» AM2: Section A1 – Safe Isolation and Risk Assessment

Maximum Time Allowed: 45 Minutes

You will be allowed a minimum of 10 minutes to read this section and prepare for assessment.

To demonstrate your occupational competence, you’ll carry out the correct sequence for safe isolation of a distribution board to allow you to safely complete an installation.

This section will be fully observed by the Centre Assessor. This is the only way that they can see what you are doing. It can seem intimidating at first, so try and practice with a colleague watching you carry out some tasks on-site.

Safe Isolation Procedure

This is very important as if this is not done correctly on site it could result in someone getting an electric shock and, in the worst-case, death.

  1. Identify your point of isolation
  2. Inform the customer that you will be isolating the supply.
  3. Operate the isolator and lock off and fit warning notice
  4. Select approved test equipment and prove that it is working.
  5. Test on outgoing side of isolator all combinations:
    • L1 and L2
    • L1 and L3
    • L1 and Neutral
    • L1 and Earth
    • L2 and L3
    • L2 and Neutral
    • L2 and Earth
    • L3 and Neutral
    • L3 and Earth
    • Neutral and Earth
  1. Re-prove your test equipment is working. 

Risk Assessment

This is a careful examination of the risks associated with both working practices and candidate and centre staff activities.

  • A hazard is anything that may cause harm.
  • A risk is a chance, great or small, that someone will be harmed by a hazard.

The aim is to make sure that no one becomes ill or gets hurt at the facility. There are three steps to achieve this:

1. Identify the Hazards

Look at what may cause harm to candidates, centre staff, or other people, because of a work activity.

2. Decide Who Might be Harmed and How

Look at who may be affected by the work activity, how they may be affected; this may include other candidates and centre staff.

3. Evaluate the Risks and Decide on Precautions

If you find a hazard, there may be a risk to other people; you need to decide what steps must be taken to eliminate or reduce those risks as far as is reasonably practical. Bear in mind:

  • What needs to be done depends on whether the hazard is low risk or high risk.
  • You can determine this by looking at what type of injury may occur and how often it may happen.
  • It may be possible to remove the hazard altogether or to take steps to reduce this risk to an acceptable level.
  • If there is no risk present, then you do not need to take any action.
  • Record ‘No action required’ on the Risk Assessment document.

You also need to carry out a review of safe working practices and undertake a risk assessment in accordance with organisational requirements and procedures prior to commencing the Composite Installation. Record your findings on the relevant documentation.

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