Environmental Engineering Reference
In-Depth Information
tABle 7.3
direct and Indirect causes of Accidents
AccIdent cAuse levels
direct causes of Accidents
Indirect causes of Accidents
unsafe Acts
(may equal 95% of all accidents)
energy sources
Mechanical:
Failing.to.use.personal.protective.equipment
.
Machinery
Failing.to.warn.co-workers.or.to.secure.equipment
.
Tools
Engaging.in.horseplay
.
Moving.objects
Lifting.improperly
.
Strain.(self)
Loading.or.placing.equipment.or.supplies.improperly
.
Compressed.gas
Making.safety.devices.inoperable
.
Explosives
Operating.equipment.at.improper.speeds
Electrical:
Operating.equipment.without.authority
.
Uninsulated.conductors
Servicing.equipment.in.motion
.
High-voltage.sources
Taking.an.improper.working.position
Chemical:
Using.alcoholic.beverages
.
Acids
Using.drugs
.
Bases
Using.defective.equipment
.
Fuels
Using.equipment.improperly
.
Reactive.materials
unsafe conditions
(may equal 5% of all accidents)
Thermal:
. Flammable
. Nonlammable
Radiation:
.
Congestion.of.workplace
Defective.tools,.equipment,.or.supplies
Excessive.noise
Fire.and.explosion.hazards
Hazardous.atmospheric.conditions:
. Gases
. Dusts
. Fumes
. Vapors
Inadequate.supports.or.guards
Inadequate.warning.systems
Poor.housekeeping
Poor.illumination
Poor.ventilation
Radiation.exposure
Noise
.
Lasers
.
Microwaves
.
X-rays
.
Radioactive.materials
hazardous materials
Compressed.or.liqueied.gas:
. Flames
. Hot.surfaces
Corrosive.material
Flammable.material:
.
Solid
. Liquid
. Gas
Oxidizing.material
Poison
Radioactive.material
Etiological.agent
Dust
Explosive
