BS EN 764
:Pressure equipment
Part 1: Terminology — Pressure, temperature, volume, nominal size (2004)
Part 2: Quantities, symbols and units (2012)
Part 4: Establishment of technical delivery conditions for metallic materials (2002)
Part 5: Compliance and Inspection Documentation of Materials (2002)
Part 7: Safety systems for unfired pressure equipment (2002)
BS EN 764 (2014):Pressure equipment