INSPECTION

Inspection services provided to the Offshore and Onshore Industry by Rayliv Oil And Gas include:

Acoustic Emission Testing

The technique is used, for example, to study the formation of cracks during the welding process, as opposed to locating them after the weld has been formed with the more familiar ultrasonic testing technique. In a material under active stress, such as some components of an airplane during flight, transducers mounted in an area can detect the formation of a crack at the moment it begins propagating. A group of transducers can be used to record signals, and then locate the precise area of their origin by measuring the time for the sound to reach different transducers. The technique is also valuable for detecting cracks forming in pressure vessels and pipelines transporting liquids under high pressures. Also, this technique is used for estimation of corrosion in reinforced concrete structures.

Eddy Current Testing
This method of testing is one of many electromagnetic testing methods used in nondestructive testing (NDT) making use of electromagnetic induction to detect and characterize surface and sub-surface flaws in conductive materials.

Liquid Penetrate Testing
This method of testing is suitable for detecting defects open to the surface only and on any material that is essentially nonporous. A bright colored penetrant or a ﬂuorescent ink is sprayed on the surface of the component to be inspected. The penetrant will be drawn into any surface imperfections or cracks. After the excess penetrant is removed, a thin layer of developer is then applied. The penetrant will then be drawn out of the defects and made visible with use of visible light or ultraviolet light, as appropriate.

Magnetic Particle Testing
This technique of inspection is suitable for detecting surface and sub-surface defects. Only ferromagnetic materials can be tested with this technique. An energized yoke is used to create a magnetic field by temporarily magnetizing the component to be tested. While magnetization is going on, a magnetic medium is applied. Any imperfections or defects will create a disturbance to the magnetic field ﬂow and a distinctive pattern will be formed at the defect location which will make it visible.

Acoustic Emission Testing

Most weldments of steel pipes in energy sector require some method of testing to determine the quality of the welding. A common method of testing is by radiographic examination. Radiographic testing aims to record images of ﬂaws introduced into the welds. These could be process defects (e.g. porosity, lack of fusion) or service-related conditions (e.g. corrosion-cracks).
Radiographic inspection is carried out utilizing radioactive sources such as Ir-192, Se-75 or Co-60 and also with X-ray irradiating apparatus. Our technicians are highly experienced not only in the use of these radioactive sources and X-Ray equipment but also take pride in holding a clean safety record on all projects undertaken.

Ultrasonic Testing
UT inspection is carried out on configurations of welds, whereby due to geometry and restricted access to either side of the area to be inspected, radiographic examination cannot be done, or where UT is known to exhibit better detection capability. An ultrasonic wave is sent into the material and the reﬂected wave is then analyzed. Flaws can be recognized by trained personnel on the instrument screen. Features of the ﬂaw (like location, orientation, length, depth and height of the ﬂaw) can then be identified and assessed.
This method of inspection holds advantages of detecting defects such as lamination and fusion-related defects for which radiographic examination is known to have lower probability of detection.

Visual Testing
This is the oldest and most common nondestructive testing (NDT) techniques. It is typically the first step in the examination process to inspect a variety of product forms including castings, forgings, machined components and weld elements, according to the NDT Training & Test Center

OTHER INSPECTION SERVICES
Our company also provides other methods of inspection such as UT Thickness Gauging, Hardness Testing and Holiday Detection. Besides testing services, we also offer third party engineering inspection, quality assurance, quality control and certification services. Our range of services will in future include the supply of specialist manpower ranging from engineers to multidiscipline inspectors and comprehensive programs for heat exchanger maintenance & inspection.