Self-irradiation can affect durability of glasses used to immobilize high-level nuclear waste (HLW). The stability of glasses can also be indirectly affected by the radiolytic changes in contact water leading to decrease in its pH although this is unlikely to occur for disposal systems where the interaction of groundwater with glass is delayed to times when radiation dose rates are decreased to levels insignificant to cause such effects. Besides, interaction of the water influenced by radiation with other repository protective elements (container and bentonite) will suppress the radiolytic changes. Literature analysis shows practical absence or very weak effect of self-irradiation on structure and characteristics of borosilicate glasses with typical content of nuclear waste. Data for aluminophosphate glass used in Russia have showed that, after γ-irradiation with a dose of 6.2·10⁷ Gy, the leaching rates of elements were decreased approximately twice relatively to pristine samples.

中文翻译：

---

辐射对核废玻璃禁闭性能的影响

自辐射会影响用于固定高级别核废料（HLW）的玻璃的耐用性。玻璃的稳定性还可以间接受到接触水的辐射分解变化的影响，从而导致其pH值降低，尽管对于处置系统而言，玻璃与地下水的相互作用被延迟到辐射剂量率降低到一定水平的时间，这种情况不太可能发生造成这种影响的微不足道。此外，受辐射影响的水与其他储存库保护元件（容器和膨润土）的相互作用将抑制辐射变化。文献分析表明，对于典型核废料含量的硼硅酸盐玻璃，结构上的自辐照实际上缺乏或影响很小。俄罗斯使用的磷酸铝玻璃的数据显示，剂量为6.2·10 ⁷  Gy的γ射线辐照，元素的浸出率相对于原始样品降低了约两倍。