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FCN - Enrichment

By using some of the facilities from Steel mill Fuel Nuclear from INB em Enumeration RJ , she meets - if em introduce the first plant of value upgrading isotópico of uranium em she climbs industry constituída of cascade of ultracentrífugas developed & supplied at Center Technological from Marine em São Paul CTMSP ).

 

The first from the ten cascade hired the CTMSP was inaugurated em 2006. She foresees - if about to end of 2012 the conclusion of the first phase of the achievement , realizing the total of ten cascade assembled into four modules , what furnish the quantity of enriched uranium for production of fuels nuclear about to supply of 100% from the necessities of the reacting of BAY 1 & 20% of ANGRA 2.

 

The maintenance of the domain of the I sue of value upgrading isotópico of uranium for ultracentrifugação , intermediary the continued technological progress & she sweats application industry , coated - if of importance technological , strategic & economic about to the nation.

She envelops the application of technologies sofisticadas , whose domain & sign-on são restricted the few countries. She renders about 35% of the cost total of manufacture of the fuel nuclear.

 

The reactors the water light PWR Pressurized Water Reactor adopting at Brazil for generation of nucleus - electricity , uses em she sweats operation the uranium lightly enriched into the isótopo uranium 235, what , the suffer fission , generates energy thermal into the DOS shell reacting.

 

Various processes of value upgrading were developed em laboratories , but only two their they operate em largess she climbs industry : the diffusion soda & the ultracentrifugação. The organizations landlady of factories of diffusion soda , for reasons techniques & economic they started the she sweats disables , at the same moment what program the introduce of units industries of ultracentrifugação.

 

 

The process physical of ultracentrifugação separa the isótopos uranium 235 & 238, adding the concentration of the isótopo físsil uranium 235 of 0,7%, I eat encountered on nature , about to about 4%.

 

The ultracentrífuga the gas ( in the event of UF6) that's a cylinder vertical delicate that rotates to a velocidade extremely high inside from a housing with vacuum. A camp of she forces ultracentrífuga generated inside of the cylinder em rotation ( rotor separa the different isótopos up from direction radial. A flux axial of contracorrente is established to enlarge the breakup from the isótopos. In practice , the efficiency from a ultracentrífuga the gas depends on the speed peripheral & of the length of the rotor , of the rate axial of recirculação & of the rate of feed from machine. The begining of funcionamento from a ultracentrífuga the gas is illustrated on figure below.

I eat large quantities of material enriched são necessary the supply from the fuels nuclear , & the production for element separator is diminutive , uses - if industrialmente the coupling of innumerable elements separators em parallel , forming the configuration acquaintance I eat “estágio of separation. Analogamente , I eat the outcome of separation em each stage is little , the increment into the content of value upgrading of the flow enriched is down , so there are , necessity of interligar the stage em series , forming the configuration call “cascata”. Then , about to if obtain products with the contents wanted em she climbs industry , it follows that what a mill of value upgrading it comprises innumerable cascade constituídas of elements of separation isotópica interligados em series & parallel , by means of tubing concerning aos flows of uranium of feed & removal of enriched uranium & impoverish.