BS EN 17527:2021

This standard BS EN 17527:2021 Helium cryostats. Protection against excessive pressure is classified in these ICS categories:

• 13.240 Protection against excessive pressure
• 23.020.40 Cryogenic vessels

This document specifies the minimum requirements for the protection of helium cryostats against excessive pressure, including superconducting magnet cryostats and cryostats for superconducting radio-frequency cavities, coldboxes of helium refrigerators and liquefiers as well as helium distribution systems including valve boxes. It covers the subjects of accidental scenarios and risk assessment, protection concepts, dimensioning of pressure relief devices, types of pressure relief devices, substance release, operation of helium cryostats and materials for pressure relief devices. In order to fulfil the aim of this Standard, the characteristics of pressure relief devices are taken into account.