ULTRASONIC TESTING (UT)
High frequency sound energy is used to conduct examinations and make measurements by ultrasonic testing. Ultrasonic inspection is applied in flaw detection/evaluation, dimensional measurements, material characterization, etc. This is an approved method for testing of weldments, pipes, complex castings and forgings, tanks, pressure vessels and others.
RADIOGRAPHIC TESTING (RT)
Radiography involves penetrating Gamma radiation to examine parts and products for imperfections. A radioactive isotope is used as a source of radiation. Radiation is directed through a part and onto film or other imaging media. The resulting shadowgraph shows the dimensional features of the part. Possible imperfections are indicated on the film as density changes.
MAGNETIC PARTICLE INSPECTION (MT)
A quality method used for testing ferrous components for surface breaking defects. This can be applied to bars up to 8 meters in length, castings, forgings, machined components or welds.
LIQUID PENETRANT TESTING (PT)
This is widely applied inspection method used to locate surface-breaking defects in all non-porous materials (metals, plastics, or ceramics). PT 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.
VISUAL INSPECTION TESTING (VT)
It is often the most cost-effective method, but it must take place prior to, during and after welding. Many standards require its use before other methods, because there is no point in submitting an obviously bad weld to sophisticated inspection techniques.
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