CN108682464A - Million kilowatt nuclear power factory Spent Fuel Pool expansion method - Google Patents

Million kilowatt nuclear power factory Spent Fuel Pool expansion method Download PDF

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Publication number
CN108682464A
CN108682464A CN201810493565.6A CN201810493565A CN108682464A CN 108682464 A CN108682464 A CN 108682464A CN 201810493565 A CN201810493565 A CN 201810493565A CN 108682464 A CN108682464 A CN 108682464A
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CN
China
Prior art keywords
screen work
spent fuel
fuel pool
nuclear power
old
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810493565.6A
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Chinese (zh)
Other versions
CN108682464B (en
Inventor
谭世杰
刘省勇
陈军
张士朋
张文利
林杰东
陈军琦
李俊
郭振武
孙新峰
李琪
陈秋炀
肖伟
秦强
袁亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China General Nuclear Power Corp
CGN Power Co Ltd
Nuclear Power Institute of China
Daya Bay Nuclear Power Operations and Management Co Ltd
Guangdong Nuclear Power Joint Venture Co Ltd
Suzhou Nuclear Power Research Institute Co Ltd
Shenzhen China Guangdong Nuclear Engineering Design Co Ltd
Original Assignee
China General Nuclear Power Corp
CGN Power Co Ltd
Daya Bay Nuclear Power Operations and Management Co Ltd
Guangdong Nuclear Power Joint Venture Co Ltd
Suzhou Nuclear Power Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by China General Nuclear Power Corp, CGN Power Co Ltd, Daya Bay Nuclear Power Operations and Management Co Ltd, Guangdong Nuclear Power Joint Venture Co Ltd, Suzhou Nuclear Power Research Institute Co Ltd filed Critical China General Nuclear Power Corp
Priority to CN201810493565.6A priority Critical patent/CN108682464B/en
Publication of CN108682464A publication Critical patent/CN108682464A/en
Application granted granted Critical
Publication of CN108682464B publication Critical patent/CN108682464B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G21C19/06—Magazines for holding fuel elements or control elements
    • G21C19/07—Storage racks; Storage pools
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • 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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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

The invention belongs to the technical fields of million kilowatt nuclear power station core supplement heat rejecter water, disclose a kind of million kilowatt nuclear power factory Spent Fuel Pool expansion method.The expansion method includes：Old screen work is removed：The old screen work being put into Spent Fuel Pool is hung out using the first hanging apparatus, is transported to specified regions store using transporting equipment；Highly dense screen work is carried out leveling to be adapted to the bottom of pond height of Spent Fuel Pool by highly dense screen work leveling by levelling device；Highly dense screen work installation：At the position for the old screen work highly dense screen work being positioned in Spent Fuel Pool using the second hanging apparatus；The shifting of spentnuclear fuel fills：Spentnuclear fuel is moved in highly dense screen work and is stored.The expansion method provided through the invention solves the problems, such as that Spent Fuel Pool completely holds and cannot meet spent fuel storage demand inside nuclear power station so that provides possibility for the follow-up storage spentnuclear fuel that continues.

Description

Million kilowatt nuclear power factory Spent Fuel Pool expansion method
Technical field
The invention belongs to the technical fields of million kilowatt nuclear power station core supplement heat rejecter water, are to be related to one more specifically Kind million kilowatt nuclear power factory Spent Fuel Pool expansion method.
Background technology
Spentnuclear fuel refers to by radiation exposure, used nuclear fuel, is generated by the nuclear reactor of nuclear power station.Core is anti- Include a large amount of radioactive elements in nuclear fuel after answering heap to react, therefore there are a large amount of radioactivity, if do not located properly Reason, can seriously affect the health of environment and the personnel for contacting them.Therefore via the weary combustion after the reaction of the nuclear reactor of nuclear power station Material needs to store many decades in Spent Fuel Pool, until its radioactivity is reduced to and can carry out the subsequently post-processing to spentnuclear fuel When technique.With domestic nuclear power be on the increase and the lasting operation of nuclear power station, most domestic nuclear power station is weary at present Fuel pit screen work completely holds, and it is impossible to meet the demands of spentnuclear fuel storage inside nuclear power station for existing container, therefore Spent Fuel Pool must expand Spent Fuel Pool storage capacity by transformation, ensure the normal production in nuclear power station.
