快堆嬗变燃料(U-Np)O_2芯块制备工艺研究
详细信息 查看官网全文
摘要
分离-嬗变被认为是处置反应堆高放废物,实现闭式核燃料循环的根本途径。快堆的高能中子谱具有较高的嬗变效率,因此快堆被认为是最有效的嬗变装置。本文研究了UO_2和NpO_2粉末的两步混合、贫UO_2-5wt%NpO_2芯块压制及烧结等工艺过程。采用优化的压制及烧结工艺参数研制出密度达到92±1%TD、平均晶粒尺寸8~20μm、杂质含量低于850 ppm的快堆嬗变贫UO_2-5wt%NpO_2芯块。芯块不进行磨削可满足直接装管对尺寸精度的要求,芯块数量至少满足1盒靶件组装需要。
引文
[1]Koch L.Status of Transmutation,Use of fast reactors for actinide transmutation.IAEA2TECDOC2693,1993
[2]M A SMITH,E E MORRIS,R N HILL."Physics and Safety Studies of Low Conversion Ratio Sodium Cooled Fast Reactors",Global 2003,New Orleans,Louisiana,United States,pp.423-433,November 16-20(2003).
[3]Jean-Paul Grouiller Sylvie Pillon Cyrille de Saint Jean Minor actinides transmutation scenario studieswith PWRs,FRs and moderated targets Journal of Nuclear Materials 320(2003)163-169.
[4]Steinberg M,Wotzak G.Burning of long-lived fission products for waste disposal.BNL-8585,1964.
[5]Jon Carmack,Kemal O.Pasamehmetoglu.Review of Transmutation Fuel Studies.2008.
[6]K Fukuda,J-S Choi,R Shani,et al.Sartori MOX fuel use as a back-end option:Trends,main issues and impacts on fuel cycle management(IAEA-SM-358/I).
[2]M A SMITH,E E MORRIS,R N HILL."Physics and Safety Studies of Low Conversion Ratio Sodium Cooled Fast Reactors",Global 2003,New Orleans,Louisiana,United States,pp.423-433,November 16-20(2003).
[3]Jean-Paul Grouiller Sylvie Pillon Cyrille de Saint Jean Minor actinides transmutation scenario studieswith PWRs,FRs and moderated targets Journal of Nuclear Materials 320(2003)163-169.
[4]Steinberg M,Wotzak G.Burning of long-lived fission products for waste disposal.BNL-8585,1964.
[5]Jon Carmack,Kemal O.Pasamehmetoglu.Review of Transmutation Fuel Studies.2008.
[6]K Fukuda,J-S Choi,R Shani,et al.Sartori MOX fuel use as a back-end option:Trends,main issues and impacts on fuel cycle management(IAEA-SM-358/I).