The use of various chemical compounds including acetates (e.g. Trilon B) as inhibitors of steel and metal corrosion is well known. However, these inhibitors often consist of several components, their concentration being quite high, and the anti-corrosion efficiency being low. These inhibitors prevent the salts sedimentation, the appearance of the crust and its extension on the surface subjected to the corrosion during the exploitation of the current systems. For enhancing the inhibition capacity sometimes in the composition of these inhibitors the toxic organic compounds, arsenic oxide(III), selene or tellurium containing salts are included , a fact which contributes to the increase of the environmental damage. The thiosemicarbazide hydrazine-1,1-diacetic acid is used as a steel corrosion inhibitor so far [1]. However, in its presence the losses of the corrosive process decrease only 6.7 times at the concentration of 0.25 g/l, and experiment duration of 72 hours. In other cases the decrease is smaller. Also there is a sudden drop of the drag γ coefficient values. As a corrosion inhibitor of the closed systems used as aqueducts the Zn(II) binuclear cluster, tetracetate-di-(1,2-cyclohexandiondioxime)-di-aqua(μ2-4,4'-bipyridyl)-di-zinc(II), [Zn2(CH3COO)4(NioxH2)2(bpy)(H2O)2] (where NioxH2 - 1,2–cyclohexandiondioxime, bpy 4,4'-bipyridyl) [2] has been studied with the concentration 0.05-1.0 g/l. With the help of different gravimetric, electrochemical and physical methods, the inhibition mechanism has been studied and it has been proven the participation of the inhibitor and its decomposition products in the formation of protective layer on the corroded steel surface and increasing stability against corrosion. The technical result of the proposed solution is the essential decrease of the losses in the corrosion process and the increasing exploitation period of water tubes. At the inhibitor concentration of 0.5 g/l, and the experiment duration of 72 hours, losses of corrosive processes decrease 9.4 times. For use the recommended concentration is within the 0.05-1.0 g/l. Thus, the effective inhibitor properties of the title compound have been demonstrated being sufficiently economical and ecological for steels in water, allowing the significant decrease of losses of corrosion processes.