Foreword

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This document was prepared by Technical Committee ISO/TC 220, Cryogenic vessels.

This second edition cancels and replaces the first edition (ISO 21014:2006), which has been technically revised.

The main changes compared to the previous edition are as follows:

— Clause 2 has been added and subsequent clauses and cross-references updated.
— For clarity, “set pressure of the pressure-limiting device” has been reworded to “set pressure of the lowest set pressure-limiting device on stream” in subclauses 3.5, 3.5.3, and 3.6.
— “(100 % for helium)” has been added to 7.2 b) 1).
— In subclause 7.2 c), the denominator in the formula for m_ig has been corrected from v_el to v_il.

Any feedback or questions on this document should be directed to the user’s national standards body. A complete listing of these bodies can be found at www.iso.org/members.html.

BS ISO 21014:2019+A1:2022

Cryogenic vessels. Cryogenic insulation performance

Current

Published:

30 Sep 2022