Majority of the erection works at the Berezovskaya Power Plant Project were carried on inside a 72m x 81m x 117m (height) enclosed building right next to two operating coal fired units. Inevitably; i) the works were executed at extreme heights causing safety hazards and, ii) coal dust from operating blocks was present at the work places, that endanger health of the workers. ENKA overcame these hazards by prioritizing HSE in mutual cooperation with the Owner. Another challenge faced due to working inside an enclosed building was that the work fronts were limited due to specific erection sequences which also brought about interfaces between crews executing different lines of works. ENKA was able to manage this by proper planning of the works. Further, even though the erection was being done inside a closed building, the erection sequence and the erection methods governed that in order to minimize the number of lifts (circa 2000 ea with weight of lifted blocks differing from 50 kg to 185 tons), the elements were to be preassembled to blocks of maximum liftable weights and sizes. Hence the preassembly works were mainly executed outdoors, which required ENKA to use its vast winterization experience.