Tower 47041 requires surface inspection and a relationship with 150
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According to 47041 8.4, the following welds require magnetic particle and penetrant testing in accordance with GB150: a. Between the skirt and the tower shell; b. Between the lifting lugs and the tower shell; c. Other connections to the tower shell that require stress calculation. Is it correct to understand that a and b are treated as dissimilar steel joints as specified in 150 P336 10.4, while c requires stress calculation according to 47041?
GB150 is a mandatory standard that must be followed, while NB/T is a recommended standard that is not necessarily required to be implemented. However, in most cases it is best to follow the highest Accord standards.
I may not have explained it clearly; what I mean is that a, b, and c are all subjected to surface inspection using 47041 Regardless of the material, as long as it falls under categories a, b, or c in 47041, it needs to be tested. Or does it depend on the material, with testing required for type 150 dissimilar joints?
This post was last edited by wanlirn on 2016-11-6 at 20:24. It should be carried out in accordance with the regulations of 150 10.4; in fact, it should also comply with the requirements for surface inspection specified in the relevant standards
GB150 represents the minimum requirements; since there are specific requirements for towers, it is best to follow those standards. The tower standards do not impose any material restrictions, so it is advisable to check whether the structure meets the requirements of those standards.
All ABC welds are under stress; they must be inspected for defects in accordance with the requirements of 150 and 47041