Hello. I am working on a Structural Materials class project in which I would like to review Non-Destructive Testing (NDT) methods used at a nuclear power plant. My focus is on nuclear reactors Gen II and Gen III (+). I researched the topic on the internet and found reference to different techniques. I'd appreciate your input on which NDT methods are actually being used and/or preferred by the professionals in the field to monitor structural integrity of a nuclear reactor components and why.