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Fuel bar for fast reactor

A technology for fast reactors and fuel rods, applied in measuring devices, surveying and navigation, instruments, etc., can solve problems such as increasing the cost of fuel rods, and achieve the effect of reducing the possibility

Active Publication Date: 2010-02-17
AKZIONERNOE OBSCHESTVO OTKRYTOGO TIPA MASHINOSTROITELNY ZAVOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the increase in nickel content greatly increases the cost of fuel rods

Method used

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  • Fuel bar for fast reactor
  • Fuel bar for fast reactor

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Embodiment Construction

[0021] Data demonstrating the possibility of providing the present invention

[0022] figure 1 The fuel rods 1 of the fast reactor shown in include a cylindrical cladding 2 with nuclear fuel inside, for example in the form of pellets 3 . The outer diameter D of the cladding is 5.9 mm to 7.5 mm, and the wall thickness h of the cladding is 0.25 mm to 0.55 mm. The cladding is made of steel with the following composition, weight percent: carbon-(0.05-0.08), silicon-(0.3-0.6), manganese-(1.0-2.0), sulfur-not more than 0.012, phosphorus-not more than 0.020, Chromium (15.5-17.0), nickel (14.0-15.5), molybdenum (1.9-2.5), titanium (0.2-0.5), vanadium (0.1-0.3), boron (0.002-0.005), nitrogen not exceeding 0.02, cobalt not exceeding 0.02, not more than 0.1 for aluminum, magnesium (0.0001-0.005), calcium (0.0005-0.005), and iron for the rest, wherein the content ratio of titanium to carbon can be close to at least 4. The outer diameter D of the cladding is preferably 6.0±0.02 mm and t...

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Abstract

The invention relates to a fast reaction pile fuel bar design of liquid mental coolant such as Na in the field of nuclear technology. The fast reaction pile fuel bar is formed by cylinder coated layerwith 5.9mm-7.5mm dilemma and 0.25mm-0.55mm thickness layer wall. The coated layer is formed by the steel with the following elements (by weight ration): carbon (0.05~0.08), silicon(0.3~0.6), manganese (1.0~2.0), sulfur <= 0.012, phosphor <= 0.020, chromium (15.5~17.0), nickel (14.0~15.5), molybdenum (1.9~2.5), titanium (0.2~0.5), vanadium (0.1~0.3), boron (0.002~0.005), nitrogen <= 0.02, cobalt <= 0.02, magnesium (0.0001~0.005), calcium (0.0005~0.005), other is iron, wherein the content ratio of titanium to iron is at least 4. The external coated later dilemma is 6.0+ / -0.02mm, and the wall thickness is 0.3+ / -0.1mm.

Description

technical field [0001] The present invention relates to nuclear technology and in particular to the design of fuel rods for fast reactors with liquid metal coolants such as sodium. Background technique [0002] In applying strong requirements on radiation swelling resistance, interaction between fuel rod cladding and fission products of nuclear fuel, embrittlement during prolonged and intense radiation and corrosion resistance in liquid-metal coolant-sodium Structural materials for handling fuel rod cladding in fast reactor cores. These materials are also resistant to high plasticity, long-term strength, low creep rate at a temperature of (700-850) °C (in the heat-replenishment area on the internal surface of the fuel rod cladding), and the resistance caused by changing the cooling environment. High resistance to low cycle fatigue and thermal shock, high radiation resistance in fast neutron flux presents a need for enhancement. Austenitic steels, which are already well sui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C3/07
CPCY02E30/40Y02E30/30
Inventor 布达诺夫·尤里·帕夫洛维奇采利谢夫·安德烈·瓦西里耶维奇奥什卡诺夫·尼古拉·尼古拉耶维奇科罗斯京·奥列格·斯捷潘诺维奇波托斯卡耶夫·根纳季·格奥尔基耶维奇比比拉什维利·尤里·康斯坦丁诺维奇梅德韦杰夫·阿纳托利·瓦西里耶维奇克留科夫·奥列格·瓦西里耶维奇贝克·叶夫根尼·格列博维奇贝奇科夫·谢尔盖·阿纳托利耶维奇
Owner AKZIONERNOE OBSCHESTVO OTKRYTOGO TIPA MASHINOSTROITELNY ZAVOD