Carpentry 1 - Fire prevention and control

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Author:
Anonymous
ID:
266650
Filename:
Carpentry 1 - Fire prevention and control
Updated:
2014-03-16 16:29:38
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Theory
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Theory
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Carpentry 1 - Fire prevention and control
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  1. What are the 3 elements necessary for fire to occur?
    • 1. Oxygen
    • 2. Heat
    • 3. Fuel
  2. Is sufficient oxygen available to support a fire on a construction site?
    Yes. Duh.
  3. List the 4 classifications of fire
    • 1. Class A - ordinary combustibles
    • 2. Class B - flammable liquids
    • 3. Class C - electrical
    • 4. Class D - combustible metals
  4. What is the difference between the fire fighting capacity of a 4A and an A ULC rated extinguisher?
    4A has 4 times the capacity
  5. What must take place in solids and liquids before burning can occur?
    vaporization of the surface
  6. Who is responsible for maintaining a portable extinguisher once it is in service?
    Owner/operator
  7. What are the 3 goals of a 'fire watcher'?
    • To prevent:
    • 1. Fire
    • 2. Personal injury
    • 3. Property damage
  8. What is the primary safety feature of an industrial site?
    Automatic sprinkler system
  9. When is it safe to enter a building after a fire?
    When 'all clear' signal is given
  10. List the 4 steps of proper portable extinguisher use
    • Pull
    • Aim
    • Squeeze
    • Sweep
  11. What is a good example of a 'stable fuel' for a fire?
    Wood
  12. What is an example of an unstable fuel?
    Gaseous acetylene
  13. What has to happen for fuel to ignite?
    Increase temperature of the fuel to a point where sufficient vapors are given off to allow ignition to occur.
  14. What are the 3 forms of possible ignition?
    • 1. Piloted - flame or spark
    • 2. Auto - temperature high enough
    • 3. Spontaneous - temperature above auto-ignition temp (varnish on a rag)
  15. How are Class A & B fire extinguishers rated?
    Size-rated
  16. What kind of fire extinguisher can be used for all, except Class D (combustible metals)?
    Multipurpose dry chemical
  17. Which extinguisher type is only good for ordinary type combustibles?
    Water type
  18. What kind of fire are carbon dioxide and dry chemical extinguishers good for? (2)
    • 1. Class B (flammable liquids) and
    • 2. Class C (electrical equipment
  19. Which type of extinguisher should you use for Class D (combustible metals)?
    Special extinguisher agents approved by recognized testing laboratories
  20. How are carbon dioxide cylinders serviced?
    Weighed to determine the extinguishing agent remaining
  21. Where should you shoot the fire?
    At the base
  22. What should you NEVER use in the evacuation of a building?
    Elevator. Take the stairs, Lazy.
  23. What are the 3 signals of a fire alarm system?
    • 1. Alarm (immediate action)
    • 2. Supervisory (problem with sprinkler system)
    • 3. Trouble (fault in monitored circuit)

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