低温低压试验回路辐照钼锝同位素安全研究

Safety Research on Mo-Tc Isotope Irradiation with Low Temperature and Low Pressure Test Loop

钼锝同位素是一种重要的医用同位素,铀-235在低温低压堆内试验回路中进行辐照是钼锝同位素生产的一种重要方法。为了确保钼锝同位素辐照过程不会危及试验回路、研究堆的安全,建立了回路的RELAP5模型,并对钼锝同位素生产进行安全分析研究。分析结果表明,即使辐照过程中发生了典型的设计基准事故,也不会对靶件、试验回路及反应堆构成威胁,辐照过程符合安全要求。

Mo-Tc isotope is an important medical isotope.The irradiation of 235 U in the low-temperature and low-pressure in-core test loop is an important method for Mo-Tc isotope production.In order to ensure the test loop and reactor are safe in the irradiation process of Mo-Tc isotope,the RELAP5 model of the loop was developed and the safety analysis was performed on the production of Mo-Tc isotope with the low-temperature and low-pressure test loop.The calculated results show that the Mo-Tc isotope irradiation process will not endanger the safety of the test loop and the research reactor,and the safety requirements are met during a typical design basis accident.