U3Si2 түлштэй түлшээ үржүүлэн шатаах хурдан реакторын голомтын дизайны харьцуулалт
DOI:
https://doi.org/10.22353/physics.v39i631.10496Abstract
Tүлшээ үржүүлэн шатаадаг хурдан реактор нь цөмийн эрчим хүчний реакторын дэвшилтэт нэг төрөл бөгөөд үүнийг барьж ашигласнаар байгалийн эсвэл бага баяжуулсан уран түлш хэрэглэх тул ураны нөөцөө үр дүнтэй ашиглах, ашигласан цөмийн түлшний хэмжээг багасгах, цөмийн ашигласан түлш дахин боловсруулах өртөг өндөртэй үйлдвэрийн хомсдолыг нөхөх зэрэг олон асуудлыг шийдэх боломжтой юм.
Шингэн натри болон хар тугалга нь нейтроны алдагдал болон дулаан зайлуулах шинж чанараараа өөр өөр тул ижил чадал үйлдвэрлэхэд эдгээр хөргүүр бүхий голомтын дизайн ялгаатай байж, нейтроникийн гүйцэтгэлийг харьцуулах шаардлагатай. Иймд энэ ажлын гол зорилго нь ураны нягт өндөртэй цахиурт уран (U3Si2) түлш бүхий натри эсвэл хар тугалга хөргүүртэй түлшээ үржүүлэн шатаадаг хурдан реакторийн голомтын дизайн хийж харьцуулна. Цахиурт уран түлш нь голдуу судалгааны реакторт ашиглагдаж байсан ба хурдан реакторын уламжлалт түлш болох метал түлштэй өрсөлдөхүйц байж болно.
Энэхүү ажлаар 750 МВт чадалтай, цахиурт уран (U3Si2) түлштэй, шингэн натри эсвэл шингэн хар тугалга хөргөлттэй, сэлгэн байрлуулах схемтэй, түлшээ үржүүлэн шатаах хурдан реакторын эхлэл голомтын дизайн хийж, түлшний шаталтын анализ гүйцэтгэн нейтроникийн үзүүлэлтийг тодорхойлон харьцуулав.
[ English ]
A breed-and-burn (B&B) fast reactor is an advanced type of nuclear power reactor. By building and utilizing it, it can use natural or low-enriched uranium fuel, which can solve many problems, such as efficiently using uranium resources, reducing the amount of spent nuclear fuel, and compensating the shortage of the expensive spent nuclear fuel reprocessing plant.
Liquid sodium and lead have different features on neutron loss and heat removal characteristics, so to produce the same power, the core design with these coolants must be different and the neutronic performances have to be compared.
Therefore, the main objective of this work is to design and compare a breed-and-burn fast reactor core with sodium or lead coolants, using high-density uranium silicide (U3Si2) fuel. Uranium silicide fuel has been used primarily in research reactors and may be competitive with metal fuel, the traditional fuel for fast reactors.
In this work, the design of the start-up core of a 750 MW, uranium silicide (U3Si2) fueled, liquid sodium or liquid lead cooled, breed-and-burn fast reactor with a shuffling scheme was designed, fuel burnup analysis was performed, and neutronic parameters were determined and compared.
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