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首页> 外文会议>Ceramic materials for energy applications II >RECESSION OF SILICON CARBIDE IN STEAM UNDER NUCLEAR PLANT LOCA CONDITIONS UP TO 1400 ℃.
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RECESSION OF SILICON CARBIDE IN STEAM UNDER NUCLEAR PLANT LOCA CONDITIONS UP TO 1400 ℃.

机译：高达1400℃的核素工厂LOCA条件下蒸汽中碳化硅的还原。

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摘要

Ceramic Tubular Products is developing a multilayered silicon carbide tube for use as fuel cladding in commercial nuclear reactors. In this project, we exposed a number of alpha and beta phase SiC monolith specimens to the type of steam conditions that would exist in a commercial water reactor during a design basis LOCA (Loss of Coolant Accident). We also exposed specimens at 1400℃, which is 200℃ above the conditions allowed by regulations for a design basis LOCA, and for times up to 8 hours, substantially exceeding the times allowed under current regulatory criteria for licensing of zircaloy clad fuel. The measured recession, and calculated hydrogen gas released during this exposure was compared with that calculated for zircaloy cladding under the same conditions. For example, for a 4 hour exposure test at 1400℃, the measured recision (loss of clad wall thickness) for SiC, adjusted for actual 17 × 17 LWR fuel clad dimensions, was 0.07%, as compared with 42.1% recession calculated for zircaloy. The data thus demonstrates that use of this cladding in commercial LWRs instead of zircaloy will substantially increase the safety margin of LWRs when subject to Loss of Coolant accidents such as recently occurred at Fukushima. This work was sponsored by the US Department of Energy under Small Business Innovative Research Grant DE-SC0004225.
机译：陶瓷管状产品公司正在开发一种多层碳化硅管，用作商用核反应堆的燃料包壳。在该项目中，我们将许多α和β相SiC整体样品暴露于商业水反应堆中设计基准LOCA（冷却剂事故损失）中可能存在的蒸汽条件类型。我们还将标本LOCA按设计允许的条件在1400℃（比法规允许的条件高200℃）下暴露了试样，暴露时间长达8小时，大大超过了现行的锆合金复合燃料许可标准所允许的时间。在相同条件下，将测得的回缩量和计算得出的在此暴露时间内释放出的氢气与锆合金熔覆层计算出的值进行了比较。例如，对于在1400℃下进行4小时的暴露测试，根据实际的17×17 LWR燃料包层尺寸进行调整后，测得的SiC的测量精度（包层壁厚损失）为0.07％，而锆合金的衰退量为42.1％ 。因此，数据表明，在遭受诸如最近在福岛发生的冷却液损失事故时，在商用轻水堆中使用这种覆层代替锆合金将大大提高轻水堆的安全裕度。这项工作是由美国能源部在小型企业创新研究补助金DE-SC0004225下赞助的。

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  • 会议地点 Daytona Beach FL(US);Daytona Beach FL(US);Daytona Beach FL(US);Daytona Beach FL(US);Daytona Beach FL(US);Daytona Beach FL(US)
  • 作者

    Greg Markham; Rodney Hall; Herbert Feinroth;

  • 作者单位

    Ceramic Tubular Products LLC;

    Ceramic Tubular Products LLC;

    Ceramic Tubular Products LLC;

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  • 正文语种 eng
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