Impregnation and fixing

The impregnation of wooden poles is carried out in automated autoclaves using the vacuum-pressure-vacuum technology, a high-quality solution free from impurities and a chemically stable CCA (chromium, copper, arsenic) antiseptic manufactured by Osmose. The power transmission line wooden poles absorb the antiseptic at a rate of at least 12 kg per 1 cubic meter of the sapwood (in terms of dry matter).