. It provides the normative requirements for installing equipment like safety valves and controlled relief systems to ensure they function correctly as the final line of defense for static pressure equipment. ISO - International Organization for Standardization 1. Scope and Core Purpose
ISO 4126-9:2008 – Safety devices for protection against excessive pressure – Part 9: Application and installation of safety devices excluding stand-alone bursting disc safety devices Iso 4126-9 Pdf
The standard differentiates between: