Salem NDT eddy current testing machines- Some Insights

Salem NDT eddy current testing machines- Some Insights

Non-destructive testing (NDT) is the application of non-destructive methods for the inspection of parts used within the construction and engineering sectors. Non-destructive methods allow for the analysis of integrity without the degradation of the part under inspection. This becomes relevant when parts are undergoing high stresses or are in use within harsh environments. You may find more details about this at SalemNDT eddy current testing machines.

Defects such as corrosion, cracking, thinning and fouling can all be determined without having to break apart or risk damaging the material in any way. This is obviously beneficial for the monitoring of condition, especially for parts that would be expensive to replace. There is also application within industries such as aerospace, which have very sensitive tolerances when it comes to condition of parts. Where one crack could mean the difference between success and failure of a billion pound project, NDT becomes very relevant.

Various technologies can be used for inspection, though a large percentage of the techniques available center around similar principles, albeit used in very different ways. Ultrasound and electromagnetism are two of the most widely applied principles; ultrasound can be used for the inspection of tubes, via techniques such as IRIS (Internal Rotary Inspection System) as well as thickness checking via ultrasonic spot checking.

Whereas electromagnetism rears its head for the inspection of welds via eddy current testing, as well as for tube inspection as an alternative to IRIS.

Some of the most common uses of NDT are in industries such as power generation, oil and gas, petrochemical, offshore, bulk storage and process related industries. Boiler tubes, condenser tubes, storage tanks and pipelines are all common areas of major inspection, usually due to regulations put in place by local jurisdictions.

The use of NDT requires qualified technicians, and there are various certifications available, often requiring the passing of a theory component, a practical component, and a certain period of work experience before a full certificate is awarded. Certificates also require renewal at various intervals to ensure technician’s skills remain current.

Overall NDT provides an effective way for many industries to maintain safety, understand what’s going on within their systems, and understand the risks developing so they can take action before accidents or major failures occur.

NDT is an on-going endeavor, and every inspection will present new information as to how previous changes may have affected the current effects of stresses on equipment. Despite its cost, generally the cost of accidents and downtime dwarf the modest costs of regular NDT inspection many times over, often by orders of magnitude when major accidents occur.