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NRSWA Revision Street Works · England
A cable avoidance tool being swept across a road surface, with service markings sprayed on the tarmac

LA — Location & Avoidance

Safe Digging Practices

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Free LA questions: Safe Digging Practices

These questions are in the practice set above. Answer them there to see the correct option and the explanation for each.

  • What precaution applies when a mechanical excavator is used near underground services?
  • Scenario: a hand-held power tool is being used to break up a hard surface above a service whose line has been marked by a survey but not yet exposed. Where practicable, how close to the marked line may the tool be used?
  • Scenario: a mechanical excavator is being used near a buried gas pipeline whose line has already been confirmed by hand digging. How close may the excavator work to the pipeline, and what reason does HSG47 give for that margin around gas pipes?
  • Scenario: a gas pipe has been exposed in a trench and needs backfilling around, and a worker also needs to climb out of the trench nearby. What must be avoided in each case?

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NRSWA Revision: Street Works is independent revision material. It is not affiliated with, endorsed by or approved by HAUC(UK), SWQR, any awarding organisation or the Department for Transport, and it does not award a qualification or a card.