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Corrosion of Steel Drums Containing Cemented Ion-Exchange Resins as Intermediate Level Nuclear Waste

机译:含水泥离子交换树脂作为中级核废料的钢桶腐蚀

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Ion-exchange resins are used for purification of radioactive liquid waste from nuclear reactors. After exhaustion, resins become intermediate level radioactive waste to be managed. They have to be immobilized before being stored to improve the leach resistance of the waste matrix and to maintain mechanical stability for safety requirements. The immobilized resins are thus contained in steel drums that can undergo internal corrosion depending on the presence of certain contaminants. This work shows an study of the corrosion susceptibility of steel drums in contact with cemented ion-exchange resins with different types and contents of aggressive species. Results show that the corrosion depth of the steel drums after a period of 300 years (foreseen life-span of the radioactive waste disposal facility), in the most unfavorable case (high chloride contamination), will be considerably lower than the thickness of the wall of the drums.
机译:离子交换树脂用于纯化来自核反应堆的放射性液体废物。耗尽后,树脂成为要管理的中级放射性废物。它们必须在储存前固定下来,以提高废物基质的耐浸出性,并为了安全要求而保持机械稳定性。因此,固定化树脂包含在钢桶中,钢桶会根据某些污染物的存在而发生内部腐蚀。这项工作显示了对钢桶与具有不同类型和含量的侵蚀性物质的胶结离子交换树脂接触的腐蚀敏感性的研究。结果表明,在最不利的情况(高氯污染)下,经过300年(放射性废物处理设施的可预见寿命),钢桶的腐蚀深度将大大低于壁的厚度。鼓。

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