The replacement and upgrade of the existing metallic expansion joint with another metal expansion joint would have required a full NDT, splicing in new section of bellow and extremely delicate welding. Alternatively, a fabric expansion joint retrofit boasted multiple advantages…

Whilst regular insulation repairs and maintenance can be intrusive, laborious and time-consuming, pumpable insulation lowers cost and shortens downtime.

The complex frame geometry at the heart of the solution gives low fatigue stress from the thermal transients caused during cycling.

The greater pressure created by the floating sleeve, combined with the unique labyrinth design and introduction of sealing air as part of the internal refractory, ensures no dust enters the expansion joint system.

Special shaping of inlet and outlet frames ensures that the entire frame surface is in contact with the gas stream and the surface facing the gas flow achieves uniform heat transfer.

DEKOMTE proposed an internally lined access hatch, suitable for retrofitting to the existing ‘cold case’ exhaust system. The solution involved a new section of liner plate with aperture fixing to integrate with the existing liner plates, ensuring the insulation will be well maintained and protected from turbulence.