Wednesday 28 January 2015

What is the difference between conversion and enrichment ?

What is the difference between conversion and enrichment ?
Ans. The process of converting the non fissile U 238 to fissile U-235 is also called "Conver¬sion". The material like U 238 which can be converted to a fissile material by the neutron flux is called "fertile material". The conversion is obtained within the nuclear reactor during the chain reac¬tion.
Enrichment is the process by which the proportion of fissile uranium isotope (U-235) is in¬creased above 0.7% (original % in natural uranium).
The concentration of U-235 in the uranium hexafluoride is increased from the 0.7% in natural uranium to 2 to 4%. This is called enrichment and is accomplished in an enrichment plant.

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