The world's largest moveable metal structure has been edged into place over an existing crumbling dome "Shelter" that the Soviets built in haste when disaster struck in 1986.
The opening ceremony of the new safe confinement was attended by the Ukrainian officials headed by President Petro Poroshenko.
The representatives of the contracting companies (Vinci, Bouygues, Novarka) also attended the opening ceremony.
The arch installation process itself started on November 14, 2016. About 224 hydraulic jacks were involved in the works.
This construction is the world's largest structure that has ever been transported this way.
At a height of 110 metres and total length of 165 metres, it is taller than New York's Statue of Liberty—while its weight of 36,000 tons is five times heavier than the Eiffel Tower in Paris.
The operation of the dome will start in November 2017. The construction is designed for 100 years.
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