When carrying out Spent Fuel Pool dilatation operation, it is necessary first to first the old screen work inside Spent Fuel Pool is removed, It needs first to transport the spentnuclear fuel inside old screen work to external storage before carrying out old screen work dismounting, but the weary combustion inside old screen work The radioactivity of material is not reduced to the emittance value that can be transported and carry out needed for the aftertreatment technology of follow-up spentnuclear fuel generally, therefore Transport and storage to spentnuclear fuel bring great difficulty.
When Spent Fuel Pool storage capacity is transformed, need to empty spentnuclear fuel, after spentnuclear fuel empties, need to old screen work into Row is removed, and the dismounting of old screen work is at home and abroad to carry out for the first time, and old screen work is soaked in tool due to being used to store spentnuclear fuel for a long time The inside in active pond can cause pond bottom of pond accordingly to corrode, to cause the uneven of bottom of pond, when old lattice When frame is replaced by new screen work after removing, since the uneven phenomenon that screen work storage can be caused unstable of bottom of pond occurs, in addition, When installing screen work, due to containing radioactive substance in pond, staff, which cannot enter inside weary pond, assists and observes peace The operation of screen work is filled, installation difficulty is very big.
Invention content
The purpose of the present invention is to provide a kind of million kilowatt nuclear power factory Spent Fuel Pool expansion methods, it is intended to solve existing There is the technical issues of Spent Fuel Pool completely holds and cannot meet spentnuclear fuel storage demand inside nuclear power station in technology.
To achieve the goals above, the technical solution adopted by the present invention is：Million kilowatt nuclear power factory Spent Fuel Pool expands Appearance method, includes the following steps：
Old screen work is removed：Spentnuclear fuel inside the old screen work is moved in temporary screen work, the first hanging apparatus is recycled The old screen work being put into Spent Fuel Pool is hung out, is transported to specified regions store using transporting equipment；
Highly dense screen work leveling：Highly dense screen work is subjected to leveling to be adapted to the bottom of pond of the Spent Fuel Pool by levelling device Highly；
Highly dense screen work installation：Highly dense screen work is positioned over using the second hanging apparatus described old in the Spent Fuel Pool At the position of screen work；
The shifting of spentnuclear fuel fills：Spentnuclear fuel is moved in the highly dense screen work and is stored.
Further, further include following steps in the old screen work removal step：
Actinometry：Radiation level measurement is carried out to the old screen work being put into Spent Fuel Pool, to ensure the old screen work Spent Fuel Pool can be hung out.
Further, further include following steps in the old screen work removal step：
The spentnuclear fuel of the old screen work surrounding need to be moved in the temporary screen work.
Further, further include temporary screen work, the temporary screen work includes being set to the first screen work, the Yi Jishe loaded in well The second screen work at the free time of the Spent Fuel Pool.
Further, further include shutter, the shutter is installed on the old screen work.
Further, the highly dense screen work is made of several storage elements for storing spentnuclear fuel.
Further, each storage unit is all made of barrier material preparation.
Further, the centre-to-centre spacing of the adjacent storage element is 280mm.
Further, the actinometry includes the following steps：
Irradiated fuel assembly taking-up in the old screen work is temporarily stored into the temporary screen work；
It is respectively separated on the old screen work and chooses several tested points, the Dose equivalent rate value of each tested point is carried out It measures, and the measured value at position to each tested point and each tested point is marked.
Further, each tested point is chosen along the length direction of the screen work unit at equal intervals successively respectively.
Further, the old screen work dismounting further includes following steps：
Vertical lifting tool is installed：Several first connections are set between the top and vertical lifting tool of the old screen work Rope；
Turning tool is installed：Returning face plate is installed in the bottom of the old screen work；
The old screen work is lifted to transporting equipment：The vertical lifting tool lifts the old screen work to transporting equipment Placement plate surface preset height, remove be located at the returning face plate right over first connecting rope make it is described old Screen work is deflected towards side；
The transport of old screen work：Old screen work after overturning is transported workshop by the transporting equipment.
