Tube Testing  (ECT, MFL, RFT, IRIS)

Specialized Inspections Co. Ltd. provides tube testing services for ferrous and non-ferrous tubes using the MultiScan MS5800 for Tube Inspection.




The MultiScan MS5800 is a multi-technology system offering these technologies:

· Eddy Current

· Magnetic Flux Leakage

· Remote Field

· IRIS Ultrasound





Tube Inspection with ECT


· Condensers

· Feedwater heaters

· Heat exchangers




Air conditioners Eddy current testing is a noncontact method for the inspection of non ferromagnetic tubing. This technique is suitable for the detection and sizing of metal discontinuities such as corrosion, erosion, wear, pitting, baffle cuts, wall losses, and cracks in nonferrous materials.




Probes used to perform eddy current inspections are made with a copper wire wound to form a coil. The coil shape can vary to better suit specific applications.

a -         The alternating current flowing through the coil at a chosen frequency generates a magnetic              field around the coil.

b -         When the coil is placed close to an electrically conductive material, eddy current is induced              in the material.

c -         If a flaw in the conductive material disturbs the eddy current circulation, the magnetic              coupling with the probe is changed and a defect signal can be read by measuring the coil              impedance variation.







MultiScan MS-5800E Key Features


·        4 simultaneous frequencies per input This feature allows inspection speed up to 2 m/s with

             4 absolute and 4 differential frequencies without signal distortion.


·        Electronic probe balancing No separate external reference probe is required for absolute              channel operation.


·        4 ECT inputs and up to 64 multiplexed channels The MS-5800E can support a large number              of ECT channels to perform array-probe inspection. Compared to single channel inspection,              the array-probe technology allows faster and easier surface coverage.





Tube Inspection with Remote Field and Magnetic Flux Leakage




· Boilers

· Feedwater heaters

· Air coolers

· Carbon steel heat exchangers






Remote field (RFT) is used for the inspection of ferromagnetic tubes, such as carbon steel and ferritic stainless steel. This inspection technique detects and sizes wall thinning caused by corrosion, erosion, wear, pitting, and baffle cuts. R/D Tech® remote field equipment has been used successfully on several applications: tube and shell heat exchangers, feedwater heaters, boiler tubes, and buried pipes.






Magnetic flux leakage (MFL) is a fast inspection technique, suitable for wall-loss measurement and detection of sharp defects, such as pitting, grooving, and circumferential cracks. MFL is effective for aluminum-finned carbon steel tubes, because the magnetic field is mostly unaffected by the presence of such fins.

MultiScan MS-5800R RFT and MFL Key Features


·        RFT with up to four different frequencies and real-time mixes This feature allows more              flexibility for mixing and defect validation. The detection and sizing of flaws at the support              plate becomes easier with multifrequency inspections and dual-driver operations.


·        RFT with frequencies ranging from 20 Hz to 250 kHz The higher frequency available with              the MS5800R extends the RFT inspection to thinner materials with lower permeability,

             such as the stainless steel 400 series and other ferromagnetic alloys.


·        High-speed MFL inspection The MFL technique is a good complement to RFT inspection.

             R/D Tech® high-saturation probes offer very good performance in tubes ranging from 0.75              in. to 1.5 in. in diameter.



Tube Inspection with IRIS for Ferrous and Nonferrous Materials
















· Boilers                     

· Feedwater heaters

· Air coolers






Heat exchangers The IRIS ultrasonic option is used for the inspection of a wide range of materials, including ferrous, nonferrous, and nonmetallic tubing. This technique allows detection and sizing of wall loss as the result of corrosion, erosion, wear, pitting, cracking, and baffle cuts. R/D Tech® digital IRIS inspection technology is used extensively as a backup technique for remote field, magnetic flux leakage, and eddy current inspections.




Multi Scan MS-5800U IRIS Key Features



·        Setup wizard Simplifies equipment calibration for different tube diameters and materials.

             The wizard also generates the reporting code for the inspection.


·        Real-time gain and gate controls UT settings can be modified during the C-scan acquisition              to quickly optimize signal detection.


·        Real-time and continuous color C-scans No missed flaws caused by operator fatigue with

             C-scan displays. Enhance the quality and appearance of your reports by including color              maps and cross-section views of defects.

             Full tube length recording capability Analyze data offline and assess damages with the              customer.