INTERNAL ROTARY INSPECTION SYSTEM (IRIS)



IXAR has invested in Internal rotary inspection system (IRIS) ultrasonic test method which is employed for testing of pipes and tubes in boilers, heat ex-changers and fin-fan tubes. The IRIS probe is inserted into a tube that is flooded with water, and the probe is pulled out slowly as the data is displayed and recorded. The ultrasonic beam allows detection of metal loss from the inside and outside of the tube wall. The IRIS probe consists of a rotating mirror that directs the ultrasonic beam into the tube wall. The mirror is driven by a small turbine that is rotated by water pressure.

 

As the probe is pulled the spinning motion of the mirror results in a helical scan path. The IRIS probe must be moved very slowly (approximately 2.5 cm/s) to produce very accurate results (wall thickness measurements typically accurate to within 0.13 mm). Not sensitive to cracks aligned with tube radius. Compared to conventional ultrasonic testing or eddy current testing, Internal rotary inspection system (IRIS) ultrasonic test instruments and probes are complex and expensive and requires highly trained, skilled and experienced technicians.