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Fuel elements for fuel assemblies

A fuel element, fuel assembly technology, applied in the direction of fuel element, reactor fuel material, measuring distance, etc.

Active Publication Date: 2017-06-23
THORIUM POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] however, all fuel elements in this assembly are made of fissile material traditionally used in reactors such as VVER-1000; thus, the generation of large quantities of reactor-grade plutonium is a particular disadvantage of reactors with such assemblies

Method used

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  • Fuel elements for fuel assemblies
  • Fuel elements for fuel assemblies
  • Fuel elements for fuel assemblies

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Embodiment Construction

[0041] figure 1 A nuclear reactor core 1 including a set of fuel assemblies 2 is shown. The fuel assembly 2 includes an ignition area and a regeneration area, and the fuel assembly 2 forms a hexagonal configuration, wherein the fuel assembly itself has a regular hexagonal form in a plan view. The core 1 has the same geometric configuration and dimensions as the core of the traditional VVER-1000 light water reactor, so the reactor will be reassembled to form a core of 163 fuel assemblies 2. The difference between the core 1 and the core of the VVER-1000 reactor lies in the composition and structure of the fuel assembly 2, as announced in more detail below. The core 1 and fuel assembly 2 provided here have been developed for use in conventional VVER-1000 light water reactors; however, similar cores and fuel assemblies can be generated for use in other standard or specially designed reactors without going beyond the present invention Range.

[0042] The core 1 is surrounded by refl...

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Abstract

The present invention relates to a fuel element for a fuel assembly of a nuclear reactor, the fuel element comprising: a core comprising a fissionable material; and a cladding enclosing the core, wherein the fuel element has multiple ribs forming helical ribs A leaf profile, wherein the helical ribs comprise a fissionable material, wherein the helical ribs have an axial twist pitch of between 5% and 20% of the length of the fuel element. None of the embodiments of the present invention generate waste that could be used to generate nuclear weapons. A new loading and unloading system is also used in the first embodiment of the invention to maximize the recirculation of seed fuel; this system also ensures that spent nuclear fuel cannot be used to create nuclear weapons.

Description

[0001] The present invention is that the international filing date is December 26, 2007, the international application number is PCT / RU2007 / 000732, the Chinese national application number is 200780102099.4, and the title of the invention is "nuclear reactor (optional), used in nuclear reactors (optional) "Ignition zone-regeneration zone sub-assembly fuel assembly and fuel element for fuel assembly" is a divisional application of the invention patent application. Technical field [0002] The present invention relates generally to the design of light water reactors in which thorium is used as fuel, and in particular to the design of unjacketed fuel assemblies that form the core of a pressurized water reactor (PWR) such as VVER-1000. Background technique [0003] Nuclear energy is an important source of energy throughout the world. Many countries that lack sufficient local fossil fuel resources rely mainly on nuclear power to generate electricity. In many other countries, nuclear en...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C3/28G21C3/58G21C3/07
CPCY02E30/30
Inventor S·M·巴什基尔采夫V·F·库兹涅佐夫V·V·克夫罗莱夫A·G·莫罗佐夫
Owner THORIUM POWER