Difficult Tantalum Repair
Many times a vessel with damage similar to this is removed from service for reglass. A discussion regarding the process, temperature, and pressure will take place to determine the best mode of repair as an option.
Following ASME Code, welding the area must be stress relieved before repair fabrication.
Repair fit up is crucial when the repair must conform to multiple radii.
Here is the installed repair. The small plug indicates where the cement was injected to fill all the void under the patch. The perimeter is sealed to less than .001”. The replacement gasket must be shimmed and sealed to prevent leakage.