Nuclear fuel rod
阅读：874发布：2022-02-03
专利汇可以提供Nuclear fuel rod专利检索，专利查询，专利分析的服务。并且A sheathed nuclear fuel rod sealed by end caps and having foamed zirconia plugs which separate and thermally insulate the end caps from the fuel material, and also provide internal support for the sheathing and for the fuel.，下面是Nuclear fuel rod专利的具体信息内容。
2. A nuclear fuel element according to claim 1 wherein said foamed ceramic plugs occupy substantially the entire space within the cladding tube between the boundaries of the fuel material and their respectively associated end caps, and are press fitted into the cladding tube to internally support same.
3. A nuclear fuel element according to claim 2 wherein said foamed ceramic plugs have a compressive strength of at least 250 p.s.i. and are crushable at a compressive stress not exceeding 900 p.s.i. to accommodate thermal expansion of the fuel material.
4. A nuclear fuel element according to claim 2 wherein said foamed ceramic plugs have a void volume at least 80 percent of the volume which they occupy within the cladding tube.
5. A nuclear fuel element according to claim 2 wherein said Foamed ceramic plugs are inert to uranium oxide based fuel material at temperatures up to approximately 1,100* C.
6. A nuclear fuel element according to claim 2 wherein said ceramic plugs are resistant to dissolution by nitric acid and by mixtures of nitric acid and hydrofluoric acid of limited concentration.
7. A nuclear fuel element according to claim 2 wherein said ceramic plugs are made of foamed zirconia.
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