Used vertical stainless steel AISI 316 silos with a total capacity of 2930 l. Tank has internal diameter 1260 mm and length of straight side of wall 2150 mm. Bolted flat top is equipped with a central inlet with a diameter of 460 mm and an inspection manway with a diameter of 300 mm without a cover and 2 connections. Welded conical bottom is 600 mm high and has a central discharge outlet with a pneumatically operated butterfly valve by WAMGROUP type V2FS150AI with an internal diameter of 145 mm. In the conical bottom there are mounted two nozzles for blow off the cone from the inside. Silo has 1 sensor of level mounted in the lower part of the side wall. Silo is mounted on four lugs.