The 3 Stage Process

User checks

Advising users of any potential danger signs results in problems being picked up before they can result in danger to its user.

An example of this could be a power cable which has been frayed or a plug which is cracked. Users should be advised not to use the appliance.

A fault should then be reported to a supervisor, typically this information can be put across in a memo or on a poster.

Formal visual inspections

The appliances is inspected during this process, in particular the plug and cable are checked for obvious signs of damage.

According to the HSE, this process, if done correctly can find more than 90% of faults and for this reason is the most important part of maintaining appliances.

Combined inspections and PAT testing

Portable appliances need to be tested at periodic intervals to measure its degree of protection to ensure that it is adequate.

At these intervals, the formal visual inspection is carried out, followed by the Pat Testing by a competent person.

Formal Inspection - Things to look for

Following is a checklist of items to look for:

• Damage to power cable sheath.
• Damage to mains plug, for example cracking to the casing, or bent pins.
• Any taped joints to the cable.
• Inadequate strain relief.
• Signs that the equipment has been subject to conditions for which it is not suitable, e.g. wet or excessively rusty.
• Damage to external casing of the equipment, or loose parts or screws.
• Evidence of overheating.

The Formal inspection should also include removal of the plug cover and checking that:

• That the correct value fuse is being used.
• That the cord grip is holding the outer part of the cable tightly.
• The Live, Neutral and earth wires are attached to the correct terminals.
• That no bare wires are visible, other than at the terminals.
• The terminal screws are tight.
• That there is no sign of internal damage, overheating or entry of liquid, dust or dirt.