What Exactly Is NDT?
We’ve already discussed what NDT stands for and how it’s utilized in the field. Let’s take a closer look at some of the specifics that govern the realm of NDT.
THE CRITICAL ROLE OF NDT
The importance of non-destructive testing in ensuring that assets are properly maintained cannot be overstated.
Here are the main reasons why NDT is utilized by so many businesses throughout the world:
- Savings.
The most apparent response to this issue is that nondestructive testing (NDT) is more desirable than destructive testing because it allows the material or item being inspected to survive the inspection unscathed, saving money and resources.
- Safety.
NDT is especially intriguing because, with the exception of radiographic testing, practically all NDT procedures are safe for humans.
- Efficiency.
NDT methods provide a complete and relatively rapid examination of assets, which can be critical for assuring project site safety and performance.
- Accuracy.
NDT techniques have been demonstrated to be accurate and predictable, which are both desirable attributes in maintenance processes designed to assure worker safety and equipment durability.
“NDT is the lifeblood of a well-run plant, and any competent inspector understands its value. Highly trained personnel with expertise and integrity are required for NDT procedures and consistent outcomes. Not only must the technician be qualified in a certain NDT method, but they must also understand how to operate the data collection equipment. Understanding equipment capabilities and limits might mean the difference between accepting or rejecting a decision.”
WHERE IS NDT APPLIED?
Depending on how broadly you define NDT, you might argue it’s employed in practically every business on the planet, because visual inspections (whether structured or casual) occur in almost every workplace in some form or another.
However, many sectors require NDT and have structured methods for its usage, as codified by the organizations we mentioned above, such as API and ASME.
Among these industries are:
- Oil & Gas
- Power Generation
- Chemicals
- Mining
- Aerospace
- Automotive
- Maritime
- Mining
Inspectors in all of these businesses utilize one of three ways to get access to difficult-to-reach or high-rise locations:
- Scaffolding. necessitates inspectors working at height in order to obtain inspection data.
- Rope access is available. Inspectors must also work at heights while using rope access to obtain inspection data. This guide will teach you more about rope access and how inspectors utilize it.
- Drones. Drones can be used by inspectors to collect inspection data remotely, enabling them to stay securely outside of tight places or below high-risk positions. Continue reading to learn more about how drones may be used for NDT.
The Top 8 Non-Destructive Testing Methods
In NDT and NDE, multiple procedures are utilized to collect various sorts of data, each needing its own set of instruments, training, and preparation.
Some of these approaches may permit a thorough volumetric inspection of an object, whilst others may just permit a surface inspection. Similarly, depending on the type of material employed, certain NDT methods will have varied degrees of success, and some techniques, such as Magnetic Particle NDT, will only function on specific materials (i.e., those that can be magnetized).
Here are the eight most commonly used NDT techniques:
- Visual NDT (VT)
- Ultrasonic NDT (UT)
- Radiography NDT (RT)
- Eddy Current NDT (ET)
- Magnetic Particle NDT (MT)
- Acoustic Emission NDT (AE)
- Leak Testing (LT)
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