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QA/QC and Non-destructive Testing Services
QA/QC and Non-destructive Testing Services
What is Non-Destructive Testing (NDT)?
NDT is an engineering technique used to test, analyse and detect flaws in the structural properties of materials, components and whole structures. The benefit of NDT is that it allows you to evaluate structures and materials without causing any damage or impacting the serviceability of the structure.
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When should Non-Destructive Testing be used?
NDT provides an extensive investigation into the safety and reliability of your materials and structures. NDT technicians are often called to conduct tests on things like trains, aircraft and motor vehicles, as well as power stations and reactors, pipelines, oil rigs and other working sites where structural failure would be a major problem.
What methods of Non-Destructive testing are there?
There are multiple methods of NDT, these include:
- Radiographic Testing (RT)
- Ultrasonic Testing (UT)
- Leak Testing (LT)
- Acoustic Emission Testing (AE)
- Electromagnetic Testing (ET)
- Penetrant Testing
- Visual and Optical Testing (VT)
- Magnetic Particle Testing (MT)
- Ultrasonic Testing (UT)
- Radiographic Testing (RT)
Why should you use Non-Destructive testing?
The main reason you should use NDT is that it doesn’t cause any adverse effects to your materials or structure during the testing process. However, aside from ensuring structural integrity, there are several other advantages to the process:
- Operational safety: NDT is a harmless technique for humans to perform, ensuring the safety of the engineers during the process
- Worker safety: As well as being safe for operators to conduct, NDT also ensures that any flaws are caught before they can cause harm or fatalities to your employees
- Accuracy: NDT is repeatable, so it allows you to correlate evaluations for clearer results
- Cost-effective: Conversely to destructive testing, NDT allows you to catch issues early and prevents you from having to pay for destroying materials
What is Welder Qualification Testing?
Before the final welding of a product, a sample will be taken to do a Weld Qualification Test. This is done for quality control to ensure that the welding process has met the correct specifications on the project. Welder Qualification Testing can include different types of Non-Destructive Testing, including Ultrasonic Testing, Radiographic Examination, Liquid Dye Penetrant Testing and Magnetic Particle Testing. At Instant Steel Solutions, we test the full range of steel products that we supply so that you know you’re getting the best quality products.
Welder Qualification FAQ:
Q: How do you conduct a welder qualification test?
A: Codes detail the requirements for performance qualifications of welders and there are five types of tests for Welder Performance Qualification, these include:
- Visual Inspection (VT)
- Bend Test
- Macro Etch Test
- Fillet Weld Break Test
- Radiographic Test (RT)
The welder is required to weld a test coupon in accordance with the qualified welding procedure to pass and be qualified.
Q: What is the major difference between a qualified welder and a certified welder?
A: Certified welders are technicians whose qualification is documented by the company the welder works for. Qualified welders are technicians who demonstrate their skills with a particular material or process and bring those skills with them.
Q: What is the highest level of welding?
A: The 6G certification is considered the gold standard of the welding profession. This qualifies technicians to weld 360 degrees around a pipe that doesn't move.