特燃承压设备常年在恶劣环境下运行，容易发生腐蚀穿孔和泄漏事故。介绍了数字成像射线检测技术的基本原理和特点，以及腐蚀缺陷的X射线数字检测试验对比结果，研究了腐蚀缺陷X射线数字成像检测方法。通过大量管道现场检测实例表明：X射线数字检测方法既能检测承压设备焊接接头的缺陷，也可对特燃管道表面的腐蚀情况进行快速抽查，是承压设备焊接缺陷和腐蚀情况巡查的有效检测手段。

The special type of fuel pressure equipment in-service was always in hazard condition and corrosion perforation occurs frequently. The leakage of hazardous medium shall cause serious disaster and environment pollution. In this paper, the principle and characteristics of digital radiography and experimental results were introduced, and digital radiographic corrosion imaging technique on the pipeline was researched. Practical applications showed that the method for the special type of fuel of pressure pipeline of large area scanning was a fast way,it was an effective means for the pressure equipment welding defects and corrosion detection.