The directive covers pressure equipment and assemblies with a maximum allowable pressure PS greater than 0.5 bar.
Pressure equipment means vessels, piping, safety accessories and pressure accessories.
Assemblies means several pieces of pressure equipment assembled to form an integrated, functional whole. Intention of legislation To remove technical barriers to trade by harmonising national laws of legislation regarding the design, manufacture, marking and conformity assessment of pressure equipment. It does not deal with in-use requirements which may be necessary to ensure the continued safe use of pressure equipment. It covers a wide range of equipment such as, reaction vessels, pressurised storage containers, heat exchangers, shell and water tube boilers, industrial pipework, safety devices and pressure accessories. Such equipment is widely used in the chemical, petro- chemical, biochemical, food processing, refrigeration and energy industries and for power generation.