Flaw detection of atmospheric-pressure equipment for highly hazardous media
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A constant-pressure device is now being designed, with a highly hazardous medium; the material used is S31603. 100% radiographic testing is required for welds of types A and B. Since leak testing with kerosene has been performed on the device, can welds of type D be exempted from leak testing? Please give me some advice!
Safety comes first! The key to this type of atmospheric-pressure equipment lies in its subsequent maintenance!
It shall be carried out in accordance with the requirements of GB/T150.
Reference GB150-2011 for implementation
So, is it necessary to perform penetrant testing on both kerosene leaks and Class D welds? Is this repetitive?
Penetrant testing can detect tiny cracks, but it’s hard to say the same for kerosene. Also ； Highly hazardous media do not allow for even trace leaks, so it is better to be cautious.
Both kerosene leakage and Class D welds require penetrant testing
Oh, I see, thanks!
Kerosene is rarely used with stainless steel... You’re just adding work to the people who operate the pickling equipment
Pressure vessels are generally subjected to direct penetration without the use of kerosene, due to the various limitations and uncertainties associated with kerosene