Regarding issues related to non-destructive testing: volume defects, surface defects
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Non-destructive testing includes radiographic testing and ultrasonic testing. Magnetic particle testing, penetrant testing, as well as eddy current testing and ultrasonic testing – I would like to know what the advantages and disadvantages of each are. Also, what types of equipment or pipelines are affected by volume defects? What are the other types of area defects?
The issue is too complex to explain in just one or two sentences; could you give a specific example?
Pipe welds, inside boilers, etc
The welding method to be used at the pipeline welds shall comply with the requirements specified in the design documents. Under normal circumstances, radiographic testing is used for butt welding of pressure pipelines, while penetrant testing is employed for socket welding. I have never built a boiler, so I have no comment to make.
There is ray inspection, which is harmful to the human body and can cover large areas, as well as ultrasonic inspection. The scope is also wide; magnetic particle testing and penetrant testing are relatively simple, but their accuracy is low