Common Defects of Steam Turbine Low-pressure Rotor Blade in Nuclear Power Plant and Their Inspection Techniques

Water erosion damage,resonance vibration,fatigue fracture and other design or manufacture defects may occur on the steam turbine low-pressure rotor blade,which is one of the most important rotational equipments used in the nuclear power plants.This article analyzes the common defects of the blades and their causes,introduces ultrasonic phased array,fluorescent magnetic particle inspection and other non-destructive tests,which provides good references for the plants owners to improve the quality monitors of the steam turbine blade.