Kemira manages several residual material management projects produced by steel mills. This residual material must be emptied from the tanks and treated according to the exact composition and density of the product collected. Currently, the determination of the composition and density of the product is done by the truckers who collect the residual material. This determination is not only imprecise but also involves inefficient transport logistics. Indeed, the product is often transported to a destination that cannot process it, involving several unnecessary transport movements. The objective of the SEP project is twofold. First, to propose a material architecture in order to determine the composition and density of the product in situ (in the tanks) and second to map the current supply chain. These two objectives will make it possible to calculate the return on investment of an integrated strategy (measurement and logistics) for the management of residual materials from steelworks.