Radioactive capture system for severe accident containment of light water reactors (LWRs), and method thereof

摘要

A system (100) and a method for capturing gaseous, particulate and liquid radioactive material released from primary containment (3) of a Light Water Reactor (LWR) during severe accident conditions. The system includes a below-grade media area (4), connected to a reactor pressure vessel (RPV) and portions of primary containment (3), providing varying levels of adsorption / absorption of the radioactive material. The media area (4) is located on-site to offer a passive, self-regulating structure for stabilizing a nuclear reactor. The capture system provides for liquid drainage and gaseous venting of the radioactive material, and a treatment capable of treating the media following stabilization of the reactor.