AUI - A Cost-effective Alternative to Radiography!

摘要

While radiography (RT) was the original choice for weld inspections, it is now being challenged very strongly by Automated Ultrasonic Testing (AUT). Conveniently, the ASME Pressure Vessel and piping Code committee has published a series of AUT Mandatory Appendices, which makes AUT considerably easier to perform. Three new Mandatory AUT Appendices were released in July 2010, which cover similar ground to ASME Code Case 2235 - without the acceptance criteria. The first Appendix covers performing a workmanship criteria inspection. The second Appendix covers performing a Fracture Mechanics orECA-type inspection The third Appendix covers procedure qualification, i.e. a performance Demonstration. This also describes manufacture of the demonstration block, and testing procedures, detection requirements and sizing. There are also two new Mandatory Appendices on phased arrays - manual raster scanning and encoded linear scanning.