In the case of a severe nuclear power plant accident, tellurium is one of the more problematic and volatile fission products. If released it could become a health issue as it decays to iodine which accumulates in the thyroid gland. Research exists, that indicates tellurium likely interacts with caesium under severe accident conditions, thus it is important to further explore related phenomenon. In this work, tellurium was exposed to high temperature under oxidizing and inert conditions simulating severe accident conditions with and without airborne caesium iodide to determine the effect on the tellurium source term.

The effect of caesium iodide was noticeable on tellurium transport behaviour in the gas phase under oxidizing and inert conditions. Under humid oxidizing conditions with caesium iodide, no significant impact on the total aerosol mass transport was noticed. However, less tellurium was transported through the model primary circuit and a potentially new compound was observed on the filter located after this model. Comparing inert dry to humid with caesium iodide showed an increase in the total aerosol mass transport whereas there was a decrease noticed of the tellurium reaching the filter after the model primary circuit. In the latter case, new unidentified compound(s) correlated to caesium, iodine and tellurium were observed on the filter located after the model.

In this work, evidence was found that tellurium behaviour will be affected by caesium iodide under the investigated conditions. Moreover, it seems that under inert conditions the formed compounds may be stable at close to ambient temperatures. Unlike under oxidizing conditions, where dissociation likely occurred.

在发生严重核电站事故的情况下，碲是问题较多且易挥发的裂变产物之一。如果被释放，它可能会成为一个健康问题，因为它会腐烂成碘，碘会积聚在甲状腺中。已有研究表明，碲可能与严重事故条件下的铯相互作用，因此进一步探索相关现象很重要。在这项工作中，碲在氧化和惰性条件下暴露于高温，模拟了有和没有空气中碘化铯的严重事故条件，以确定对碲源项的影响。

在氧化和惰性条件下，碘化铯对气相中碲传输行为的影响是显着的。在碘化铯的潮湿氧化条件下，未观察到对总气溶胶传质的显着影响。然而，通过模型初级回路传输的碲较少，并且在位于该模型之后的过滤器上观察到一种潜在的新化合物。将惰性干燥与潮湿与碘化铯进行比较显示总气溶胶质量传输增加，而注意到在模型主回路后碲到达过滤器的减少。在后一种情况下，在模型后面的过滤器上观察到与铯、碘和碲相关的新的未识别化合物。

在这项工作中，有证据表明，在所研究的条件下，碘化铯会影响碲的行为。此外，似乎在惰性条件下，形成的化合物在接近环境温度下可能是稳定的。不像在氧化条件下可能发生解离。