NDT Level IIIDoug
NDT Level IIIForum Replies Created
I do agree. We had similar cases too.
Has anybody else experienced something similar on the job? We do know limitations in UT / MUT but in many cases clients would ask for corrosion scanning on old pipe or vessel where scanning surface is not perfect and would expect perfect results every time.
Our working environment is not office lab and every now and then when you lose a signal on A scan display, would you think its pitting like this or just lack of couplant or bad surface?
Final Result:
As there was only 1mm remaining wall, HydroForm would not detect the same and it would look like a just signal loss due to poor surface.
To be sure that pitting would be detected and sized with Phased Array, I scanned with Dual Linear Array and this is what it looked like:
Performing MUT with same equipment on this sample gave me this result:
I found this interesting read. Its mainly for US but has some interesting info.
Become a NDT inspector
Nondestructive testing requires technical training and detail
If you stop and think about it, almost everything we use in our daily lives is manufactured or manmade — and nothing manmade lasts forever. This is why everything manufactured must be inspected!
The men and women who perform these inspections are trained to use Nondestructive Testing (NDT) equipment and they are called NDT inspectors because the methods used will not harm the objects being inspected. They use specialized equipment like X-ray cameras and ultrasound machines to inspect the infrastructure of our modern world.
I have been an NDT inspector for over 17 years and have traveled around the U.S. inspecting nuclear power plants, pipelines, oil refineries, ships, buildings, cranes, automobile parts, missile guidance systems and many other things.
Education requirements
NDT inspectors are not required to have a degree, but they are required to have a high school diploma or GED and must complete a minimum amount of formal classroom training covering NDT theory and equipment use. NDT training is offered mainly at vocational schools, but there are a few community colleges around the country offering the training also. In most cases, the required training will be mostly hands-on and can be completed in less than a year.
Unique industry with unique opportunities
There are actually several things that make the career of a NDT inspector unique. NDT inspectors can work in a variety of industries including aerospace, nuclear power, wind power, offshore, pipeline, automotive, manufacturing, defense and many more. Some NDT inspectors choose to work in one specific industry, like petrochemical or aerospace, while others may like the variety of working in several industries at the same time (I chose to work in multiple industries).
Inspectors can also choose to specialize in a specific NDT method they like, or they may perform all the methods. There are also opportunities to use automated and robotic equipment, perform inspections using rope access equipment and opportunities for travel. Very few careers offer all the choices available to a NDT inspector.
Salary
According to a recent salary survey from Personnel Qualified for Nondestructive Testing (pqndt.com), entry level NDT Inspectors averaged $49,000-$52,000.
Is it for you?
For anyone thinking about a career as a NDT inspector, consider the following:
• This is not an office job. You will not sit behind a desk and work on a computer. NDT inspection is a hands-on career and you will either be working outside or in an industrial warehouse.
• Take into consideration that NDT inspectors must pay close attention to the details and always take their job responsibilities seriously. After all, someone’s family will be flying in the jet plane after you have inspected it, maybe even your own!
• NDT is not a physically demanding job. Inspectors do not repair the flaws that their inspections reveal and rarely will they be required to lift or carry anything weighing more than 20–30 pounds.
• You do not need to earn a four-year degree to work in the field. NDT inspection is a great option for people not planning on the traditional college route.
NDT inspection is a great career choice for men and women looking for an exciting job that offers opportunities for travel and good income potential.
Mike Oden, is a NDT inspector and a graduate of The Ocean Corporation’s School of Nondestructive Testing in Houston (www.oceancorp.com).
Non-destructive testing methods are used to detect possible irregularities without damaging the physical structure and outer surface of the material. Today, as the reliability of material services increases and consumer expectations of higher quality products increase, non-destructive testing methods have begun to diversify and become widespread.
No destruction
Non-destructive testing methods more accurately identify material damage, perform control and inspection activities faster, and reduce operating costs for control and inspection work.
In this way, many different non-destructive testing methods are developed and more advanced devices are produced. The main non-destructive testing methods are: visual inspection, liquid impregnation (penetrating liquid), magnetic particles, radiographic and radioscopic control (with X-ray), eddy currents, ultrasonic control, leakage test and sound control. The method to be applied depends on the type of material and the type of error required. These methods have superiority to each other and often complement each other.
These methods include a number of inspections and tests that allow the material to be inspected without disturbing and altering the properties required for the intended use, without damaging the material and, if necessary, inspecting the entire material. Non-destructive testing methods determine at the beginning of production activities to determine the source of failure at the test site of the material and the facility has the ability to correct errors in a timely manner. This ensures the reliability of the final product. Furthermore, it is not necessary to take any sample from the material for these procedures.
Non-destructive tests do not leave traces and damage to the material. In this regard, these test methods are applied to finished parts. Examination and inspection studies will determine whether the portion contains an error.
Non-destructive testing methods are widely applied in the mechanical engineering sector, research and development studies, production control, quality control studies and service process evaluation.
Non-constructive material studies are the most important part of quality control in companies. The tested materials are tested and inspected without damage and information is obtained on the dynamic and static structures of the product, causes of leakage, points of damage, dimensions of damage and especially the tension of the material.
This method can be applied not only during production, but also after the product is used for a certain period of time. In this way, there are damages such as voids, cracks and a reduction in the cross-section of the internal structure of the material due to wear and corrosion.
Inspection services performed by accredited inspection bodies include non-destructive inspection, testing and inspection works. our organization In this context, with a strong technological infrastructure and staff in this framework, non-constructive inspection services are mainly provided:
Visual inspection (VT)
Magnetic Particle Testing (MT)
Penetrant Testing (PT)
Radiographic examination (RT)
Ultrasonic Testing (UT)
Eddy Current (ET)
Time of Flight Diffraction (ToFD)
Phased Array Ultrasonic Testing (PAUT)
and many more….
