Unique engineering feat concluded as Chernobyl arch has reached resting place
Gepubliceerd op 29 nov. 2016
Thirty years after the nuclear disaster in Chernobyl, the radioactive remains of the power plant’s destroyed reactor 4 have been safely enclosed following one of the world’s most ambitious engineering projects.
Chernobyl’s giant New Safe Confinement (NSC) was moved over a distance of 327 metres from its assembly point to its final resting place, completely enclosing a previous makeshift shelter that was hastily assembled immediately after the 1986 accident.
The equipment in the New Safe Confinement will now be connected to the new technological building which will serve as a control room for future operations inside the arch. The New Safe Confinement will be sealed off from the environment hermetically. Finally, after intensive testing of all equipment and commissioning, handover of the New Safe Confinement to the Chernobyl Nuclear Power Plant administration is expected in November 2017.
Innovative skidding
Mammoet skidded the arch from its construction site to the reactor building using a skidding system that has been specially designed for the project. The innovative and award-winning skidding system is fully remote-controlled and consists of 116 skid shoes with an average capacity of 700 tons each. The skid shoes were completely synchronized on both sides of the structure to ensure a smooth and even operation. The tracks of this system were installed in a 33 degree angle to optimize the load transfer onto the foundations.
About the New Safe Confinement
The New Safe Confinement replaces an old shelter that was installed as an emergency measure to contain the radioactive materials in the destroyed unit shortly after the disaster in 1986. It provides a controlled and weatherproof environment where the solid radioactive remains of the destroyed unit can be held for the next 100 years. At 165 meters long, 260 meters wide and 110 meters tall, the arch could house the Statue of Liberty, or the Notre Dame Cathedral. With a weight of approximately 36,200 tons, the shelter is about three times as heavy as the Eiffel Tower.
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