characterisation of high-burnup LWr fueL rods through gamma tomography
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Mass Balance of the Pu and Minor Actinides Recycling Metal Fuel System
The mass flow of Plutonium and minor actinides is calculated for a future LWR-FBR fuel cycle model, in which a certain scale of power generation by LWRs is continued for a long period before the replacement by FBRs begins. The burnup of the LWR spent fuel is considered to be higher than the current standard. It is assumed that all the Plutonium and minor actinides recovered from LWRs are kept a...
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Phenomenon identification and ranking tables (PIRTs) were developed by an international group of fuel experts for three postulated accident types that are important in plant safety analysis. Rankings were determined with regard to cladding damage and fuel dispersal for high-burnup fuel rods. Developing PIRTs is a structured way of obtaining expert opinions to help improve computer codes and to ...
متن کاملAssessment of Innovative Fuel Designs for High Performance
To increase the power density and maximum allowable fuel burnup in light water reactors, new fuel rod designs are investigated. Such fuel is desirable for improving the economic performance light water reactors loaded with transuranic-bearing fuel for transmutation, as well as those using UO2 fuel. A proposal for using silicon carbide duplex as fuel cladding is investigated. The cladding consis...
متن کاملDetermination of the Transuranic Elements Inventory in High Burnup Pwr Spent Fuel Samples by Alpha Spectrometry
Determination of transuranic elements such as U, Pu, Np, Am and Cm in spent nuclear fuels is of importance for a fuel characterization, evaluation of a burnup credit, and burnup determination of spent nuclear fuels. Additionally, the exact amount of the actinide elements, as the major elements of a source term, of the spent nuclear fuels is also used for a code verification that predicts the am...
متن کاملResistance of U-233 in Spent Fuel
The factors influencing the level of U-232 contamination in U-233 are examined for heavy-water-moderated, light-water-moderated and liquid-metal cooled fast breeder reactors fueled with natural or low-enriched uranium and containing thorium mixed with the uranium or in separate target channels. U-232 decays with a 69-year half-life through 1.9-year half-life Th-228 to Tl-208, which emits a 2.6 ...
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تاریخ انتشار 2007