Scope of Work
Cianbro erected a 120 ton, 6 column steel structure to support the new 255 ton SCR duct work module. In addition, 255 tons of ductwork sections, ranging in size of up to 40 ft x 22 ft, with weights in excess of 50,000 lbs per section, were erected. The SCR module consists of 50 individual ¼ inch thick steel plate duct sections, which were erected and welded to create the new flue gas bypass routing. 

Project Details

• Placed 120 cy of concrete for the CIP spread footing foundation
• Erected a 54 ft x 22 ft x 70 ft, 6 column steel structure, which will serve as support for over 250 tons of steel plate ductwork, making-up the heart of the SCR unit
• Performed 3,500 lf of welding in order to seal the ductwork 
• Relocated the existing air heater ductwork
• Constructed a CIP concrete tank storage area
• Installed a concrete aqueous ammonia unloading and storage area, along with several hundred ft of a stainless steel forwarding piping system and carbon airline
• Installed an electrical system for motors, lighting, and sensors
• Ran conduit and cable tray runs in order to link various sensors in the unit to the main PLC, which monitors the flue gas for temperature and pollutant reduction
• Performed all duct work tie-ins during plant outages