[특허]Water reactor fuel cladding tube

Water reactor fuel cladding tube 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G21C-003/00
출원번호	US-0438555 (2007-08-13)
등록번호	US-8320515 (2012-11-27)
우선권정보	SE-0601733 (2006-08-24)
국제출원번호	PCT/SE2007/050544 (2007-08-13)
§371/§102 date	20090403 (20090403)
국제공개번호	WO2008/024059 (2008-02-28)
발명자 / 주소	Hallstadius, Lars Dahlback, Mats
출원인 / 주소	Westinghouse Electric Sweden AB
대리인 / 주소	Alston & Bird LLP
인용정보	피인용 횟수 : 0 인용 특허 : 56

초록 ▼

A water reactor fuel cladding tube (4) is described. The tube (4) comprises an outer layer (6) of a first zirconium based alloy and has metallurgically bonded thereto an inner layer (7) of a second zirconium based alloy. The inner layer protects (7) the cladding tube (4) against stress corrosion cracking. The second zirconium based alloy comprises tin as an alloying material, and each one of the zirconium based alloys comprises at least 96 percent by weight zirconium. The first zirconium based alloy comprises at least 0.1 percent by weight niobium. A method of manufacturing the cladding tube (4) is also described and comprises the step of co-extruding two tubes of different zirconium based alloys to produce the cladding tube (4).

대표청구항 ▼

1. A water reactor fuel cladding tube for a pressurized water reactor, said cladding tube comprising an outer layer of a first zirconium based alloy and having directly metallurgically bonded thereto an inner layer of a second zirconium based alloy, wherein the cladding tube does not have any further zirconium based alloy layer, wherein the inner layer is adapted to protect the cladding tube against stress corrosion cracking, wherein the second zirconium based alloy comprises tin as an alloying material, and wherein each one of the zirconium based alloys comprises at least 96 percent by weight zirconium, wherein the main alloying materials of the first zirconium based alloy are niobium, iron and tin with the content of any additional substances being below 0.05 percent by weight, wherein the first zirconium based alloy comprises oxygen; the first zirconium based alloy comprising 0.6-1.2 percent by weight niobium, 0.6-1.2 percent by weight tin, and 0.1-0.3 percent by weight iron;wherein the main alloying materials of the second zirconium based alloy are tin and iron and wherein the content of any additional substances is below 0.05 percent by weight, and wherein the second zirconium based alloy comprises 0.1-1 percent by weight tin and 0.02-0.3 percent by weight iron; andwherein the thickness of the inner layer is 5-40% of the thickness of the reactor fuel cladding tube. 2. A water reactor fuel cladding tube according to claim 1, wherein the first zirconium based alloy comprises 500-2000 ppm by weight oxygen. 3. A water reactor fuel cladding tube according to claim 1, wherein the inner layer is partially re-crystallized. 4. A water reactor fuel cladding tube according to claim 1, wherein the inner layer is fully re-crystallized. 5. A water reactor fuel cladding tube according to claim 1, wherein the outer layer is partially re-crystallized. 6. A water reactor fuel cladding tube according to claim 5, wherein the degree of re-crystallization in the outer layer is 45 percent −90 percent. 7. A water reactor fuel cladding tube according to claim 6, wherein the degree of re-crystallisation in the outer layer is 50 percent −70 percent. 8. A water reactor fuel cladding tube according to claim 1, which has been manufactured by co-extrusion of a first tube of the first zirconium based alloy and a second tube of the second zirconium based alloy. 9. A water reactor fuel cladding tube according to claim 1, wherein the thickness of the inner layer is 5-15% of the thickness of the reactor fuel cladding tube. 10. A water reactor fuel rod comprising a water reactor fuel cladding tube according to claim 1 and fuel pellets enclosed by the water reactor fuel cladding tube. 11. A water reactor fuel assembly comprising at least two fuel rods according to claim 10.

