Remote field is an electromagnetic testing technique used primarily for the in-service, baseline, or QC inspection of ferromagnetic tubing/piping.

Eddy Current testing is based on inducing electrical currents (eddy currents) in electrically conductive materials.  Any changes in geometry, material, or discontinuities will disrupt the flow of the eddy currents.  These disruptions will produce a signal revealing cracks, pits, thinning, and other anomalies.

XRFT is an electromagnetic technique that utilizes the Remote Field phenomena to create a naturally balanced system by using an external reference to reduce the effects of unwanted noise.  Used primarily for in-service ferromagnetic tube, pipe or plate inspections that otherwise produce a greater amount of noise from a conventional remote field test (such as aluminum fins in air cooler fin fan applications).

IRIS is an ultrasonic pulse-echo technique with a B-Scan representation (cross sectional display), used to determine wall thickness, degradation type, and identification of defect orientation.  IRIS can be performed in many different types of piping and tubing and is able to test both ferrous and non-ferrous materials that transmit sound and energy.

All the technologies used in ID tube inspections are an applied science based on the laws of physics, but setting the instrument parameters and interpreting the data requires three to five years of experience, and considerable hours of training.  A qualified technician is knowledgeable and understands processes, degradation mechanisms, and is skilled at defect characterization.  This combination delivers a higher quality inspection and meets customers expectations.

Guided Current Testing is a non-destructive technique that utilizes the basic laws of electricity to inundate the conductive material being inspected with AC or DC current.  Any changes in the geometry or material will disrupt the current and produce a signal.  Changes to the flow of current can be measured through sensors attached to the test piece.   Test materials can consist of flat plate or tubular products such as tubing and piping.

There are several widely used methods used to clean the ID of tubes or pipes. Chemical cleaning requires advanced knowledge of the type and amount of scale or deposit to be removed (requires disposals of the chemicals which can be hazardous to the environment).  Hydrolancing utilizes high pressure water pumped through a flexible hose or rigid line sprayed through a nozzle jet in order to knock off the scale or deposit on the tube or pipe.