Environmental Engineering Reference
In-Depth Information
AsBestos WAste dIsPosAl sIte
BreAthIng AsBestos dust mAy cAuse lung dIseAse And cAncer
FIgure 23.1
Asbestos.warning.sign.
controls,.respirators,.protective.clothing,.exposure.monitoring,.hygiene.facilities.and.
practices,. warning. signs,. labeling,. recordkeeping,. and. medical. exams.. Nonasbesti-
form.tremolite,.anthophyllite,.and.actinolite.were.excluded.from.coverage.under.the.
.asbestos.standard.
Here.are.some.of.the.highlights.of.the.revised.rules.in.29.CFR.1910.1001,.pro-
mulgated.October.11,.1994:
.
1.
Permissible exposure limit (PEL):
.In.both.general.industry.and.construc-
tion,.workplace.exposure.must.be.limited.to.0.1.ibers.per.cubic..centimeter.
of. air. (0.1. f/c
3
),. averaged. over. an. 8-hour. work. shift.. The. excursion. or.
short-term. limit. is. one. iber. per. cubic. centimeter. of. air. (1. f/c
3
). averaged.
over.a.sampling.period.of.30.minutes.
.
2..
Methods of compliance:
.In.both.general.industry.and.construction,.employ-
ers.must.control.exposures.using.engineering.controls,.to.the.extent.feasible..
Where.engineering.controls.are.not.feasible.to.meet.the.exposure.limit,.they.
must.be.used.to.reduce.employee.exposures.to.the.lowest.levels.attainable.
and.must.be.supplemented.by.the.use.of.respiratory.protection.
.
3..
Respirators:
. In. general. industry. and. construction,. the. level. of. exposure.
determines. what. type. of. respirator. is. required;. the. standards. specify. the.
respirator.to.be.used.
.
4..
Regulated areas:
. In. general. industry. and. construction,. regulated. areas.
must. be. established. where. the. 8-hour. Time. Weighted. Average. (TWA). or.
30-minute. excursion. values. for. airborne. asbestos. exceed. the. prescribed.
permissible.exposure.limits..Only.authorized.persons.wearing.appropriate.
respirators.can.enter.a.regulated.area..In.regulated.areas,.eating,.smoking,.
drinking,.chewing.tobacco.or.gum,.and.applying.cosmetics.are.prohibited..
Warning.signs.must.be.displayed.at.each.regulated.area.and.must.be.posted.
at.all.approaches.to.regulated.areas..(See.Figure 23.1.)
.
5.
Labels:
.Caution.labels.must.be.placed.on.all.raw.materials,.mixtures,.scrap,.
waste,.debris,.and.other.products.containing.asbestos.ibers.
.
6..
Recordkeeping:
The.employer.must.keep.an.accurate.record.of.all.measure-
ments. taken. to. monitor. employee. exposure. to. asbestos.. This. record. is. to.
include.the.date.of.measurement,.operation.involving.exposure,.sampling.and.
analytical.methods.used,.and.evidence.of.their.accuracy;.number,.duration,.
and. results. of. samples. taken;. type. of. respiratory. protective. devices. worn;.
name,.social.security.number,.and.the.results.of.all.employee.exposure.mea-
surements..This.record.must.be.kept.for.30.years.
.
7..
Protective clothing:
.For.any.employee.exposed.to.airborne.concentrations.
of. asbestos. that. exceed. the. PEL,. the. employer. must. provide. and. require.
