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        Building Chernobyl’s MegaTomb | Engineering a Safe Confinement Structure

        Watch historic footage from Chernobyl, Ukraine, site of the world’s worst nuclear power plant disaster, and learn about a new structure being built to prevent radiation from escaping into the environment, in this media gallery from NOVA: Building Chernobyl’s MegaTomb. Thirty years after the Soviet government first sealed Chernobyl’s damaged reactor and contained the harmful gases, two French construction companies joined forces to build a massive arch to slide over the original structure and confine the radioactive debris. An American company is also developing robotic cranes suspended from the arch to later dismantle the reactor. This resource is part of the NOVA Collection.

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        Emergency Efforts to Seal a Damaged Reactor

        A deadly explosion at a nuclear power plant in Ukraine threatens the surrounding environment with radioactive contamination and prompts government efforts to seal the damaged reactor.

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        An Ambitious Solution Is Selected

        As the original structure built to contain radioactive elements begins to fall apart, the Ukrainian government selects a French team to construct a giant sliding dome to cover the reactor site.

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        Conceiving a Long-Term Cleanup Plan

        The French team considers how its design solution will not just confine radioactive debris but will also dismantle the exploded reactor.

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