WASTE CLASSIFICATION ASSESSMENT OF NUCLEAR STEELS FOR FUSION POWER APPLICATIONS
WASTE CLASSIFICATION ASSESSMENT OF NUCLEAR STEELS FOR FUSION POWER APPLICATIONS
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聚变发电应用核钢的废物分类评估
DOI：
10.1051/epjconf/202124718003
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发表时间：
2021
影响因子：
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通讯作者：
O. Vilkhivskaya
中科院分区：
文献类型：
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作者：
G. Bailey;M. Gilbert;O. Vilkhivskaya
聚变发电是满足世界未来能源需求的一个有吸引力的选择。聚变的一个重要目标是避免与核裂变相关的严重放射性废物问题。然而，聚变等离子体反应中产生的中子撞击周围的反应堆结构，导致核激活。人们希望聚变设施中的活性物质能够在停止运行 50-100 年后作为低放废物进行处理，但最近的研究表明这可能很难实现。这项工作针对 DEMO 反应堆概念典型的两种中子辐照条件，对许多潜在的熔钢进行了库存模拟。结果用于确定钢材是否符合许多不同国际废物管理系统的低水平废物法规。这些结果表明，当钢暴露于近等离子体中子通量时，似乎无法始终满足低水平废物要求。当暴露于较低的通量时，它们会取得更大的成功，但传统钢仍然难以满足聚变环境中低水平废物的要求。
Fusion power is an attractive option for the world’s future energy needs. An important goal for fusion is to avoid the severe radioactive waste issues associated with nuclear fission. However, the neutrons produced in the fusion plasma reaction impinge on the surrounding reactor structure causing nuclear activation. It is hoped that activated material from fusion facilities can be disposed of as low level waste 50-100 years after operation ceases, but recent work suggests this may be difficult to achieve. This work presents inventory simulations for a number of potential fusion steels, for two neutron irradiation conditions typical of the DEMO reactor concept. The results are used to determine if the steels meet low level waste regulations, for a number of different international waste management systems. These results show that steels do not appear able to consistently meet low level waste requirements when exposed to near-plasma neutron fluxes. They have more success when exposed to lower fluxes, but traditional steels will still struggle to meet low level waste requirements in a fusion environment.