Fuel rod cladding and methods for making and using same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G21C-003/07
G21C-003/20
G21C-021/02
C22C-027/04
출원번호
US-0016008
(2013-08-30)
등록번호
US-10217533
(2019-02-26)
발명자
/ 주소
Cheng, Bo-Ching
출원인 / 주소
Electric Power Research Institute, Inc.
대리인 / 주소
Owens Law Firm, PC
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
In general, the present invention is directed to novel nuclear fuel rod claddings that have better performance characteristics compared to current claddings, particularly during a severe accident, such as a loss of coolant accident. The present invention provides a duplex cladding having two layers,
In general, the present invention is directed to novel nuclear fuel rod claddings that have better performance characteristics compared to current claddings, particularly during a severe accident, such as a loss of coolant accident. The present invention provides a duplex cladding having two layers, an inner Mo or Mo-alloy layer and a protective layer disposed on the outside of the Mo or Mo-alloy layer. Optionally, the Mo or Mo-alloy layer may have a coating disposed on its inner surface to provide additional capability with the fuel pellets, thereby creating a triplex cladding.
대표청구항▼
1. A fuel rod cladding, comprising: A triplex cladding having a first layer, a second layer, and a third layer disposed between said first layer and said second layer, wherein said third layer comprises molybdenum having a concentration of 98% or more by weight, and wherein said first layer is an ou
1. A fuel rod cladding, comprising: A triplex cladding having a first layer, a second layer, and a third layer disposed between said first layer and said second layer, wherein said third layer comprises molybdenum having a concentration of 98% or more by weight, and wherein said first layer is an outermost layer and said second layer is an innermost layer. 2. The fuel rod cladding of claim 1, wherein said third layer is pure molybdenum. 3. The fuel rod cladding of claim 1, wherein said third layer further comprises lanthanum oxide. 4. The fuel rod cladding of claim 1, wherein said first layer comprises a composition that upon exposure to oxygen forms an oxide layer. 5. The fuel rod cladding of claim 1, wherein said first layer comprises a zirconium alloy. 6. The fuel rod cladding of claim 1, wherein said first layer comprises an aluminum-containing stainless steel. 7. The fuel rod cladding of claim 1, wherein said second layer is compatible with fuel pellets held by the fuel rod cladding. 8. The fuel rod cladding of claim 1, wherein said second layer comprises a zirconium alloy. 9. The fuel rod cladding of claim 8, wherein said first layer comprises a zirconium alloy. 10. A fuel rod cladding, comprising: a triplex cladding having a first layer, a second layer, and a third layer disposed between said first layer and said second layer, wherein said third layer comprises molybdenum having a concentration of 98% or more by weight; and wherein said first layer, said second layer, and said third layer comprise a cylindrical shape and form an annulus for receipt of nuclear fuel pellets, wherein said first layer is the outermost layer of said cylindrical shape and said second layer is the innermost layer of said cylindrical shape. 11. The fuel rod cladding of claim 10, wherein said third layer is pure molybdenum. 12. The fuel rod cladding of claim 10, wherein said third layer further comprises lanthanum oxide. 13. The fuel rod cladding of claim 10, wherein said first layer comprises a composition that upon exposure to oxygen forms an oxide layer. 14. The fuel rod cladding of claim 10, wherein said first layer comprises a zirconium alloy. 15. The fuel rod cladding of claim 10, wherein said first layer comprises an aluminum-containing stainless steel. 16. The fuel rod cladding of claim 10, wherein said second layer is compatible with fuel pellets held by the fuel rod cladding. 17. The fuel rod cladding of claim 10, wherein said second layer comprises a zirconium alloy. 18. The fuel rod cladding of claim 17, wherein said first layer comprises a zirconium alloy. 19. A fuel rod cladding, comprising: a triplex cladding consisting essentially of a first layer, a second layer, and a third layer disposed between said first layer and said second layer, wherein said third layer comprises molybdenum having a concentration of 98% or more by weight. 20. The fuel rod cladding of claim 19, wherein said first layer, said second layer, and said third layer comprise a cylindrical shape and form an annulus for receipt of nuclear fuel pellets, wherein said first layer is the outermost layer of said cylindrical shape and said second layer is the innermost layer of said cylindrical shape. 21. The fuel rod cladding of claim 20, wherein said third layer is pure molybdenum.
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이 특허에 인용된 특허 (8)
Hultquist,Gunnar; Limb?ck,Magnus; Wikmark,Gunnar, Component including a zirconium alloy, a method for producing said component, and a nuclear plant including said component.
Adamson Ronald B. (Fremont CA) Lutz Daniel R. (San Jose CA), Process for improving corrosion resistance of zirconium or zirconium alloy barrier cladding.
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