What a Risk Based Testing Programme Should Cover

A risk based testing programme is not a way to do less electrical safety work. It is a way to direct inspection and testing where people, premises and appliances face the greatest likelihood of harm. For a duty-holder, that means moving beyond the familiar annual sticker round and being able to show why each appliance is checked when it is.

The legal duty is to maintain electrical equipment so that it does not cause danger. Portable Appliance Testing, commonly called PAT testing, is one useful part of that control, but a pass label alone cannot prove an appliance is safe in its working environment. A charger may test satisfactorily yet be overheating in use. A kettle may be electrically sound but subject to a manufacturer recall. A heavily used extension lead in a workshop deserves a very different regime from a double-insulated desk lamp in a locked office.

Why fixed annual PAT testing can miss the point

A fixed annual test date is simple to administer, which is why many organisations have adopted it. It can be appropriate for some higher-use or higher-risk equipment. However, treating every item identically can create two problems: low-risk assets are tested more often than necessary, while the real causes of electrical incidents receive too little attention.

Risk comes from the appliance, its condition, how it is used and who can access it. A power tool used daily on a construction-related task, a hairdryer in guest accommodation, a staff-room microwave and a laptop charger used at a desk all have different exposure profiles. Their inspection frequency should reflect that reality.

This does not mean leaving items untested indefinitely. It means documenting sensible intervals, carrying out user checks and formal visual inspections between electrical tests, and reviewing the plan when circumstances change. A programme should be able to withstand scrutiny after an incident, an insurer query or a health and safety inspection.

Building a risk based testing programme

The starting point is a complete, accurate asset register. Every relevant portable or movable electrical item should have an identifiable record, normally linked to an asset label. The register should state what the appliance is, where it is located, who owns it where relevant, its class, test history, observations and next action date.

At Electrotech Services, each tested item can be registered in PatGuard3 asset-management software, giving duty-holders a searchable record rather than a pile of certificates that cannot be used operationally. This is particularly valuable where equipment moves between rooms, sites, rented accommodation or departments.

Assess the environment, not just the appliance

The same appliance can present a different level of risk in a different setting. A printer in a clean, supervised office is generally exposed to less damage than one in a busy retail stockroom. A portable fan in a care setting may be accessible to vulnerable people. Equipment in kitchens, workshops, schools and holiday lets is more likely to be handled by multiple users, moved frequently or exposed to heat, moisture and impact.

Consider the type of user as well. Trained staff who use a single item every day may spot a damaged plug quickly. Visitors, pupils, guests or temporary staff may not recognise a split cable, overloaded adaptor or counterfeit charger. Where user knowledge is limited, formal controls need to be stronger.

Set intervals that can be justified

There is no single legal PAT testing interval for every workplace appliance. Suitable intervals depend on the findings of the risk assessment and inspection history. New equipment may not need an immediate electrical test if it has been supplied from a reputable source, is visibly sound and is correctly recorded. Second-hand, donated or privately owned equipment should receive closer attention before being introduced into use.

A sensible programme separates routine user checks, formal visual inspections and combined inspection and testing. Visual inspection finds a high proportion of defects, including cracked plugs, damaged flexes, loose sockets, exposed conductors and signs of heat. Electrical testing adds evidence about protective conductors, insulation and other faults that cannot be seen.

Intervals should shorten where equipment is heavily used, frequently moved, hired out, used outdoors or exposed to harsher conditions. They may be longer for low-use, double-insulated equipment in a controlled office. The decision matters less than the evidence behind it: record the reasoning, review it, and change it when test failures or operating conditions indicate that the original interval is no longer suitable.

Hazards a pass label will not always reveal

A thorough inspection looks beyond the instrument reading. Electrical safety failures often begin with the product, the way it is connected, or the way it is being used. Four areas deserve particular attention:

• Manufacturer fire and electric-shock recalls, especially for chargers, white goods and heating products.

• Counterfeit or lookalike products, which may carry misleading markings but lack safe internal construction.

• Which? ‘Do Not Buy’ products and known unsafe adaptors, extension leads or travel plugs.

• Overheating, poor ventilation, overloaded socket outlets and improvised connections that create danger during normal use.

These checks are not an optional extra when evidence of a known safety issue exists. An appliance can appear presentable and produce acceptable readings while still posing a foreseeable fire or shock risk. Where a concern is identified, the correct action may be removal from service, replacement, repair by a competent person, improved positioning or clearer staff instruction.

Thermal imaging can also help where heat is suspected but not visible during a short inspection. Excess heat around plugs, leads, chargers or connections should never be dismissed as a cosmetic issue. It can indicate resistance, overload or failing components, all of which require investigation before the appliance remains in service.

Make user checks part of the control

Duty-holders cannot personally inspect every lead before it is plugged in. Staff and regular users are the first line of defence, provided they know what to look for and have a simple route to report faults.

A practical user check takes seconds. Is the cable damaged? Is the plug cracked, loose or hot? Are there signs of scorching, unusual noise, smell or intermittent operation? Is the appliance being used with the correct adaptor and in a suitable location? If the answer raises doubt, the item should be unplugged where safe to do so, labelled or segregated to prevent use, and reported.

Training should be proportionate. An office team may need a short briefing on chargers, multiway adaptors and reporting arrangements. A workshop, school or care environment may need more detailed instruction and nominated staff responsible for formal visual inspections. The point is not to turn employees into electricians. It is to prevent an obvious defect remaining in service until the next scheduled visit.

Reporting that gives you control

A useful test report should allow a manager to answer straightforward questions quickly: What assets do we have? Which items failed? Where are they? What action has been taken? When is each item due for review? A certificate without this operational detail is weak evidence and limited help on a busy site.

Reports should distinguish between items that passed, failed, were not available, or require a non-electrical safety action. Failed assets need a clear status, not vague wording. If an extension lead has been removed from use because its plug is damaged, the record should show that fact and the recommended remedy. If a recalled appliance has been identified, the report should state the action needed to prevent it returning to service.

For multi-site organisations, managed premises and holiday accommodation, accurate location data is especially important. It prevents appliances disappearing from the register and gives a defensible audit trail when sites, tenants or staff change.

Review after change, not only at renewal

A programme should be reviewed whenever equipment, premises or work practices change. New machinery, a refurbishment, a move to hot-desking, a change in occupancy, recurring cable damage or a rise in failed chargers are all reasons to reassess risk. The annual renewal date is a useful diary prompt, but it should not be the only trigger for action.

The strongest electrical safety arrangements are visible in everyday behaviour: damaged equipment is reported, unsafe adaptors are removed, records are current and managers know exactly what needs attention. That is the practical value of a risk based testing programme - not more labels, but clearer decisions that keep people safe and keep premises running.