13-06-2013, 03:51 PM
Electrical Safety
Electrical Safety.ppt (Size: 528.5 KB / Downloads: 86)
Why Worry About Electricity?
Deaths. Electrocutions rank FOURTH (9%) in causes of industrial FATALITIES (behind traffic, violence and construction). The National Safety council estimates 600 people die every year of electrical causes. Most of these accidents involve low voltage (600 volts or less).
Roughly 3,600 disabling electrical contact injuries occur every year in the United States, along with another 4,000 non-disabling injuries.
Effects on your body:
A small night-light with a 6-watt bulb draws .05 ampere, and even that small amount of current can be fatal. Here are some effects of current (in milli amps) passing through a 150 pound body (note that perception is only .5 to 1.5 milli amps):
Avoid the following unsafe acts:
Failure to de-energize, lockout & tagout
hazards
during maintenance, repair or inspections.
Use of defective and unsafe tools.
Use of tools or equipment too close to energized parts.
Not draining off stored energy in capacitors.
Using 3-wire cord with a 2-wire plug.
Removing the third prong (ground pin) to make a 3-prong plug fit a 2-prong outlet.
Overloading outlets with too many appliances.
Using the attached electrical cord to raise or lower equipment.
Not verifying power is off when making repair (drilling into a 110 Volt a.c. line can kill).
Working in an elevated position near overhead lines.
Hazardous Environments
Use special precautions when
working in potentially hazardous
environments and situations.
Even an accidental static discharge
can cause a fire or explosion in areas
where the following are present:
Flammable vapors, liquids and gasses
Combustible dusts
Corrosive atmospheres
Explosive environments
Poor housekeeping: blocked
electrical boxes, flammable materials
stored in equipment rooms, lack of proper hazard signs, excess clutter.