1. Electrical Safety Awareness Un-Qualified
The word Unqualified was added to the title.
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2. Training Objectives Discuss how electricity can hurt you.
Recognize how to avoid electrical hazards.
Describe how to work safely around energized electrical equipment
Locate electrically dangerous or unsafe conditions
Item 4 was changed from Locate dangerous electrical conditions.
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4. Why Respect Electrical hazards?
ON THE JOB
Electrocutions were the fifth leading cause of death from 1980 through Causing an average of 411 deaths per year.
AT HOME
The 5,348 deaths per year caused by electrocutions accounted for % of all fatalities
Data from the NIOSH National Traumatic Occupational Fatalities (NTOF) surveillance system
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5. Electrical hazards consist of:
Electrocution (fatal),
Electric shock,(non-fatal / but HURTS)
Burns, (internal and external)
Falls caused as a result of contact with electrical energy. (ancillary accidents)
Electrocution
Through the body causing neurological damage and internal burns That results in DEATH
Electric Shock
Nonfatal
Burns
Falls
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6. How Does Electricity Work? How do you get Electrocuted?
Flow of Electrons
Current Carrying
Wires
Energized
Conductors
Through
You
Motor
Lights
Home may get 100 Amps
One circuit in a home may get 15 or 20 amps
1 milliamp is 1/1000 of one amp
And 100 Milli amps is enough to kill you.
Electrical Current
Electrical
Generation
Electron Flow Back to Earth Ground
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7. Electrical Current Kills
Resistance to Electrical Current Protects You
Resistance Examples:
Insulation on wires
Distance from parts
Removing conductive
Jewelry
Not standing in water
With Insufficient Resistance
Hand to Hand Current
Hand to Foot Current
This whole graphic was changed to show how (on the left side) resistance protects you and (on the right) how Insufficient resistance will result in current through you and through your heart.
Results in Current
Through the Heart
Earth Ground
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8. Electrical Current Kills
This arc is an example of a
Truly Unguarded
Electrical Current
The arc in ARC welding is truly unguarded electrical current.
Energized
Rod
Earth Ground
Not Through You
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9. Electrical Current Kills
Energized Wire
Electrical Current Kills
Not Through You
Ground
One Source and
Many Paths to
Earth Ground
Standing in Water
Earth Ground
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10. Water and electricity do not mix
Water provides a path for electricity to travel through you. So Please Do Not:
Stand on wet surfaces when operating electrical equipment.
Spray or splash water around electrical equipment
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11. Extent of injuries received depends on
Magnitude of current (measured in Amperes)
Pathway of the current through the body
Duration of current flow through the body
Since the video only shows shock and “let go” this is a good time to introduce the fact that a small electric current can also result in a No LET GO condition. The example with the kitchen circuit breaker should bring home the point.
Or in other words if you thought that circuit breakers
were installed for you protection then you were only
1000 percent wrong. They are to protect the house
from burning down not to protect you from shock.
When was the first electrocution?
1879
Who was electrocuted
A Frenchman working in a theater
His trade was Carpenter
Fraction of a Second
20 Milli Amperes
Currents of less than 20 Milliamperes (20/1000 of an ampere)
can cause you to Not Let Go even if you are being shocked.
This small current is 1/1000 of the electricity that will trip a
20 amp. kitchen circuit breaker in your home.
video
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12. Electrical Safety Related
Work Practices
Covers both Qualified and
Unqualified employees
working near electrical
conductors and equipment.
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13. Electrical Safety Related Work Practices
Qualified Person:
Is one who has the skills and knowledge related to the
construction and operation of the electrical equipment
And installation and has received safety training on the
Hazards involved.
Unqualified Person:
An individual who is not permitted to work on electrical
equipment because they do not have the necessary
Skills and training to perform the work safely.
These two definitions come from KODAK Electrical Safety manual section 3.1 (1) Qualified Person.
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14. Exposed Energized Parts
Only qualified persons are allowed to work on or near exposed energized parts.
Energized parts that have been de-energized but not locked out shall be treated as
ENERGIZED
When in Doubt
Lock it Out
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15. Conductive Materials and Equipment
• Conductive materials (pipes, metal ladders) must be kept away from all energized electrical circuits.
• Safe work practices must be used when working
with long conductive objects.
