Rope Access NDT provides a practical approach to all Inspection Techniques. Our very experienced technicians are totally familiar with all aspects of the principal Non Destructive Testing (NDT).

​

Our Technicians are fully conversant with computerized reporting systems and data collection. Our Technicians are totally adept at interpreting P&IDs and construction drawings and expert in the generation of inspection reports.

​

Non-Destructive Testing or (NDT) is a wide group of analysis techniques used in science and industry to evaluate the properties of a material, component or system without causing damage.

​

The terms Non-Destructive Examination (NDE), Non-Destructive Inspection (NDI), are also commonly used to describe this technology. Because NDT does not permanently alter the article being inspected, it is a highly valued technique that can save both money and time in product evaluation, troubleshooting and research. Common NDT methods include Ultrasonic, Magnetic-Particle, Liquid Penetrate, Radiographic, Remote Visual Inspection (RVI), Eddy-Current Testing.

​

Dye Penetrate Inspection (DPI), also called Liquid Penetrate Inspection (LPI) or Penetrate Testing (PT), is a widely applied and a low-cost inspection method used to locate surface-breaking defects in all non-porous materials (metals, plastics, or ceramics).

​

The penetrate may be applied to all non-ferrous materials and ferrous materials; although for ferrous components Magnetic-Particle Inspection is often used instead for its subsurface detection capability. LPI is used to detect casting, forging and welding surface defects such as hairline cracks, surface porosity, leaks in new products and fatigue cracks on in-service components.

​

Eddy Current (ECI) testing has its origins with Michael Faraday's discovery of electromagnetic induction in 1831. In 1879 Hughes recorded changes in the properties of a coil when placed in contact with metals of different conductivity and permeability, but it was not until the Second World War that these effects were put to practical use for testing materials.

​

Much work was done in the 1950’s and 60’s, particularly in the aircraft and nuclear industries, and eddy current testing is now an accurate, widely used and well-understood inspection technique. Eddy Current is utilized throughout the offshore, onshore oil and Gas industry. This method of NDT is typically used for scanning coated welds to locate surface breaking defects typically on structural steel surfaces i.e. Oil Rigs, Towers, Wind Turbines and associated carbon steel components.

​

Magnetic particle inspection (MPI) is a process for detecting surface and subsurface discontinuities in ferro-electric materials such as iron, nickel, cobalt and some of their alloys.
The process puts a magnetic field into the part.

​

The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs when no electric current is passed through the test object, but a magnetic field is applied from an outside source. The magnetic lines of force are perpendicular to the direction of the electric current which may be either Alternating Current (AC) or some form of Direct Current (DC) (rectified AC). The presence of a surface or subsurface discontinuity in the material allows the magnetic flux to leak. Ferrous iron particles are applied to the part. The particles may be dry or in a wet suspension. If an area of flux leakage is present the particles will be attracted to this area. The particles will build up at the area of leakage and form what is known as an indication. The indication can then be evaluated to determine what it is, what may have caused it and what action should be taken, if any.

​

Ultrasonic Testing (UT) is very short ultrasonic pulse-waves with centre frequencies ranging from 0.1-15 MHz and occasionally up to 50 MHz are launched into materials to detect internal flaws or to characterize materials.

​

The technique is also commonly used to determine the thickness of the test object, for example, to monitor pipe work corrosion. Ultrasonic testing is often performed on steel and other metals and alloys, though it can also be used on concrete, wood and composites, albeit with less resolution. It is a form of non-destructive testing used in many industries including Aerospace, Oil & Gas Automotive and other Transportation sectors.