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Integrated Fast Reactor: PRISM
Published in Kenneth D. Kok, Nuclear Engineering Handbook, 2016
Maria Pfeffer, Scott Pfeffer, Eric Loewen, Brett Dooies, Brian Triplett
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 TRU elements within the fuel as it generates electricity. The essence of the reactor technology is a reactor core housed within a 316 stainless steel reactor vessel. Liquid sodium is circulated within the reactor vessel and through the reactor core by four electromagnetic (EM) pumps suspended from the reactor closure head. Two intermediate heat exchangers (IHX) inside the reactor vessel remove heat for electricity generation.
Feasibility of Sodium-Cooled Breed-and-Burn Reactor with Rotational Fuel Shuffling
Published in Nuclear Science and Engineering, 2022
Van Khanh Hoang, Odmaa Sambuu, Jun Nishiyama, Toru Obara
The S-PRISM is a General Electric extension of the PRISM reactor developed by joint efforts of the U.S. Department of Energy and General Electric. The S-PRISM design has been reviewed and analyzed by many other organizations. S-PRISM is larger, has a simpler design, and is more economical than PRISM. S-PRISM has a modular design. The core has design options for metal and oxide fuel to generate a total power of 1000 MW(thermal) (Ref. 12). In this study, the core design that uses binary metallic fuel was selected as a reference core design. The reference S-PRISM metal-fueled core layout is composed of 138 driver fuel assemblies, 97 blanket fuel assemblies, 12 control assemblies, 6 gas expansion modules, 126 reflector assemblies, and 72 shield assemblies. It has an equivalent core diameter of 2.71 m and an equivalent reactor diameter of 3.62 m (Ref. 12). It uses binary metallic fuel U-10 wt% Zr and has a smear density of 75%. The structural and cladding material is HT-9 ferritic-martensitic alloy. The coolant and bond material is sodium. The fuel assemblies have a hexagonal geometry with a pitch; interduct gap; and duct thicknesses of 16.142, 0.432, and 0.394 cm, respectively. The fuel assemblies are made of 271 fuel rods with a pin pitch-to-diameter ratio (P/D) of 1.191. The fuel rods have a pin diameter, cladding thickness, and active fuel length of 0.744, 0.0559, and 101.6 cm, respectively. More detail on the S-PRISM metal-fueled core design can be found in Ref. 13.