核电站大直径厚壁对接环焊缝射线检测灵敏度的影响因素

详细信息

Sensitivity Influencing Factors of Radiographic Inspection of Large Diameter Thick-Walled Butt Girth Welding Seam in Nuclear Power Plant

摘要: 针对核电站大直径厚壁环焊缝射线检测灵敏度下降的问题，以核电站主管道为试验对象，对缺陷自身高度、缺陷宽度、射线源焦点尺寸、缺陷深度、射线源角度和射线源位置等主要影响因素进行重点分析，通过CIVA软件的模拟，以及带缺陷试块的透照试验，得出了影响射线检测灵敏度的几个重要因素。
- 核电站 /
- 射线检测 /
- 灵敏度 /
- 大直径厚壁工件
Abstract: Due to the sensitivity of the X-ray inspection decreased in thick-walled workpiece inspection, the main pipeline of nuclear power plant was used as the research object, and the major influencing factors of the height and width of the defect, the X-ray focus size, defect depth, and the angle and position of X-ray source were analyzed. Through the software CIVA simulation and radiography of test block, several important factors affecting the sensitivity of radiographic inspection were shown.
- nuclear power plant /
- radiographic examination /
- sensitivity /
- large diameter thick-walled workpiece

[1]	闫业良, 李晓泉, 邹华. 大厚壁压力容器封头焊接工艺研究[J]. 焊接技术,2014(12):35-37.
[2]	强天鹏, 宋继红, 王晓雷, 等. 射线检测[M]. 北京:中国劳动社会保障出版社, 2007.
[3]	严宇, 魏鹏, 刘丽丽,等. CIVA软件仿真曝光次数对射线检测结果的影响[J]. 无损探伤,2014,38(2):19-21.
[4]	牛继承, 张玉祥, 王任甫. 大壁厚14CrNi5MoV铸钢的组织及力学性能研究[J]. 铸造技术, 2011, 32(8):1078-1080.
[5]	王增勇, 李建文, 汤光平,等. 长罐体环焊缝缺陷定量检测技术[J]. 焊接技术,2014(12):59-62.