Draft International Standard
ISO/DIS 21013-2
Cryogenic vessels — Pressure-relief accessories for cryogenic service — Part 2: Non-reclosable pressure-relief devices
Reference number
ISO/DIS 21013-2
Edition 2
International Standard
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ISO/DIS 21013-2
This Draft International Standard is in the enquiry phase with ISO members.
Will replace ISO 21013-2:2007

ISO/DIS 21013-2

ISO/DIS 21013-2
CHF 63
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ISO 21013-2:2007 specifies the requirements for the design, manufacture and testing of non‑reclosable pressure‑relief 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 bursting‑disc and buckling‑pin devices not exceeding a size of DN 200 designed to relieve single‑phase vapours or gases. A bursting‑disc or buckling‑pin 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.

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