Abstract: A method of monitoring a portion of an equipment under pressure implementing a control station to control an ultrasonic non-destructive testing device through a remote network, includes: the control station sends a first measurement request to the non-destructive testing device; the control station receives a first plurality of measurement data from the non-destructive testing device, constructs a first mapping of the portion of the structure from the data; sends a second measurement request to the non-destructive testing device, receives a second plurality of measurement data from the non-destructive testing device, constructs a second mapping of the portion of the structure, from the second plurality of measurement data, and compares the first mapping and the second mapping.