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建立模块式小型堆(ACP100)严重事故分析程序(MAAP)电厂模型,并经过稳态调试,各稳态运行参数与设计参数的误差在1%左右,表明所建立模型准确度较高。采用所建MAAP模型对ACP100严重事故进行了模拟,给出了事故进程及裂变产物向环境释放变化趋势,结果表明:在安全壳保持完整的条件下,惰性气体向环境的累积释放份额与时间成线性关系,随时间增加而增大;其他元素组向环境的累积释放份额在一段时间后达到最大,之后保持不变。该分析结果为ACP100严重事故条件下放射性释放和场外剂量分析奠定了基础。
The power plant model of the modular mini-reactor (ACP100) severe accident analysis program (MAAP) was established. After steady-state debugging, the error between the steady-state operating parameters and the design parameters was about 1%, indicating that the established model has higher accuracy. The MAAP model was used to simulate ACP100 serious accidents and the trend of the accident and the release of fission products to the environment were given. The results showed that the cumulative release of inert gas to the environment and the time The linear relationship increases with time. The cumulative release of other elements to the environment reaches the maximum after some time, and remains the same afterwards. The results of this analysis laid the foundation for the radioactive release and off-site dose analysis under severe ACP100 accident conditions.