Exam Questions and CORRECT Answers
3 uncommon types of Asbestos - CORRECT ANSWER - Anthophyllite, Tremolite, and
Actinolite
Most common varieties of Asbestos - CORRECT ANSWER - Chrysotile, amosite and
crocidolite
PLM - CORRECT ANSWER - Polarized Light Microscopy
To detect if a building material is asbestos... - CORRECT ANSWER - you take a BULK
sample and have it analyzed by PLM
A bulk sample is analyzed by what method? - CORRECT ANSWER - PLM
PLM-EPA requires you to report... - CORRECT ANSWER - percent and type of asbestos.
Asbestosis - CORRECT ANSWER - is scarring of air sacs (alyeoli in the lungs) this is not
cancer. Also called white lung disease.
Mesothelioma - CORRECT ANSWER - cancer of the lung or stomach (peritoneal) lining, rare
and deadly. Even one fiber could cause it, called the marker disease.
What are the required components of the medical exam? - CORRECT ANSWER - Required:
Medical Questionnaire, pulmonary fit test (PFT), physical exam.
Recommended: chest x ray, EKG, Sputum cytology
How often must a medical exam be done? - CORRECT ANSWER - Initially and every year
and at termination of job within 30 days.
,Two broad categories of respirators. - CORRECT ANSWER - 1. Air purifying RP
2. Air supplied RP also called atmosphere supplied.
ASHARA - CORRECT ANSWER - Asbestos School Hazard Abatement Reauthorization Act-
all public and commercial buildings must use accredited personnel.
What two methods of analysis are commonly used for AIR sample and analysis. - CORRECT
ANSWER - Transmission Electron Microscopy and Phase Contrast Microscopy
AHERA - CORRECT ANSWER - Asbestos Hazard Emergency Response Act
CFR - CORRECT ANSWER - Code of Federal Regulations
OSHA - CORRECT ANSWER - Occupational Safety and Health Administration
Asbestos is - CORRECT ANSWER - a naturally occurring mineral and it is made into many
different products. Chemical and fire retardant. A fibrous mineral.
Why do you need to know the percent of asbestos? - CORRECT ANSWER - If it's 1% or
lower it is not considered asbestos by EPA rules. OSHA considers any amount of asbestos a
possible exposure until air sampling proves otherwise.
The two major grouping of asbestos are - CORRECT ANSWER - Serpentine and Amphibole
Serpentine - CORRECT ANSWER - 95% of all asbestos is chrysotile (white)
Amphilbole has 5 types - CORRECT ANSWER - 1. Amosite
2. Crocidolite
, 3. Anthophyllite
4. Tremolite
5. Actinolite
Most amphibole is found in - CORRECT ANSWER - TSI and usually doesnt absorb water
easily
Analyzing the bulk samples is the only way to positively document the presence of asbestos. -
CORRECT ANSWER - True
Even if a lab by PLM shows a material is 1% or lower including trace then it must be tested by
Point Counting (and be 1% or lower) otherwise assume it's still asbestos. - CORRECT
ANSWER - The exception to this is if it is NAD (No Asbestos Detected). EPA regulations
state that all samples below 10% must be point counted or presumed to be asbestos.
PLM and TEM are the two most currently used methods to detect asbestos in materials. -
CORRECT ANSWER - True
Other methods to detect asbestos besides PLM are - CORRECT ANSWER - TEM-
Transmission Electron Microscopy
X-ray diffraction-old method and inaccurate
SEM- Scanning Electron Microscopy (expensive)
PCM - CORRECT ANSWER - Phase Contrast Microscopy- you collect a sample on a filter
cassette to detect asbestos in the air. Light is shifted 3 degrees. Used on job sites to determine
workers exposure.
OSHA has TWO basic limits - CORRECT ANSWER - 1. Permissible Exposure Limits (PEL)
0.1 f/cc for 8 hours or 480 minutes (a full work day)
2. Excursion Limit (EL) 1.0 f/cc for 30 minutes (one required for an 8 hour day, during highest
fiber count). This helps to make sure that workers wearing half face respirators are not at risk to
being overexposed to asbestos fibers.