Environmental Engineering Reference
In-Depth Information
the joB sAFety/hAzArd AnAlysIs Worksheet
After.a.job.has.been.selected.and.the.JSA/JHA.has.been.initiated,.a.worksheet.is.pre-
pared.listing.the.basic.job.steps,.the.corresponding.hazards,.and.the.safe.procedures.
for.each.step..The.basic.form.generally.has.three.columns..In.the.left.column,.the.
Sequence.of.Basic.Job.Steps.is.listed.in.the.order.in.which.they.occur..The..middle.
column. describes. all. Potential. Accidents. or. Hazards.. The. right. column. lists. the.
Recommended.Safe.Job.Procedures.that.should.be.followed.to.guard.against.these.
hazards.in.order.to.prevent.potential.accidents.(see.Figure 12.1).
sePArAtIng the joB Into Its BAsIc stePs
In. the. JSA. process,. it. is. easiest. to. deal. with. each. column. of. the. form. separately..
Logically,. the. job. should. be. broken. down. into. its. basic. steps. irst.. Each. step. or.
.activity.should.briely.describe.what.is.done..Each.activity.should.be.listed.on.the.
form.in.the.order.it.is.accomplished.
Avoid.the.common.errors.of.making.the.breakdown.so.detailed.that.an.unnec-
essarily. large. number. of. steps. result,. or. making. it. so. general. that. basic. steps. are.
omitted..If.a.large.number.of.steps.result.from.the.analysis.(i.e.,.more.than.ifteen),.
consider.breaking.down.that.job.into.more.than.one.JSA/JHA.
At. this. point. in. the. analysis,. you. need. to. do. two. things:. irst,. observe. the. job.
actually.being.performed.(if.possible.by.more.than.one.person);.and.second,.involve.
at.least.one.employee.who.does.the.job.regularly.in.the.analysis..The.employee(s).
selected.to.assist.in.the.analysis.should.be.briefed.on.the.purpose.of.JSA/JHA.and.
the. mechanics. of. how. a. JSA/JHA. is. developed.. There. are. several. ways. to. get. the.
JSA/JHA.process.started.with.an.employee..Have.him.or.her.review.a.list.of.basic.
job.steps.that.have.developed.from.observations,.or.have.the.employee.explain.what.
the.job.steps.are..The.important.thing.is.that.the.JSA/JHA.creator.and.the.employee.
or.supervisor.mutually.agree.that.the.JSA/JHA.accurately.relects.the.steps.involved.
in.the.job.
sequence oF BAsIc joB stePs
The.irst.step.might.be.to.do.a.walk-around.inspection..When.outlining.the.job.steps,.
it.will.be.tempting.to.get.very.detailed.and.list.how.to.do.the.job.rather.than.the.basic.
job.steps..An.example.of.this.would.be.to.list.each.component.of.a.machine.that.the.
worker.will.check.(visual.examination.of.tires,.light.lens.glass,.guards,.hoses,.etc.).
as.a.job.step..If.there.is.a.desire.to.include.this.information.in.a.JSA/JHA,.it.is.best.
included.in.the.third.column.(“Recommended.Safe.Job.Procedures”.in.Table 12.1)..
Another.alternative.is.to.add.a.fourth.column.to.the.form.for.this.purpose.
The.list.of.job.steps.in.the.Sequence.of.Basic.Job.Steps.column.of.the.JSA/JHA.
form.(Table 12.1).will.continue.to.be.broken.down.into.manageable.steps..Again,.the.
general.rule.of.thumb.is.to.try.to.keep.the.JSA/JHA.between.ten.and.ifteen.basic.
steps..If.more.than.ifteen.steps.exist,.the.JSA/JHA.creator.may.be.trying.to.include.
too.much.information.in.a.single.JSA/JHA.
