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The mechanical analysis of the lifting devices, two trunnions in the upper part of the pressure vessel and an auxiliary bottom tail structure that connects to the lower pressure vessel flange, and the skirt flange was carried out.

Structural verification of the lifting structure (and pressure vessel close areas) during the erection process is carried out in four (4) positions – 0 / 8 / 60 / 90 degrees referred by its relative angle to the horizontal plane.