Regarding the weld evaluation classification report
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In Appendix B of NB47014, regarding the classification report for wood and filler metals, is it clear that foreign material grades can be assigned to the corresponding domestic grade categories? If domestic welding materials are used, is it then unnecessary to prepare a new welding procedure qualification?
Yes, the classification report on wood and filler metals in Appendix B of NB47014 can indeed be understood in that way. If the grade of foreign materials can be classified into the same group as domestic grades, then no new welding performance assessment is required when using domestic welding materials for welding operations. This approach is intended to simplify the welding process, reduce repetitive evaluation tasks, and ensure that the welding quality meets the specified requirements. However, in practice, it is still necessary to refer to relevant welding specifications and standards, as well as the recommendations of material manufacturers, to ensure the suitability of the welding process and the quality of the weld. .
The regulations require that a weld assessment be conducted for any material of a foreign grade used for the first time.