Laboratory Safety: Emergency Stations - Chapter 4
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Questions and Answers

What is the primary purpose of eyewashes and safety showers in a laboratory?

  • To protect employees from injury in case of contact with hazardous chemicals (correct)
  • To provide water for laboratory experiments
  • To wash hands after handling chemicals
  • To clean laboratory equipment

    • What should you do if your clothing catches on fire in a laboratory?

  • Try to find a fire extinguisher
  • Use a nearby laboratory instrument to put out the flames
  • Use the SDR technique (STOP, DROP and ROLL) on the ground (correct)
  • Run down the hallway to find a safety shower

    • What is the correct procedure if a coworker's clothing catches on fire and they run down the hallway in panic?

  • Try to reason with them and calm them down
  • Call the fire department immediately
  • Tackle them and extinguish their clothing (correct)
  • Let them find the nearest safety shower

    • What is the function of the handle on the eyewash station?

    <p>To activate the eyewash</p> Signup and view all the answers

    Why is it important to only use the safety shower in emergencies?

    <p>Because it can cause a flood that needs to be cleaned up</p> Signup and view all the answers

    What is the most common serious hazard that you could face in a typical chemistry laboratory?

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

    What is the fourth element added to the 'fire triangle' to make a 'fire tetrahedron'?

    <p>Chemical reaction</p> Signup and view all the answers

    What is the primary principle of fire safety?

    <p>Keeping fuel sources and ignition sources separate</p> Signup and view all the answers

    What type of fire is caused by combustible materials such as wood, paper, and cloth?

    <p>Class A fire</p> Signup and view all the answers

    What is the purpose of a fire extinguisher's discharge lever?

    <p>To release the extinguishing agent</p> Signup and view all the answers

    What is the main difference between an APW extinguisher and a typical fire extinguisher?

    <p>APW extinguishers are pressurized with air and filled with water</p> Signup and view all the answers

    What happens when any of the four elements of the fire tetrahedron are removed?

    <p>The fire is extinguished</p> Signup and view all the answers

    What is the primary function of a laboratory fume hood?

    <p>To contain and remove hazardous vapors, dusts, and gases from the laboratory</p> Signup and view all the answers

    What is the purpose of the sash in a fume hood?

    <p>To contain aerosols and prevent injury from splashes or fires</p> Signup and view all the answers

    When conducting an experiment with reactive chemicals, what should you do with the sash?

    <p>Keep the sash as low as possible to minimize exposure</p> Signup and view all the answers

    What is the minimum distance from the opening of the fume hood that you should maintain while working?

    <p>15 cm</p> Signup and view all the answers

    What should you do with electrical devices when using a fume hood?

    <p>Connect them to a power strip outside the fume hood</p> Signup and view all the answers

    What should you do when leaving an experiment unattended in a fume hood?

    <p>Fill out the overnight/unattended experiment form and post it on the sash</p> Signup and view all the answers

    What is the primary purpose of the fire extinguisher in the chemistry lab?

    <p>To put out small fires that we might encounter in the lab</p> Signup and view all the answers

    When should you not fight a fire?

    <p>When you are unsure of what is burning</p> Signup and view all the answers

    What is the correct position to stand in when using a fire extinguisher?

    <p>Positioning yourself with an exit or means of escape at your back</p> Signup and view all the answers

    What is a common mistake when using a fire extinguisher?

    <p>Standing against the air current</p> Signup and view all the answers

    What should you do when you discover a fire?

    <p>Sound the alarm and evacuate the building</p> Signup and view all the answers

    What should you do if you are unable to put out a fire with a fire extinguisher?

    <p>Leave the building immediately</p> Signup and view all the answers

    What is the purpose of the sash in a fume hood?

    <p>To ensure proper airflow and protection during an experiment</p> Signup and view all the answers

    What should you do if the alarm goes off in the fume hood?

    <p>Reposition the sash and sliding panels to the correct positions and then press the 'mute' button</p> Signup and view all the answers

    How far should equipment and chemicals be set back from the front of the fume hood?

    <p>At least 6 inches</p> Signup and view all the answers

    What is the primary reason you should not lean in and put your head in the fume hood?

    <p>It is poor lab practice and can be worse than doing the experiment without a hood</p> Signup and view all the answers

    What should you do with liquid reagent containers in the fume hood?

    <p>Keep them in trays to catch all spills and drips</p> Signup and view all the answers

    What should you avoid doing in the fume hood?

    <p>All of the above</p> Signup and view all the answers

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