TOFD 8 inch Pipe Scan

In service scanning of welds using Time Of Flight Diffraction (TOFD) to identify any areas of defect including corrosion or erosion.

[@husseinalwan3028]

ask about , ERVW blocks (small, medium, and large block) , is coverd the piping diameter range from 3 inch to 20 inch and can we used these blocks for wedge delay and velocity calibration ??