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首页> 外文期刊>Nuclear Technology >A CONTAINER BASED ON POLYMER COMPOSITE MATERIALS FOR THE ULTIMATE DISPOSAL OF SPENT NUCLEAR FUEL AND RADIOACTIVE WASTE
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A CONTAINER BASED ON POLYMER COMPOSITE MATERIALS FOR THE ULTIMATE DISPOSAL OF SPENT NUCLEAR FUEL AND RADIOACTIVE WASTE

机译：基于聚合物复合材料的容器，用于最终处理核燃料和放射性废料

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摘要

This work demonstrates the feasibility of fabricating containers for the ultimate disposal of spent nuclear reactor fuel and high-level radioactive waste using polymer-based composite materials. The study has identified three engineering polymers suitable for this demanding application: polyetheretherketone (PEEK), polyetherimide (PEI), and polysulfone (PSU). PEEK and PEI are used as composite materials components, with 30% carbon and glass fiber, respectively, whereas PSU is used as a virgin (nonreinforced) material. The rationale for the choice of polymer composites comes from their superior physical, mechanical, and chemical performance, in addition to their economical advantage. In particular, they display better resistance to corrosion and to structural weakening from irradiation.rnScaled-down containers were fabricated using these materials. They were subjected to a battery of tests under conditions similar to those expected for the disposal environment of actual radioactive waste-filled containers. In particular, the container models were irradiated in the pool of a SLOWPOKE-2 nuclear research reactor, accumulating doses from a mixed-radiation field that were comparable to total doses accumulated over 500 yr at a deep underground waste repository site. Mechanical compression tests mimicked the large hydrostatic pressures incurred from granite rock at depths of some 1000 m within the Canadian Shield.rnSeveral composite materials were tested, and for the three engineering materials listed above, some of the results are as follows:rn1. variation in elastic modulus following a 28.9-kGy radiation dose-PEEK, -6.66% ± 0.47%; PEI, +5.63% ± 0.23%; PSU, +3.16% ± 0.13%rn2. compression results for the irradiated container models and load at break and strain-PEEK, 2.152 MPa and 1178 μm m~(-1); PEI, 1.236 MPa and 1171 μm m~(-1); PSU, 1.190 MPa and 2576 μm m~(-1), respectivelyrn3. cost analysis-costs for the fabrication of the prototype containers based on PEEK, $273610; PEI, $145920; PSU, $257460.rnThe work also provided insight into potential problems in the fabrication of full-sized containers and into the best fabrication methods to adopt. The method of filament winding would be more appropriate for the PEEK- and the PEI-based composite materials, while blow forming would be the preferred method for the PSU material. In particular, this research could determine the best way to design the container lids.
机译：这项工作证明了使用聚合物基复合材料制造用于最终处理乏核反应堆燃料和高放射性废物的容器的可行性。该研究确定了三种适用于这种苛刻应用的工程聚合物：聚醚醚酮（PEEK），聚醚酰亚胺（PEI）和聚砜（PSU）。 PEEK和PEI分别用作复合材料的成分，碳和玻璃纤维含量分别为30％，而PSU则用作纯净（非增强）材料。选择聚合物复合材料的基本原理是，除了其经济优势外，还具有出色的物理，机械和化学性能。特别是，它们显示出更好的耐腐蚀性和抗辐照引起的结构减弱的能力。使用这些材料制造了按比例缩小的容器。他们在与实际放射性废物填充容器的处置环境所预期的条件相似的条件下进行了一系列测试。特别是，将容器模型辐照在SLOWPOKE-2核研究反应堆的池中，从混合辐射场累积的剂量与在地下废物处置库深处累积500多年的总剂量相当。机械压缩试验模拟了加拿大盾构内约1000 m深度的花岗岩岩石产生的巨大静水压力。rn对几种复合材料进行了测试，对于上述三种工程材料，一些结果如下：rn1。 28.9 kGy辐射剂量PEEK后的弹性模量变化为-6.66％±0.47％; PEI，+ 5.63％±0.23％； PSU，+ 3.16％±0.13％rn2。辐照容器模型的压缩结果以及断裂载荷和应变PEEK，2.152 MPa和1178μmm〜（-1）; PEI，1.236 MPa和1171μmm〜（-1）; PSU分别为1.190 MPa和2576μmm〜（-1）rn3。成本分析-基于PEEK的原型容器的制造成本为273610美元； PEI，$ 145920; PSU，257460.rn该工作还提供了对全尺寸容器制造中潜在问题以及采用的最佳制造方法的见解。长丝缠绕的方法将更适合于PEEK和PEI基复合材料，而吹塑将是PSU材料的首选方法。特别是，这项研究可以确定设计容器盖的最佳方法。

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  • 来源
    《Nuclear Technology》 |2010年第2期|150-179|共30页
  • 作者

    H. W. BONIN; J. R. VAN TINE; V. T. BUI;

  • 作者单位

    Royal Military College of Canada Department of Chemistry and Chemical Engineering, P.O. Box 17000 Station FORCES, Kingston, Ontario K7K 7B4, Canada;

    Royal Military College of Canada Department of Chemistry and Chemical Engineering, P.O. Box 17000 Station FORCES, Kingston, Ontario K7K 7B4, Canada;

    Royal Military College of Canada Department of Chemistry and Chemical Engineering, P.O. Box 17000 Station FORCES, Kingston, Ontario K7K 7B4, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spent nuclear fuel; disposal containers; polyetherimide composite;

    机译：乏核燃料;处置容器;聚醚酰亚胺复合材料;

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