CN204087824U - Meet the double-deck New fuel storage system that criticality safety requires - Google Patents
Meet the double-deck New fuel storage system that criticality safety requires Download PDFInfo
- Publication number
- CN204087824U CN204087824U CN201420375800.7U CN201420375800U CN204087824U CN 204087824 U CN204087824 U CN 204087824U CN 201420375800 U CN201420375800 U CN 201420375800U CN 204087824 U CN204087824 U CN 204087824U
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- China
- Prior art keywords
- storage
- storage system
- double
- criticality safety
- new fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model relates to a kind of double-deck New fuel storage system meeting criticality safety and require, this storage system is arranged in dry storage well (1), described storage system comprises multiple storage cell (2), arrange upper and lower two novel fuel assemblies (3) in each storage cell (2), each novel fuel assembly (3) is arranged in described storage cell (2) by storage hanging basket (4).The storage system that the utility model provides, can make full use of the useful space in unit area, improves New fuel storage ability in storage well, solves the problem of factory building finite capacity; The Neutron Coupling effect of the upper and lower two-layer fuel assembly of this storage system is almost nil simultaneously, meets the criticality safety requirement of storage.
Description
Technical field
The utility model belongs to nuclear power station New fuel storage technical field, is specifically related to a kind of double-deck New fuel storage system meeting criticality safety and require.
Background technology
The storage of novel fuel assembly is the activity that an important out-pile operates easy fissioner, designs, is first stored in the dry storage region of specifying after fresh fuel is received, check herein and prepare fresh fuel for most reactor.Novel fuel assembly is without irradiation, and its reactivity is comparatively large, and therefore New fuel storage facility should ensure the integrality of fuel and subcritical safety in design.For a lot of PWR nuclear power plant, novel fuel assembly is temporary in New fuel storage region, and also will transfer wet method storage before loading reactor core to, the New fuel storage region of design is usually determined according to the size of nuclear auxiliary building, its finite capacity.Usually the criticality safety control mode adopted for the storage of novel fuel assembly has quality control, slowing down control and neutron poison control etc.The novel fuel assembly storage of current most of PWR nuclear power plant is typically designed to the Dry storage that certain storage spacing was placed, kept to individual layer.But along with China's nuclear power generating sets are progressively gone into operation, the quantity of novel fuel assembly is also when being doubled and redoubled, and existing storage capacity is difficult to the needs meeting fuel assembly storage.
Utility model content
For problems of the prior art, the utility model provides a kind of double-deck New fuel storage system meeting criticality safety and require, this storage system can make full use of the useful space in unit area, improves New fuel storage ability in storage well, solves factory building finite capacity problem; And this storage system can meet the criticality safety requirement of New fuel storage.
For reaching above object, the technical solution adopted in the utility model is: provide a kind of double-deck New fuel storage system meeting criticality safety and require, this storage system is arranged in storage well, described storage system comprises multiple storage cell, the little indoor of each storage arrange upper and lower two novel fuel assemblies, and each novel fuel assembly is arranged on the little indoor of described storage by storage hanging basket.
Further, the distance between little indoor two the described novel fuel assembly active sections of each described storage is greater than 30cm.
Further, the height of described storage cell is the height of two storage hanging baskets.
Further, dividing plate is provided with between adjacent storage cell in described storage well.
Further, the top of described storage well is provided with cover plate.
Advantageous Effects of the present utility model is:
(1) adopt storage system of the present utility model, effective storage space in unit area can be made full use of, improve the storage capability of New fuel storage well, solve the problem of factory building finite capacity.
(2) this storage system, can guarantee the safe distance that the Neutron Coupling effect of novel fuel assembly is almost nil, meets the criticality safety requirement of storage;
(3) centre distance between adjacent storage cell can not change because arranging double-deck novel fuel assembly, so the novel fuel assembly of rebuilding will make storage capability increase in unit area in storage well.
Accompanying drawing explanation
Fig. 1 is the structural representation of the double-deck New fuel storage system of the utility model;
Fig. 2 is the structural representation of individual layer New fuel storage system in prior art.
In figure:
1-storage well 2-stores cell 3-novel fuel assembly 4-and stores hanging basket
5-concrete walls 6-dividing plate 7-cover plate
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, be the double-deck New fuel storage system that can meet criticality safety requirement that the utility model provides, this double-deck New fuel storage system is applied in ACP100 rickle fresh fuel dry storage well 1, and this storage well 1 is built into by concrete walls 5.This storage system comprises multiple storage cell 2, is provided with storage sleeve pipe in each storage cell 2, is provided with upper and lower two novel fuel assemblies 3 in each storage sleeve pipe, and each novel fuel assembly 3 is placed in storage sleeve pipe by storage hanging basket 4.Like this, in limited unit area, improve the storage capability in New fuel storage pond.
In order to the requirement of satisfied storage criticality safety, between two novel fuel assembly 3 active sections, spacing is greater than 30cm.
In order to conserve space, the height of storage cell 2 is the height of two storage hanging baskets 4.
In order to prevent from dropping fuel assembly between adjacent storage cell 2, between adjacent storage cell 2, be provided with dividing plate 6.
