Transcript Asbestos (Awareness) - University of South Carolina Upstate

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DHEC
◦ Disturbance of ACBM during renovations and
demolitions
◦ Focus on environmental impact
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OSHA
◦ Disturbance of ACM during renovations, demolition,
maintenance
◦ Work practices, training, exposure limits
◦ Focus on worker protection
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Separate into smaller and smaller fiber bundles when
disturbed or handled – up to 700 times smaller than
human hair
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Resistant to heat, bacteria and chemicals
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Great tensile strength and stiffness
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Excellent electrical and thermal insulator
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Noise insulator
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Resistant to effects of friction and wear
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1973 – banned in thermal, surfacing, fireproofing
materials
Commonly found in
o Floor tiles (9” x 9” and 12” x 12”) – most common
o Ceiling tiles
o TSI (water, steam and chilled water lines)
o Fireproofing (Jones PSC, Law Center, Capstone)
o Transite panels
o Tank insulation
o Acoustical spray (popcorn) ceiling
o Roofing felts and shingles
o High temperature gaskets and valve packing's
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Fireproofing material – sprayed on steel
beams, columns and decking
Added to concrete or other materials to
enhance strength (i.e. siding, roofing
shingles, wallboard, pipes, asphalt, vinyl)
Acoustical plaster, textured ceilings
Insulation of pipes/equipment
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ACM – asbestos containing materials
ACBM – asbestos containing building
materials
Friable – can be reduced to powder by hand
pressure when dry
EPA and OSHA define ACM as materials that
contain more than 1% asbestos, by weight.
Asbestos content can only be determined
through analysis of bulk samples!
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Majority of people who have died from
asbestos exposure were asbestos workers,
exposed to high concentrations each day with
little or no protection.
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Asbestosis
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Lung Cancer
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Pleural Mesothelioma
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Scarring of lung tissue
Macrophages
Clear dose-response relationship
Shortness of breath
Latency period of 15 – 30 years
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Entrances to
mechanical rooms
Entrances to
regulated
abatement areas
Entrances to crawl
spaces
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“Occupational Exposure” – exposure at or
above 0.1 fibers per cubic centimeter (f/cc)
Maintenance, repair, renovation, demolitions
that disturb ACM
Fiber release from
o Fallout (old/deteriorated ACM)
o Contact (striking, cutting, drilling, air erosion)
o Reentrainment (sweeping, dusting, unfiltered
vacuuming of settled dust)
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Damage and deterioration
o Avoid touching or disturbing ACM on ceilings,
pipes, boilers
o Do not drill, sand or scrape ACM
o Do not attempt to clean friable ACM
o Cleanup only by HEPA vac and wet methods
o Do not go above ceiling grid in PSC, Law Center, or
Capstone
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Applied in a friable state (fireproofing, acoustical
insulation)
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Physical disturbance
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Contact with asbestos ceiling
Damaged ceiling tile when removing
Air erosion
Delamination
Water leaks from ceiling causes ceiling asbestos
coating to pull away (delaminate) from base
material.
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Floor care
o Do not sand or scrape asbestos flooring
o Strip only with wet methods at speeds < 300 rpm.
o Do not dust, dry sweep or vacuum dirt/debris
where there is damaged ACM
o Jones PSC – wet wiping and HEPA vacs only for
routine cleaning
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Be familiar with health hazards of asbestos
Be aware that some areas can contain ACM
Report evidence of disturbance or damage to
Work Management @ 7-4217.
Report improper actions which could damage
ACM
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Due to recent soil sampling, all crawl spaces
and mechanical rooms with dirt floors are
being treated as contaminated
Entry will be restricted to asbestos certified
employees until poly is applied in the space
Asbestos signs will be posted – DO NOT
ENTER if you see this sign
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DO NOT ENTER
SOIL IS CONTAMINATED
WITH ASBESTOS
CONTAINING MATERIAL
IF ACCESS TO THIS SPACE IS
REQUIRED, CALL FACILITY
SERVICES @ 7-4217
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