Fertilizer producers can reduce consumption and/or increase production of their plants by introducing the various revamping technologies developed by an independent company. In addition, they can upgrade single sections of their plants and have them operating more efficiently using special equipment designs and specific technologies for unit operations. With a large number of revamping projects successfully carried out in the last decades, Casale is now one the world leaders in plant revamping and its technologies are installed in many ammonia/Urea plants all over the world. In the following paper you will see some examples of different revamp projects.