Full Description

ISO 21013-2:2007 specifies the requirements for the design, manufacture and testing of nonreclosable pressurerelief devices for cryogenic service, i.e. for operation with cryogenic fluids in addition to operation at temperatures from ambient to cryogenic.

ISO 21013-2:2007 is restricted to burstingdisc and bucklingpin devices not exceeding a size of DN 200 designed to relieve singlephase vapours or gases. A burstingdisc or bucklingpin assembly may be specified, constructed and tested such that it is suitable for use with more than one gas or with mixtures of gases.

ISO 21013-2:2007 does not provide methods for determining the capacity of bursting disc or buckling pin devices for a particular cryogenic vessel. Such methods are provided in ISO 21013-3.