The New Safe Confinement (NSC or New Shelter) is a structure built to confine the remains of the number 4 reactor unit at the Chernobyl Nuclear Power Plant, which was destroyed during the Chernobyl disaster in 1986. The structure also encloses the temporary Shelter Object (sarcophagus) that was built around the reactor immediately after the disaster. The New Safe Confinement is designed to prevent the release of radioactive contaminants from the existing shelter, protect the reactor from external influence, facilitate the disassembly and decommissioning of the reactor, and prevent water intrusion.[3]