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Loading Method for Dry Storage of PWR Spent Fuel

A technology of spent fuel and pressurized water reactors, applied in the direction of reactor fuel elements, reactors, cooling devices, etc., can solve the problems that endanger the safety of on-site workers, achieve the effect of improving heat dissipation efficiency and protecting the effects of excessive radiation

Active Publication Date: 2020-09-18
GUANGDONG NUCLEAR POWER JOINT VENTURE +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for dry storage and loading of spent fuel in pressurized water reactors, which aims to solve the technical problem in the prior art that spent fuel will still release heat and radiation during storage and endanger the safety of on-site workers

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  • Loading Method for Dry Storage of PWR Spent Fuel
  • Loading Method for Dry Storage of PWR Spent Fuel
  • Loading Method for Dry Storage of PWR Spent Fuel

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Embodiment Construction

[0031] 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. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0032] In describing the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation...

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Abstract

The invention is applicable to the technical field of loading of spent fuel assembly in a million-kilowatt nuclear power plant, and provides a dry storage and loading method of spent fuel for a pressurized water reactor. The method comprises the following steps: preparing a spent fuel storage tank: placing the spent fuel storage tank into an inner cavity of a transfer container and then injectingwater; charging the spent fuel; first placing the spent fuel storage tank into a spent fuel pool by means of the transfer container, and then charging the spent fuel into an inner cavity of the spentfuel storage tank; sealing the spent fuel storage tank: discharging water in the transfer container, capping an opening of the inner cavity of the spent fuel storage tank for sealing, vacuumizing, andthen introducing helium; vacuumizing the inner cavity of the transfer container, and the filling the helium; storing the spent fuel: putting the spent fuel storage tank down to a concrete silo. The method guarantees the storage safety of the spent fuel, prevents the occurrence of explosion accidents, and provides physical protection and biological shielding for the spent fuel storage tank; furthermore, the heat in the spent fuel storage tank is led out in an unworkable manner.

Description

technical field [0001] The invention belongs to the technical field of loading spent fuel components of mega-kilowatt nuclear power plants, and in particular relates to a method for dry storage and loading of spent fuel of a pressurized water reactor. Background technique [0002] During the operation of nuclear power plants, spent fuel will be produced. A nuclear power unit with a power of one million kilowatts will produce tens of tons of spent fuel every year. According to my country's nuclear power development plan, after 2020, the amount of spent fuel produced in my country will exceed 1,000 tons per year, and the storage and treatment of spent fuel will become an important issue that the country needs to consider. [0003] According to the policy of a national nuclear energy strategy, different disposal measures can be adopted for the spent fuel discharged after the operation of the nuclear power plant reactor. Separation and recycling, solidification of useless fissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/07G21C15/18
CPCG21C15/18G21C19/07Y02E30/30
Inventor 郑超雄赵笑苹李茂云冯聚现莫怀森
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE
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