ABSTRACT

The paper summarizes the results of the control blade degradation test CLADS-MADE-02 performed in the Japan Atomic Energy Agency . The test focused on the beginning phase of the accident at Fukushima Dai-Ichi Nuclear Power Plant (1F) Unit 3. The investigation provided important data, especially on the temperature history, exhaust gas measurement, and in situ video of metallic debris formation and relocation to the colder elevations under the test scenario, which reproduced oxidizing conditions during the initial phase of the 1F Unit 3 reactor heat-up. Complementary post-test analysis by metallography, Raman spectroscopy, elemental scanning electron microscope/energy-dispersive X-ray spectrometry spectroscopy, and exhaust gas analysis provided additional data on the local materials interactions that gave insights on the melt progression scenarios. Based on the test results, some decommissioning-related conclusions concerning the formation of new B-rich phases containing Cr and Fe were made.

摘要

该论文总结了在日本原子能厅进行的控制叶片退化试验 CLADS-MADE-02 的结果。测试重点是福岛第一核电站（1F）3号机组事故初期。调查提供了重要数据，特别是温度历史、废气测量以及金属碎片形成和迁移的原位视频测试情景下的较冷海拔，它再现了 1F 3 号机组反应器加热初始阶段的氧化条件。通过金相学、拉曼光谱、元素扫描电子显微镜/能量色散 X 射线光谱和废气分析进行的补充测试后分析提供了关于局部材料相互作用的额外数据，从而深入了解熔体进展场景。