Application of Ultrasonic Guided Waves for CANDU Piping Inspection

Computer modeling and experimental testing will be conducted to examine and verify the reliability of ultrasonic guided wave techniques for detecting wall thinning and cracking in feeder pipes in CANDU nuclear reactors. Bracelets holding 8 and 16 ultrasonic transducers will be developed. These bracelets are attached to the pipe to produce guided waves which propagate along the pipe. A reflected wave is generated when guide waves encounter a defect (e.g., cracking). The defect location can be determined knowing the velocity of propagation of the guide wave and the arrival time of the reflected wave. The benefits for the partner from this project include a reliable non-destructive technique for piping inspection over long distances from a single bracelet position, particularly where access and clearances make difficult the pipe inspection. It will also contribute to a reduction in exposure times to ionising radiation to the inspection staff, and safety of plant personnel.

Faculty Supervisor:

Giovanni Cascante;Carl Haas

Student:

Partner:

Kinectrics Inc.

Discipline:

Engineering

Sector:

Energy and Utilities; Clean Technology; Sustainability & the Environment

University:

University of Waterloo

Program: