TY - SER AU - Papavinasam,Sankara AU - Doiron,Alex AU - Winston Revie,R. TI - Abnormal ultrasonic data: Internal pit growth or measurement error? PY - 2008/// CY - PB - N2 - Transcripción del resumen del autor. Internal pits are routinely monitored using a number of externally mounted nonintrusive probes, including ultrasonic thickness (UT) measurement. This article presents the analysis of the root cause of an abnormal signal in the UT measurement of a pipeline ER -