info@integrityndt.co.za rfq@integrityndt.co.za
+27 11 328 1600
36 Glenhove Rd Melrose Estate Sandton 2196
10 September St, Unit 10C Middelburg, Mpumalanga
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We uphold integrity through the practice of being honest and showing a consistent and uncompromising adherence to our principles and values.
We are a member of the Two Roads Group of Engineering Service and Manufacturing companies, that center around Asset Integrity, Pressure Testing, Inspection and Non-Destructive Testing of Pressure Equipment, Steam Generators, Pipelines, Steel Structures and Tanks.
Applying NDT methods will allow for corrective and preventative action to be put in place and assist with maintenance planning.
We serve a variety of industry sectors including: Power Generation, Petrochemical, Mining,Oil and Gas, Paper and Pulp, Construction, Water, Marine and Engineering.
Our Non-Destructive Testing experts are supported by years of experience, coupled with an aptitude for using of cutting-edge technologies and equipment. The INTEGRITY NDT Projects team can assist you with any and all of your inspection and asset integrity needs and concerns.
Metallurgical replication is a non-destructive technique employed to acquire topographical or microstructural insights from surfaces that cannot be taken out of service. Utilizing portable, battery-powered site equipment, we perform light polishing and etching on metallic surfaces. This process enables the creation of precise replicas of the microstructure, allowing for in-depth analysis using optical microscopy. The achieved results stand in direct comparison to those obtained from laboratory-prepared metallographic specimens. The key advantage lies in the non-destructive nature of replication, eliminating the need for equipment removal from service.
Pulsed Eddy Current (PEC) testing is an advanced non-destructive testing (NDT) method. It uses pulsed magnetic fields to induce eddy currents in conducting materials, making it excellent for detecting corrosion under insulation (CUI) and measuring metal thickness. PEC can penetrate insulation and non-conductive materials, making it invaluable in industries like oil and gas for inspecting critical assets without the need for insulation removal. It’s a powerful, cost-effective, and efficient NDT tool for maintaining asset integrity.
Computed radiography has revolutionised non-destructive testing by producing digital X-ray images without the need for traditional film. The process involves utilising X-ray generating devices identical to those in conventional X-ray testing. However, instead of film, a flexible, reusable imaging plate coated with phosphor material captures the X-ray image. The digital radiography landscape consists of two fundamental types: Computed Radiography (CR) and Digital Detector Array radiography (DDA), also known as Digital Radiography (DR). The shift towards digital systems has been driven by technological advancements and cost reductions associated with film-related processes, making digital radiography the preferred option. This domain also encompasses Computed Tomography (CT), which compiles multiple digital images to generate 3D representations. While CT scanning has been established in medical imaging, it’s a relatively novel application in industrial non-destructive testing.
Magnetic Flux Leakage (MFL) testing is a widely adopted non-destructive method for detecting corrosion and pitting in steel structures. Often applied for assessing pipeline and storage tank integrity, MFL principles extend across various industrial sectors. This technique employs a potent magnet to magnetise conductive materials, typically steel. In the presence of defects such as corrosion or material loss, the magnetic field “leaks” from the steel. MFL probes encompass a magnetic detector positioned between the magnet’s poles to detect the leakage field. A magnetic circuit forms during inspection, saturating the part with a magnetic field that eventually overflows and leaks from the pipe wall. Strategically placed sensors capture the three-dimensional vector of the leakage field, enabling accurate defect
Automated ultrasonic testing encompasses a range of methods employing mechanised equipment to scan parts with ultrasonic waves. This approach can also incorporate computer software to assist technicians in identifying discontinuities. It’s a rapid and accurate technique for detecting surface and sub-surface defects, including cracks, corrosion, and heat damage. With applications spanning aviation, aerospace, oil and gas, and other industries, automated ultrasonic testing has gained prominence.
Eddy current testing, an electromagnetic method, is among the non-destructive testing techniques for detecting flaws in conductive materials. By employing an alternating current in a specialized coil near the test surface, a changing magnetic field generates eddy currents in the test-part. These currents’ variations in phases and magnitude are tracked through a receiver-coil or by monitoring changes in the primary excitation-coil’s alternating current. Discrepancies in electrical conductivity, magnetic permeability, or the presence of defects lead to changes in the eddy current, causing corresponding fluctuations in the measured current. These changes are visually displayed and interpreted for defect identification.
Phased array ultrasonic testing, a form of non-destructive testing, provides a means to inspect objects like tubes, pipes, and bolts for internal flaws without causing damage. Phased array testing devices feature multiple elements arranged within the probe, allowing for greater control over emitted ultrasonic beams. This arrangement facilitates steering, focusing, and scanning of beams, enabling the mapping of material components from various angles. The versatility of phased array ultrasonic testing stems from its ability to use multiple elements in a single transducer, offering advantages in steering and scanning beams that aren’t always achievable with other non-destructive testing methods.
Guided wave ultrasonic testing identifies corrosion damage and other defects across substantial distances in elongated structures such as pipes. The process involves clamping a specialised transducer ring around the pipe, transmitting guided waves in both directions along the pipe. This non-destructive method finds application in determining the condition of pipes and similar structures. Developed at Imperial College, London in the 1990s, guided wave testing has evolved into a practical technique supported by ongoing research and collaboration.
Alternating current field measurement (ACFM) offers an electromagnetic technique to detect and size surface-breaking cracks in metallic components and welds. This approach combines the benefits of alternating current potential drop (ACPD) and eddy current testing (ECT) for defect sizing and electrical contact-free operation. ACFM introduces an electric current to the part and measures the associated electromagnetic fields near the surface. Defects disrupt these fields, providing graphical information to operators. This method allows easy identification of defect locations and lengths, contributing to immediate evaluation of implications for structural integrity. Notably, ACFM can be performed through paint and coatings, enhancing its speed and cost-effectiveness compared to other techniques like magnetic particle inspection.
Magnetic Rope Testing (MRT) is a robust method for assessing defects and deterioration in steel wire ropes. This technique involves magnetising a section of rope passing through a sensor, which detects and quantifies changes in the magnetic field due to broken wires, corrosion, wear, or mechanical damage. A comprehensive review of wire rope inspection methods, sensors, and signal processing techniques underscores MRT’s effectiveness. Through advancements in sensor technology and signal processing, MRT enhances its ability to assess steel wire rope condition, fostering practical applications across industries.
Nomfundiso Matjila occupies the position of Acting General Manager for Integrity NDT, a member of the 2Roads group. Fundi (as she’s known) is a qualified Professional Accountant (SA) and a member of the South African Institute of Professional Accounts…
Gerhard brings to the position as Operations Manager years of experience gained in the NDT and NDT Management field as well as, the HSE Environment for Mining, Power Generation and Petrochemical Industries…
We uphold integrity through the practice of being honest and showing a consistent and uncompromising adherence to our principles and values.
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