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本文分别对轻水堆一回路两种不同的布置方式,推导了一回路中放射性核素浓度的计算方法,并编制了计算机程序。其一是一体化布置方式,即主换热器位于压力壳内,在运行期间一回路水始终处于中子辐照之下;对此又分为在压力壳顶部有气空间和无气空间两种情况。其二是分置式布置,即主换热器位于压力壳之外,在一回路水循环期间仅部分时间处于中子辐照之下。本程序由 FORTRAN 语言编制,在 PDP-11/34 机上运行(程序介绍未写入本文)。
In this paper, two different layouts of the first loop of light water reactor are respectively deduced, the calculation method of radionuclide concentration in the first loop is deduced, and the computer program is compiled. One is the integration of the layout, that the main heat exchanger is located in the pressure shell, during operation, a loop of water is always in the neutron irradiation; this is divided into the top of the pressure shell with air space and no air space two Kind of situation. The second is the split arrangement, that is, the main heat exchanger is located outside of the pressure shell and is only exposed to neutron irradiation during the first-loop water cycle. This program compiled by the FORTRAN language, run on the PDP-11/34 machine (program introduction is not written in this article).