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Development of Automatic Ultrasonic Testing Techniques of Low Pressure Turbine Blade of Nuclear Power Plants  

Yang, Seung-Han (Korea Electric Power Research Institute)
Lee, Jeong-Bin (Korea Electric Power Research Institute)
Kim, Young-Ho (Korea Electric Power Research Institute)
Yoon, Byung-Sik (Korea Electric Power Research Institute)
Kim, Yong-Sik (Korea Electric Power Research Institute)
Publication Information
Journal of the Korean Society for Nondestructive Testing / v.24, no.4, 2004 , pp. 371-377 More about this Journal
Abstract
As the turbine running duration in nuclear power plants increases, cracks have been found in the pin finger type blade root area. The nondestructive examination for the blade root area has been carried out by manual ultrasonic examination during the overhaul period, but because of necessity to improve the reliability, we developed an automatic ultrasonic examination system and technique. To demonstrate the performance of the developed automatic ultrasonic examination system, low pressure turbine blades in the 2nd and 3rd stages of nuclear power plants were examined using the developed system. Its applicability nuclear power plant turbine roots of various types was also confirmed.
Keywords
automatic ultrasonic testing; low pressure turbine blade;
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  • Reference
1 'Investigation into the Consequences of the Failure of a Turbine-Generator at Hinckley Point 'A' power station,' Proceedings: Institute of mechanical engineers, pp. 379-390, (1972)
2 'Round-Robin Turbine Blade Attachment Inspection Program,' EPRI-TR-106749, (1997)
3 'Inspection of Turbine Disk Blade Attachment Guide,' EPRI TR-104026, (1994)
4 'Guide to Optimized Nuclear Low-Pressure Turbine Rotor Inspection,' EPRI-TR-107480, (1997)
5 'LP Rotor Rim-Attachment Cracking Survey of Utility Experience,' EPRI Report TR-107088, (1997)
6 'Steam Turbine Disk Cracking Experience,' EPRI Report NP-2429, Vol. 1-7 (1982)