The exhaust detritiation system (EDS) has been operating for the deuterium plasma experiment in large fusion test device since 2016. The EDS consists of two systems: the molecular sieves (MS) type for plasma exhaust gas, the polymer membrane (PM) type for vacuum vessel purge gas during the maintenance activity. The tritium removal performance of the EDS was evaluated for four years. As the operation results, the maximum detritiation factor (DF) of the MS system was achieved to be more than 10³ even though the average tritium concentration in the process gas was less than 10⁴ Bq/m³. On the other hand, the DF of the PM system was less than 10³, because the average tritium concentration during the vacuum vessel maintenance activity was at the order of less than 10³ Bq/m³. Throughout the initial phase of the deuterium plasma experiment, the tritium concentration at the outlet of EDS was maintained to be less than the order of 10² Bq/m³. Also, a failure analysis was performed to evaluate the reliability of the EDS in the initial phase of the operation. Over the four years of operation, the overall failure rate of the MS system was on the order of 10⁻⁵ events/hour.

自2016年以来，排气净化系统（EDS）一直在大型聚变测试设备中用于氘等离子体实验。该系统由两个系统组成：用于等离子体排气的分子筛（MS）型，用于等离子体排气的聚合物膜（PM）型在维护活动期间，用真空容器吹扫气体。对EDS的removal去除性能进行了四年评估。作为操作结果，即使工艺气体中的平均tri浓度小于10 ⁴ Bq / m ³，MS系统的最大破坏因子（DF）也达到了10 ³以上。另一方面，PM系统的DF小于10 ³，因为在真空容器维护活动期间的during平均浓度小于10 ³ Bq / m ³。在整个氘等离子体实验的初始阶段，EDS出口处的concentration浓度保持在小于10 ² Bq / m ^{3的数量级}。另外，在操作的初始阶段进行了故障分析以评估EDS的可靠性。在运行的四年中，MS系统的总体故障率约为10 ^-5事件/小时。