本文介绍了在研究性重水反应堆烟囱中进行的取样条件实验。参照国际标准 ISO-2889中推荐的原则,设计与安装了新的取样系统。通过测量烟囱中气体的混合度和气流速度的分布,检验了取样的代表性。还实测了新取样系统的传输损失:微粒和碘的传输系数分别,约为0.8和0.7,与理论估算值相一致。 This article describes the experimental conditions for sampling in a research heavy water reactor stack. Reference to the international standard ISO-2889 recommended in the principle of design and installation of a new sampling system. The representative samples were tested by measuring the degree of gas mixing in the stack and the distribution of gas velocity. The transmission loss for the new sampling system was also measured: the transfer coefficients for particles and iodine were approximately 0.8 and 0.7, respectively, consistent with the theoretical estimates.