One of the largest tanks located in the tower, Millenium Plaza, have a volume of 40 000 L. The ground floor is a sea container and on the fifth floor, freshwater tank. We took over the tanks  when the owner, decided to dismantle them. This work was a challenge, because there was no technical documentation, and all piping has been made ​​with the materials imported from the USA, which differs from Polish standard . Start-up period lasted for over two months and after this period,  we managed to start two tanks.