UNIT 3 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX
3-1) Tell what causes accidents and how they can be eliminated on the job site.
3-2) What is PPE?
3-3) Discuss ladder safety.
Only use CSA or ANSI-approved ladders. Maintain ladders in good condition.
Inspect ladders before each use and discard ladders needing frequent repairs
or showing signs of deterioration. All portable ladders must have no slip feet.
3-4) Discuss scaffold safety.
Scaffolds must be supported by solid footings. A scaffold having a height
3-5) What is the difference between fall prevention equipment and fall arresting
equipment?
3-6) Describe how cold can cause a burn on skin.
3-7) List harmful respiratory substances.
3-8) Explain some of the dangers of refrigerants.
3-9) Explain what material appears on every Safety Data Sheet (SDS).
Identification of the chemical and the essential contact information of the
3-10) Discuss how to safely use hand tools.
Keep all hand tools sharp, clean, and in safe working order. Defective tools
3-11) Discuss how to safely use power tools.
Only use power tools that are properly grounded. Stand on dry
3-12) Discuss how to practice safety in the shop.
Keep the shop or laboratory floor clear of scraps, litter, and spilled liquid.
Store oily shop towels or oily waste in metal containers in an open, airy place.
3-13) List five types of fire extinguishers.
3-14) Tell how to safely lift heavy objects.
3-15) Discuss safe welding cylinder practices.
3-16) Discuss electrical safety rules.
Check all circuits for voltage before doing any service work. Tag and lock out all
3-17) When a refrigerant cylinder needs to be warmed, how should it be done?
3-18) How should used refrigerants and refrigerant oils be disposed of?
3-19) Discuss refrigerant system safety.
Never use oxygen or acetylene to pressurize a system. Oil that is in the system will
not mix with oxygen or acetylene and may cause an explosion. Use dry nitrogen
3-20) List three major hazards of pressure vessels.
The blast from the sudden explosion can cause serious internal injury.
3-21) Discuss how a technician’s driving record can affect his employability.
3-22) Tell what steps should be followed in case of an accident.
If the injuries appear to be serious, call 911 or your local emergency number.
First aid should be administered, if needed, only by those qualified to do so. All