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HS&E MAP practice question: Construction dust and silica (1 of 4)

B. Occupational health, wellbeing and welfare A free question from our original HS&E MAP practice exam. Try it, then open the answer to see why each option is right or wrong.

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Your team will cut a lot of concrete blocks with a cut-off saw.

Which control should you plan first?

Choose one answer.

  1. A. Cutting the blocks faster to get it over with
  2. B. Water suppression or on-tool extraction
  3. C. Dust masks only, with no other control on the saw
  4. D. Sweeping up the dust at the end of each day
Show the answer and explanation

Answer: B

  • A. Wrong: Wrong. Speed doesn't reduce the dust.
  • B. Right: Right. HSE says control dust at source, for example with water suppression or on-tool extraction. RPE is usually needed as well.
  • C. Wrong: Wrong. RPE should back up controls at source, not replace them.
  • D. Wrong: Wrong. Dry sweeping raises dust. And it doesn't stop exposure during cutting.

Explanation

Control dust at source with water or on-tool extraction, and back it up with suitable, fit-tested RPE.

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