이 특허에 인용된 특허 (56)

Komatsu Kazushi (Tokyo JPX) Kido Toshiya (Tokyo JPX) Takahashi Toshimichi (Tokyo JPX) Sugano Mitsuru (Tokyo JPX) Suzuki Shigemitsu (Tokyo JPX), Alloys based on zirconium having proportional amount of tin, iron, chromium and oxygen.
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Busch Raymond A. (Benton WA) Patterson John F. (Richland WA), Bimetallic spring member for radiation environment.
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Kanno Masayoshi (Kitaibaraki JPX) Inagaki Masahisa (Hitachi JPX) Takase Iwao (Ibaraki JPX) Kuniya Jiro (Hitachi JPX) Maru Akira (Ibaraki JPX) Yasuda Tetsuro (Hitachi JPX) Maki Hideo (Katsuta JPX), Fuel assembly for nuclear reactor, method for producing the same and structural members for the same.
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Adamson Ronald B., Fuel channel and fabrication method therefor.
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Vesterlund Gunnar (Vasters SEX) Dahlback Mats (Vasters SEX), Fuel element for pressurized－water reactor with guide tubes finally heat-treated in two steps.
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Vannesj Katarina L. (Vsters SEX), Fuel rod for a nuclear reactor.
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Stehle Heinz (Marloffstein DEX) Steinberg Eckard (Erlangen DEX) Weidinger Hans (Nuremberg DEX), Fuel rod for a nuclear reactor fuel assembly.
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Stehle Heinz (Marloffstein DEX) Weidinger Hans (Nuremberg DEX) Steinberg Eckard (Erlangen DEX) Garzarolli Friedrich (Hoechstadt-Aisch DEX), Fuel rod for a nuclear reactor fuel assembly.
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Nordstrom Neal C., Functionally gradient cladding for nuclear fuel rods.
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Matsuo Yutaka (Tokyo JPX) Suda Yoshitaka (Oyama JPX) Suda Nobuo (Omiya JPX), Highly corrosion-resistant zirconium alloy for use as nuclear reactor fuel cladding material.
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Rosenbaum Herman S. (Fremont CA) Armijo Joseph S. (Saratoga CA), Inner liners for fuel cladding having zirconium barriers layers.
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Rosenbaum Herman S. (Fremont CA) Armijo Joseph S. (Saratoga CA), Inner liners for fuel cladding having zirconium barriers layers.
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Dahlback Mats (Vasters SEX), Manufacture of zirconium cladding tube with internal liner.
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Armijo Joseph S. (Saratoga CA) Rosenbaum Herman S. (Fremont CA) Williams Cedric D. (Wilmington NC), Method for making fuel cladding having zirconium barrier layers and inner liners.
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Adamson Ronald B. (Fremont CA) Potts Gerald A. (San Jose CA), Method of fabricating zircalloy tubing having high resistance to crack propagation.
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Van Swam Leonard F. P. ; Garzarolli Friedrich,DEX ; Ruhmann Heinrich,DEX, Method of manufacturing zirconium niobium tin alloys for nuclear fuel rods and structural parts for high burnup.
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Adamson Ronald B. (Fremont CA) Lutz Daniel R. (San Jose CA) Armijo Joseph S. (Saratoga CA) Rosenbaum Herman S. (Fremont CA), Nuclear fuel cladding having an alloyed zirconium barrier layer.
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Armijo Joseph S. (Saratoga CA) Coffin ; Jr. Louis F. (Schenectady NY), Nuclear fuel element.
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Armijo Joseph S. (Saratoga CA) Coffin ; Jr. Louis F. (Schenectady NY), Nuclear fuel element.
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Dahlback Mats,SEX ; Rudling Peter,SEX, Nuclear fuel element for pressurized-water reactors.
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Adamson Ronald B. (Fremont CA), Nuclear fuel element having oxidation resistant cladding.
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Mardon Jean P. (Caluire FRX) Senevat Jean (St. Brevin les Pins FRX), Nuclear fuel rod and method of manufacturing the cladding of such a rod.
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Garzarolli Friedrich (Hoechstadt-Aisch DEX) Ortlieb Erhard (Kalchreuth DEX) Steinberg Eckard (Erlangen DEX) Weidinger Hans (Nuremberg DEX), Nuclear reactor fuel assembly.
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Garzarolli, Friedrich; Steinberg, Eckard, Nuclear-reactor fuel rod with double-layer cladding tube and fuel assembly containing such a fuel rod.
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Foster John P. (Monroeville Boro PA) Sabol George P. (Murrysville Boro PA), PCI resistant light water reactor fuel cladding.
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Sabol George P. (Murrysville Boro PA) McDonald ; III Samuel G. (Monroeville PA), Process for fabricating a zirconium-niobium alloy and articles resulting therefrom.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Water reactor fuel cladding tube 원문보기

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Water reactor fuel cladding tube 원문보기

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