کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8067051 | 1521080 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tungsten Carbide compact primary shielding for Small Medium Reactor
ترجمه فارسی عنوان
محافظ صفحه اصلی کاربید تنگستن برای راکتور کوچک
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کلمات کلیدی
کاربید تنگستن، اشعه نوترون و گاما، محافظ پرتوهای اولیه، راکتور کوچک کوچک، بهینه سازی حجم وزن،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
In order to improve the Small Medium Reactor's radiation protection system, a new design for primary radiation shielding based on Tungsten Carbide and Lead is presented. The application of Tungsten Carbide is considered, so that a compromise between low weight and high absorption is found, to achieve allowed radiation dose rate after reactor shutdown. Its high density and the presence of Carbon nuclei, makes this material an interesting shielding against photons and fast neutrons as well, leading to an original design. Tungsten Carbide is arranged in absorbing rods of 17.05â¯mm inner diameter with a pitch of 20â¯mm, voids between absorbing rods are filled with Lead in order to increase the self-shielding of the structure. Design process is illustrated with an application example for a hypothetical 200â¯MW Small Medium Reactor. Radiation source was quantified with ORIGEN code and radiation transport throughout shielding was calculated with MCNP5 code. The result was a shielding of 31â¯cm thickness and 150â¯MT of weight. The maximum dose rate was 3â¯ÂµSv/h, after 83â¯min since reactor shutdown.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 116, June 2018, Pages 210-223
Journal: Annals of Nuclear Energy - Volume 116, June 2018, Pages 210-223
نویسندگان
M.A.N. Giménez, E.M. Lopasso,