, post, or hose
  3. Cockloft: Concealed space between the top floor and the roof of a structure
  4. Code: A collection of rules and regulations that has been enacted by law in a particular jurisdiction. Codes typically address a single subject area; examples include a mechanical, electrical, building, or fire code
  5. Code of Federal Regulations (CFR): Rules and regulations published by executive agencies of the U.S. federal goverment. These administrative laws are just as enforceable as statutory laws (known collectively as federal law), which must be passed by Congress
  6. Collapse Zone: Area beneath a wall in which the wall is likely to land if it loses structural integrity
  7. Combination Attack: Extinguishing a fire by using both a direct and an indirect attack. This Method
  8. Combination Ladder: Ladder that can be used as a single, extension,
  1. Conduction: Transfer of heat through or between solids that are in direct contact
  2. Conductivity: The ability of a substance to conduct an electrical current
  3. Contamination: General term referring to anything that can taint physical evidence
  4. Convection: Heat transfer by circulation within a medium such as gas or liquid
  5. Corrosive: Capable of causing corrosion by gradually eroding, rusting, or destroying a material
  6. Cribbing: Wooden or plastic blocks used to stabilize a vehicle during vehicle extrication or debris following a structural collapse; typically a 4× inches or larger and between 16 to 26 inches long
  7. Critical Flow Rate: The minimum flow rate at which extinguishment can be achieved
  8. Cross Main: Pipe connecting the feed main to the branch lines on which the sprinklers are located
  9. Crowd Control: Limiting the access of non emergency personnel to the emer- gency scene
  10. Culture: The shared assumptions, beliefs, and values of a group or organiza- tion
  1. Curtain Wall: A nonload bearing wall, often glass or steel, fixed to the outside of a building serving especially as cladding
  2. Dead End Hydrant: Fire hydrant located on a dead end main that receives water from only one direction
  3. Dead Load: Weight of the structure, structural members, building components, and any other features permanently attached to the building that are constant and immobile
  4. Deflector: Part of the sprinkler assembly that creates the discharge pattern of the water
  5. Deionized Water: Water from which ionic salts, minerals, and impurities have been removed by ion exchange
  6. Deluge Sprinkler System: Fire suppression system that consists of piping and open sprinklers. A fire detection system is used to activate the water or foam control valve. When the system activates, the extinguishing agent expels from all sprinkler heads in the designated areas