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Installation and Verticality Testing Method of High-Density Grid for Expansion of Spent Fuel Pool

A technology of a spent fuel pool and a detection method, which are applied in the field of installation and verticality detection of a high-density grid for capacity expansion of the spent fuel pool

Active Publication Date: 2020-10-27
GUANGDONG NUCLEAR POWER JOINT VENTURE +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for the installation and verticality detection of a high-density grid used for the expansion of spent fuel pools, aiming to solve the technology of verticality detection for newly installed grids in spent fuel pools of nuclear power plants in the prior art question

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  • Installation and Verticality Testing Method of High-Density Grid for Expansion of Spent Fuel Pool
  • Installation and Verticality Testing Method of High-Density Grid for Expansion of Spent Fuel Pool
  • Installation and Verticality Testing Method of High-Density Grid for Expansion of Spent Fuel Pool

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[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. Attached below by reference Figure 1-8 The described embodiments are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0050] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or...

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Abstract

The invention belongs to the technical field of a million-kilowatt nuclear power plant, particularly relates to an installation method and a perpendicularity detection method for high-density racks for spent fuel pool expansion. The installation method and the perpendicularity detection method include: S1: measuring unevenness in a spent fuel pool, and recording numerical values of various sites in the spent fuel pool; S2: levelling the rack with a leveling device according to measured data obtained in S1; S3: detecting overwater perpendicularity of the rack levelled in S2 through a plumb device; S4, installing the rack detected in S3 into the spent fuel pool; S5, detecting underwater perpendicularity of the rack installed in S4 through a plug device; S6, repeating the S4 to S5 to finish installation and perpendicularity detection of all the racks so as to confirm levelling between bottom portions of the new racks and the spent fuel pool and ensure that the subsequent fuel assemblies with spent fuel can be safely inserted into installation cavities of the new racks to be stored.

Description

technical field [0001] The invention belongs to the technical field of mega-kilowatt nuclear power plants, and in particular relates to a method for installing a high-density grid used for capacity expansion of spent fuel pools and detecting verticality. Background technique [0002] Spent fuel is radiation-irradiated, used nuclear fuel produced by nuclear reactors in nuclear power plants. The nuclear fuel after the nuclear reactor reaction contains a large amount of radioactive elements, so it has a large amount of radioactivity. If it is not handled properly, it will seriously affect the environment and the health of people who come into contact with them. Therefore, the spent fuel after the nuclear reactor reaction of the nuclear power plant needs to be stored in the spent fuel pool for decades until its radioactivity is reduced enough to allow subsequent reprocessing of the spent fuel. With the increasing number of domestic nuclear power plants and the continuous operat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C15/12
CPCG01C15/12
Inventor 秦强郑超雄张士朋许国兵张文利费瑞银刘健林杰东陈军琦肖伟郭振武孙新峰李琪袁亮
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE
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