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Warning: saw a certified welder at the Baton Rouge shipyard grind down a boiler tube weld with zero shielding, and it cracked within 48 hours
If you see a fitter skip the shielding gas just to save time on a 2 inch tube weld, walk away from that job because that crack will come back on you at hydro test.
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rivera.jesse9d ago
Hold up, the shielding gas part is only half the story. Grinding a boiler tube weld is the bigger problem here. You don't grind down a pressure weld on a boiler tube, period. That removes the reinforcement and thins the wall right at the joint, which is exactly where all the stress sits. The no shielding just made it fail faster, but that weld was done the second someone put a grinder to it. Any inspector who knows boiler work will flag that in a heartbeat. Sounds like that guy had no business touching certified pressure work.
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