Progress in manufacturing and testing of a first wall mockup for NET/ITER

[Proceedings] The 14th IEEE/NPSS Symposium Fusion Engineering Pub Date : 1991-09-30 DOI:10.1109/FUSION.1991.218800

P. Avanzini, M. Brossa, U. Guerreschi, G. Persano Adorno, N. Pietranera, F. Rosatelli, G. Simbolotti, V. Zampaglione

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Abstract

The proposed first wall (FW) for the NET/ITER (Next European Torus/International Thermonuclear Experimental Reactor) consists of a box structure, made of stainless steel, with an active cooling of the side facing the plasma by a flow of water through the tubes inserted into it. An innovative brazing process to improve the quality of the brazed joints between cooling tubes and plates has been developed and optimized within the framework of NET technological task PDT 1.2. The brazing technique is based on creep expansion of the tubes during the high-temperature holding time of the brazing treatment, which minimizes the gap that was initially present around the tubes. A flat, mockup FW panel with plate dimensions 622*216*33 mm and with eight cooling tubes was built using this technique. Thermal fatigue tests are scheduled to be carried out in the near future on this mockup. An automatic, computerized procedure for the nondestructive examination, of the brazed joints using ultrasonic probes has also been developed.<>

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NET/ITER第一个壁面模型的制造和测试进展

拟议的NET/ITER(下一个欧洲环面/国际热核实验反应堆)的第一面墙(FW)由一个由不锈钢制成的盒子结构组成，面对等离子体的一侧通过插入的管道水流进行主动冷却。在NET技术任务PDT 1.2的框架内，开发并优化了一种创新的钎焊工艺，以提高冷却管与板之间的钎焊接头的质量。钎焊技术是基于在钎焊处理的高温保持时间内管道的蠕变膨胀，这将最初存在于管道周围的间隙最小化。利用这种技术，制作了一个平面的FW模型面板，其板尺寸为622*216*33 mm，并带有8个冷却管。热疲劳试验计划在不久的将来在这个模型上进行。使用超声波探头对钎焊接头进行无损检测的自动计算机程序也已开发出来。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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[Proceedings] The 14th IEEE/NPSS Symposium Fusion Engineering

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