Transducer Abrasion test results in support of ultrasonic inspection of Double Shell Tanks (DST)

Identification of questionable ultrasonic data on 241-AN-105 lead to suggestions that the ultrasonic transducers were not properly installed causing excessive wear. This report documents the testing to validate the source of the improper data as being transducer wear. The results of the testing indicated that the wear influenced the data results and subsequently the analysis of the corrosion on the subject DST.