All new and existing compressed air installations must conform to the Pressure Systems Safety Regulations (PSSR2000).

All pressure systems larger than 250 bar/litres must have a ‘written scheme of examination’ and a statutory inspection in accordance with the written scheme.

A written scheme of examination is a report that details safety devices and components associated with the systems pressure vessels. It also includes inspection periods for each device or component. In some cases, a schematic drawing of the whole air network is required.

Airwave Air Compressors can provide all necessary services required by the pressure systems safety Regulation

For more information about written schemes of examination please contact us to discuss

What is a written scheme of examination?

A written scheme of examination is a document containing information about selected items of plant or equipment which form a pressure system, operate under pressure and contain a ‘relevant fluid’.

The term relevant fluid is defined in the Regulations and covers compressed or liquefied gas, including air, at a pressure greater than 0.5 bar (approximately 7 psi) above atmospheric pressure; pressurised hot water above 110 °C; and steam at any pressure.

Typical contents of a written scheme of examination include:

identification of the items of plant or equipment within the system; those parts of the system which are to be examined; the nature of the examination required, including the inspection and testing to be carried out on any protective devices;

the preparatory work needed for the item to be examined safely; where appropriate, the nature of any examination needed before the system is first used; the maximum interval between examinations; the critical parts of the system which, if modified or repaired, should be examined by a competent person before the system is used again; the name of the competent person certifying the written scheme of examination; and the date of certification.