Badger offers repair services for A042 Transition Diffuser Ducts
As with most equipment installed near the turbine exhaust, repair or replacement is inevitable. Over time, the high gas flow velocities and operating temperatures, up to 1200°F, wear down material, and create overheating issues potentially causing premature equipment failures or exhaust leaks. The A042 Transition Diffuser Duct is one area, in particular, that is susceptible to this type of damage.
Located between the Flex Seal and the HRSG Inlet, the A042 Diffuser Duct includes insulation covered by thin gauge stainless steel liner plates that are secured in place by studs welded to scallop bars. There are hundreds of studs welded to the scallop bars that hold the liners in place while allowing them to expand and contract during cycling. The studs and bars are imbedded in dense high-temperature insulation.
Typical damage found in the A042 diffuser duct:
Maintaining the internal liner system in the duct is important to protect the fabric expansion joints and other connected equipment downstream. Badger performs On-Site Service for inspection, turnkey installation, and repair of your GE 7FA A042 Transition Diffuser Duct, Flex Seals, and the HRSG Inlet Fabric Expansion Joints.
Application Brief for Transition Diffuser Duct Repair