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HS&E TUNN practice question: Dust, noise and vibration (1 of 7)

E. Specialist: Tunnelling A free question from our original HS&E TUNN practice exam. Try it, then open the answer to see why each option is right or wrong.

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A tunnel is being driven through sandstone and lined with concrete.

Why is the dust a serious health risk?

Choose one answer.

  1. A. It is only a risk on hot days
  2. B. It isn't a risk underground
  3. C. It contains silica, which harms lungs
  4. D. It makes the tunnel dirty
Show the answer and explanation

Answer: C

  • A. Wrong: Wrong. Silica dust is a risk whatever the weather.
  • B. Wrong: Wrong. Tunnelling is a higher-risk task.
  • C. Right: Right. HSE says silica is found in most rocks, sand and clay and in products such as concrete, and HSE lists tunnelling as a task with dust exposure.
  • D. Wrong: Wrong. The danger is to the lungs.

Explanation

Rock, sand, clay and concrete contain silica. Tunnelling creates silica dust that can damage your lungs.

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