Asbestos Contractor-Supervisor
Training Exam Questions and Answers
Chrysotile - Answer -The only asbestos mineral found in the serpentine group and the
most common in the USA at 90-95%. "White Asbestos"
Amosite - Answer -Second most likely found asbestos. "Brown Asbestos" 5-10%
Crocidolite - Answer -"Blue Asbestos" 1-5%
Actinolite - Answer -Can be in vermiculite (often associated with Tremolite) no current
production.
Tremolite - Answer -Can be in Vermiculite. Some current production in India.
Anthophylite - Answer -Rare. No current production.
Serpentine - Answer -Long-wavy structure
Amphibole - Answer -Short; rigid structure; most hazardous
Friable ACM - Answer -can be crumbled, pulverized, or reduced to powder by hand. >
1% ACM
Non-friable ACM - Answer -cannot be pulverized by hand. > 1% ACM
Three categories of ACM in buildings: (according to EPA) - Answer -Surfacing Materials
(sprayed or troweled)
Thermal System Insulation (TSI)
Miscellaneous (ceiling tile, drywall, floor tiles)
What is the typical latency period for asbestosis? - Answer -10-20 years
What part of the lungs does asbestosis affect? - Answer -the alveoli
What is the typical latency period for Mesothelioma? - Answer -30-40 years
What part of the lungs does Mesothelioma affect? - Answer -affects the mesothermic
layer of the lungs
, What is the typical latency period for lung cancer? - Answer -20-30 years.
PACM - Answer -Presumed Asbestos Containing Material
OSHA categories: (High-> low risk) - Answer -Class I: TSI/ surfacing material ACM.
Class II: Miscellaneous.
Class III: Operation and Maintenance.
Class IV: Clean- up
NESHAP - Answer -National Emission Standards for Hazardous Air Pollutants
When must you notify NESHAP of an asbestos related job? - Answer -Any project over
160 SF/260LF of RACM
What is the Permissible Exposure Limit in the US. - Answer -PEL is required to be <0.1
f/cc.
What are the two types of fit-tests? - Answer -Qualitative: Less comprehensive. With
irritants.
Quantitative: More comprehensive. With pressurization levels.
How many layers of polyethylene must line the walls, ceilings, and floors? - Answer -2
layers of 6 mil.
What must be done to the HVAC during an asbestos abatement project? - Answer -1)
Turned off
2) Sealed
3) Control panel sealed, labeled and locked
NESHAP classifications are: - Answer -Demolition- Removing 1+ load-bearing member
Renovation- Altering facility w/o removing 1 load- bearing member
Category I NF- "resilient flooring, asphalt roofing, gaskets, or packings."
Category II NF- any non-friable not ""
RACM- basically any currently or will become friable material.
RACM - Answer -basically any currently or will become friable material.
What are the four broad categories of respirators? - Answer -1) Air-purifying
2) Supplied-air
3) Self-contained breathing apparatus (SCBA)
4) Combination
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