ABSTRACT
The Power Reactor Inherently Safe Module (PRISM), designed by GE Hitachi Nuclear Energy, is a small, modular, sodium-cooled fast reactor. The PRISM core is located in a pool-type containment vessel and is fueled with metallic fuel. PRISM employs passive safety, digital instrumentation and control, and modular fabrication techniques to expedite plant construction. PRISM is a fast neutron reactor plant design with passive reactor shutdown, passive shutdown heat removal, and passive reactor cavity cooling. PRISM supports a sustainable and flexible fuel cycle to consume transuranic elements within the fuel as it generates electricity. The PRISM reactors are positioned in a power block with two reactors side by side supporting a single steam turbine generator set. The reactor plant is divided into two areas: the nuclear island and the turbine island to generate electricity. A feature of the PRISM reactor is the reactor vessel auxiliary cooling system.
