We successfully improved the configuration of the existing primary fumes by-pass line in our Vicenza’s site in partnership with INTECO Melting and Casting Technologies GmbH. The installation allows a good performance of the primary EAF fume line without the help of a booster fan, permitting energysaving while limiting maintenance activities. Four dampers have been revamped on the existing secondary fume line. These operations required a challenging activity at an height of 36 meters elevation under the existing duct. This installation is the first step of the EAF Primary Emission line Revamping in order to continuously improve the energy and global efficiency of the dedusting plant.