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HS&E Operatives practice question: Demolition and dismantling (5 of 7)

D. High risk activities A free question from our original HS&E Operatives practice exam. Try it, then open the answer to see why each option is right or wrong.

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Two demolition jobs on the same street use different methods: one by hand and one with a high-reach machine.

What decides the size of each exclusion zone?

Choose one answer.

  1. A. It is always exactly 10 metres
  2. B. How many workers are on site
  3. C. Whether there is a scaffold around the building
  4. D. The demolition method being used
Show the answer and explanation

Answer: D

  • A. Wrong: Wrong. There is no fixed size. It depends on the method.
  • B. Wrong: Wrong. The zone depends on how far debris could travel, which depends on the method.
  • C. Wrong: Wrong. HSE says a scaffold does not allow the exclusion zone to be made smaller.
  • D. Right: Right. HSE says the size of exclusion and debris zones depends on the demolition technique being used.

Explanation

Exclusion zones are sized for the demolition method, so debris from a planned or accidental collapse stays inside them.

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