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Fabrication of Flawed Blocks for Ultrasonic Testing in Lieu of Radiographic Testing

Construction codes and standards sometimes, with restrictions, permit substituting ultrasonic testing for radiographic testing. This Back to Basics discusses requirements for creating flawed welds to be used for such ultrasonic testing. The minimum number of flaws, and their types, locations and sizes, are discussed, along with concepts important in fabricating a flawed block standard.

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