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Background: It has recently become increasingly wide-spread in Russia and other countries to add complex amine compounds, which represent a mixture of volatile and surface-active amines, into the steam-water circuit for adjusting chemical conditions of drum boiler water and preservation of equipment. There are both positive and negative results of using amines to adjust chemical conditions of water at Russian thermal and nuclear power plants. Despite the long experience of using these substances in power engineering, their chemical and operating characteristics are insufficiently described in technical literature. Thus, it is urgent to make a real assessment of the physicochemical properties of amines and their solutions in thermal power plants conditions, and use the assessment results for making recommendations on the efficient application of amines. Materials and methods: The methods of quantitative chemical analysis were used to study the composition of the reagent Helamin BRW 150H. The reagent was tested both in laboratory and industrial conditions. Results: Primary chemical and technological properties of HELAMIN BRW 150H were experimentally determined in conditions of preoperational water chemical treatment of a steam boiler. An equation was suggested for descri bing mass transfer during chemical water treatment in the PGU-410 MW heat recovery boiler and for obtaining the values of its constants. The behaviour of corrosion products under water chemical treatment before and after introducing HELAMIN into the PGU-410 MW boiler circuit was studied, and recommendations were given for chemical treatment stage planning. Conclusions: The experimentally obtained data should be taken into account in the management of boiler water adjustment, which will ensure free and rapid flow of the water in the right direction under conditions most suitable for industrial

Preoperational chemical treatment of water in heat recovery boilers PGU-410 using helamin BRW 150H