Further, the old screen work dismounting further includes following steps：
Support component is installed in the bottom of old screen work, to be located at old screen work opposite two for the support component and the returning face plate End；
The transporting equipment enters workshop in a manner of moving backward.
Further, further include following steps in the highly dense screen work installation steps：
Screen work measures leveling, is measured to the irregularity degree of spentnuclear fuel bottom of pond by measuring device, and combines measurement Irregularity degree carries out leveling to the highly dense screen work；
Screen work is installed, and the highly dense screen work after leveling is hung in the Spent Fuel Pool, and to being put into the weary combustion The highly dense screen work in material pond is positioned.
Further, further include following steps in the highly dense screen work installation steps：
Position by the highly dense screen work according to nameplate label is installed in the Spent Fuel Pool.
Further, further include following steps in the highly dense screen work installation steps：
The mounting and positioning device on the highly dense screen work, convenient for being positioned to the highly dense screen work.
Further, the positioning device includes for carrying out longitudinal pre-determined bit in the spentnuclear fuel bottom of pond to the screen work Locating piece and Position Scale for being laterally pre-positioned in the spentnuclear fuel bottom of pond to the screen work.
Further, further include following steps in the highly dense screen work installation steps：
The cleannes for being put into the guider of bottom of pond are detected using camera；
Information according to the camera is fed back, if there are foreign matters on the guider, using clearing apparatus to described Guider is cleaned；
Above-mentioned cleaning is repeated, to ensure that the guider cleans.
Further, further include following steps in the highly dense screen work installation steps：
Underwater video device is positioned in Spent Fuel Pool by third traction rope, and the third traction rope is bundled In on Spent Fuel Pool guardrail.
Further, further include following steps in the highly dense screen work installation steps：
Before carrying out bottom of pond irregularity degree measurement, detection stock measuring device, the guider, underwater video dress It sets and the cleannes of camera is detected with elasticity.
Further, further include following steps in the highly dense screen work installation steps：
It is connect with the first traction rope using second hanging apparatus, the guider is sling and leaves bottom of pond and movement After the guider to bottom of pond the next position；Second hanging apparatus is set to be separated with the first traction rope, described first leads Messenger is bundled on the Spent Fuel Pool lifting guardrail.
Further, further include following steps in the highly dense screen work installation steps：
After repeating above-mentioned detecting step, after being sling the stock measuring device using Spent Fuel Pool hanging apparatus, insert Enter the measurement completed in the guider to bottom of pond the next position.
Further, further include following steps in the highly dense screen work installation steps：
After irregularity degree has measured, the stock measuring device, the guider, the camera are taken out into weary pond, And it stores.
Further, further include following steps in the highly dense screen work installation steps：
Screen work leveling is adjusted the height of landing leg of bottom adjusting apparatus according to the flatness, will be described after adjustment Bottom adjusting apparatus and the assembling of highly dense screen work, and lift in the Spent Fuel Pool.
Further, further include following steps in the highly dense screen work installation steps：
The screen work after leveling is hung in the Spent Fuel Pool；
Underwater screen work image is acquired using the underwater video device, and the image collected is transmitted to behaviour Make personnel；
According to above-mentioned image information, Underwater Navigation is carried out to the screen work by pushing meanss.
Further, further include following steps in the highly dense screen work installation：
Screen work measuring for verticality：Plug experiment is carried out to the highly dense screen work.
Further, the pushing meanss include electronic, surge or pneumatic pushing meanss.
Further, further include following steps in the highly dense screen work installation steps：
The highly dense screen work of adjacent two in Spent Fuel Pool is attached by attachment device.
Further, further include following steps in the highly dense screen work installation steps：
The pushing meanss and the locating piece are taken out from Spent Fuel Pool by the second hanging apparatus, collection waits for With.
The advantageous effect of million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention is：With existing skill Art is compared, and million kilowatt nuclear power factory Spent Fuel Pool expansion method of the invention is by the first hanging apparatus by above-mentioned spentnuclear fuel Old screen work in pond is hung out, and is transported to specified regions store using transporting equipment, by highly dense screen work leveling, that is, passes through leveling Highly dense screen work is carried out leveling to be adapted to the bottom of pond height of above-mentioned Spent Fuel Pool by device, then, is incited somebody to action by the second hanging apparatus Highly dense screen work is positioned at the position of the old screen work in Spent Fuel Pool, is finally moved in above-mentioned highly dense screen work spentnuclear fuel and is stored up It deposits.The expansion method provided through the invention solves Spent Fuel Pool and completely holds and cannot meet spentnuclear fuel inside nuclear power station and store up Deposit the problem of demand so that provide possibility for the follow-up storage spentnuclear fuel that continues.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art In the attached drawing of required practicality be briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of the present embodiment A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these Attached drawing obtains other attached drawings.
