FIELD: power industry.
SUBSTANCE: invention can be used for cleaning, passivation and maintaining of the water chemistry conditions (WCC) of the working water steam path (WWSP) of steam-power generating units, subcritical parameters, including that of combined-cycle units. The method of organising of the complex technology of cleaning and passivation of internal surfaces, and also subsequent maintaining of the correcting operational WWSP WCC of the steam-power generating unit is offered which uses the techniques effecting the chemistry conditions of the water steam medium in each of three stages of the named complex technology. The method is differed by that the techniques effecting the chemistry conditions of the water steam medium in all three stages of the named complex technology use the same amine-containing chemical reagent the optimum concentration of which in the medium treated by it is selected individually for each of the named stages, and optimum parameters of the named medium are selected only for the two first stages.
EFFECT: method improvement.
3 cl
