FCC Catcracker

Turn-a-round

Scope of Work:
Shop fabricate and field erect a 25 feet-2 inches internal diameter by 47 feet tangent-to-tangent ASME Pressure Vessel with a 12 feet internal diameter by 30 feet long Stripper Section, consisting of SA516-Gr70 material. Total weight of 102.65 tons. Field erection included the structural steel support tower.

Work Description:
Our shop crew fabricated the Reactor in four sub-assemblies, the Stripper Section, Bottom Cone and Knuckle with the bottom shell course, Shell and Hemi-Head with the top shell course. While shop fabrication was proceeding, our field crew erected the customer furnished structural steel support for the Reactor. As parts were completed in the shop, they were shipped to the field and the Reactor was assembled in three sub-assemblies within crane radius of the Foundation. The top Head was assembled on a support structure which allowed us to install the Plenum and Cyclones at ground elevation. When field assembly was complete, the main lift crane was mobilized. The stripper section was shipped to the site and set in the support structure. The other sub-assemblies were then set, fit-up and welded out. When complete, we Hydro-tested the Reactor and then installed the Transfer lines.