Abstract An issue of estimating the impurity gas amount in fresh ceramic nuclear fuel is discussed from the point of view of their possible influence on parameters of in-pile experiments simulating a severe accident with core melting. A method based on measuring the pressure and temperature of gas in a closed cavity where fuel is fast melted is proposed and experimentally tested under in-pile experiment conditions. The fuel was melted due to internal energy release in the central experimental channel of the research impulse graphite reactor (IGR) during implementation of a controlled neutron impulse.

中文翻译：

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陶瓷燃料中杂质气体量的测定方法及结果

摘要 从新陶瓷核燃料中杂质气体对模拟堆芯严重熔化事故的堆内实验参数可能产生的影响的角度，讨论了估算新陶瓷核燃料中杂质气体量的问题。提出了一种基于测量燃料快速熔化的封闭腔体中气体压力和温度的方法，并在堆内实验条件下进行了实验测试。在实施受控中子脉冲期间，由于研究脉冲石墨反应堆 (IGR) 的中央实验通道中的内部能量释放，燃料被熔化。