本文件介绍了氚和碳采样的方法和规定14在运行和退役期间，核设施产生的气体流出物中。具体包括样品提取位置、提取、运输流量测量和收集以供以后分析。 本文件不涉及烟囱和管道排出空气中氚活性和碳-14活性的实时测量。有关实时测量的信息可以在ISO中找到2889:2021，附件H 氚和碳的样品处理、分析和计算14排放将在ISO的未来部分解决20041

This document presents the methods and provisions for sampling tritium and carbon？14 in the gaseous effluents generated by nuclear facilities during operation and decommissioning. Specifically included are sample withdrawal location, extraction, transport flow measurement, and collection for later analysis. This document doesn’t address to real time measurements of tritium activity and carbon-14 activity in the effluent air of stacks and ducts. Information about real time measurements can be found in ISO？2889:2021, Annex？H. Sample processing, analysis and calculations of tritium and carbon？14 emissions will be addressed in future parts of ISO？20041.