发明名称 |
X-ray fluorescence inspection apparatus |
摘要 |
The apparatus enables measurement of the amount of contaminant in a welded portion to high accuracy and in a short time, using an X-ray fluorescence inspection apparatus. The end portion of a fuel rod having a bead portion on an end surface of an end plug is covered with an approximately cylindrical cap, with the bead portion exposed via a central aperture. The material of the cap is preferably titanium. With titanium the fluorescent X-ray radiation has a different wavelength from that of tungsten and zircaloy, and the amount of fluorescent X-ray radiation detected by a detector at a diffraction angle of the spectrum W-L alpha of fluorescent X-ray radiation for tungsten is less than those for tungsten and zircaloy. Therefore, while the fluorescent X-ray radiation of the cap which covers the end surface of the end plug around the bead portion results in noise, the amount of this fluorescent X-ray radiation measured by the detector is much smaller than for the tungsten and the zircaloy of the bead portion.
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申请公布号 |
US6272203(B1) |
申请公布日期 |
2001.08.07 |
申请号 |
US19990368413 |
申请日期 |
1999.08.05 |
申请人 |
MITSUBISHI NUCLEAR FUEL CO., LTD.;MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
YONEDA EIJI;ASANO YASUHISA |
分类号 |
G01N23/223;G21C17/06;(IPC1-7):G01N23/223 |
主分类号 |
G01N23/223 |
代理机构 |
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主权项 |
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地址 |
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