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The IFR is a design for a nuclear reactor with a specialized nuclear fuel cycle. A prototype of the reactor was built, but the project was cancelled before it could be copied elsewhere. 05/01/2006 10:19 AM This reactor concept is cooled by liquid sodium and fueled by a metallic alloy of uranium and plutonium. The fuel is contained in steel cladding with liquid sodium filling in the space between the fuel and the cladding. The Lead-cooled Fast Reactor features a fast-neutron-spectrum lead or lead/bismuth eutectic liquid metal-cooled reactor with a closed fuel cycle. Options include a range of plant ratings, including a "battery" of 50 to 150 MW of electricity that features a very long refueling interval, a modular system rated at 300 to 400 MW, and a large monolithic plant option at 1,200 MW. (The term battery refers to the long-life, factory-fabricated core, not to any provision for electrochemical energy conversion.) The fuel is metal or nitride- based containing fertile uranium and transuranics. The LFR is cooled by natural convection with a reactor outlet coolant temperature of 550 degrees C, possibly ranging up to 800 degrees C with advanced materials. The higher temperature enables the production of hydrogen by thermochemical processes. See also Nuclear reactor. Nuclear material. Atomic physics. Generation II reactor. Generation III reactor. = Generation IV International Forum (GIF) (http://www.gen-4.org/) = U.S. Department of Energy Office of Nuclear Energy, Science and Technology (http://gen- iv.ne.doe.gov/) = Gen IV presentation (http://www.engr.utk.edu/nuclear/colloquia/slides/Gen%20IV%20U- Tenn%20Presentation.pdf) = United States [1] (http://gen-iv.ne.doe.gov) EIS United Kingdom [2] (http://www.dti.gov.uk/energy/nuclear/technology/nuclear-fission.shtml) + Switzerland [3] (http:/Awww.psi.ch/index_e.shtml) ‘®> Republic of Korea [4] (http://www.most.go.kr/index.html) (Korean-only Web site) B= South Africa [5] (http:/;www.eskom.co.za/live/index.php) ® Japan [6] (http:/www.jaeri.go.jp/) I France [7] (http:/Awww.cea.fr/) (French-only Web site) f*l Canada [8] (http:/Awww.aecl.ca/) ES) Brazil [9] (http://www.cnen.gov.br/default2.asp) (Portuguese-only Web site) Argentina [10] (http://www.cnea.gov.ar/) (Spanish-only Web site) EBM European Union [11] (http://www.euronuclear.org/info/generation-IV.htm) Lead-Cooled Fast Reactor (LFR) Page 4 of 5 Generation IV reactor - Wikipedia, the free encyclopedia Main article: Integral Fast Reactor Lead-Cooled Fast Reactor (LFR) Main article: Lead cooled fast reactor External links Participating countries http://en.wikipedia.org/wiki/Generation_IV_reactor