Protecting sealed vacuum systems like cryopumps, cryostats, lifting devices, for example against internal overpressures / āļāđāļ§āļĒāļĢāļ°āļāļēāļĒāļāļ§āļēāļĄāļāļąāļāļŠāđāļ§āļāđāļāļīāļāļāļāļāļāļēāļāļĢāļ°āļāļ āļāđāļāļāļāļąāļāļāļ§āļēāļĄāđāļŠāļĩāļĒāļŦāļēāļĒāļāļĩāđāļāļēāļāđāļāļīāļāļāļąāļāļāļąāđāļĄāđāļāļĢāļ°āļāļāđāļāđ
Mandatory for systems which are separated when cold, as a means of protection against overpressures