From time to time, scientists and the welding industry have devised several methods for inspecting the quality of welds after their completion, such as ultrasonic testing, radiography, magnetic particle testing, liquid penetration and so on. Despite of the fact that these techniques are highly advanced and substantially effective at detecting flaws, there are still plenty of manufacturing firms throughout Victoria (and also Australia) that rely heavily on the traditional visual welding inspection technique.
Even in the modern times, the significance of a good old visual welding inspection cannot be ignored. In order to carry out the analysis, a qualified welding inspector usually remains present during the operation. It is his responsibility to make sure that standard quality welds are achieved, particularly by investigating condition of the electrodes, relevant certificates, weather condition, joint preparation, tools & machines used, slag cleaning, current, incomplete welds, etc. These steps cannot be assessed properly without thorough scrutiny by the human eye.
A typical visual welding inspection in Melbourne can help to save a lot when conducted properly, by nullifying the need for re-radiography and repairs. But in order to make that happen, the inspector taking care of the process requires to pay careful attention to every aspect. However, that is generally not a problem because most reputed welding inspectors possess the required qualifications and certification issued by the relevant authority. They are also aware of the necessary international & national standards and codes that they need to observe. For instance, pipeline welds are generally inspected as per API 1104 and so on.
Another vital reason why visual welding inspection has such substantial significance in the manufacturing industry is due to the fact that not all joints are picked for radiography once they have been completed. And any joint not inspected by radiography may have a flaw, which can cause a pipeline or plant operation to fail, ultimately spelling disaster. A faulty joint is incapable of handling the stress triggered by high temperature and pressure of the fluid inside it. But a joint that has been inspected visually is already flawless and can therefore, pose no threat even if not selected for radiographic testing.
Thus, it is clearly evident from the above mentioned information why visual welding inspection is given so much importance even today. Its efficacy cannot be championed even by uber-modern techniques like magnetic particle testing or dye penetration. It can stop weld defects even before they occur.