We finished the work on the modernization of the gas turbine, where our task was a.o. very difficult drilling for the casings’ retaining elements. The problem we had to face is the difficult position of drilling – on the edge between two different materials, with a step or drilling into the halve of the old hole. Since the holes were arranged around the perimeter, some of them were also drilled in the ceiling position.
Drilling diagram and example of the appearance of the hole before drilling
Drilling in the ceiling position
The finished hole and the dowel
Punching a new hole