Environmental Engineering Reference
In-Depth Information
Event
Condition
Condition
•e sequence of real-time
happenings or actions
Condition
(Root Cause)
Condition
Condition
Any as-found or existing state
that influences the outcome of a
particular task, process, or operation
Condition
(Contributing
Cause)
Condition
(Contributing
Cause)
Condition
Condition
(Direct Cause)
Condition
Conditions that may exist but
are not identified
(Potential)
Event
Event
Event
FIgure 9.2
Causal.factor.relationships..( Source: .Courtesy.of.the.United.States.Department.
of.Energy.)
C onDitions
Conditions.are.the.states.or.circumstances.surrounding.the.accident,.rather.than.the.
happenings..They.are.inactive.elements.that.increase.the.possibility.for.the.accident.
to.occur..An.example.of.this.would.be:.“The.ground.is.wet.”.Just.like.events,.when.
possible.conditions.should.be.described,.quantiied,.and.posted.with.time.and.date..
Always.record.the.conditions.immediately.preceding.the.event..An.example.of.this.
would.be.that.the.worker.did.not.know.how.to.stop.the.backhoe.from.rolling.down.
the.hill,.and.the.worker.lost.control.of.the.backhoe.
C ontributing f ACtors
Contributing.factors.can.be.events.or.conditions.that.alone.do.not.cause.the.accident.
to.occur..They,.along.with.conditions.and.events,.increase.the.probability.of.the.acci-
dent.occurring..They.“set.up”.the.accident.to.occur..For.example,.“The.road.is icy.”.
This.contributing.factor.can.set.up.a.number.of.accidents,.for.example,.a.slip.and.fall;.
or.a.motor.vehicular.accident,.either.hitting.another.motor.vehicle,.hitting.a.station-
ary.object,.or.hitting.a.person.
s EConDAry E vEnt
Secondary.events.are.events.that.are.not.directly.related.to.the.accident..However,.
they.are.like.contributing.factors,.in.that.they.are.indirectly.related.to.the.accident,.
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