2 replies to this topic

[guoyinyanliner]

Should the NDT and testing sequence for sour gas pipeline welds be executed as 'RT — PWHT — Hardness Testing — UT', or should it follow the order of 'RT — PWHT — UT — Hardness Testing'
why

[Pilesar]

There should be a standard procedure for generally accepted engineering practice. A mechanical engineer may be of more use to you for this information.

[breizh]

Hi,

I'm not a mech guy, each technic has its own benefit. Everything depends on what you are looking for.

Nothing to do with sequences.

My view only.

Breizh

 

 

NDT methods rely on sound waves, electromagnetic radiation, and magnetic fields to examine materials without altering their physical properties. The most common techniques include: [1, 2]

• Ultrasonic Testing (UT): Uses high-frequency sound waves to detect internal flaws and measure the thickness of materials.
• Radiographic Testing (RT): Employs X-rays or gamma rays to create detailed images of internal features and check for hidden cavities or structural issues.
• Magnetic Particle Testing (MT): Designed to locate surface and near-surface defects in ferromagnetic materials (metals that are attracted to magnets).
• Liquid Penetrant Testing (PT): Applies a liquid dye to a material's surface to draw out and reveal surface-breaking cracks or porosities.{C}{C}
• Visual Testing (VT):{C} The most fundamental method, which involves the physical examination of a part's surface using the naked eye, cameras, or magnifying tools