TS 12420

TS 12420 is a service standard focused on how competent services for pressure vessels and tanks should be organized and what minimum characteristics they should have. Its scope covers pressure vessels and tanks of 300 litres and above, used above ground or underground, for liquid or gaseous LPG, CNG, oxygen, nitrogen, acetylene and similar gases, as well as cryogenic applications. Gas cylinders are excluded from the scope.

Core elements expected from a competent service

The standard addresses the management structure of the service provider, its physical characteristics, technical equipment, and the qualifications of its personnel. In practical terms, this means the service is expected to operate within an organized and technically responsible framework when handling pressure vessels and tanks. As general technical context, equipment of this kind can differ significantly in risk profile and maintenance needs depending on the stored medium, operating pressure, volume, and installation location; service competence is therefore central to reliable operation.

This standard is about the service organization, not the design of the vessel or tank itself. It is useful for understanding the service environment around stationary containers, tanks, and related facility equipment used in storage and distribution systems, including the routines linked to maintenance, inspection, repair, and operational organization. The exclusion of gas cylinders is important because portable cylinder equipment has different handling, use, and service expectations from larger fixed vessels and tanks.