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The increase in infiltration was recorded while a working front, made up of 40 people, made it possible to reinforce one of the concrete buffers located between the reservoir and the auxiliary doors.
Leaks in a reservoir water supply area forced last Saturday the preventive evacuation of 140 Hidroituango Colombian hydropower workers, a work in the reconstruction and recovery phase, informed the company owner of the project.
Empresas Públicas de Medellín (EPM) said in a statement that at 17:00 local time (22:00 GMT), "it was necessary to evacuate as a precaution 105 workers from the hydroelectric project of Itango, in because of the increased infiltration presented in the reservoir's water intake area to the conductions of the power generation unit No. 4. ".
The project, which is expected to generate 17% of the country's energy and is located in the department of Antioquia (northwest), went into crisis on April 28, 2018 due to a landslide. ground that blocked the tunnel that deviates the waters of Cauca. the second largest river in the country, which have been dammed into a reservoir under construction.
The information adds that "the incident does not represent a risk for communities downstream of the dam, nor for the project itself".
According to EPM, the auxiliary hatches of units 3 and 4 were closed this Saturday night for reasons of "prevention" and the work to be done to stop the infiltrations will be evaluated.
After controlling the situation and verifying that it did not mean any risk, the Itango hydro project was resumed normally except in the area of careful infiltration.
"The staff has the support of expert security professionals at work," details the information.
The hydroelectric crisis forced EPM to allocate 103,000 million pesos (about 31.4 million dollars today / 27.9 million euros) to serve the communities in danger and to preserve the environment, especially with the wildlife rescue of the Cauca River, which faced a severe drought due to the closure of some flood gates last February
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