In service inspection methods applied to CANDU fuel channels

Reviewed are the nondestructive evaluation (NDE) methods and equipment currently used to evaluate CANDU Nuclear Reactor Fuel Channels. While most of the inspection techniques are applied to fuel channels during a reactor shutdown, some, such as feeder connection and closure leak location using acoustic emission, can be performed during on-power operation. Current research into other methods that can be performed during on-power operation are briefly described. These methods include the use of radiation and temperature resistant electromagnetic acoustic transducers (EMATS) for pressure tube flaw detection and eddy current coils for spacer location. (author). 6 figs., 1 tab., 22 refs