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Stowage method of million kilowatt units principal circle reactor core of Chinese press water stack nuclear power station

A pressurized water reactor nuclear power plant and first cycle technology, applied in nuclear power generation, assembly of fuel elements, nuclear engineering, etc., can solve the problems of inflexible design, excessive radioactive waste, unfavorable environmental protection, etc., to achieve environmental protection and reduce radioactivity Effects of waste, high economy and operational flexibility

Active Publication Date: 2008-07-23
GUANGDONG NUCLEAR POWER JOINT VENTURE
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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a first-cycle core loading method for a one-million-kilowatt unit of a pressurized water reactor nuclear power plant in China, aiming to solve the problem of using traditional boron glass as a combustible poison in the first cycle, which leads to a lot of radioactive waste, is not conducive to environmental protection, and is not good for design. flexible question

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  • Stowage method of million kilowatt units principal circle reactor core of Chinese press water stack nuclear power station

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Embodiment Construction

[0009] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0010] In the embodiment of the present invention, in the first cycle, gadolinium is used as the burnable poison, and the in-stack arrangement of fuel assemblies is changed to achieve a cycle length of 346 equivalent full power days in the first cycle.

[0011] The reactor core of the pressurized water reactor nuclear power plant is composed of 157 sets of AFA3G fuel assemblies of all M5 materials. The height of the core fuel active section is 365.76cm, the equivalent diameter is 304.04cm, and the height-to-diameter ratio is 1.203. The fuel rods of each full M5 AFA 3G fuel assembly are arranged in ...

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Abstract

The invention is applied to the field of in-core fuel management of pressurized water reactors, providing an in-core loading method in first cycle of million-kilowatt machine set in pressurized water reactor nuclear power plants in China. The method uses gadolinium as burnable poison in the first cycle. The practical example of the invention uses gadolinium as burnable poison, which reduces radioactive waste and is in favor of environmental protection.

Description

technical field [0001] The invention belongs to the field of pressurized water reactor core fuel management, and in particular relates to a first-cycle core loading method of a one-million-kilowatt unit of a pressurized water reactor nuclear power plant in China. Background technique [0002] In the reactor core fuel assembly layout of the pressurized water reactor nuclear power plant, the traditional reactor core fuel assembly uses boron glass as the burnable poison in the first cycle, and the core fuel assembly is divided into three enrichment areas according to the enrichment degree. The enrichment degrees of the regions are 1.8%, 2.4%, and 3.1%, respectively. The fuel assembly with an enrichment degree of 1.8% does not contain burnable poisons, and the fuel assemblies with an enrichment degree of 2.4% and 3.1% both contain boron glass burnable poisons. [0003] Under the premise of meeting various safety standards, boron glass combustible poison is used in the first cyc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/00G21C3/00G21C3/02G21C3/32
CPCY02E30/30
Inventor 高立刚韩庆浩肖岷李雷厉井钢戴忠华李晓明
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE
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