Abstract
Plans are being finalized to encase the Chernobyl Reactor 4 in the worlds largest movable structure, a 20000-ton steel shell so large that indoor rain is a serious design consideration. The shell will serve two purposes, to keep [radioactive] dust in and rain out. The structure is meant to cover the old sarcophagus for the next 100 years, while over 200 tons of uranium, nearly a ton of plutonium, and other radioactive debris are extracted and prepared for more permanent disposal. The approximately 113-meter-tall shell will be equipped with four ceiling cranes that will help workers break down the reactor and remove radioactive materials. The steel structure will be built piecemeal off-site, then slid into place on greased steel plates.
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