HRSG Liner Plate Systems

HRSG Repair Services

Just as expansion joints are subject to extreme conditions and often require replacements, components of the HRSG such as internal liner systems, doors, or gas baffles are subject to the same environment and require maintenance as well. In scale, the biggest items covering the most square feet are the internal liner plates, there are more than 25,000 sq. ft. of liner plate in one HRSG. The number one issue for liner plate is a ’hot spot’ or missing insulation behind the plates protecting the outer casing. It's common for plants to think a simple removal and repacking of insulation can be sufficient, but this doesn’t address the root cause of the damage or prevent it from occurring again. 

IAFD has spent over fifteen (15) years making repairs, replacements and upgrades in the duct work, our scope always starts with a root cause analysis to understand where the failure/breakdown began. Once a diagnosis is complete, we first repair the weakness, then improve the surrounding materials, and finally reinsulate the cavity. This is a high-level overview of a liner plate repair because unit type, location in the machine, or flow profile will adjust our repair plan.

IAFD has repaired hundreds of thousands of square feet of duct work liner over the last decade. These repairs allowed us to see countless failures due to different causes and has helped us gather the data for our current offering; a superior upgraded liner system for your HRSG. With our engineering first approach, we dissect the various OEM’s stud patterns, attachment methods, material selection, and breakdown the failures to provide to a granular understanding how each happened. From here we deploy and test different assemblies until we arrive at a system that conquers all the weaknesses we have discovered and will stand up to the test.