Where is it specified that the weld joints between the heat exchange tubes and the tube sheet must undergo non-destructive testing after welding?
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The weld joints between the heat exchange tubes and the tube sheet must undergo non-destructive testing after welding; does anyone know where this requirement comes from?
The TSG0004-2009 version contained such a provision, but it is not found in TSG21-2016. If it does not comply with the relevant provisions in GB150, is it permissible to ignore it?
GB/T151 only specifies requirements for welding on the inner hole; no relevant requirements were found for the other aspects
151 It’s not required of you to do it; moreover, surface inspection is necessary for cases involving dissimilar steels
In cases where the tube side medium is extremely hazardous or where stress corrosion occurs on the tube side, this pipe fitting requires post-weld heat treatment.
It is best to conduct penetrant testing to ensure that the welding achieves full penetration. If possible, add a airtightness test.
This definitely needs to be checked. Otherwise, the weld will have defects, which will cause problems later on.
The standard practice is to carry out magnetic particle or penetrant testing; this weld is prone to porosity, and cracks may also appear as well, so testing is highly necessary
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Penetrant testing is used to determine whether a weld has been fully penetrated You’re taking it literally