are your pressure systems safe and compliant€¦ · pssr 2000 (pressure safety system regulation...

PSSR 2000 (Pressure Safety System Regulation 2000) – LEGAL REQUIREMENT

»  Are your pressure systems safe and compliant –  At PCS we have the experience to guide you on this legislation to ensure your pressure systems, control panels,

high pressure bottle pressure regulators and hoses are compliant, we also offer basic training covering the main requirements of the PSSR Legislation.

–  We design systems and supply components pre assembled to comply, an example can be seen below.

–  We can also guide you on if your system should be considered as a “relevant system” and thus should follow the detailed aspects of these regulations, we can also advise you on partner companies that can work with you to put detailed systems in place.

–  Below is an overview of the detailed guidance and where you can find copies of all of the latest government legislation and regulations.

Legislation & Legal Requirements

»  Pressure Equipment Regulations 1999 »  (SI 1999/2001) (PER) »  The Pressure Equipment Directive has been implemented in the UK by the Pressure

Equipment Regulations 1999 (SI 1999/2001). PER came into force on 29 November 1999 and was amended by SI 2002 No 1267 which came into force on 30 May 2002.

»  * http://www.hse.gov.uk/pressure-systems/law.htm *Source of data


»  The Regulations apply to: »  design, manufacture and conformity assessment of pressure equipment and

assemblies of pressure equipment with a maximum allowable pressure >0.5 bar »  The Regulations do not apply to: »  excluded pressure equipment and assemblies (specified in Schedule 1 to PER) »  pressure equipment and assemblies placed on the market before 29 November 1999 »  pressure equipment or assemblies placed on the market on or before 29 May 2002 if

they comply with the safety provisions in force in the UK on 29 November 1999 and do not bear a CE marking (unless required by another Community Directive or any indication of compliance with PED)


»  Definitions »  Pressure equipment – vessels, piping, safety accessories and pressure accessories. »  Where applicable, includes elements attached to pressurised parts such as flanges,

nozzles, couplings, supports, lifting lugs etc. »  Vessel - a housing designed and built to contain fluids under pressure. »  Includes its direct attachments up to the coupling point connecting it to other

equipment. A vessel may be composed of more than one chamber. »  Piping - piping components intended for the transport of fluids when connected

together for integration into a pressure system. »  Includes a pipe or system of pipes, tubing, fittings, expansion joints, hoses, or other

pressure-bearing components as appropriate. Heat exchangers consisting of pipes for the purpose of cooling or heating air are considered as piping.


»  Definitions »  Safety accessories - devices designed to protect pressure equipment against the

allowable limits being exceeded. »  Such devices include devices for direct pressure limitation, such as safety valves and

bursting discs etc, and limiting devices which either activate the means for correction or provide for shutdown or shutdown and lock out, such as pressure switches or temperature switches etc.

»  Pressure accessories - devices with an operational function and having pressure-bearing housings.

»  Assemblies - several pieces of pressure equipment assembled by a manufacturer to constitute an integrated and functional whole.


»  Note: The Regulations do not apply to the assembly of pressure equipment on the site and under the responsibility of the user, as in the case of industrial installations. In such cases, the Pressure Systems Safety Regulations 2000, which contain 'in use' provisions, will apply.

Safety of pressure systems

A Brief guide to safety

Written scheme Of works

Safety requirements For pressure testing


»  Pressure Systems Safety Regulations 2000 (PSSR) »  The duties imposed by PSSR relate to pressure systems for use at work and the risk

to health/safety. »  The aim of these Regulations is to prevent serious injury from the hazard of

stored energy as a result of the failure of a pressure system or one of its component parts.

»  Before using any qualifying pressure equipment (new or otherwise), a written scheme of examination (WSE) must be in place, and an examination undertaken.


»  Pressure systems are defined 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

is, or is intended to be, connected »  a pipeline and its protective devices


»  A relevant fluid is: »  steam at any pressure »  any fluid or mixture of fluids which is at a pressure >0.5 bar above atmospheric »  a gas dissolved under pressure in a solvent (acetylene) »  Relevant fluids do not include hydraulic oils. Hydraulic systems, while using high

pressures, do not store energy in the system and so are not covered by this legislation.


»  Stored Energy - The amount of stored energy in a vessel is generally considered to be directly related to the volume of the vessel and the pressure of the contents. The measure of the stored energy has been expressed by multiplying the pressure by the internal volume (P x V), ie the pressure-volume product. If the values used are bar for pressure and liters for volume, the measure (or product) is given in bar liters (bl).

»  »  If the system has a stored energy (INC A RELEVANT FLUID) above

•  250b/l then it is to be considered a “Relevant system”


START


»  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.

are your pressure systems safe and compliant€¦ · pssr 2000 (pressure safety system regulation...

Documents