Eddy Current Testing (ECT) is a high‑speed electromagnetic inspection method used primarily for non‑ferromagnetic tubes. It works by inducing eddy currents in the tube wall and measuring signal changes caused by discontinuities.

ECT Detects:
ID & OD corrosion
Pitting
Cracks
Fretting and wear
General wall thinning

Remote Field Eddy Current Testing is specifically designed for ferromagnetic tubing, such as carbon steel. Conventional ECT is limited on ferromagnetic materials, whereas RFECT allows full wall thickness inspection.

RFECT Detects:
Internal and external wall loss
General corrosion & erosion
Baffle and support‑plate related damage

Magnetic Flux Leakage Testing is used for inspecting ferromagnetic tubes, especially finned tubes. The method detects leakage in magnetic flux caused by metal loss or sharp defects.

MFL Detects:
Wall loss
Pitting
Grooving
Circumferential cracking

Near Field Testing (NFT) is a specialized eddy current‑based technique developed for fin‑fan carbon steel tubes. It focuses on detecting internal degradation while remaining unaffected by external fins.

NFT Detects:
Internal corrosion
Erosion
Pitting

IRIS is an ultrasonic tube inspection technique suitable for both ferromagnetic and non‑ferromagnetic tubes. A rotating mirror produces a helical scan, enabling precise wall thickness measurement.

IRIS Detects:
Wall thinning
Corrosion and erosion
Pitting and fretting
Tube wear and cracking

Very fast inspection speed
High sensitivity to small defects
Discriminates between ID and OD defects
Ideal for condensers and heat exchangers

Equal sensitivity to ID and OD defects
Suitable for carbon steel tubes
Effective beneath tube supports

Excellent for finned carbon steel tubes
Effective even with external fins present
Strong backup to RFECT inspections

Very fast inspection speed
Unaffected by fins, tube sheets, or support plates
Ideal for fin‑fan heat exchangers

Accurate remaining wall thickness measurement
High‑resolution ultrasonic data
Reliable sizing of metal loss

Based on tube material, diameter, and service conditions.

Mechanical or hydro‑jet cleaning as required.

Using ECT, RFECT, MFLT, NFT, or IRIS systems..

Defect identification, sizing, and classification.

Digital reports with tube maps and condition assessment.