The project refers to the construction of piperacks and shelters for the new unit Petrochemical Plant “Heavy Residue Process Complex” in Burgas of Bulgaria. Our contract included node design, the 3-D design of steel structures, fabrication and painting of a large part of the total project. The total weight of the steel elements constructed was 6.000 tons and the total surface of the cladding 15.000 m2 Particular feature of the project was the demanding quality control process and extensive the quality documentation required. 24 1