Destructive Testing

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Non Destructive Testing


MPI – Magnetic Particle Inspection


Magnetic particle inspection is a discipline of non-destructive testing that utilizes the ferromagnetic properties of the material under test allowing any surface breaking or slightly sub-surface defect to be apparent visually.

Two methods are commonly utilised.

Contrast: Where a white background is used with coloured ferromagnetic particles suspended in light oil.

Ultra-Violet: Used mainly on machined finished items and sub-sea where no contrast background is required and the test area is viewed in darkened area using an Ultra-Violet light source.

The Electromagnets (Yokes) Core-IRM use are; light weight (3.5 kg) and have articulating legs which allows positioning on regular and irregular shaped items. With single-handed operation, it is well suited to the offshore environment, and can be used on all Ferromagnetic materials for onsite inspection and repair operations.

By carrying out MPI on relevant materials and equipment periodically, catastrophic failure can prevented reducing risk to personnel and assets. MPI can also be carried post repair to verify the integrity of the repaired area.

All our inspectors are experienced and qualified to complete this task


Dye Pen – Dye Penetrant Inspection


Our inspection teams are experienced using this method, are extremely competent and are qualified to internationally recognised standards

Dye Penetrant inspection is an inspection discipline is generally used on non-magnetic materials, where M.P.I. cannot be used. Only surface breaking defects can be found by utilising reverse capillary action process.

See photograph shown to the right.

After the surface is cleaned, penetrant is applied and allowed to “soak” for up to 30 minutes, the penetrant is then removed using a solvent soaked lint free cloth, allowed to dry then Developer is applied to the test area. Any surface breaking defects will contain Penetrant which will be “Blotted“ out by the developer showing a definite indication which will be fully assessed after approximately 20 minutes.

With this method we can locate any defects in the test area, thus reducing the risk to personnel and company assets


Eddy Current Inspection


Eddy Current Inspection is a discipline of N.D.T. that put simply utilizes magnetic fields induced into conductive materials in the form of eddy currents that penetrate the material/test subject to a shallow depth and is able to locate possible defects and indications / imperfections in the test area.


In the diagram to the right, the method of eddy current is briefly explained and the picture below shows this type of NDT being executed via rope access


The main advantage of Eddy Current is that;


The inspection is able to be carried out with minimal surface preparation and the surface coating (paint) can remain on the test area. If a suspect indication is found the coating can be removed only at the indication area where M.P.I. is carried out to confirm or discount the indication.


At Core-IRM our skilled technicians are experienced in this method, have internationally recognized qualifications and onsite experience.




UT Flaw – Ultrasonic Flaw Detection


Ultrasonic Flaw Detection is a discipline of NDT that utilizes ultrasonic sound waves that are introduced into a material and by the response on the screen location, size and orientation of defects or anomalies can be assessed.

This discipline is used to locate and assess volumetric and planer type defects in materials and welds.




Our skilled operators are experienced in this discipline and are highly skilled with internationally recognized certification ensuring the inspection is carried out to the client’s procedures and specification.





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