IEC 61821 Ed.2: Electrical installations for lighting and beaconing of aerodromes - Maintenance of aeronautical ground lighting constant current series circuits

IEC 61820, Ed.1: Electrical installations for lighting and beaconing of aerodromes: Constant current series circuits for aeronautical ground lighting: System design and installation requirements

Electrical installations for aeronautical ground lighting at aerodromes - Part 2: Requirements for series circuits (IEC 97/219/CD:2020); Text in German and English

Static thermoplastic tank with its specific secondary containment for above ground storage of fuel - Product characteristics and test methods

GRP tanks and vessels for use above ground - Part 3: Design and workmanship; German and English version prEN 13121-3:2022

Static thermoplastic tanks for above ground storage of liquid fuels at atmospheric pressure - Product characteristics and test methods

Static thermoplastic tanks for above ground storage of liquid fuels at atmospheric pressure - Product characteristics and test methods

Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above

Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above

Subsoil - Water effects on building components in contact with the ground and drainage for the protection of these building components - Part 1: Definitions and water effects