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A seismic safety analysis method for spent nuclear fuel grids

A spent nuclear fuel, safety analysis technology, applied in the direction of reactor fuel elements, nuclear engineering, nuclear power generation, etc., can solve problems such as unsatisfactory safety analysis, and achieve the effect of optimizing grid design

Active Publication Date: 2019-01-01
北京科瑞华安科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing design specifications cannot meet the safety analysis of the above two aspects

Method used

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  • A seismic safety analysis method for spent nuclear fuel grids

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Embodiment Construction

[0026] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0027] In order to thoroughly understand the present invention, a detailed description will be provided in the following description to illustrate the spent nuclear fuel grid safety analysis method of the present invention. Obviously, the practice of the invention is not limited to specific details familiar to those skilled in the art of nuclear power plant design. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.

[0028] Now, exemplary e...

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Abstract

The invention provides a spent nuclear fuel screenwork earthquake security analysis method which comprises the following steps: acquiring external loads under abnormal working conditions of spent nuclear fuel screenwork earthquake and accidental working conditions of earthquake; according to combination of the external loads under the abnormal working conditions of earthquake and combination of the external loads of the accidental working conditions of earthquake, calculating to obtain calculation results of displacement, stress and strain of a spent nuclear fuel screenwork under corresponding external load combination conditions, wherein the calculation results are adopted for different types of security analysis; performing earthquake security analysis on the spent nuclear fuel screenwork. By adopting the method provided by the invention, the screenwork structure strength security analysis, security analysis on collision of screenworks, and security analysis on collision of screenworks and water storage tank walls under the abnormal working conditions of earthquake and accidental working conditions of earthquake can be analyzed.

Description

technical field [0001] The invention relates to the fields of nuclear power plant design and spent nuclear fuel processing, and more specifically relates to a seismic safety analysis method for spent nuclear fuel grids. Background technique [0002] Both the pressurized water reactor nuclear power plant and the nuclear spent fuel centralized processing system in the prior art are provided with fuel storage grids. The spent nuclear fuel storage grid is arranged in the spent nuclear fuel pool to store the spent nuclear fuel assemblies unloaded from the reactor. The existing grid is placed in the pool in a freely placed form, which has greater design and installation flexibility. [0003] The existing design specifications for spent nuclear fuel grids are analyzed using the methods stipulated in the French Nuclear Power Equipment Design Code (RCC-M code for short). Its French nuclear power equipment design code only analyzes the strength of the grid structure in the seismic s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/07
CPCG21C19/07Y02E30/30
Inventor 徐鸿沈毅陈燚
Owner 北京科瑞华安科技有限公司