Uneven operation allows to eliminate equipment downtime, eliminate violations of technological discipline and eliminate unproductive costs associated with deviations from the normal course of production. Unevenness of the production process of pvda extraction may not create negative consequences for other related technological processes, if this unevenness is provided. But arising in the technological process disproportions can not always be provided in advance plan and to prevent them, should create appropriate reserves (damping devices, accumulating capacity).