NDT/Welding/Painting services

NDT Testing

Penetrant Testing (PT)

Liquid or dye Penetrant testing is a non –destructive method for finding discontinuities that are open to the surface of solid and essentially non-porous materials. Indications of flaws can be found regardless of the size, configuration, internal structure, or chemical composition of work piece being tested and regardless of flaw orientation. Liquid penetrant can seep into (and be drawn into) various types of minute surface openings (reportedly, as fine as 4micro inch in width) by capillary action. The result of this, the process is well suited for the detection of all types of surface cracks, laps, porosity, shrinkage areas, lamination and similar discontinuities in casting, forgings, welds and other product forms. Dye penetrant inspection is used extensively for the testing of wrought and cast products of ferrous and non-ferrous metals, powder metallurgy parts, and ceramics and glass objects.

Magnetic Particle Testing (MT)

Magnetic particle testingor MPT is a nondestructive testing method for locating surface and near surface discontinuities in ferromagnetic materials. It depends for its operation on the fact that when the material or part under test is magnetized, discontinuities that lie in a cause leakage field to the direction of the magnetic field will cause a leakage field to be formed at and above the surface of the part. The presence of this leakage field, and therefore the presence of the discontinuity, is detected by the use of finely divided ferromagnetic particle applied over the surface, some of the particle being gathered and held by the leakage field. This magnetically held collection of particle forms an outline of the discontinuity and generally indicates its location, size, shape and extent. Magnetic particles are applied over a surface as dry particles, or as wet particle in a liquid.

ltrasonic Testing (UT)

It is a non-destructive testing (NDT) method in which beams of high frequency sound waves that are introduced into the material being tested are used to detect surface and sub-surface flaws. The sound waves travel through the materials with some attenuation of energy and are reflected at interfaces. The reflected beam is detected and analyzed to define the presence and location of flaws.Ultrasonic waves are almost completely reflected at metal gas interfaces. Partial reflection occurs at metal liquid or metal solid interfaces, with the specific percentage of reflected energy depending mainly on the ratios of certain properties of the matter on opposite sides of the interface.

Cracks, laminations, shrinkage, cavities, bursts, flakes, pores, bonding faults and other discontinuities that can act as metal-gas interfaces can be easily detected. Inclusions and other inhomogenities in the metal being inspected can also detected by causing partial reflection or scattering of the ultrasonic waves, or by producing some other detectable effect on the ultrasonic waves.

Welding Inspection

At QC-Tech Services, we have numerous Inspectors qualified as Welding Inspectors. Inspectors are qualified to either CWI or CSWIP 3.1 & 3.2 standards.

These welding inspectors includes following duties:

  • QA/QC roles
  • Preparation of hand over packages to clients
  • Visual inspections
  • Radiographic Interpretation
  • Interpretation of drawings
  • Supervising NDT procedures
  • Documentation Control

Other services can be carried out at as per client’s request.

Painting Inspection

At QC-Tech Services,we have numerous Inspectors qualified as Painting Inspectors. Inspectors are qualified to CSWIP-BGAS standard.

These Painting inspectors includes following duties:

  • Provide assurance of the quality of the paint application
  • Provide unbiased reports and a third party paint inspection
  • Verify that all surfaces are in suitable conditions for painting
  • Report all surface defects to consultant and owner at the prep stage, intermediate coat and final finish
  • Notify the consultant and owner of any anomalies or irregularities in the specifications
  • Surface acceptance and substrate testing for painting
  • Unannounced onsite inspections
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Other services can be carried out at as per client’s request.