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2. AVOID ARC FLASH
ELECTRICAL HAZARDS T
©2007 Bongarde

3. WHAT’S AT STAKE
If you have to work on equipment that cannot be de-energized before you work on it, you need knowledge about arc flash
It can cause traumatic injuries and death

4. WHAT’S THE DANGER Short circuit through air
Large amounts of light and heat are released explosively
Waves of energy
Superheated ball of gas
Loose or damaged equipment or tools

5. WHAT’S THE DANGER Amount of heat can be very large
How much energy passes through the system
How long the worker is exposed
Distance from where flash is produced

6. EXAMPLE: Mike and Bob knew every electrical part of the plant
Into the panel switch room for maintenance
Didn’t think of wearing personal protective equipment
Knew the panel must be left energized

7. EXAMPLE: They heard a crackling and rumbling and a loud explosion
Room filled with noise and fire
Had second and third degree burns, difficulty breathing and couldn’t hear

8. HOW TO PROTECT YOURSELF
Get training
De-energize and lockout/tagout
Follow electrical safety codes
Conduct arc flash analysis
Personal protective clothing and equipment
“Arc Flash Hazard” label

9. Final Word
Arc flashes are dangerous. Death from their injuries is a real possibility.