Weld cracking, infused land, inter-bead cavities, or laminated plate inclusions are among the many reasons for boiler failure.
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Measuring and setting out the datums for perfect re-alignment of the burners when they are placed back in position is crucial, so not to induce flame impingment in the repaired furnace tube.
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Removing the defective part of the furnace tube |
Failure in this instance was due to toe cracking on the internal fillet welds, which we find constitutes the most common fault of all.
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Replacing sections of the outer shell front and rear also part of the furnace tube on this unit involves careful planning and preparation between BTH and the client.