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Non Destructiive Testing

NDT Testing Services

Structure Advantage Ltd is a major provider of laboratory and site based non-destructive testing and inspection services, within the Kenya and Africa. We offer a degree of expertise and product knowledge to all industry sectors and can also offer a rapid response for advice by qualified and professional personnel.

Rig Inspections

Services offered but not limited to:

  • Structure Advantage inspects Drill Pipe,
  • Bottom Hole Assembly Components,
  • Various Rig Components and Casing according to T.H. Hill Standard DS-1, API RP 7G, API 5CT and/or client specifications.

Structure Advantage personnel are equipped to cover every step of the inspection process which falls under the following:

  • Magnetic Particle Inspection (MPI),
  • Electro Magnetic Inspection (EMI),
  • Visual Testing,
  • UT Thickness Gauging,
  • UT Flaw Detection,
  • Penetrant Testing (PT) and Dimensional.

Other services include:

  • External Cleaning
  • Refacing
  • Hardbanding

Ultrasonic Testing (RT)

Ultrasonic Testing uses high frequency sound energy to conduct examinations and make measurements. Ultrasonic inspection can be used for flaw detection/evaluation, dimensional measurements, material characterization. We at Structure Advantage perform UT on steel, other metals, alloys and concrete in various industries including aerospace, automotive and other transportation sectors. Our lab technicians are certified and qualified for Ultrasonic Testing and specialize in high frequency inspection of all above mentioned.

Radiographic Testing (RT)

Radiographic Testing remains the best known and most widely used method of non-destructive testing. Radiography provides a reliable method of detecting flaws in a wide range of product types including welds, castings, structures and composites. It is employed predominantly in the fabricating and casting industries for quality control, and will reveal defects such as inclusions, cracks and porosity.
Structure Advantage offer a wide range of radiographic inspection services relating to Riveted seams where cracking may be suspected, Butt welds in chains and lifting gear, Welds in pressure vessels, pipelines and structures, Composite materials and Castings in the ‘as cast’ or machined condition.

Magnetic Particle Inspection (MPI)

Magnetic Particle Inspection main advantage is its simplicity making it a very cost effective and efficient method of testing ferromagnetic components for defective areas.
Inspections can be carried out in our laboratory using our current flow / magnetic flow fixed bench units or on-site with the aid of permanent magnets and electro magnets.
The detecting medium can either be liquid containing fluorescent indicators to provide a strong contrast to the surrounding material or a dry powder.

At Structure Advantage we strive to deliver MPI services in surface cracks in welded assemblies, fine defects in the surface of castings for use in aerospace, automotive, oil & gas and medical industries, fatigue cracks in chains and lifting gear, fatigue cracks that have developed in service and heat treatment cracks in components.

Penetrant Testing (PT)

Suitable for both ferrous and non-ferrous materials but is particularly useful when components manufactured from non-ferrous materials and austenitic steels are to be examined and the more discriminating magnetic particle test cannot be employed. Just as in the case of other NDT techniques, PT can be used in site or in a laboratory application. We use red dye that is visible under normal lighting conditions or a fluorescent dye which requires the use of an ultraviolet lamp. PT is particularly useful in the laboratory as a cost effective method of testing small machined components in large batch quantities. Services in Structure Advantage include the detection of outcropping defects in ferrous, non-ferrous castings, forgings and fabrications for use in aerospace, automotive, oil & gas and medical industries, Fatigue cracks that have developed in service, Fatigue cracks in chains and lifting gear and Riveted seams for the detection of leaks.

Visual Testing (VT)

Visual testing or inspection offers a wide range of options to secure proper system or product quality through the detection of surface flaws and discontinuities in test pieces. The effectiveness of VT can be enhanced through the aid of tools such as fiberscopes and umbilical tethered cameras. Structure Advantage carry out visual testing via the use of fiberscopes which is ideal for insertion into multiple-bend pipes. The insertion tube flexibility changes continuously-being highly flexible at the tip and rigid at the control section. As a result, these fiberscopes can easily be passed through bends and elbows. Past projects have given us experience in testing inside plant piping, inside machines such as motors and boilers, inside engines of vehicles, aircraft, etc and into inaccessible areas within steel towers, bridges and buildings.

Eddy Current

Eddy current inspections detect cracks in a block of metal using a coil of wire wrapped around a piece of iron to generate the magnetic field that caused the eddy currents to form in the metal. The magnetic field that is generated by the eddy currents can be detected using this same probe. We can monitor the magnetic field being produced by these eddy currents through use of an eddyscope. A change in the magnetic field tells us that some sort of defect in the material has been detected. The main advantages of this method of testing is the portability of the equipment making it ideal for on-site applications with the added benefit that it is not necessary to remove any surface paint. Structure Advantage undertakes testing of surface and near surface flaw detection, metal sorting by grade, hardness and coating thickness measurement.

Leak Testing

Leak testing is a non destructive examination method which is used for detection and localisation of leaks and for measurement of leakage in systems or objects which are under vacuum or pressure. It is necessary to determine if the examination is to ascertain whether leaks are present or if the examination is to determine the location of a leak. Structure Advantage can help you determine the leak rate which can be tolerated, as no objects are 100% tight through application of either “Vacuum method" and the "Overpressure method. In leak testing a pressure difference between the outer and the inner side of the object to be examined is produced. Subsequently the amount of gas or liquid which is passing through a leak is measured.