Fig. 1 is the flow chart for the Spent Fuel Pool expansion method that the embodiment of the present invention proposes；
Fig. 2 is the schematic diagram for the old screen work solid that the embodiment of the present invention proposes；
Fig. 3 is the schematic diagram of old screen work and support component that the embodiment of the present invention proposes；
Fig. 4 is the schematic diagram for the old screen work bottom structure that the embodiment of the present invention proposes；
Fig. 5 is the vertical view that the grabbing assembly that the embodiment of the present invention proposes stretches into screen work unit；
Fig. 6 is that the grabbing assembly that the embodiment of the present invention proposes stretches into the crawl schematic diagram in screen work unit；
Fig. 7 is the schematic diagram that the grasping mechanism that the embodiment of the present invention proposes firmly grasps state；
Fig. 8 is the structural schematic diagram for the guider that the embodiment of the present invention proposes；
Fig. 9 is the enlarged drawing of A in Fig. 8；
Figure 10 is the structural schematic diagram of the stock measuring device in the embodiment of the present invention；
Figure 11 is the enlarged drawing of B in Figure 10；
Figure 12 is the assembly structure diagram of the supporting rack and stock measuring device in the embodiment of the present invention；
Figure 13 is the enlarged drawing of C in Figure 12；
Figure 14 is the structural schematic diagram of the supporting rack in the embodiment of the present invention；
Figure 15 is the frame structure schematic diagram of the proposition in the embodiment of the present invention；
Figure 16 is the connection front view for adjacent two screen work that the embodiment of the present invention proposes；
Figure 17 is the schematic diagram of the connection component in the embodiment of the present invention.
Wherein, each reference numeral in figure：
The old screen works of 1-；The first bottom plates of 100-；110- screen work units；111- tested points；1000- holes for hoist；
The highly dense screen works of 2-；The second bottom plates of 21-；
3- leg assemblies；
5- stock measuring devices；51- long rods；511- connecting rods；52- lifting lugs；520- is open；53- detectors；54- gold Belong to silk；55- pivot pins；56- supports pendant；The first support rings of 561-；The second support rings of 562-；
6- guiders；61- guide rods；The first struts of 62-；The second struts of 63-；64- third struts；65- guiding mechanisms； 66- link blocks；The first traction ropes of 67-；68- blocks；650- guide parts；The positioning regions 651-；
7- supporting racks；71- support portions；710- support slots；7101- arc sections；7102- notches；72- fixed parts；721- is flat Plate；The first risers of 722-；The second risers of 723-；
8- pool walls；
9- returning face plates；91- horizontal parts；The vertical portions 92-；93- curved portions；
10- connection components, 101- connecting plates；The first positioning plates of 102-；The second positioning plates of 103-；The interim screws of 104-； The final screws of 105-；
The first hanging apparatus of 11-；1100- grabbing assemblies；The first lifting cross beams of 1101-；The first vertical loading boards of 1102-；1103- Capture mounting plate；1104- grasping mechanisms；1105- captures driving mechanism；1106- transmission mechanisms；；1107- resetting springs； 11041- grabbing claws；11042- rotational pins；11051- jacking blocks；11052- mandrils；11042- arc surfaces；The vertical push rods of 11061-； 11062- pushes push rod；
12- support components；The first support plates of 121-；The second support plates of 122-；The first links of 1211-；1221- second connects Connect frame.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another On one element or it may be simultaneously present centering elements.When an element is known as " being connected to " another element, it can be with It is directly to another element or may be simultaneously present centering elements.
Only it is phase each other in addition, it should also be noted that, the orientation term such as left and right, upper and lower in the embodiment of the present invention It is reference to concept or with the normal operating condition of product, and should not be regarded as restrictive below in conjunction with specific The realization of the present invention is described in detail in embodiment.
