田湾核电站7、8号机组常规岛0米及以上工艺管道多，无混凝土墙防护，在建机组距运行机组距离近，辐射防护难度大，加之俄方设计要求对田湾核电站7、8号机组主蒸汽等厚壁管道进行射线检测，严重增加了无损检测难度。

相控阵检具有测灵敏度高、定位准确、无辐射风险等优势，田湾项目部原有相控阵检测可行性验证无法覆盖大壁厚管道，面临厚壁管检测时间长、检测难度大，检测时间紧等诸多难题。田湾项目部工程管理三部以党员为先锋，组织技术骨干力量，打造技术型、创新型、协同型攻坚团队，组织江苏核电、中核咨询、江苏电建三评估策划推动相控阵新技术研究，通过召开专项会议，工程例会跟踪落实，全力推动完成厚壁管道相控阵检测对比试验、可行性分析、专家评审会、设计变更及现场检测等各项工作。

田湾核电站7、8号机组厚壁管相控阵检测的顺利开展，进一步提升了田湾核电相控阵检测应用范围及技术水平。减轻了探伤工工作压力，降低了辐射防护风险，提升了厚壁管检测效率，此次突破是田湾项目部发展新质生产力、不断探索和应用前沿技术的生动体现，为工程建设顺利实施提供了有力保障，为核电创新技术应用积累了宝贵经验。

Tianwan Nuclear Power Plant 7, 8 units of the conventional island of 0 meters and above the process pipeline, no concrete wall protection, the unit under construction is close to the operating unit, radiation protection is difficult, coupled with the Russian design requirements for Tianwan nuclear power plant 7, 8 units of the main steam and other thick wall pipeline X-ray testing, seriously increased the difficulty of non-destructive testing.

Phased array inspection has the advantages of high sensitivity, accurate positioning and no radiation risk, but the feasibility verification of phased array inspection in Tianwan Project Department cannot cover the large-wall thick pipe, so it is faced with many problems such as long detection time, difficult detection and tight detection time. The third engineering management department of Tianwan Project Department takes Party members as the vanguard, organizes technical backbone forces, builds a technical, innovative and collaborative team, organizes Jiangsu Nuclear Power, China Nuclear Consulting and Jiangsu Power Construction to eva luate, plan and promote phased array new technology research, and tracks implementation through special meetings and regular engineering meetings. To promote the completion of thick wall pipeline phased array inspection comparative test, feasibility analysis, expert review meeting, design changes and field testing and other work.

The smooth implementation of phased array inspection of thick wall tube in Unit 7 and 8 of Tianwan Nuclear Power Plant has further improved the application range and technical level of phased array inspection in Tianwan nuclear power plant. It has reduced the working pressure of inspection workers, reduced the risk of radiation protection, and improved the inspection efficiency of thick wall pipes. This breakthrough is a vivid embodiment of the development of new quality productivity and continuous exploration and application of cutting-edge technologies of Tianwan Project Department, which provides a strong guarantee for the smooth implementation of engineering construction and accumulated valuable experience for the application of innovative technologies in nuclear power.