Abstract

In the in-service radiographic testing of water-filled pipes, the interaction of radiation with water diminishes the quality of the transmitted radiation to cause severe degradation in the radiographic sensitivity. In this paper, simulation work was carried out to investigate the radiographic testing of a water-filled pipe using X-ray and Ir-192 gamma source. The radiation reaching the film was studied, and accordingly, an approach to improve the radiographic sensitivity by optimizing the radiographic screen to control the scattered radiation was proposed. The approach showed promising indications, so the experimental work was proceeded using X-ray to validate the simulation results. The sensitivity, measured by the visibility of the Image Quality Indicator, was better in the radiographs obtained utilizing the proposed approach than that offered in the test used the standard screens.

中文翻译：

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在管道的在线测试中优化射线照相灵敏度

摘要

在对充满水的管道进行在线射线照相测试时，射线与水的相互作用会降低透射射线的质量，从而导致射线照相感光度严重下降。在本文中，进行了模拟工作，以研究使用X射线和Ir-192伽马射线源对充水管道进行的射线照相测试。对到达胶片的辐射进行了研究，因此，提出了一种通过优化射线照相屏幕以控制散射射线来提高射线照相灵敏度的方法。该方法显示出令人鼓舞的迹象，因此使用X射线进行了实验工作以验证仿真结果。灵敏度（通过“图像质量指示器”的可见度来衡量）