Is NDT Used In Pressure Vessel Testing?

Yes, Non-Destructive Testing (NDT) is commonly used in pressure vessel testing to detect defects and assess the condition of the equipment without causing any damage. NDT plays an important role in identifying issues such as cracks, corrosion, thinning, weld defects, and leaks that may not be visible during routine inspections.

In India, NDT methods are used as part of pressure vessel inspection in accordance with applicable regulations under the Factories Act, 1948, Static and Mobile Pressure Vessels (Unfired) Rules, 2016, and guidelines from the Directorate of Industrial Safety and Health, wherever required.

Common NDT Methods Used

• Ultrasonic Testing (UT) – For thickness measurement and internal defects
• Magnetic Particle Testing (MPT) – For surface cracks in ferromagnetic materials
• Dye Penetrant Testing (DPT) – For surface crack detection
• Radiographic Testing (RT) – For weld quality and internal defect detection
• Visual Testing (VT) – Preliminary inspection of external conditions

NDT is typically used:

• During periodic inspections
• When corrosion or damage is suspected
• After repairs or modifications
• For critical or high-pressure equipment