current from accidentally passing through your body. Also,
never use an electric tool on a wet shop floor.
Warning: Use extreme caution when work-
ing with hybrid vehicles. They operate at
voltages as high as 600 volts AC. This is
enough electricity to kill.
Physical Injury
Physical injuries, such as cuts, broken bones, and
strained backs, can result from hundreds of different acci-
dents. As an engine technician, you must constantly think
and evaluate every repair technique. Decide whether a
particular operation is safe or dangerous and take action as
required. For example, why move an engine block by hand
when a crane is available? You and a friend may be strong
enough to lift the engine block, but why risk back injury?
Once your back is injured, it will never be the same!
General Safety Rules
The following list provides several general safety
rules. Remember these and follow them at all times.
Wear appropriate eye protection during any operation
that could endanger your eyes! See Figure 5-9. This
includes operating power tools, working around a
Chapter 5 Shop Safety 115
Figure 5-7. When working around airborne toxins, wear an approved
respirator. It will help keep harmful chemicals out of your lungs.
Figure 5-8. Battery acid can cause severe chemical burns.
Make sure you read and follow label directions on caustic prod-
ucts. Note the treatments (antidotes).
Figure 5-9. Wear appropriate eye protection. There are several types available for different situations.
Safety Glasses Safety Goggles Full Face Shield
Tinted Safety Glasses Welding Goggles Welding Helmet