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The program for the development o f the Advanced Liquid Metal Cooled Reactor (ALMR) , based upon the PRISM concept which was initiated by GE in 1981, is proceeding under the sponsorship of the U.S. Department of Energy. This activity i s currently viewed as a national program ahd is being carried out by a team invulving w i d e participation by U . S . Industry, National Laboratories, and international organizations in the advanced conceptual design phase, with key development and testing tasks proceeding i n parallel. The ALMR features simple and reliable safety systems, seismic isolation, passive decay heat removal, natural reactivity control, and generous margins against structural and fuel damage. A major goal of the program is to achieve a standard design ,certification by the U . S . Nuclear Regulatory Commission by about the year 2005.

The U.S. program for development of an advanced liquid metal reactor (ALMR) is proceeding by a national team under Department of Energy (DOE) sponsorship, with expected utility and international participation. The PRISM reactor concept originated by General Electric, in conjunction with the metal fuel cycle under development by Argonne National Laboratory, has been selected as the reference concept for the ALMR. The design emphasizes passive safety features, modular construction, factory fabrication, capability (when needed) to breed substantially more fissionable material than it consumes, recycle and burning" of actinides to reduce the storage time requirements for long-1 ife, high-level radioactive wastes, and testing of a full-size reactor prototype for design certification and licensing.