Vehicle Isolation Quiz
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Questions and Answers

What is the primary composition of toxic smoke?

  • Water vapor and oxygen
  • Nitrogen and helium
  • Carbon monoxide, hydrogen cyanide, and chlorine (correct)
  • Oxygen and carbon dioxide

During which stage of a fire is dense black smoke visible?

  • Growth
  • Incipient
  • Decay
  • Fully Developed (correct)

What is indicated by smoke emanating under pressure from cracks around windows or doors?

  • Fire is in the decay stage
  • Fire is in the incipient stage
  • Fire is in the growth stage
  • Fire gases are filling the fire area (correct)

What is the rating of a fire extinguisher that can extinguish 60 ft² of Class B fire?

<p>4A 60B C (A)</p> Signup and view all the answers

What is the characteristic of the agent in a 4A 60B C fire extinguisher?

<p>It is a non-conductive agent (C)</p> Signup and view all the answers

What is the volume of water equivalent to the agent in a 10A 80B C fire extinguisher?

<p>12.5 U.S. gallons (B)</p> Signup and view all the answers

What is the characteristic of smoke during the decay stage of a fire?

<p>It is becoming dense grey yellow (B)</p> Signup and view all the answers

What is indicated by smoke-stained or blackened windows?

<p>Fire is in the fully developed stage (D)</p> Signup and view all the answers

What is the characteristic of rollover during a fire?

<p>It is visible during the fully developed stage (B)</p> Signup and view all the answers

What is the volume of the agent in a 4A 60B C fire extinguisher?

<p>18.8 L (D)</p> Signup and view all the answers

Study Notes

Mine Rescue

  • Every mine must maintain a mine rescue team to ensure the safety of workers and property on mine sites.
  • The mine rescue team must be trained to respond to incidents at surface and underground mining operations.

Incident Response

  • Upon arriving at the incident scene, stage response vehicles at a safe distance to avoid exposure to electrical hazards.
  • Isolate the vehicle for a period of time at a safe distance to avoid injury.
  • Eliminate the hazard before digging.

Fire Safety

  • Firefighters are responsible for their safety and the safety of their team, and may also need to tend to casualties in need of assistance.
  • Fire safety equipment includes:
    • Pressure gauge
    • Carrying handle
    • Discharge lever with pin/tamper seal
    • Hose
    • Extinguishing agents (water, AFFF, dry powder, dry chemical, etc.)

Extinguishing Agents

  • Water:
    • Non-toxic, plentiful, and efficient
    • Converts from liquid to steam, absorbing heat in the process
    • Good range and penetration
    • Absorbs more heat per volume than any other agent
  • AFFF:
    • Does not leave a residue
    • Non-freezing
    • Limited range
    • Affected by wind
  • Dry Powder:
    • Can be hazardous if used in a confined or unventilated space
    • Cold shock to electrical equipment
  • Dry Chemical:
    • Limited cooling effect
    • Leaves a residue
    • Can be corrosive
  • Multi-Purpose Dry Chemical:
    • Leaves a residue
    • Limited range
    • Limited cooling effect
  • Class A Foam:
    • Leaves a residue
    • Will freeze
    • Requires selection of correct foam for the fire application

Fire Stages

  • Incipient: early stages of a fire
  • Growth: fire spreads rapidly
  • Fully Developed: fire at its peak
  • Decay: fire begins to decline

Toxic Smoke

  • Made up of various gases produced during combustion
  • Examples: carbon monoxide, hydrogen cyanide, and chlorine
  • Recognition signs:
    • Dense black smoke
    • Fire gases filling the fire area
    • Rollover visible
    • Little or no visible flame
    • Smoke emanating under pressure from cracks
    • Smoke drawn back in
    • Smoke exiting in puffs or intervals
    • Black smoke becoming dense grey yellow
    • Smoke-stained or blackened windows

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Description

This quiz covers the importance of isolating a vehicle in different scenarios. Test your knowledge on vehicle safety and isolation procedures.

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