Abstract

A technique is described and analysis of radioactive nanoaerosols formed during heating of spherical simulators of fuel elements for high-temperature gas-cooled reactors in helium to 1500 K has been carried out. It was found that upon high-temperature gas corrosion and leakage of radioactive fission products from fuel elements, nanoaerosols of graphite with iodine and tellurium isotopes can be formed. More than 80% of their γ-activity is accounted for by particles ranging in size from 0.002 to 0.5 μm. Their filtration by highly efficient fiberglass and membrane cermet filters with multilayer and regenerable nanostructure at increased temperatures has been studied.

中文翻译：

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氦气燃料元件球形模拟器加热过程中纳米颗粒的分析和过滤

摘要

描述了一项技术，并对在氦气中高温气冷反应堆燃料元件的球形模拟器加热至 1500 K 期间形成的放射性纳米气溶胶进行了分析。研究发现，在高温气体腐蚀和燃料元件放射性裂变产物泄漏时，会形成具有碘和碲同位素的石墨纳米气溶胶。超过 80% 的 γ 活性是由尺寸在 0.002 到 0.5 μm 之间的颗粒引起的。已经研究了它们在升高的温度下通过具有多层和可再生纳米结构的高效玻璃纤维和膜金属陶瓷过滤器的过滤。