A spent fuel pool cooling and purification system

A spent fuel pool and purification system technology, applied in the field of spent fuel pool cooling and purification systems, can solve the problems of endangering the safety of stored fuel, environmental pollution, coolant loss, etc., reduce the risk of losing cooling, improve safety and economy sexual effect

Active Publication Date: 2016-02-03
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this working method is that the principle is simple and direct, the function realization requires less equipment and the system has a large functional margin; the disadvantage is that the system pipeline is complex, there are many equipment, and they are located in different rooms or even in different areas of the power plant. Internally, the coolant may be lost during the migration cycle, endangering the safety of fuel storage. In addition, radioactive impurities may also pollute the environment due to the migration cycle of the coolant, the replacement of filter elements and resins

Method used

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  • A spent fuel pool cooling and purification system
  • A spent fuel pool cooling and purification system
  • A spent fuel pool cooling and purification system

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as Figure 1-4 As shown, a spent fuel pool cooling and purification system provided by the present invention is set in the spent fuel pool, and all major equipment is located below the operating plane 1. The system includes a cooling structure 5 located on the upper part of the spent fuel pool, and the cooling The structure 5 is parallel to the vertical direction of the pool wall.

[0023] Such as figure 2 As shown, the inner wall of the spent fuel pool is coated with a metal surface, and the metal surface 2 of the pool wall forms a cubic water body container as a whole. The cooling structure 5 is distributed around the upper part of the water body container and supported by the supporting structures 12, 13, 14.

[0024] The cooling structure 5 can be formed by a plurality of U-shaped cooling pipes arranged side by side in series...

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Abstract

The invention relates to a cooling and purifying system of a spent fuel pool. The cooling and purifying system is arranged in the spent fuel pool, and comprises a cooling structure (5) formed at the upper part of the spent fuel pool; and the cooling structure (5) is parallel to a vertical direction of a pool wall. According to the system provided by the invention, all main processes for storing spent fuel and maintenance operation can be completed in the spent fuel pool without moving and circulating a water body inside the spent fuel pool, so that risks of diffusion of radioactive matter and losing of cooling of the stored fuel are reduced, and the security and the economical benefits of fuel storage are greatly improved. Furthermore, the system can realize a foam bypass function of the surface of the spent fuel pool simultaneously.

Description

technical field [0001] The invention belongs to the technical field of spent fuel storage, and in particular relates to a spent fuel pool cooling and purification system. Background technique [0002] Spent fuel storage is an important stage of the nuclear fuel cycle. Nuclear power plants need to continuously replace new nuclear fuel and unload used spent fuel throughout their lifetime. Spent fuel has the characteristics of continuously emitting decay heat, radioactivity, and may return to criticality under certain circumstances. Therefore, for any form of nuclear power plant, the storage safety of spent fuel is an unavoidable problem. The main process of spent fuel storage includes: water cooling, filtration and desalination. In the past design of commercial nuclear power systems, these processes are usually completed outside the spent fuel pool, that is, the water in the spent fuel pool is pumped out through the pump, cooled, filtered and desalted before being discharged ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/07G21F9/00G21F9/04
CPCY02E30/30
Inventor 韩旭李军邢继刘江毛喜道
Owner CHINA NUCLEAR POWER ENG CO LTD
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