An immersion pulse-echo technique is used. The ultrasonic transducer is housed in a turbine head with a rotating 45° mirror. The turbine assembly is centred in the tube axis. These pulses are emitted parallel to the tube axis and are reflected by the 45° mirror so that they are directed radially into the tube wall. The reflections from both inner and outer tube wall follow the same path to the transducer. The time interval between the first wall echo (front) and second wall echo (back) is the measure of wall thickness. As the mirror rotates, the ultrasonic beam sweeps the entire circumference of the tube wall.

                                                                                                                             Principle of IRIS System

Ferrous and non ferrous materials
Tube range from 10 mm internal diameter
Tubes ferreux et non ferreux
Uses rotating pulse-echo technique to scan 100% of tube wall area
Data presented in B and interactive C scan displays with tube sheet
   mapping software
Data files are color thickness coded and interactive
Data saving
 

 Ultrasonic Ultima IRIS System Applications :

 Used for boiler tubes, heat exchangers, air coolers, feed water heaters, condensers

 Finding of flaws [OD or ID]: corrosion, erosion, wall thinning,…

 Following of flaws evolution during the life of the tube

  ULTRASONIC TUBING INSPECTION SYSTEM " TUBESCAN "

TUBESCAN^® is an ultrasonic internal tubing inspection with mirror, fully automatic and designed to quickly obtain a C-SCAN mapping of small to middle diameter tubes.  It can be used for  boiler, heat exchanger, condensers.... tubes.

For more information bout TUBESCAN^® system , click here.
 

MULTIFREQUECY EDDY CURRENT TUBING inspection

Heat exchanger tubing exam with eddy current is performed with an internal bobbin. The principle is to study the impedance variation of the coils inside a non-ferromagnetic tube. The injection of multiple frequencies allows by using a mixing to eliminate unwanted signal from structure, and so to detect and evaluate the degradation under the support.
                                                                                                                             Eddy Current axial probe
 

 Multifrequency  Eddy Current method Advantages:

   Flexible or heady-duty axial probe
   Rotating Pancake Coil,
   Analysis software with location of the defect along the tube
   Final report with mapping of inspection
   Data saving
   Calibration standard with metrology certificate
 

 Multifrequency  Eddy Current Applications:

  Periodic tubing exam for heat exchanger, fin-fan cooling buddle
 Flaw research [OD or ID]: cracks, corrosion, erosion, wall thinning,…
 Following of flaw evolution during the life of the tube

The Remote Field Testing [RFT] is using for ferromagnetic (carbon steel) tubing inspection. The specific probe use coils for the exciter and for the receiver far to 2xOD of the tube. The principle is based on the magnetic field variation study of the coils from the exciter to the receiver along the tube. The display in absolute and differential mode allows to find slow and pitting defect, like erosion and corrosion.
                                                                                                                       Remote Field Eddy Current  probe

 Remote Field  Eddy Current Advantages:

   Straight or U-bend tubing inspection, ID from 10 to 100mm
   Limit of detection : 20% of wall thinning
   Flexible or heady-duty axial probe
   Analysis software with location of the defect along the tub
   Final report with mapping of inspection
   Data saving
   Calibration standard with metrology certificate
   No necessity of HP cleaning
   High rate of control
   Possibility to associate IRIS method to quantify the wall thinning