本文件规定了在任何预期操作条件下与低温流体接触的低温容器和相关附件的所有表面清洁度的最低要求。 本文件规定了表面和颗粒污染的可接受水平，以将设备故障风险降至最低，并确保接触氧气或氧化液体时的点火安全（见ISO 10156）。包含以下内容:BS EN ISO 23208:2019

This document specifies the minimum requirements for the cleanliness of all surfaces of cryogenic vessels and associated accessories that are in contact with the cryogenic fluid at any expected operating conditions. This document defines the acceptable level of surface and particle contamination to minimize the risk of malfunction of equipment and ensure safety against ignition when in contact with oxygen or oxidizing fluids (see ISO 10156).Incorporates the following:BS EN ISO 23208:2019