Canadian Centre for Occupational Health and Safety
Symbol of the Government of Canada
Health and Safety: Teaching Tools


  1. d
  2. d
  3. a
  4. c
  5. b
  6. d
  7. a
  8. c
  9. Grounding means electrical connection to the ground. In a three prong power cord, one of the wires is grounded. In effect, this connects the housing of an appliance to the ground. Grounding protects us from an electrical shock in case a fault develops and the body of the appliance or equipment comes in contact with the live electrical wire.
  10. Machine guarding prevents access to moving parts, rotating, in running nips, high energy sources and hot parts. This eliminates the chances of injury.
  11. Lockout is switching off the power and placing a lock on the power source so that no one can set the machine or equipment in motion. Lockout prevents accidental starting of the machine and thus prevents chances of injuries to workers.
  12. b
  13. b