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Combined On-Site Metalspray and Overlay Protects PC-Fired Boiler

Recently, IGS provided surface protection for a large utility with a 265 MW CE coal-fired boiler with Low Nox Burners and SOFA. The varying wastage rates in the different areas of the boiler, mix of erosion and corrosion issues, and previous poor performance of the existing thermalspray coating lent itself well to an IGS turnkey surface protection project. As a result, we executed automated pulse-mig welding on the boiler floor and provided Metalspray™ on the furnace walls. Previous 888 thermal spray coating applied in the past was spalling on the floor sections. IGS stripped the old coating and applied 800 sf of Inconel 622 weld overlay. Additionally, we provided a Metalspray™ coating to protect the furnace walls from reduced atmosphere corrosion. IGS successfully performed all necessary applications without any safety incidents and reduced the number of contractors with a multidisciplinary approach. For more information on IGS’ services to the Fossil Power market, click here