Air Extraction and Ventilation System Design
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Questions and Answers

What is one of the reasons why air extraction and ventilation systems are often unsatisfactory?

  • Lack of attention to the effect on climate during design
  • Over-extraction of air from the breathing zone
  • Unfavorable location and inadequate maintenance (correct)
  • Inadequate volume of fresh air per person

    • What is emphasized as essential to prevent the reduction of efficiency in air extraction and ventilation systems?

  • Increased air changes
  • Higher extraction from the breathing zone
  • Regular maintenance (correct)
  • Enhanced climate control

    • How does air extraction and ventilation influence the degree of thermal comfort?

  • By limiting the number of people exposed to contaminated air
  • By increasing the chance of a draft (correct)
  • By providing insufficient air changes
  • By reducing the effect of chemical substances

    • What is one of the measures at the individual level to reduce exposure to chemical substances?

    <p>Spending as little time as possible in rooms with contaminated air</p> Signup and view all the answers

    What is the required volume of fresh air per person dependent on?

    <p>The degree to which the work is physically demanding</p> Signup and view all the answers

    What does the text suggest as a way to reduce people’s exposure to contaminated air?

    <p>Spend as little time as possible in rooms with contaminated air</p> Signup and view all the answers

    What is the advantage of carrying out activities involving chemical substances outside normal working hours?

    <p>Fewer people are exposed to the substances</p> Signup and view all the answers

    When are special masks fitted with filters recommended for use?

    <p>When measures aimed at source or exposure are not feasible</p> Signup and view all the answers

    What is the primary purpose of using personal protective equipment according to the text?

    <p>To avoid exposure to chemical substances</p> Signup and view all the answers

    Why should gloves and aprons be worn when working with liquids that can be absorbed through the skin?

    <p>To prevent skin lesions</p> Signup and view all the answers

    What is the recommended method to reduce the absorption of chemical substances through the skin?

    <p>Ensuring rapid treatment of skin lesions</p> Signup and view all the answers

    What kind of protection does wearing dust masks offer according to the text?

    <p>Protection against coarse, chemically harmless dust particles</p> Signup and view all the answers

    When is it necessary to use personal protective equipment according to the text?

    <p>When measures aimed at source or exposure are not feasible or adequate</p> Signup and view all the answers

    What is considered essential according to the text when using special masks?

    <p>Instruction in the use of masks</p> Signup and view all the answers

    What is unproven according to the text regarding the protective effect of gloves?

    <p>The protective effect of special skin creams</p> Signup and view all the answers

    What kind of protection do dust masks offer against gases according to the text?

    <p>No protection against any type of gas</p> Signup and view all the answers

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