Non-Destructive Testing (NDT)

Non-destructive testing (NDT) is a testing and analysis technique used by industries to evaluate the properties of a material, component, structure or system for characteristic differences or welding defects and discontinuities without causing damage to the original part. NDT also known as non-destructive examination (NDE), non-destructive inspection (NDI) and non-destructive evaluation (NDE). Safety First quality team performs almost every type of non-destructive testing for metals and welds. Almost every test result from Safety First is reported and certified. Quality inspectors from Safety First are certified and all testing devices are calibrated with valid certificates.

Visual inspection is an NDT weld quality testing process where a weld is examined with the eye to determine surface discontinuities. It is the most common and the very first, preliminary method of weld quality testing. At Safety First, visual testing is performed by trained quality inspectors and is usually followed by endoscopy testing for result confirmation.

Endoscopy testing is done by an endoscope; that is an optical instrument that acts as inspection camera which is used for visual inspection of interior surfaces in pipes and other hard-to-reach areas. Safety First is almost the only engineering company in the middle east that does its endoscopy testing using a RIDGID micro CA-350 inspection camera, with a 30-meter tube. Our qualified quality inspectors do the testing for the range between 10% and 100% of welds, upon customer requirements.

Penetrant method of NDT is used to detect surface defects that are invisible to the simple eye. It is based on use of capillary properties of liquids. It remains less advanced visual test, however it is not very simple. Safety First quality team performs penetrant testing for welds on tanks, plates and almost any other weld. Penetrant testing results from Safety First are reported and certified. Quality inspectors for penetrant testing are certified and testing device is calibrated with a valid certificate.

Magnetic particle testing (MT) is a very popular, low-cost method to perform non-destructive testing of ferromagnetic material. Unlike penetrant testing, which reveals discontinuities only on the surface; magnetic particle testing can also reveal discontinuities down to 6mm depth from the surface. Safety First quality team performs magnetic particle testing for welds on tanks, plates and flat surfaces. Magnetic particle testing results from Safety First are reported and certified. Quality inspectors for magnetic particle testing are certified and testing device is calibrated with a valid certificate.

Ultrasonic testing (UT) comprises a range of non-destructive testing techniques that send ultrasonic waves through an object or material. These high frequency sound waves are transmitted into materials to characterize the material or for flaw detecting. One of the most useful characteristics of UT is that it determines the exact position of a discontinuity in a weld. UT method requires a high level of operator training and competence and is dependent on the establishment and application of suitable testing procedures. This testing method can be used on ferrous and nonferrous materials. It is often used for testing thicker sections that are accessible from only one side, and it can often detect finer lines or plainer defects which may not be as readily detected by radiographic testing. Safety First quality team performs ultrasonic testing for welds on tanks, plates, pipes and almost any other weld. Ultrasonic testing results from Safety First are reported and certified. Quality inspectors for ultrasonic testing are certified and testing device is calibrated with a valid certificate.

Phased array ultrasonics (PA) is an advanced method of ultrasonic testing that has applications in industrial non-destructive testing. Common applications are find flaws in manufactured materials such as welds, as well as to detect cracks, voids, and pits caused by corrosion. The technology can measure material and coating thickness, detect changes in material properties and inspect joints and interfaces, including adhesive mapping. As an advanced NDT method, it is used to detect discontinuities to determine component quality, making it ideal for weld inspections, thickness measurements, corrosion inspection, and pressure vessels. Phased array testing results from Safety First are reported and certified. Quality inspectors for phased array ultrasonic testing are certified and testing device is calibrated with a valid certificate.

Radiographic Testing (RT) is a non-destructive testing method which uses gamma rays to examine the internal structure of manufactured components identifying any flaws or defects. Safety First quality team performs radiographic testing for detecting porosity, inclusions, cracks, and voids in the interior of welds. Radiographic testing results from Safety First are reported and certified. Quality inspectors for radiographic testing are certified and testing device is calibrated with a valid certificate.