Risk Assessment for Electrical Testing and Commissioning — UK

UK construction-safety guidance by the Riskora Editorial Team

Anyone planning electrical testing and commissioning on a UK site faces the same starting question: how is the work going to be controlled? More than half of fatal electrical incidents on UK sites involve work on equipment that was assumed to be isolated but was not proved dead before work began. On electrical testing and commissioning, the relevant duty is unambiguous: The Electricity at Work Regulations 1989 and BS 7671 require that testing is carried out by competent persons using calibrated instruments. A well-written Risk Assessment converts the legal duty into something workers, supervisors and clients can actually use on the day.

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Example Risk Assessment

Risk Assessment for Electrical Testing and Commissioning — UK

  • Full scope and description of testing and commissioning of newly installed or modified electrical systems
  • Site-specific hazard identification and risk ratings
  • Risk control: arc flash during live testing at distribution boards
  • Risk control: electric shock from inadvertent contact with live conductors
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When This Document Is Required

The Electricity at Work Regulations 1989 and BS 7671 require that testing is carried out by competent persons using calibrated instruments. GS38 specifies requirements for test probes and leads.

What Must Be Included

  • Full scope and description of testing and commissioning of newly installed or modified electrical systems
  • Site-specific hazard identification and risk ratings
  • Risk control: arc flash during live testing at distribution boards
  • Risk control: electric shock from inadvertent contact with live conductors
  • Risk control: incorrect test results leading to unsafe installation being energised
  • PPE and RPE requirements for all personnel
  • Emergency procedures and response arrangements
  • Competency requirements and training records
  • Communication and briefing procedures
  • Supervision and monitoring arrangements
  • Review schedule and sign-off by competent person

Common Mistakes to Avoid

  • Using a generic template without adapting it to the specific testing and commissioning of newly installed or modified electrical systems conditions
  • Not reviewing the document when site conditions change
  • Missing sign-off from a competent person before work begins
  • Failing to consider arc flash during live testing at distribution boards
  • Not addressing electric shock from inadvertent contact with live conductors
  • Not briefing all workers on the document content before work starts

Example Scenario

In the West Midlands, a project H&S lead has just won a contract that requires the same compliance pack as a tier-one main contractor — including a site-specific Risk Assessment. They walk through the guided builder, accept the suggested hazards for electrical testing and commissioning that fit, override the ones that do not, capture the project details in one pass, and send the finished document straight from Riskora to the client. The finished document explicitly addresses arc flash during live testing at distribution boards, which the principal contractor would otherwise expect to see written into the pack.

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Riskora is an assistive document preparation tool. All documents generated must be reviewed, verified, and approved by a competent person before use on site. Riskora does not replace professional safety judgment, and no output should be treated as a legal compliance guarantee.