ch 3.txt

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hispeeddev
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203458
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ch 3.txt
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2013-03-06 18:23:08
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ch 3
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  1. Most face shields made out of polycarbonate will begin to melt at which of the following ranges of temperature.
    250 - 300 degrees F.
  2. A melting face shield should be a signal to the firefighter that -
    The environment the firefighter is in, is extremely hot and dangerous.
  3. The traditional function of the fire helmet was to -
    To shed water.
  4. Safety glasses and goggles protect against __ of all eye hazards.
    85%.
  5. Earing protection should be used by firefighters in the United States if exposed to noise levels of -
    90 dBa.
  6. The most common use of ear protection for firefighters, is to protect the firefighter's hearing while -
    Riding apparatus that exceeds the maximum noise exposure levels.
  7. The most interior layer of a turnout coat protects the firefighter from -
    Severe heat.
  8. A built-in harness and hand loop at the back of the neck that permits a rescuer to grab an drag a downed firefighter is called a -
    Drag Rescue Device (DRD).
  9. It is recommended that wldland firefighters where underwear made of -
    100% Cotton.
  10. NFPA 1581, Standard on Fire Department Infection Control Program, requires that personal protective clothing be cleaned and dried at least every __ in accordance with manufacturer's recommendations.
    6 months.
  11. A condition caused by a deficiency in the amount of oxygen reaching the body tissues is referred to as-
    Hypoxia.
  12. The accumulation of fluids in the lungs is known as -
    Pulmonary Edema.
  13. A condition that causes death because of a deficient amount of oxygen and excessive amount of carbon monoxide and/or other gases in the blood is known as -
    Asphyxiation.
  14. At what concentration of atmospheric oxygen will a firefighter experience some impairment of muscular coordination?
    17%.
  15. At what concentration of atmospheric oxygen content will a firefighter experience dizziness, headache, and rapid fatigue?
    12%.
  16. Unconsciousness will result at what concentration of atmospheric oxygen?
    9%.
  17. At what percentage of atmospheric oxygen will result in respiratory failure?
    6%
  18. Which compound results in more fire deaths than any other toxic product of combustion?
    Carbon monoxide.
  19. The type of toxic gases given off at a fire vary according to the nature of the combustion, the rate of heating, the temperature of the evolved gases, and the -
    Oxygen concentration.
  20. Which gas has a bitter almond odor?
    Hydrogen cyanide.
  21. Which gas has a reddish-brown color and a pungent, acrid odor?
    Nitrogen dioxide.
  22. Which gas is the end product of complete combustion of carboniferous materials?
    Carbon dioxide.
  23. Which gas is the end product of incomplete combustion?
    Carbon monoxide.
  24. Black smoke has a high concentration of particulate carbon and carbon monoxide because -
    Black smoke is a result of incomplete combustion.
  25. The danger of inhalation of CO is that it binds to hemoglobin 200 times more readily than does oxygen, thus precluding oxygen from the blood. This powerful combination is often known as -
    Carboxyhemoglobin.
  26. At what concentration in the air is carbon monoxide considered dangerous?
    0.10 percent/1000 ppm
  27. At what concentration of CO can result in unconsciousness after 1 hour?
    1000 ppm.
  28. Hydrogen Chloride (HCL) is a colorless gas, with a pungent odor, and is an intense irritant to mucous membranes. These gases are primarily released during fires as a result of the combustion of -
    Plastics
  29. You are called to the scene of an interior aircraft fire which contains a great deal of polyurethane foam. What toxic gas should you be particularly concerned about?
    Hydrogen cyanide
  30. Your engine company has been called to the scene of a supermarket, where a row of freezers are on fire. Which compound can you expect to be present?
    Phosgene.
  31. Which of the following compounds is often called "Silo Gas?"
    Nitrogen dioxide.
  32. A 1% concentration of carbon monoxide in a room will cause a __ level of carboxyhemoglobin in the bloodstream within 2 1/2 to 7 minutes.
    50%.
  33. Which toxic gas may you expect to be stored at facilities where wood alcohol, ethylene, dry ice, or carbonated soft drinks are manufactured?
    Carbon dioxide.
  34. Besides freon, which of the following would be considered dangerous refrigerants that irritate the respiratory track and eyes?
    Ammonia / Sulfur dioxide.
  35. Which gas would you expect to find in a water treatment plant?
    Chlorine gas.
  36. Before donning SCBAs, a firefighter should check both the cylinder gauge and the regulator gauge, to make sure the cylinder is full, and that the two readings are within -
    100 psi of each other.
  37. PASS devices should be checked at least -
    Before each use / Daily
  38. Firefighters should be retrained in using the PASS device every -
    Six Months
  39. When donning an SCBA facepiece the which straps should be tightened first?
    The lower straps should be tightened first.
  40. Air cylinders must be stamped or labeled with the date of manufacture and the date of the cylinder's last hydrostatic test. Composite cylinders should be tested?
    Every 3 years.
  41. Air cylinders must be stamped or labeled with the date of manufacture and the date of the cylinder's last hydrostatic test. Steel and aluminum cylinders should be tested?
    Every 5 years.

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