Asbestos Flashcards
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Questions and Answers

What is the most common asbestos mineral?

  • Chrysolite
  • Crocidolite
  • Asbestine
  • Chrysotil (correct)

    • What is the most hazardous common asbestos mineral?

  • Amosite
  • Chrysolite
  • Chrysotil
  • Crocidolite (correct)

    • What is the least hazardous asbestos mineral?

    Chrysolite

    Asbestos readily dissolves in water.

    <p>False</p> Signup and view all the answers

    Asbestos remains strong even when wrapped in a hot environment.

    <p>True</p> Signup and view all the answers

    Asbestos improves the properties of mastics and plasters.

    <p>True</p> Signup and view all the answers

    Asbestos breaks down through biological agents.

    <p>True</p> Signup and view all the answers

    Asbestos conducts electricity.

    <p>False</p> Signup and view all the answers

    Asbestos has crystalline properties.

    <p>True</p> Signup and view all the answers

    What are the three routes of exposure for hazardous materials?

    <p>Inhalation, ingestion, and skin exposure</p> Signup and view all the answers

    What is the primary way asbestos enters the body?

    <p>Inhalation</p> Signup and view all the answers

    Asbestos is regulated because it is known as a what?

    <p>Carcinogen</p> Signup and view all the answers

    What are the symptoms of mesothelioma and its latency period?

    <p>Severe chest pain, 20 to 40 years, fatal within 18 months</p> Signup and view all the answers

    What are the symptoms of lung cancer, latency period, and prognosis?

    <p>Persistent cough, coughing blood, 20 years, usually fatal</p> Signup and view all the answers

    What are the symptoms, latency period, and prognosis of asbestosis?

    <p>Scarring, shortness of breath, 10 to 20 years, debilitating</p> Signup and view all the answers

    What lung disease's likelihood is not clearly related to total exposure?

    <p>Mesothelioma</p> Signup and view all the answers

    What lung disease is not cancer?

    <p>Asbestosis</p> Signup and view all the answers

    On every asbestos construction project, the employer must designate a what?

    <p>Competent person</p> Signup and view all the answers

    What three things must a competent person (CP) have?

    <p>Training, responsibility, authority</p> Signup and view all the answers

    What does PEL stand for?

    <p>Permissible Exposure Limit</p> Signup and view all the answers

    What does TWA stand for?

    <p>Time Weighted Average</p> Signup and view all the answers

    What is the PEL-TWA excursion limit?

    <p>1 f/cc per 8 hours</p> Signup and view all the answers

    What is the PEL excursion limit?

    <p>1.0 f/cc per 30 min</p> Signup and view all the answers

    Air monitoring samples are collected with what?

    <p>Personal monitoring pump and cassette</p> Signup and view all the answers

    The monitoring device must be placed facing what?

    <p>Down, within 12 inches of breathing zone</p> Signup and view all the answers

    What is a Negative Exposure Assessment (NEA)?

    <p>Demonstration by the employer that PEL will not be exceeded for the project</p> Signup and view all the answers

    What does PACM stand for?

    <p>Presumed Asbestos Containing Material</p> Signup and view all the answers

    PACM includes what three types?

    <p>Surfacing, resilient flooring, thermal system insulation (TSI)</p> Signup and view all the answers

    Asbestos flooring installed after what year is not PACM?

    <p>1980</p> Signup and view all the answers

    What are five means of confining and minimizing fiber dispersal?

    <p>Don't make it friable, keep it contained, keep it wet, HEPA filters, control airflow</p> Signup and view all the answers

    What is an example of Class 1 asbestos work?

    <p>Removal of popcorn ceiling (surfacing)</p> Signup and view all the answers

    What is an example of Class II asbestos work?

    <p>Removal of drywall</p> Signup and view all the answers

    What is an example of Class III asbestos work?

    <p>Repairing water pipes (disturbing)</p> Signup and view all the answers

    What is an example of Class IV asbestos work?

    <p>Polishing floors</p> Signup and view all the answers

    What class of asbestos work is non-disturbed?

    <p>Class IV</p> Signup and view all the answers

    What class of asbestos work involves surfacing?

    <p>Class I</p> Signup and view all the answers

    What class of asbestos work involves disturbance?

    <p>Class III</p> Signup and view all the answers

    What class of asbestos work can change by the material's condition and change to what?

    <p>Class IV can change to Class III if disturbed</p> Signup and view all the answers

    HEPA filters are what percentage effective?

    <p>99.97% down to 0.3 microns</p> Signup and view all the answers

    For Class III work, respirators must be worn when?

    <p>TSI or surfacing, not done with wet method, no NEA</p> Signup and view all the answers

    What are the two types of user seal checks?

    <p>Positive and negative</p> Signup and view all the answers

    User seal checks must be performed when?

    <p>Every time</p> Signup and view all the answers

    Which type of respirator requires fit testing?

    <p>Tight fitting NPAPR</p> Signup and view all the answers

    How often is fit testing required?

    <p>Annually or after facial change</p> Signup and view all the answers

    Do you have to wear the respirator you fit tested with?

    <p>True</p> Signup and view all the answers

    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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    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.

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