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16. Ladders Conductive Apparel Conductive clothing and jewelry
Ladders must be dry nonconductive
materials if used around energized parts.
Dry Wood or Composite Materials
Conductive Apparel
Conductive clothing and jewelry
cannot be worn if they can come
in to contact with energized parts.
Metal Frame Glasses, Keys, Pens, Belt Buckles
Examples of Conductive Apparel are now added for reference.
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17. Vehicular and Mechanical Equipment Near overhead power lines
Equipment must be kept at least 10 ft away.
Employees may not contact scissor lifts on the ground while electrician working above.
Vehicles in Transit must be
kept at Least 4 ft away.
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18. General Protection
• Covers shall be closed on Electrical Equipment during operation.
Don’t Reach Inside Energized Electrical Equipment
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19. Illumination Spaces and work areas that contain
energized electrical apparatus must be well lighted.
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20. Work in Confined Spaces
Employees working near exposed energized parts shall be provided with … protective shields, barriers or insulating materials in order to prevent inadvertent contact with energized parts.
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21. Alerting Techniques
Safety signs, tags, barricades and sometimes attendants must be used to alert employees of electrical hazards.
.335 (b) (1) & (2) & (3)
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22. Housekeeping Duties Keep areas clear. Keep liquids out.
Adequate safety precautions and
nonconductive cleaning materials
must be used around energized electrical equipment.
Keep areas clear.
Keep liquids out.
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23. Power and Lighting Circuits
• Always use a switch before pulling a cord.
If a switch is available
Unplug equipment before you work on it.
• Always replace a fuse with the proper size fuse that was designed for the equipment.
Don’t overload circuits.
Explain:
Why turning off a switch is better than pulling a plug. Use the vacuum cleaner example.
Explain how some equipment can still start with the switch off or if plugged in backwards how the equipment can still be energized with the switch off.
Then show examples how circuits can be overloaded and why fuses should never be replaced with a higher rated fuse.
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24. Operating Electrical Disconnects
Secure the Front Cover
Stand to the Side
Look Away
Operate Switch
Reset Circuit Breakers Once
Then get Qualified Employee if it trips out again.
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25. Lockout, your first defense.
Lockout Training should be taken if:
You bypass any guards or
You service equipment where it could start up or the release of energy could harm you or
You put yourself in a danger zone when you perform service and maintenance.
Television Example
Computer monitor
Stored Energy
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26. Portable Electric Equipment
• Check cord for defects (a) 2
• Cords to have third ground prong.
• Cords must be suitable for location
Can not lift or lower by cord (a) 1
Can Not be run through a door
Defects:
Cracks, brittle, gouges
Third Ground Plug
Explain Polarization if third plug is missing
Suitable for location includes
Indoor / Outdoor
Industrial strength
Oil resistant
Grounding
Double
Insulated
Polarization
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27. Protective Equipment
Typical Hard hats (type A and B) are non-conductive head protection.
Non-Conductive Safety Glasses provide some protection to electrical blast dangers and inadvertent electrical contact
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28. Suggested Electrical Hazard Footwear
Electrical Hazard Protection Shoes:
Can be almost any style including steel toe
Should be kept dry for best protection
EH shoes are NOT the same as
Electrical Static Shoes
E H
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29. GFCI Protection
Measures current to load and current coming back. The difference could be current going through you.
Opens the circuit in milli-seconds
Opens with less than 7milliampers of current difference
Can be a fixed receptacle
Can be part of circuit breaker
Can be a fixed plug
Test before each use on Portable Cord Sets
Supply
Load
Test
Reset
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30. Can You Now Locate Electrically Dangerous or Unsafe Conditions
At Work:
Overloading Circuits
Electrical Covers Closed
Conductive Materials and Equip
Others __________
At Home:
Extension Cords
Polarized Plugs
GFCI’s
Others _______
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31. THANKS
Be Careful from now on!

32. Thank you for your Attention
Did we meet our objectives?
Can you now:
Discuss how electricity can hurt you
Recognize how to avoid electrical hazards
Describe how to work safely around electrical equipment
Locate electrically dangerous or unsafe conditions
                   
Item four was changed to match with the objectives in slide #2.
Fill Out Your
Evaluations
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33. Questions