二氧化铀粉末和芯块性能的测定
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- 英文论文题名：Determination of uranium dioxide powder and pellet performance
- 论文作者：田雪 ; 宋亚恒
- 英文论文作者：TIAN Xue ; SONG Ya-heng ; China Nuclear Power Engineering Co. ; LTD. ; Zhengzhou branch
- 年：2015
- 作者机构：中国核电工程有限公司郑州分公司;
- 论文关键词：二氧化铀 ; 氢 ; 密度 ; 氟
- 英文论文关键词：uranium dioxide ; hydrogen fluoride ; density
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第6册（核化学与放射化学分卷、核化工分卷）
- 语种：中文
- 分类号：TL352
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：5
- 文件大小：268k
- 原文格式：O
- 会议级别：全国
摘要
核燃料元件具有极其严格的化学成分质量标准,对构成芯体和包壳的各种成分及有害杂质的含量都必须定量测定。杂质氢在燃料元件中以芯块表面吸附水或者内部氢元素的形式存在,会使包壳氢化,即氢脆对UO_2芯块中的总氢含量必须严加控制,进行高精度的准确测定。UO_2理论密度是水堆很重要的一个设计参数,要求有高的芯块密度,使芯块在堆内运行时密度和尺寸变化较小。杂质氟对UO_2粉末制备芯块的烧结过程有不利的影响,会降低芯块的密度,同时氟会加速设备的损坏。本论文对芯块中的氢含量、粉末和芯块中氟含量、粉末和芯块的密度测定的分析方法、原理进行了综述。
The chemical composition of a nuclear fuel element is extremely strict quality standards,to constitute the core and cladding of all kinds of ingredients and the content of harmful impurity must be quantitative determination.Impurity hydrogen in fuel pellet surface adsorption or internal water exists in the form of hydrogen,can make the cladding hydrogenation,namely the hydrogen embrittlement of UO_2 pellets in the total hydrogen content must be kept under strict control,for accurate determination of the high precision.Of UO_2 theory density is an important design parameter,requires a high density of pellets,make pellets when operating in pile density and small size change.Fluorine impurities of UO_2 powder preparation of pellets sintering process has adverse effect,can reduce the density of pellets,fluorine will accelerate the damage of the equipment at the same time.In this paper,the hydrogen content in pellets,fluorine content in the powder and pellets,powder and pellet density analysis methods,instruments and equipment are reviewed,and puts forward some suggestions to the inspection method.
The chemical composition of a nuclear fuel element is extremely strict quality standards,to constitute the core and cladding of all kinds of ingredients and the content of harmful impurity must be quantitative determination.Impurity hydrogen in fuel pellet surface adsorption or internal water exists in the form of hydrogen,can make the cladding hydrogenation,namely the hydrogen embrittlement of UO_2 pellets in the total hydrogen content must be kept under strict control,for accurate determination of the high precision.Of UO_2 theory density is an important design parameter,requires a high density of pellets,make pellets when operating in pile density and small size change.Fluorine impurities of UO_2 powder preparation of pellets sintering process has adverse effect,can reduce the density of pellets,fluorine will accelerate the damage of the equipment at the same time.In this paper,the hydrogen content in pellets,fluorine content in the powder and pellets,powder and pellet density analysis methods,instruments and equipment are reviewed,and puts forward some suggestions to the inspection method.
引文
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[3]蔡文仕,舒保华,等.陶瓷二氧化铀制备[M].北京:原子能出版社,1987.
[2]石杰,等.仪器分析[M].郑州:郑州大学出版社,2003.
[3]蔡文仕,舒保华,等.陶瓷二氧化铀制备[M].北京:原子能出版社,1987.