L51493 Sizing of Girth Weld Defects Using Focused Ultrasonic Beams Phases I and II

A large amount of inspection data was generated from the inspection of 36 weld defects included in Phases I and II of PRCI Project number PR-166-177. For convenience of reporting and because most readers till not require it, this data was largely left out of the final report. However, because the data generated may be of interest to some and because it is likely to have direct relevance to projects planned for the future it was considered expedient to formally record this data. Results are reported in two sections. Section 1 containing results from Phase I and Section 2 the results from Phase II. All information including inspector’s comments, multiple A-scans and photographs of exposed defects (where available) are included for each defect under its own sub section. Describes experimental work to investigate the use of focused ultrasonic beams for sizing girth weld defects in large diameter pipe. Transducer and lens design are discussed. A comparison of results of destructive examinations is given.