ASI Flashcards
VAT
Vinyl Asbestos Floor Tile - Non-friable
Friable
Crushed with hand pressure while dry
Example: Sprayed on ceiling insulations
TSI
Thermal System Insulation
SM
Surfacing Material - Sprayed on or troweled on
Mastic
Non-surfacing non TSI
PCM
cheaper. light waves. lengths of fibers
TEM
Electron, Asbestos Fibers
Bulk Sample
Trained asbestos inspector takes a sample
PLM
Polarized Light Microscope, used on bulk samples
Asbestos isn’t in?
Glass, fiberglass, metal, natural wood
Chrysotile
Fluffy, off white, hydrophilic, 95% of asbestos, used in fire suits. S shaped
Amosite
Hydrophobic, brown, Short rigid fibers
Amended water
Has surfectant
PACM
Presumed Asbestos Containing Material. MNOSHA says all TSI and sprayed or troweled SM in buildings before 1980 is PACM
Dose related
The more asbestos you breath the more you are likely to get sick
Diseases
Asbestosis, lung cancer, digestive system cancers, mesothelioma
Latency period
gap between the time you breathe asbestos and the time you start to feel sick
Asbestosis
Scarring of the lungs
Mesothelioma
Only caused by asbestos. Marker disease. Not dose related
Synergistic effect
The risk from smoking times the risk from asbestos exposure
Medical Surveillance
Medical exam for asbestos work
Baseline exam
must have before you start work
How often are medical exams required
once a year
When must workers have medical evaluations
Required whenever worker is issued a negative-pressure respirator
When are medical exams required
whenever work is at or above the 8 hour TWA limit or the Excursion limit for more than 30 days in a year
What is the 8 hour TWA
0.1 fibers per cubic centimeter. means that 0.1 f/cc is the highest average number of fibers in the air which OSHA law allows a worker to be exposed to over an 8 hour time period.
What is the excursion limit
1.0 fiber per cubic centimeter in 30 minutes. Protects from a large amount of exposure in a short period of time.
How many parts are there to a yearly asbestos medical exams?
3.Questionnaire, Pulmonary Function Test, General Exam. Could include but not required: chest x-ray, EKG
What does the first yearly exam establish
a baseline
Medical Records
Employer must give you a copy within 30 days, must keep records for 30 years after you leave the job
What is a respirator
A mask that filters the air in the room or supplies clean air from outside the room
List the respirators
R100 - resistant to oil
N100 - Not resistant to oil
P100 - oil proof
Magenta filter - stacked
What are the 4 things that you need to know to choose a respirator
The amount of asbestos in the air
The Permissible Excursion Limit
The Assigned Protection Factor
The Maximum Use Concentration
what is PEL
Permissible excursion limit: the amount of asbestos in the air that OSHA allows you to be exposed to. There are 2: 8 hour TWA and the Excursion Limit (EL)
What is APF
assigned protection factor: the degree of protection a respirator
MUC
maximum use concentration - the largest amount of asbestos in the air of the work place that a respirator is good for
What is the formula for MUC
Maximum Use Concentration = TWA x Assigned Protection Factor
Respirator below 1 fiber/cc
1/2 mask
Respirator above 1 fiber/cc
need one with a higher APF
1/2 mask APF
APF 10. If there are 10 f/cc in the air, there is 1 f/cc in the mask
Full face air purifying or PAPR with half mask APF
APF 50.
PAPR continuous flow or pressure demand supplied air with full face
APF 1000
what is CL
Clearance level: when the area is clean 0.01 or 1/100 f/cc
What is a negative pressure respirator
When you breathe in it makes a suction
Respirator bill of rights
Must assign one person to be in charge of the respirator protection program
Must have written procedures for choosing and using respirators
Employer must check the whole respiratory protection program regularly
Employer must provide medical evals
Must have you trained about respirators
Must provide NIOSH approved respirators
What are the control methods
Encapsulation
Enclosure
Removal
Repair
O&M
AHERA
regulates all asbestos response control methods in public or private, elementary or secondary schools. K-12
MNOSHA
regulates all worker exposure to asbestos
Class I Asbestos Work
Any work to do with the removal of asbestos containing TSI and sprayed or troweled on SM
Class II Asbestos Work
Any work to do with the removal of asbestos material which is NOT TSI or SM. Floor tiles, roofing, shingles, siding, etc
Class III
Repair and maintenance operations, includes encapsulation
MPCA
MN Pollution Control Agency, regulates the removal, transportation, and disposal of asbestos when the amount of RACM to be removed is at least 260 linear feet on pipes, 160 sq feet on other facility components, or if the linear or square footage cannot be measured, 35 cubic feet
RACM
is greater than 1%, friable, non-friable which has become friable, non-friable made friable through sanding, grinding, etc. non-friable becomes friable through demo
Facility
Can be institutional, commercial, industrial, can be residential with 4 or more dwellings
Roofing membranes
5580 sq feet, equivalent to 160 sq. feet