Feasibility on the Use of Phased Array Inspection as a Replacement of Radiographic Inspection for Butt Welding of Steel Containment Vessel of Nuclear Power Equipment
-
摘要: 核电设备钢制安全壳作为核反应堆放射性防护的三道屏障之一,对核电的安全性起到至关重要的作用。钢制安全壳对接焊缝的无损检测按照ASME要求需进行100%的射线检测,但是射线检测存在一定的漏检率,尤其是对面积型缺陷(裂纹、未熔合)的检出率较低,并且随着板厚的增加,射线检测的漏检率也不断增加。对相控阵技术进行分析,通过在一定数量的自然缺陷试块上采用相控阵和射线检测进行验证,对比分析得出结论:相控阵检测技术在钢制安全壳对接焊缝检测中具有可行性,可作为一种可靠、高效、经济的技术手段应用于焊缝的质量检测。Abstract: Nuclear power equipment-steel containment vessel as a nuclear reactor radiation protection of one of the three barriers, plays a crucial role on the safety of nuclear power. Steel containment vessel of the butt weld generally requires for 100% the radiographic testing, but radiographic testing has a certain undetected rate, especially the detection rate for planar type defects (cracks, incomplete fusion) is low, and with the increase of thickness, the undetected rate of X-ray testing also increases. Through simulating a certain number of defects on the block to verify the detection between PAUT and RT, we make a conclusion that the PAUT for testing the butt weld of steel containment vessel is feasible, which may provide a reliable, efficient and economic testing method for weld quality.
-
-
[1] 郑晖,林树青.超声检测[M].北京:中国劳动社会保障出版社,2008:20-50. [2] 施克仁,郭寓岷.相控阵超声成像检测[M].北京:高等教育出版社,2010:15-25. [3] MICHAEL D, MOLES C. Introduction to phased array ultrasonic technology application[M]. USA: Olympus NDT, 2004.
[4] ASME V 2010 Boiler & pressure vessel code[S].
[5] MORAN T L, RAMUHALLI P, PARDINI A F, et al. Replacement of radiography with ultrasonic for the nondestructive inspection of welds-evaluation of technical gaps - an interim report[C]//Washington: Pacific Northwest National Laboratory,2010.
[6] 赵晓鑫,王伏喜,鄂楠,等. 相控阵检测与射线检测的缺陷识别对比[J]. 无损检测, 2016, 38(1): 41-44. [7] 李衍.管道环缝相控阵超声探伤技术的应用[J].无损检测,2002,24(9):386-390. [8] 钟德煌,郑攀忠. 便携式相控阵仪在焊缝超声检测中的应用[J].无损检测,2009,31(3):233-235.
计量
- 文章访问数: 3
- HTML全文浏览量: 1
- PDF下载量: 9