IRIS is a semi-automated ultrasonic technique for the examination of both ferrous and non-ferrous tubing for isolated pitting, corrosion, and gradual wall loss. A rapidly rotating mirror directs an ultrasonic beam from a transducer which is reflected 90 degrees to the water-filled internal tube wall. The beam is reflected back towards the equipment at which point it can be processed and quantified, calculating the wall thickness and revealing any flaws or damage.

By design, it can be used for the examination of normally inaccessible boiler generating sections, heat exchangers, air coolers, or other small diameter pipe or tubing that can be accessed from at least one end and be filled or flooded with water. It was originally developed simply for the inspection of air coolers, but found more use as time went on.

The size of the average tube being examined ranges from 1.5" to 3" ID, but examinations can be performed on tubes as small as 3/8" ID and up to 12" with special probes and fixturing.

The system provides 100% coverage of scanned areas and presents real-time B-scan presentation of the subject. Saved data can also be presented in colorized C-scan images as well as numerical format for wall thickness values. This combination of data presentation enables the technician to determine both the location, (ID/OD, distance from end of tube) and type (wear, pitting, general corrosion) of anomaly detected.

IRIS system provides for rapid inspection of large volumes of tubes providing the client with the information needed for operating and/or maintenance decisions to be made. Contact us to learn more about Hi-Tech Testing’s IRIS services.

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