Spent fuel pool volume expanding method

A technology for spent fuel pool and spent fuel, which is applied in the fields of reactor fuel elements, reactors, and greenhouse gas reduction, etc., can solve the problem of the spent fuel pool failing to fully exert its storage capacity, etc., and achieves improved criticality safety, low manufacturing cost, high The effect of critical safety

Inactive Publication Date: 2016-12-14
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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Problems solved by technology

In the third-generation nuclear power AP1000 support project, in order to meet the requirements of China's nuclear safety guidelines HAD102/15, the spent fuel storage grid has sealed off the storage cavity of

Method used

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  • Spent fuel pool volume expanding method
  • Spent fuel pool volume expanding method
  • Spent fuel pool volume expanding method

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Embodiment Construction

[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Such as figure 1 As shown, in the spent fuel pool, grids 11 in zone I and grids 12 in zone II are arranged, and part of the storage cavity of grid 12 in zone II is filled with sealing parts 13, which cannot store fuel assemblies, and the actual storage capacity is smaller than the original design plan , theoretically can only meet the storage requirements of 9 balanced refueling times, resulting in the failure of the spent fuel pool to fully utilize its storage capacity.

[0026] Such as Figure 2-6 As shown, the method for expanding the capacity of the spent fuel pool includes the steps of: after taking out the blocking member 13 in the grid frame 12 of the II zone of the spent fuel pool (such as figure 1 shown), and sto...

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Abstract

The invention provides a spent fuel pool volume expanding method. The spent fuel pool volume expanding method comprises the steps that after a plugging part in a II-zone grid frame of a spent fuel pool is taken out, spent fuel assemblies are stored in corresponding storage cavities in the II-zone grid frame; the spent fuel assemblies are provided with inserted neutron absorption assemblies. According to the spent fuel pool volume expanding method, denser spent fuel storage can be achieved by inserting the inserted neutron absorption assemblies in a part of the spent fuel assemblies of the II-zone grid frame, and the spent fuel pool volume expanding method has higher critical safety and lower manufacturing cost.

Description

technical field [0001] The invention relates to the storage of spent fuel in nuclear power plants, in particular to a method for expanding the capacity of a spent fuel pool. Background technique [0002] The spent fuel pool is an intermediate storage place for the spent fuel assemblies unloaded from the nuclear island before being transported to the spent fuel reprocessing plant, and is an important part of the nuclear power plant. The spent fuel unloaded from the nuclear power plant reactor every year is about 30% to 40% of the total reactor charge. The spent fuel assembly unloaded from the core is highly radioactive and continues to release heat, so it needs to be stored in the spent fuel pool for a certain amount of time. After a period of time (usually 10 years), it can be transported to the spent fuel reprocessing plant for processing. [0003] Since there is no mature long-term storage facility for spent fuel in China, improving the on-site storage capacity of spent f...

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Application Information

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IPC IPC(8): G21C19/07
CPCG21C19/07Y02E30/30
Inventor 贺小明朱自强邵长磊黄然奚梅英刘建文
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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