Not all of the inclusions and back wall reflections are discernable when evaluating through thickness conditions of plate, pipe wall and aboveground storage tank floors.  The application of B-Scan technology has improved the ability to make an assessment of pitting, inclusions and wall loss due to corrosion and erosion. 

 

B-Scan presentation of ultrasonic evaluation of an inspected area of plate or pipe essentially, converts all of the A-Scan recordings and compiles them into a single path through thickness profile of the areas of interest.  This side view or profile gives the inspector the capability of defining pitting and corrosive conditions more accurately.

 

Pitting configurations do not always lend themselves to accurate wall loss dimensions with conventional A-Scan technology.  Thus, a thickness unit reading back-wall reflection has the potential of being fooled into balancing or averaging the multiple readings on and near a pitted area of corrosion.

 

B-Scan profiles can be secured rapidly and in real time.  The system has the ability to apply a water-couplant through the carriage device that holds the transducer.  This combination of technology allows for a very quick scanning technique to be deployed.  Additionally, the carriage has the capability to encode the distance traveled relative to the thickness measured.   This allows the profile of the work piece to be accurately detailed and allows for repeatability of inspection.

 

REAL TIME IMAGING DEMO

Owensby & Kritikos, Inc. can handle all of your B-Scan related testing needs.  Contact us now to discuss your specific situation.  Call us at 1-800-749-3122 or e-mail us at inspections@ok-insp.com.