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BS ISO 21013-4:2012+A1:2019
Cryogenic vessels. Pilot operated pressure relief devices Pressure-relief accessories for cryogenic service
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| Standard number: | BS ISO 21013-4:2012+A1:2019 |
| Pages: | 18 |
| Released: | 2019-05-13 |
| ISBN: | 978 0 539 01340 5 |
| Status: | Standard |
DESCRIPTION
BS ISO 21013-4:2012+A1:2019
This standard BS ISO 21013-4:2012+A1:2019 Cryogenic vessels. Pilot operated pressure relief devices is classified in these ICS categories:
- 23.020.40 Cryogenic vessels
This part of ISO 21013 specifies the requirements for the design, manufacture and testing of pilot operated pressure-relief valves for cryogenic service, i.e. for operation with cryogenic fluids in addition to operation at temperatures from ambient to cryogenic. This part of ISO 21013 is restricted to valves not exceeding a size of DN 300 designed to relieve single phase vapours, gases, or mixtures of gases and/or vapours.
This part of ISO 21013 does not provide methods for determining the capacity of relief valve(s) for a particular cryogenic vessel. Such methods are provided in ISO 21013‑3.