Drum nozzle

2011-01-13View Original

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Can a person with a 6FG welding qualification weld the nozzles on the welded boiler drum? What about the welding qualifications for other positions?

Reply #22011-01-14

Is this written incorrectly? There is no such position as 6FG; it’s either 5F or 6G. If it is 5F, only the qualification to weld all fillet welds is required ； With 6G, it is possible to weld all groove welds and fillet welds, which means that it is possible to weld the nozzles on the boiler drum. Reference can be made to the table in ASME Volume IX, QW-461.9 \"Skill Evaluation – Position and Diameter Range\".

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Drum nozzle

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