In order to prevent falling into the foreign matters such as instrument in storage well 1, above storage well 1, be provided with cover plate 7.
By novel fuel assembly upper and lower two-layer placement in storage cell in the utility model.The process of its storage is: be first placed on by novel fuel assembly 3 in storage hanging basket 4, in the storage sleeve pipe of the storage cell 2 then storage hanging basket 4 is together placed on together with novel fuel assembly 3, arrange two storage hanging baskets 4 containing novel fuel assembly 3 in a storage sleeve pipe up and down, finally storage cell 2 is arranged in the storage well 1 around for concrete walls 5.
Store the height of cell 2 and determined by criticality safety analytical calculation for the height of the storage hanging basket 4 loading novel fuel assembly 3, the height of storage hanging basket 4 does not almost have Neutron Coupling effect by between make to place up and down two fuel assemblies, and such as between two fuel assembly active sections, spacing is greater than 30cm.Through calculating checking, when between storing hanging basket height and meeting two fuel assemblies making to place up and down without Neutron Coupling effect time, centre distance between two storage cells is when meeting criticality safety and requiring, can not arrange due to upper and lower two-layer novel fuel assembly and need to increase, namely, during the storage design of double-deck novel fuel assembly and individual layer novel fuel assembly are stored and designed, the centre distance between adjacent storage cell is identical.
As shown in Figure 2, be the side view of the New fuel storage design proposal that a kind of common individual layer is arranged, this storage system is arranged in storage well 1, and storage well 1 is built into by concrete walls 5.The storage cell 2 of storage well 1 can only deposit one group of novel fuel assembly 3, these storage cells 2 with certain pitch arrangement in novel fuel assembly storage well.
More also can find out from the structural representation of Fig. 1 and Fig. 2, the New fuel storage system of rebuilding increases making the storage capability of New fuel storage area unit area.
It should be noted that, the novel fuel assembly that ACP100 rickle adopts is the square fuel assembly of 17 × 17 arrangements.Fuel rod in assembly is contained in Zr alloy cladding pipe by low enrichment UO2 pellet and forms, and fills the helium with certain pressure in fuel rod.Fuel rod active section height is 215cm, fuel rod pitch 1.26cm, and containing 264 fuel rods and 24 guide pipes in novel fuel assembly, in current fuel management scheme, the highest initial enrichment of fuel assembly is 4.2%.Thus, the specification of the utility model storage system can the specification of based on fuel assembly design.
The double-deck New fuel storage system meeting criticality safety requirement of the present utility model is not limited to above-mentioned embodiment, those skilled in the art draw other embodiment according to the technical solution of the utility model, belong to technological innovation scope of the present utility model equally.
Claims (5)
1. the double-deck New fuel storage system meeting criticality safety and require, this storage system is arranged in storage well (1), it is characterized in that: described storage system comprises multiple storage cell (2), arrange upper and lower two novel fuel assemblies (3) in each storage cell (2), each novel fuel assembly (3) is arranged in described storage cell (2) by storage hanging basket (4).
2. meet the double-deck New fuel storage system that criticality safety requires as claimed in claim 1, it is characterized in that: between interior two described novel fuel assembly (3) active sections of each described storage cell (2), spacing is greater than 30cm.
3. meet the double-deck New fuel storage system that criticality safety requires as claimed in claim 2, it is characterized in that: the height of described storage cell (2) is the height of two storages hanging basket (4).
4. the double-deck New fuel storage system meeting criticality safety requirement as described in any one of claim 1-3, is characterized in that: be provided with dividing plate (6) between the interior adjacent storage cell (2) of described storage well (1).
5. the double-deck New fuel storage system meeting criticality safety requirement as described in any one of claim 1-3, is characterized in that: the top of described storage well (1) is provided with cover plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420375800.7U CN204087824U (en) | 2014-07-08 | 2014-07-08 | Meet the double-deck New fuel storage system that criticality safety requires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420375800.7U CN204087824U (en) | 2014-07-08 | 2014-07-08 | Meet the double-deck New fuel storage system that criticality safety requires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204087824U true CN204087824U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420375800.7U Expired - Fee Related CN204087824U (en) | 2014-07-08 | 2014-07-08 | Meet the double-deck New fuel storage system that criticality safety requires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204087824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143363A (en) * | 2014-07-08 | 2014-11-12 | 中国核电工程有限公司 | Double-layer fresh fuel storage system capable of meeting requirement on criticality safety |
| CN108657943A (en) * | 2018-05-22 | 2018-10-16 | 广东核电合营有限公司 | Spent Fuel Pool dilatation screen work hanging apparatus |
-
2014
- 2014-07-08 CN CN201420375800.7U patent/CN204087824U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143363A (en) * | 2014-07-08 | 2014-11-12 | 中国核电工程有限公司 | Double-layer fresh fuel storage system capable of meeting requirement on criticality safety |
| CN108657943A (en) * | 2018-05-22 | 2018-10-16 | 广东核电合营有限公司 | Spent Fuel Pool dilatation screen work hanging apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20210708 |