Can you please answer the following question in details and

Can you please answer the following question in details and thanks

what NDT methods used to detect the following defect and the reasons for your choise to discover the defects in the appropriate situation, one or more relevant methods may be suggested, attention must be given to the type of defect sought and the material typeand structure in which the defect lies:

1-Sub- surface weld defects in a steel pressure vessel. The main wall thickness of the pressure vessel is 80mm. The welds hold sections of the pressure vessel together, and are the same thickness as the vessel wall. The NDT to be carried out during construction of the pressure vessel.

Solution

NDT methods used to detect the defects:-

Ø Magnetic Particle Testing

Ø Liquid Penetrant Testing

Ø Ultrasonic Testing

Ø Radiography Testing

Ø Eddy Current Testing

Ø Visual/Optical Testing

Ø Sonic /Resonance Testing

Ø Infrared Thermography Testing

      Pressure vessels, storage tanks and other safety critical components are designed to contain liquids, gases and solids such that a loss of containment does not occur. Leaks or the mechanical or structural failure of these items of equipment may result in a major accident on-site.

Non-Destructive Testing (NDT) is the application of measurement techniques in order to identify damage and irregularities in materials.