Application of Ultrasonic Simulation Technology in Technical Justification of In-Service Inspection of Nuclear Power Plant
Ultrasonic modelling and simulation are widely used in inspection qualification by industrial non-destructive test. Due to limitation of inspection conditions and radiation environment inside the nuclear power plant, it is useful to study the application of ultrasonic simulation technology to in-service inspection in nuclear power plant. Simulation can be used to demonstrate the inspection capability and determine the inspection scope and inaccessible area. Meanwhile for the in-service inspection of nuclear power plant, application of ultrasonic simulation technology can enhance the effectiveness while site inspection and reduce the cost associated with inspector training. This paper firstly reviews the application of ultrasonic modelling in inspection qualification in the world. Then according to the actual dimensions of nozzle to shell weld of one reactor pressure vessel, simulation is used to help determine the inspection parameter. Another example is for dissimilar metal weld in nuclear plant, the coarse grain of material and energy loss as sound transmits across different material interface result in lower signal-to-noise rate; the simulation technology is utilized to compare the inspection validity and limit of different probe. Both simulation results indicate that ultrasonic simulation is useful for inspection parameters and technical justification for in-service inspection, especially for extension of applicability to more complex configurations and to enhance its reliability.
Ultrasonic simulation technical justification in-service inspection dissimilar metal weld
Huaidong CHEN Ming LI Jinhong LIU Yiqing LI
Suzhou Nuclear Power Research Institute, Suzhou 215004, P.R.China.2. China Nuclear Power Technology China Nuclear Power Technology Research Institute, Shenzhen 518031, P.R.China
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
928-934
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）