Performance at the Plant

In order to make all this work of awareness and structuring really accessible, Cemig carried out structural adjustments in all the plants that offered risks to the fish during the operational maneuvers. In addition:

• With the creation of the screened grid, for example, the number of fish entering the suction reduced almost 93% in the first year of use at “Três Marias” Hydroelectric Power Plant;
• This schooling system has been automated, reducing the time for the bars to descend until the complete closure of the suction channel;
• The pipes that lead the cooling water from the plant’s generating units to the river have been lengthened to prevent fish from jumping on the concrete blocks attracted by the water;
• A seminar was held with researchers and technicians to present developed studies and discuss several aspects related to the transposition of fish in dams.