Hot Spot: ISO/DIS 21011:2021 Cryogenic Vessels-Valves for Cryogenic Service DIS Enquiry

What is it?

The draft revision of ISO 21011:2008 Cryogenic Vessels-Valves for Cryogenic Service has now been issued for DIS enquiry by ISO TC220.

The document specifies the requirements for the design, manufacture and testing of valves for a rated temperature of −40 °C and below for operation with cryogenic fluids in addition to operation at temperatures from ambient to cryogenic. It applies to all types of cryogenic valves, including vacuum jacketed cryogenic valves up to size DN 200. This document can be used as guidance for larger size valves. This document is not applicable to pressure relief valves covered by ISO 21013-1.

Why is it Important?

This international application standard specifies requirements for the design, materials, marking and testing of valves for cryogenic service. This revision of the standard extends the scope to up to DN200 and contains revisions/ additions to the specified type approval tests. It has also been agreed by CEN TC 268 that under the Vienna agreement this standard will replace EN 1626:2008 with ISO leading the development of the standard. Therefore, EN ISO 21011:2021 is intended to be a harmonised standard including an Annex ZA that satisfies some of the requirements of the PED. If you are involved in the design and manufacture of cryogenic valves this draft standard contains requirements that may directly affect your products and business both in Europe and internationally. Please submit any comments that you may have to the BVAA secretariat by 24/5/21 so that we may pass them on to BSI PSE/018/1 for BSI consideration prior to their vote.

Please note: this Hotspot is for information purposes only. We invite comments from BVAA members only. Please also note that at time of publication ballots may be closed. For more information please contact the Secretariat.