Spectra NDT Services


Industry adopted an inspection philosophy to aid early and timeous detection of flaws/defects that could otherwise lead to potential catastrophic failure. To this end, Inspections have been subjected to perpetual evolution to meet and improve methodologies to sustain the intended philosophy.

Current trends have witnessed how inspections impacted a multitude of platforms, namely:-

Statistical data analysis;
Flaw monitoring;
Corrosion monitoring;
Detection of inter and transgranular stress corrosion cracking with accurate dispositioning thereof and many more.

Inspection intervals are generally divided in the following categories, namely:-

Pre and Post manufacturing;
Pre and Post stress relief;
Pre and Post service and
Post failure – ALL subject to our clients request.

Browse through the core services below to find out more information about the various services available

A process utilising flux leakage through direct or alternating currents. Good for detection of flaws open to the surface. Used on ferromagnetic materials only.

This process, by means of capillary action allows the penetrant to pentrate the flaw. The process is then reversed with blotting; in doing so, the flaw is revealed. Best used on smooth surfaces.

Sound is directed into the material; the returning energy is analysed to establish the presence or absence of subsurface flaws.

Ultrasonic Inspections by Spectra Inspection Services -Non-Destructive testing (NDT) in South Africa

X-rays or Gamma rays are used to detect subsurface flaws. The image of the specimen is transposed onto film. Used on most materials.

With phased array, the probe is sequentially pulsed to produce an array of angles. Good for both detection and sizing.

Phased Array Inspections (PA) Spectra Non-Destructive testing (NDT)

A method whereby the individual material composition is determined in order to classify/identify types of metallic materials.

A process conducted in order to remove / reduce residual magnetism left in ferromagnetic materials following their subjection to high density magnetic fields.

Fixed scanning pitch and catch methodology utilising the diffracted signal. Good for flaw detection and best for flaw sizing.

By measuring the potential drop across two points, the flaw depth is determined.

Used to detect surface and subsurface flaws in conductive materials. Can also be used to measure coating thickness.

Method to detect heat variation from a distance.

A process of inspecting welding, ensuring compliance to relevant codes. This function often includes validation/ compilation of Procedures Qualification Records (PQR) Welders Qualification Records (WQR) and Welding Procedure Specification.

As per procedural requirements, the Level III’s function will include the following:

  • Ensure inspection techniques / procedures are compliant,
  • Subcontractors and personnel meet the code requirements,
  • Authorisation of personnel,
  • Perform internal /external surveillance audits / assessments,
  • Oversee training,
  • Validate technique selections,
  • Evaluation of NDE data.

A process that enables the surface of the specimen to be replicated, thereafter viewed under a microscope to evaluate the microstructure.

CCTV Inspection is a method where by a camera is inserted into a pipeline or an inaccessible area of a test piece or component  in order to inspect for flaws, corrosion or blockages to name a few.

Spectra Ndt utilizes a variety of tools at our disposal in the development of custom equipment and inspection techniques (Beam Tool, SolidWorks and machining facilities to name a few)

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