The Pressure System Safety Regulations 2000
The Pressure Systems Safety Regulations 2000 came into force on the 21st February
2000, and revoked, re-enacted and amended the Pressure Systems and Transportable
Gas Containers Regulations 1989. Designers, manufacturers, importers, suppliers,
users and owners of pressure systems must ensure that they comply with the Regulations.
The Regulations govern the way pressure systems must be managed.
A pressure system is defined by Regulation 2 as:-
- a system comprising one or more pressure vessels of rigid construction, any associated
pipework and protective devices;
- the pipework with its protective devices to which a transportable pressure receptacle
(gas cylinder) is connected, but not including the transportable pressure receptacle;
- a pipeline and its protective devices;
which contains or is liable to contain steam or any relevant fluid at a pressure
greater than 0.5 bar above atmospheric.
Written Scheme of Examination
No pressure system to be used at work should be operated unless there is a Written
Scheme for the periodic examination of the following system parts:
- protective devices and pressure vessels;
- pipework parts and pipelines in which a defect may give rise to danger.
The Written Scheme of Examination must state the nature and frequency of the examinations,
specify any extra measures necessary to prepare the system for safe examination
and, where appropriate, must provide for an examination to be carried out before
the system is first used.
The Written Scheme should be drawn up by a 'competent person', or if drawn up by
someone other than a competent person, certified as suitable by a 'competent person'.
The examinations specified in the Written Scheme need to be carried out at the required
intervals. These must include both thorough examinations with the plant stripped
down and working examinations to test the protective devices and controls.
Some types of plant are exempt from all regulationse.g. small refigeration
systems under 25kW total combined input power. Others are exempt from some regulations
but must comply with others. e.g. where all the pressure vessels in a system are
individually less than 250 bar litres (pressure in bar x volume in litres) there
is no need for a Written Scheme or periodic examinations by a 'competent person'.
However, there is a requirement to maintain and inspect.