Condensates can be divided into the following groups: turbine condensates, mainly containing dissolved gases (ammonia, carbon dioxide and oxygen) and a certain amount of corrosion products (iron, copper, zinc), with suction of cooling water in them increasing salinity, hardness, sodium, silica and organic matter, and for suction of air increases the oxygen content, salinity turbine condensates may also be increased during startup and load changes on the turbine due to leaching of sediments from the steam flow path; condensates regenerative heaters (HDPE, LDPE), which usually have rather low salt content, but may contain corrosion products (iron, copper, zinc), especially during periods of connection to the work of these heaters for a couple in case of unsatisfactory exhaust non-condensable gases (Oxygen, carbon dioxide) from the vapor space; condensates boilers, heaters and raw water mains, mostly containing dissolved gases (ammonia, carbon dioxide and oxygen) and corrosion products (iron, copper, zinc), with leakages of pipe systems in these condensates increased salinity, hardness, sodium, silica and organic impurities, condensate drain tanks and tanks of low points, which are polluted mainly iron oxides, the content of dissolved gases in them is usually small, as they are removed from the evaporated from the tanks, when connected to these tanks and drainage pipes raw water mains, drain drainage sampling points network, circulating and boiler water in these condensates can increase salinity, hardness, sodium and silica, the condensates from mazutohozyaystv that may contain oil; return manufacturing process condensates from external consumers of steam, which may contain corrosion products (iron, copper, zinc), dissolved gases (ammonia, carbon dioxide and oxygen), oil and oil products, as well as other chemicals, steam-heated, very dangerous entrance to the steam circuit power with return condensate potentially acidic or alkaline compounds. Preventing pollution and its timely detection, collection and return to the steam circuit, the discharge of contaminated condensate into the drainage and equipment at lower settings, or clean it, are basic conditions for organizing water chemistry. When operating the capacitors turbines and heat exchangers need to organize a reliable chemical control of leaks in the condensate cooling, damp and water network. Control over the quality of condensate on one of the indicators – electric conductivity, hardness, sodium, alkalinity – allows us to estimate roughly the degree of contamination and all other indices based on the ratio of values of controllable parameters in water and condensate. Control the oxygen content in the condensate heat exchangers operating under vacuum, allows to take timely action to address air suction in the steam circuit. In all the heat exchangers to avoid intensification of corrosion processes should be organized in an efficient suction system (ventilation) to remove non-condensable gases (oxygen and carbon dioxide) from the vapor space. Required at each power to perform a thorough analysis of all streams (permanent and temporary) coming into the drainage tanks and tanks at low points to prevent entry into these tanks of crude, network, or circulating the boiler water, and organize chemical control over the quality of the condensate. Rationally organized scheme to collect and use condensate (condensate drainage tanks, vats low point, condensate from mazutohozyaystv), as well as heating steam condensate cvp can provide minimal contamination of feedwater corrosion products and petroleum products. Depending on local conditions can be provided as follows: discharge into the drainage of condensate during periods of maximum contamination, the direction of contaminated condensate into the thermal network or in a steam boiler tract lower settings, the direction of cleaning contaminated condensate the presence in the power plants to clean up the production of condensate or autonomous demineralization plant.