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Encyclopedia > SSTAR
A possible design for SSTAR.
A possible design for SSTAR.

SSTAR is an acronym for the "small, sealed, transportable, autonomous reactor" - being primarily researched and developed in the US by Lawrence Livermore National Laboratory. It is intended as a fast breeder reactor that is tamper resistant, passively safe, has a self-contained fuel source of Uranium-238 and an operative life of 30 years, which provides a constant power source between 10 and 100 megawatts. Image File history File linksMetadata SSTAR.jpg Summary SSTAR is a design for a small, sealed transportable reactor for lease to and use in undeveloped nations. ... Image File history File linksMetadata SSTAR.jpg Summary SSTAR is a design for a small, sealed transportable reactor for lease to and use in undeveloped nations. ... Core of a small nuclear reactor used for research. ... Aerial view of the lab and surrounding area. ... The fast breeder or fast breeder reactor (FBR) is a type of fast neutron reactor that produces more fissile material than it consumes. ... In the field of computer security, system hardware is said to be tamper-resistant if it is difficult to modify or subvert, even for an assailant who has physical access to the system. ... Passively safe is a form of nuclear reactor which uses the laws of physics to keep the nuclear reaction under control rather than engineered safety systems. ... There are two objects with this name: Unterseeboot 238 Uranium-238, the most common isotope of uranium This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... The megawatt (symbol: MW) is a unit for measuring power corresponding to one million (106) watts. ...


The 100 megawatt version is expected to be 15 meters high by 3 meters wide, and weigh 500 tonnes. A 10 megawatt version is expected to weigh less than 200 tonnes. To obtain the desired 30 year life span, the design calls for a moveable neutron reflector to be placed over a column of fuel. The reflector's slow downward travel over the column would cause the fuel to be burned from the top of the column to the bottom. Because the unit will be sealed, it is expected that a breeder reaction will be used to further extend the life of the fuel. Nuclear weapon designs are often divided into two classes, based on the dominant source of the nuclear weapons energy. ...


Currently, no prototypes for SSTARs exist - one is expected by 2015, and they are being researched as a possible replacement for today's light water reactors. and as a possible design for use in developing countries (which would use the reactor for several decades and then return the entire unit to the manufacturing country). A light water reactor or LWR is a thermal nuclear reactor that uses ordinary water (as opposed to heavy water) as its neutron moderator. ...


See also

The Global Nuclear Energy Partnership, announced by U.S. Department of Energy secretary Samuel Bodman on February 6, 2006, is a plan to form an international partnership to see spent nuclear fuel reprocessed in a way that renders the plutonium in it usable for nuclear fuel but not for nuclear...

External links

  • New Scientist Article
  • LLNL article

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SSTAR - Wikipedia, the free encyclopedia (269 words)
SSTAR is an acronym for the "small, sealed, transportable, autonomous reactor" - being primarily researched and developed in the US by Lawrence Livermore National Laboratory.
It is intended as a fast breeder reactor that is tamper resistant, passively safe, has a self-contained fuel source of Uranium-238 and an operative life of 30 years, which provides a constant power source between 10 and 100 megawatts.
Currently, no prototypes for SSTARs exist - one is expected by 2015, and they are being researched as a possible replacement for today's light water reactors.
  More results at FactBites »

 
 

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