Chapter Nineteen – FIRE HAZARDS AND LIFE SAFETY
TRUE OR FALSE: Place T or F in the space provided.
_____1. Fire hazards are conditions that favor fire development or growth.
_____2. The product of combustion is energy in the form of light.
_____3. Chemical reactions in a fire break materials down into basic
elements.
_____4. Exothermic reactions generate light.
_____5. Carbon is found in almost every &ammable substance.
_____6. Carbon monoxide is not a colorless, odorless, deadly gas.
_____7. Cooling is not one of the principal ways to control a fire or extinguish
it.
_____8. An explosion is a very rapid, contained fire.
_____9. Flammable liquids have a &ash point below 100F.
_____10. Most gases are heavier than air.
_____11. OSHA defines hot work as welding, cutting, chipping, and the use of
tools that cause sparks.
_____12. PEL is the Permissible Exposure Limit (PEL) of a vapor expressed in
parts of vapor per million parts of contaminated air.
MULTIPLE CHOICE: Circle the letter before the correct answer.
1. What are the three elements required for starting and sustaining fire?
A. Heat, smoke, and fire
B. Smoke, fuel, and heat
C. Fuel, heat, and oxygen
D. Oxygen, fire, and smoke
2. Fires are classified according to their properties, which relate to the nature
of the fuel. What class of fire has a metal fuel?
A. Class A
B. Class B
C. Class C
D. Class D
3. Which of the following are products of combustion?
A. Solids, vapors, oxidizers, and hydrogen
B. Gases, &ame, heat, and smoke
C. Oxygen, hydrogen, and vapor
D. Vapors, oxidizers, and fuel
4. The result of incomplete combustion of fuel is carbon monoxide, which is
A. Odorless
B. Colorless
C. Deadly gas
D. All of the above
5. The National Fire Protection Association has devised a system, NFPA 704,
for quick identification of hazards presented when substances burn. Which
color would be used to identify reactivity?
A. Red
B. Blue
C. Yellow
D. White
6. Which of the following would not be considered hot work?
A. Brazing
B. Soldering
C. Pressure washing
D. Chipping
7. The weight of a &ammable vapor compared to air is called which of the
following?
A. Lower &ammable limit
B. Vapor density
C. PEL
D. Upper &ammable limit
12. T
7. B
1. What are the three elements of the fire triangle?
2. Fire is a chemical reaction. What is going on?
3. Where is carbon found?
4. Compare and contrast carbon monoxide and carbon dioxide.
5. How is combustion of liquids and solids diDerent from gases?
6. What are the three methods of heat transfer? Describe each.
7. What can happen to a pile of oil-soaked rags in a closed container?
Describe the process.
8. In which direction does a fire normally travel?
9. Name something in this room that will not burn.
10. What are the classes of fire?
11. What property do almost all packing materials share?
12. What are the diDerences between &ash point, fire point, and auto–
ignition temperature?
13. Which are more stable, combustible liquids or &ammable liquids?
14. Which way do gases usually travel?
15. Describe the NFPA hazards identification system.
16. In what four ways can electricity cause a fire?
17. What are the leading causes of fire-related deaths?
18. What are some of the toxic chemicals often produced by fires?
19. What are some of the systems utilized by smoke detectors?
20. What is the most successful life-saving preparation for a fire disaster?
21. Explain the best ways to prevent an oBce fire.
22. What is the trend with regard to future fire safety standards?
23. Define the term life safety.
24. What types of fabrics are prohibited in environments that are &ame or
arc prone?
25. Explain brie&y OSHA’s regulations for fire brigades.
26. Summarize the key components of a fire safety program.
27. Describe the precautions that should be taken for dip tanks, oil burners,
and spray-painting booths.
28. Explain all three of OSHA’s manual fire fighting options.