At the request of the Lithuanian Government, ALSTOM HYDRO carried out a rehabilitation project on the KAUNAS Hydroelectric Plant with the objective of increasing the performance of the four turbines.

For this purpose, ALSTOM HYDRO has selected TACQUET INDUSTRIES among the three companies in the world able to perform on-site machining operations. These operations were usually carried out in a heavy workshop.

TACQUET INDUSTRIES carried out the feasibility study, designed a specific machine unique in the world to execute various works on hydroelectric sites and achieved all the machining operations on the turbines.

During a turbine maintenance, when the FRANCIS wheel was dismantled by ALSTOM HYDRO, the customer found an extremely large cavitation with, in some places, a complete piercing of the protective shield.

In order to ensure the optimum restart of the installation on schedule, ALSTOM HYDRO contacted TACQUET INDUSTRIES in order to carry out a feasibility study and perform the work within the deadline.

The hydroelectric dam of GURI, located in the center of VENEZUELA near PUERTA ORDAZ, is the third largest hydroelectric dam in the world and has 16 turbines.

The Government of Venezuela decided to rehabilitate all the installations of the site in 2 phases, the first of which was entrusted to ALSTOM HYDRO. This rehabilitation affects 8 groups out of a total of 16.

Previously, the maintenance operations carried out on the GURI site had necessitated the dismantling of the damaged parts, their transport throughout the world in multiple workshops, their return to Venezuela and, finally, the reassembly of the parts on the site.

All of these operations represented very long periods of intervention. In order to increase the effectiveness of the intervention, ALSTOM HYDRO studied an innovative approach proposing to realize all the services directly on the site of GURI with portable machining equipment.

ALSTOM HYDRO, after study, entrusted TACQUET INDUSTRIES with the design and manufacture of two portable lathes for machining up to 8.5 meters in diameter.