Exam Questions and CORRECT Answers
Name the two classifications of asbestos fibers - CORRECT ANSWER- ✔✔Serpentine and
Amphibole
Of the six types of asbestos fibers, which are the two most common? - CORRECT
ANSWER- ✔✔Chrysotile and Amosite
Which type of asbestos is the most difficult to keep wet? - CORRECT ANSWER-
✔✔Amosite
What is asbestosis? - CORRECT ANSWER- ✔✔Scarring of the lung tissue and alveoli
What is mesothelioma? - CORRECT ANSWER- ✔✔Abnormal, uncontrolled growth (pleural
and peritoneal membranes).
What is lung cancer? - CORRECT ANSWER- ✔✔Abnormal, uncontrolled cell growth of the
lungs.
What are pleural plaques? - CORRECT ANSWER- ✔✔Smooth, white raised irregular areas
of fibrous collagen tissue that develop on the pleura and become calcified. Not considered
pre-malignant. Hyaline material.
What is a latency period? - CORRECT ANSWER- ✔✔Time between exposure and onset of
symptoms. Acute, intermediate, chronic. Asbestos latency is usually 10-20+ years.
What is the relationship between smoking and asbestos exposure? - CORRECT ANSWER-
✔✔Synergistic. It is 50-90x increased risk factor.
What does NESHAP stand for? - CORRECT ANSWER- ✔✔National Emission Standard for
Hazardous Air Pollutants.
, What is the purpose of the NESHAP regulation? - CORRECT ANSWER- ✔✔No visible
emissions
Which regulatory agency enforces NESHAP? - CORRECT ANSWER- ✔✔EPA
What does AHERA stand for? - CORRECT ANSWER- ✔✔Asbestos Hazard Emergency
Response
What is the purpose of the AHERA regulation? - CORRECT ANSWER- ✔✔Regulate
asbestos in school buildings (public and private non-profit K-12 schools)
Which regulatory agency enforces AHERA? - CORRECT ANSWER- ✔✔EPA
What does OSHA stand for? - CORRECT ANSWER- ✔✔Occupational Safety and Health
Administration
What is OSHA's purpose? - CORRECT ANSWER- ✔✔To protect the employee/worker.
What is the PEL (acronym)? - CORRECT ANSWER- ✔✔Permissible Exposure Limit
What number is associated with the excursion limit (EL)? - CORRECT ANSWER- ✔✔1.0
f/cc
What is the 8-hour TWA for PEL? - CORRECT ANSWER- ✔✔0.1 f/cc
What is the standard for asbestos clearance? - CORRECT ANSWER- ✔✔0.01 f/cc
Does OSHA have a clearance limit requirement for containments? - CORRECT ANSWER-
✔✔No, AHERA and individual states do.
Name the five asbestos control techniques. - CORRECT ANSWER- ✔✔Removal,
encapsulation, enclosure, repair, and O&M