PA Asbestos Worker Licensing Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A | Instant Download Pdf
1. Which federal agency is primarily responsible for regulating asbestos
in the workplace under OSHA standards?
a) EPA
b) OSHA
c) NIOSH
d) HUD
OSHA regulates asbestos exposure in the workplace through
permissible exposure limits (PELs) and safety standards. EPA regulates
environmental aspects, but OSHA covers workers.
2. What is the permissible exposure limit (PEL) for asbestos fibers as
defined by OSHA?
a) 0.2 fibers/cc (8-hour TWA)
, b) 0.5 fibers/cc (8-hour TWA)
c) 0.1 fibers/cc (8-hour TWA)
d) 1.0 fibers/cc (8-hour TWA)
OSHA sets the PEL at 0.1 fibers per cubic centimeter of air averaged
over an 8-hour work shift.
3. Asbestos fibers are considered hazardous primarily because they can
cause:
a) Skin rashes
b) Respiratory diseases
c) Bone cancer
d) Vision problems
Asbestos fibers damage lung tissue and can cause asbestosis, lung
cancer, and mesothelioma.
4. Which type of asbestos is most commonly used in building materials in
the United States?
a) Crocidolite
b) Amosite
c) Tremolite
d) Chrysotile
Chrysotile (white asbestos) accounts for about 90–95% of asbestos
used in buildings.
5. Which of the following diseases is exclusively associated with asbestos
exposure?
, a) Asthma
b) Emphysema
c) Mesothelioma
d) Tuberculosis
Mesothelioma is a rare cancer of the pleura or peritoneum caused
almost exclusively by asbestos exposure.
6. Which of the following is NOT considered an asbestos-containing
material (ACM)?
a) Pipe insulation
b) Floor tiles
c) Popcorn ceiling
d) Drywall without joint compound
Drywall itself doesn’t contain asbestos, but joint compounds and
finishes often did.
7. How many hours of initial training are required for asbestos
abatement workers under EPA AHERA regulations?
a) 16 hours
b) 24 hours
c) 32 hours
d) 40 hours
EPA requires 32 hours of accredited training for asbestos workers.
8. How often must asbestos abatement workers receive refresher
training?
, a) Every 2 years
b) Every 5 years
c) Annually
d) Only once
EPA and OSHA require annual refresher training for asbestos workers.
9. What is the main purpose of a negative air pressure enclosure during
asbestos abatement?
a) Keep workers cool
b) Prevent asbestos fibers from escaping the work area
c) Increase productivity
d) Reduce noise levels
Negative pressure keeps contaminants inside the work area by pulling
air inward.
10. What type of respirator is typically required for asbestos
abatement activities?
a) Surgical mask
b) Half-mask or full-facepiece respirator with HEPA filters
c) Dust mask
d) Gas mask only
OSHA requires respirators equipped with HEPA filters for asbestos
abatement.
11. Which color HEPA filter cartridges are designated for asbestos
abatement work?
Practice Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A | Instant Download Pdf
1. Which federal agency is primarily responsible for regulating asbestos
in the workplace under OSHA standards?
a) EPA
b) OSHA
c) NIOSH
d) HUD
OSHA regulates asbestos exposure in the workplace through
permissible exposure limits (PELs) and safety standards. EPA regulates
environmental aspects, but OSHA covers workers.
2. What is the permissible exposure limit (PEL) for asbestos fibers as
defined by OSHA?
a) 0.2 fibers/cc (8-hour TWA)
, b) 0.5 fibers/cc (8-hour TWA)
c) 0.1 fibers/cc (8-hour TWA)
d) 1.0 fibers/cc (8-hour TWA)
OSHA sets the PEL at 0.1 fibers per cubic centimeter of air averaged
over an 8-hour work shift.
3. Asbestos fibers are considered hazardous primarily because they can
cause:
a) Skin rashes
b) Respiratory diseases
c) Bone cancer
d) Vision problems
Asbestos fibers damage lung tissue and can cause asbestosis, lung
cancer, and mesothelioma.
4. Which type of asbestos is most commonly used in building materials in
the United States?
a) Crocidolite
b) Amosite
c) Tremolite
d) Chrysotile
Chrysotile (white asbestos) accounts for about 90–95% of asbestos
used in buildings.
5. Which of the following diseases is exclusively associated with asbestos
exposure?
, a) Asthma
b) Emphysema
c) Mesothelioma
d) Tuberculosis
Mesothelioma is a rare cancer of the pleura or peritoneum caused
almost exclusively by asbestos exposure.
6. Which of the following is NOT considered an asbestos-containing
material (ACM)?
a) Pipe insulation
b) Floor tiles
c) Popcorn ceiling
d) Drywall without joint compound
Drywall itself doesn’t contain asbestos, but joint compounds and
finishes often did.
7. How many hours of initial training are required for asbestos
abatement workers under EPA AHERA regulations?
a) 16 hours
b) 24 hours
c) 32 hours
d) 40 hours
EPA requires 32 hours of accredited training for asbestos workers.
8. How often must asbestos abatement workers receive refresher
training?
, a) Every 2 years
b) Every 5 years
c) Annually
d) Only once
EPA and OSHA require annual refresher training for asbestos workers.
9. What is the main purpose of a negative air pressure enclosure during
asbestos abatement?
a) Keep workers cool
b) Prevent asbestos fibers from escaping the work area
c) Increase productivity
d) Reduce noise levels
Negative pressure keeps contaminants inside the work area by pulling
air inward.
10. What type of respirator is typically required for asbestos
abatement activities?
a) Surgical mask
b) Half-mask or full-facepiece respirator with HEPA filters
c) Dust mask
d) Gas mask only
OSHA requires respirators equipped with HEPA filters for asbestos
abatement.
11. Which color HEPA filter cartridges are designated for asbestos
abatement work?
