MULTIFUNCTIONAL UNDERGROUND HIGH-SECURITY CONTAINMENT CHAMBER FOR UNDERGROUND NUCLEAR PLANT FACILITIES

摘要

The invention relates to a multifunctional underground high-security containment chamber for nuclear plant facilities, which can prevent radiation from escaping into the external environment in the event of nuclear accidents, terrorist attacks or extreme natural or weather events, as well as when the plant has been decommissioned or closed. The chamber prevents radiation from escaping to the exterior during the working life of the plant and forms a sarcophagus from the moment the plant is taken out of operation. The invention is formed by an underground body comprising: a lower zone which is intended to contain the nuclear reactor and which is provided with an autonomous locking device that can be activated without the need for an auxiliary drive means, which device permanently closes the chamber, forming a sarcophagus; and an upper zone including a temporary locking device, an upper conical cover that can dissipate the effects of attacks or waves, an intermediate application slab and a protective mesh thereon, as well as an upper horizontal protective slab that extends from the upper conical cover. In addition, the body of the chamber includes two peripheral structural separation lines for preventing the propagation of cracks that can occur in the lower area of the chamber.