Martinndungu1986

Which type of filter is MOST likely to be used when biological hazards are known to be present? A. Powered B. Ambient air C. Vapour reducing D. Particulate removing - D. Particulate removing When using SCBA, where does the air supply come from? A. The ambient air B. The user carries it C. A stationary air cylinder D. A large stationary generator - B. The user carries it Only _____ open-circuit or closed-circuit SCBA is allowed in incidents where personnel are exposed to hazardous mat...

Emergency traffic - An urgent message that takes priority over all other communications Mayday - Emergency traffic that is used for a firefighter that is downed, lost, missing or needs immediate assistance. Evacuation signal - Warns all personnel to pull back to a safe location. Usually a sequence of 3 blasts on an apparatus air horn. Tool staging - Placing a tarp or salvage cover on the ground at a designated location and laying out commonly used tools and equipment. Carabiner - Used to...

Which of the following Best describes how understanding the physical science of fire can help firefighters - It translates into practical knowledge of fire behavior. Which of the following terms refers to a substance remaining chemically the same but changing size shape or appearance - physical change When substance changes from on type of matter to another,it has had a? - Chemical change Which of the following represents the amount of energy that an object can release in the future? - P...

1. Security barriers such as bars, grilles, and Lexan® windows: A. can be forced using common power tools. B. cannot be forced, even with specialized tools. C. require specialized training and tools to force. D. provide a more secure point of entry for a building. - C. require specialized training and tools to force. 2. Which is an unsafe action that can cause injury to firefighters(373): A. Cutting through cables with bolt cutters B. Using multiple types of power tools to cut a materia...

Three Layers of Protective Coat and Pants - Outer Shell Moisture Barrier Thermal Barrier The Personal Alert Safety System (PASS) will activate after a firefighter has been motionless for how long? - 30 seconds How many decibels must a PASS device emit? - At least 95 decibels This device assists rescuers in locating trapped, unconscious or incapacitated firefighters? - Personal Alert Safety System (PASS) When should hearing protection be used? - When riding in apparatus where noise excee...

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 feet (8,490 L). 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. NFPA 1971 - Stand...

What kind of calls do firefighters respond to most often? - Medical Emergencies What are "Fire Lines" and what are they used for? - These are made by cutting down trees and digging out all other combustible vegetation, creating bare land in the path of the fire that deprives it of fuel. They are used to fight forest fires. What are Smoke Jumpers? - Specialized teams of elite firefighters who parachute from airplanes to reach otherwise inaccessible areas. What do firefighters do between...

Which would be an example of vertical ventilation? (514) [4.3.12] Cutting a hole in the roof above the fire Opening interior doors and windows Blowers in exterior doors and windows Directing a hoseline out an upper story - Cutting a hole in the roof above the fire When performing tactical ventilation, what action has the most impact on successful ventilation? (494) [4.3.11, 4.3.12] Removing fuel sources Exposure protection Activating sprinkler systems Controlling oxygen availability -...

1. What is the function of the heads up display (HUD) on the SCBA facepiece assembly? (214) [4.3.1] A. Shows the location of other team members nearby B. Allows the wearer to communicate with team members C. Displays lights that indicate the amount of air left in the SCBA cylinder D. Helps create an airtight seal between the wearer's face and the SCBA facepiece - C. Displays lights that indicate the amount of air left in the SCBA cylinder 2. Factors that firefighters have the most cont...

What may occur if water is added to a burning liquid that is less dense than water? - the water may disperse the burning liquid instead of extinguishing it. How does the self-sustained chemical reaction influence the oxidation reaction in flaming combustion? - Increases the ratio of complete to incomplete combustion of fuel Which type of electrical heating occurs when the current flowing through a conductor exceeds its design limits? - overcurrent or overload What will a liquid with a sp...