Podcast
Questions and Answers
What is the most common asbestos mineral?
What is the most common asbestos mineral?
- Chrysolite
- Crocidolite
- Asbestine
- Chrysotil (correct)
What is the most hazardous common asbestos mineral?
What is the most hazardous common asbestos mineral?
- Amosite
- Chrysolite
- Chrysotil
- Crocidolite (correct)
What is the least hazardous asbestos mineral?
What is the least hazardous asbestos mineral?
Chrysolite
Asbestos readily dissolves in water.
Asbestos readily dissolves in water.
Asbestos remains strong even when wrapped in a hot environment.
Asbestos remains strong even when wrapped in a hot environment.
Asbestos improves the properties of mastics and plasters.
Asbestos improves the properties of mastics and plasters.
Asbestos breaks down through biological agents.
Asbestos breaks down through biological agents.
Asbestos conducts electricity.
Asbestos conducts electricity.
Asbestos has crystalline properties.
Asbestos has crystalline properties.
What are the three routes of exposure for hazardous materials?
What are the three routes of exposure for hazardous materials?
What is the primary way asbestos enters the body?
What is the primary way asbestos enters the body?
Asbestos is regulated because it is known as a what?
Asbestos is regulated because it is known as a what?
What are the symptoms of mesothelioma and its latency period?
What are the symptoms of mesothelioma and its latency period?
What are the symptoms of lung cancer, latency period, and prognosis?
What are the symptoms of lung cancer, latency period, and prognosis?
What are the symptoms, latency period, and prognosis of asbestosis?
What are the symptoms, latency period, and prognosis of asbestosis?
What lung disease's likelihood is not clearly related to total exposure?
What lung disease's likelihood is not clearly related to total exposure?
What lung disease is not cancer?
What lung disease is not cancer?
On every asbestos construction project, the employer must designate a what?
On every asbestos construction project, the employer must designate a what?
What three things must a competent person (CP) have?
What three things must a competent person (CP) have?
What does PEL stand for?
What does PEL stand for?
What does TWA stand for?
What does TWA stand for?
What is the PEL-TWA excursion limit?
What is the PEL-TWA excursion limit?
What is the PEL excursion limit?
What is the PEL excursion limit?
Air monitoring samples are collected with what?
Air monitoring samples are collected with what?
The monitoring device must be placed facing what?
The monitoring device must be placed facing what?
What is a Negative Exposure Assessment (NEA)?
What is a Negative Exposure Assessment (NEA)?
What does PACM stand for?
What does PACM stand for?
PACM includes what three types?
PACM includes what three types?
Asbestos flooring installed after what year is not PACM?
Asbestos flooring installed after what year is not PACM?
What are five means of confining and minimizing fiber dispersal?
What are five means of confining and minimizing fiber dispersal?
What is an example of Class 1 asbestos work?
What is an example of Class 1 asbestos work?
What is an example of Class II asbestos work?
What is an example of Class II asbestos work?
What is an example of Class III asbestos work?
What is an example of Class III asbestos work?
What is an example of Class IV asbestos work?
What is an example of Class IV asbestos work?
What class of asbestos work is non-disturbed?
What class of asbestos work is non-disturbed?
What class of asbestos work involves surfacing?
What class of asbestos work involves surfacing?
What class of asbestos work involves disturbance?
What class of asbestos work involves disturbance?
What class of asbestos work can change by the material's condition and change to what?
What class of asbestos work can change by the material's condition and change to what?
HEPA filters are what percentage effective?
HEPA filters are what percentage effective?
For Class III work, respirators must be worn when?
For Class III work, respirators must be worn when?
What are the two types of user seal checks?
What are the two types of user seal checks?
User seal checks must be performed when?
User seal checks must be performed when?
Which type of respirator requires fit testing?
Which type of respirator requires fit testing?
How often is fit testing required?
How often is fit testing required?
Do you have to wear the respirator you fit tested with?
Do you have to wear the respirator you fit tested with?
Study Notes
Asbestos Overview
- Chrysotile is the most common asbestos mineral.
- Crocidolite is considered the most hazardous type of asbestos.
- Chrysolite is identified as the least hazardous form of asbestos.
Asbestos Properties
- Asbestos does not readily dissolve in substances.
- It remains strong even when exposed to high temperatures.
- Asbestos enhances the properties of mastics and plaster.
- Biodegradable agents can break down asbestos.
- Asbestos does not conduct electricity.
- It possesses crystalline properties.
Exposure and Health Risks
- Key exposure routes include inhalation, ingestion, and skin contact.
- The primary way asbestos enters the body is through inhalation.
- Asbestos is classified as a carcinogen, associated with serious health risks.
- Mesothelioma symptoms include severe chest pain with a latency of 20 to 40 years, often fatal within 18 months.
- Lung cancer symptoms include a persistent cough with a latency period of 20 years, commonly leading to fatal outcomes.
- Asbestosis is characterized by scarring and shortness of breath, presenting after a latency of 10 to 20 years, and is debilitating but not cancerous.
Regulatory Requirements
- Employers must designate a competent person on every asbestos construction project.
- Competent individuals must have training, responsibility, and authority related to asbestos work.
- PEL (Permissible Exposure Limit) refers to the maximum allowable concentration of asbestos.
- TWA (Time Weighted Average) assesses exposure over time.
Monitoring and Assessment
- The PEL-TWA excursion limit is set at 1 f/cc over an 8-hour workday.
- A 1.0 f/cc excursion limit is applicable for a 30-minute period.
- Air monitoring requires using personal monitoring pumps and cassettes, positioned facing down within 12 inches of the breathing zone.
- A Negative Exposure Assessment (NEA) demonstrates that the PEL will not be exceeded during a project.
Asbestos Containing Materials
- PACM stands for Presumed Asbestos Containing Material, which includes specific types like surfacing, resilient flooring, and thermal system insulation.
- Asbestos flooring installed after 1980 is not classified as PACM.
Work Classifications
- Class I work involves removing surfacing materials, such as popcorn ceilings.
- Class II work pertains to the removal of non-friable asbestos, like drywall.
- Class III work includes activities that disturb asbestos, such as repairing water pipes.
- Class IV work refers to non-disturbing tasks, like polishing floors, but can change to Class III if disturbed.
Equipment and Safety
- HEPA filters are 99.97% effective at filtering particles down to 0.3 microns.
- For Class III work, respirators must be worn if not using wet methods and if no NEA is in place.
- User seal checks for respirators must be performed every time they are used, with both positive and negative checks available.
- Tight-fitting NPAPR (powered air-purifying respirator) requires fit testing annually or after any facial changes.
Additional Considerations
- The necessity of wearing the specific respirator used during fit testing is emphasized for safety compliance.
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Description
Test your knowledge about asbestos with these flashcards. Each card provides crucial information about different asbestos minerals and their characteristics. Perfect for students or professionals looking to enhance their understanding of this important topic.
