Background The Unit 4 reactor explosion at Chernobyl near Pripyat, Ukraine, happened on 26 April 1986, making news worldwide. A sarcophagus was built just after the accident with the aim of containing radioactive materials and protecting the structure, and an exclusion zone was created around the area to restrict access. In 2010, a Ukrainian law came into effect stipulating that the nuclear power plant site is to be cleaned by 2065. As a first and major step toward that goal, NOVARKA was contracted to design and build the New Safe Confinement Structure which, once completed, would enable deconstruction of the damaged reactor by others to commence. NOVARKA is a joint venture by two French companies: VINCI Construction Grands Projets and Bouygues Travaux Publics. The new structure w

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