Basis for selecting the non-destructive testing ratio
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What is the appropriate proportion for non-destructive testing of Class II pressure vessels?
In accordance with the provisions of 10.3–10.6 in GB150.4.
It mainly depends on the medium, pressure, and material.
It mainly depends on the medium; pressure and material also take into account the designer’s experience.
I agree with what was said above; it mainly depends on the medium, pressure, and material, as well as the designer’s experience. But TSG21 also needs to be taken into account
Subject to meeting regulatory and standard requirements, it relies mainly on experience...
It mainly depends on the medium; pressure and material are the key factors, and it has little to do with the type of container! There are also those that are not classified but still undergo 100% testing.
Check 150, the tolerance specifications, as well as the relevant non-destructive testing requirements specified in other design standards you are referring to
For beginners, the key is to follow the relevant standards; for pressure vessels, these include GB150, TSG21-2016, as well as other related industry standards. The category of the vessel isn’t that important – what matters first is meeting the requirements of these standards. Experience comes into play in terms of the designer’s understanding of the equipment’s functions, whether its structure is special, and whether conditions exist for inspection and maintenance, so as to determine the appropriate proportion and methods for inspection.
You should specify whether it refers to the non-destructive testing ratio during manufacturing or the testing ratio during operation. If it is related to manufacturing, GB150 and the relevant standards TSG21 are sufficient; whereas if it pertains to operation, the criteria must be determined based on TSG21, as well as the type of medium, material used, operating temperature, and operating pressure. It is also necessary to consider whether there have been any cases of failure in similar equipment.