~Figure 17 is please referred to Fig.1, the present invention provides a kind of million kilowatt nuclear power factory Spent Fuel Pool expansion method, packets Include following steps：
Old screen work is removed：Spentnuclear fuel inside old screen work 1 is moved in temporary screen work, recycles the first hanging apparatus 11 will The old screen work 1 being put into Spent Fuel Pool is hung out, and is transported to specified regions store using transporting equipment；
Highly dense screen work installation：Highly dense screen work 2 is positioned over to the old screen work 1 in Spent Fuel Pool using the second hanging apparatus At position；
The shifting of spentnuclear fuel fills：Spentnuclear fuel is moved into storage in highly dense screen work 2.
The old screen work 1 in above-mentioned Spent Fuel Pool is hung out by the first hanging apparatus 11, using transporting equipment transport to Highly dense screen work then by highly dense screen work leveling, i.e., it is above-mentioned to be adapted to be carried out leveling by specified regions store by levelling device The bottom of pond height of Spent Fuel Pool, furthermore, the old lattice being positioned over highly dense screen work 2 by the second hanging apparatus in Spent Fuel Pool At the position of frame 1, the expansion method provided through the invention solves Spent Fuel Pool and completely holds and cannot meet inside nuclear power station The problem of spent fuel storage demand so that subsequently continuing storage spentnuclear fuel offer may.
Preferably, further include following steps in above-mentioned old screen work removal step：
Actinometry：Radiation level measurement is carried out to the old screen work 1 being put into Spent Fuel Pool, to ensure that old screen work 1 can To hang out Spent Fuel Pool.
By carrying out radiation level measurement to the old screen work 1 being put into Spent Fuel Pool, to ensure that the old screen work 1 is being hung out When Spent Fuel Pool, ensure that the radiation level of the old screen work 1 is in safety value, when the radiation level of old screen work 1 is in safety value When, so as to which old screen work 1 is hung out from Spent Fuel Pool.
Preferably, further include following steps before above-mentioned old screen work removal step：
Screen work positions：In the side wall installation positioning nameplate of Spent Fuel Pool；So that screen work is according to the positioning name plate set Storage in advance；In this way, by the installation positioning nameplate on the side wall of Spent Fuel Pool, so that screen work can be engraved according to positioning It stores in advance the position of board.
In the present invention, further include following steps in above-mentioned old screen work removal step：
The spentnuclear fuel of above-mentioned 1 surrounding of old screen work need to be moved in temporary screen work.
By the way that the spentnuclear fuel near old screen work 1 to be moved in temporary screen work (attached drawing is not made), on the one hand ensure The spentnuclear fuel near nearby is encountered when operating old screen work 1, on the other hand, ensure that and actinometry is being carried out to old screen work 1 When, it avoids neighbouring spentnuclear fuel from impacting, is detected so as to cause result inaccurate.
In the present invention, which is expressed as the screen work adjacent with old screen work 1.
Preferably, above-mentioned, temporary screen work includes being set to the first screen work loaded in well loading well and being set to spentnuclear fuel water The second screen work at the free time in pond.In this way, can be convenient for moving the spentnuclear fuel in old screen work 1 and the spentnuclear fuel around old screen work 1 It is kept in in the first screen work or the second screen work.
Preferably, shutter (attached drawing is not made) is also equipped on above-mentioned Spent Fuel Pool, which is mountable to On above-mentioned old screen work 1, in this way, when screen work carries out lifting mobile, if screen work movement lower section stores spentnuclear fuel, pass through peace in this way Shutter is filled, can avoid pounding spentnuclear fuel when screen work falls accidentally in moving process in this way, further ensure and be moved through Safety in journey.Certainly, in the present invention, above-mentioned shutter can be also mounted on highly dense screen work, or mounted on loading well On so as to block be mounted on load well in screen work, do not limit uniquely herein.
Preferably, several storage elements for storing spentnuclear fuel of above-mentioned highly dense screen work 2 are constituted, and each storage element is tool Have the rectangular fluid chamber of a side opening, and this is opening up, in this way, the spentnuclear fuel can by open storage in above-mentioned chamber, In addition, in the present invention, above-mentioned highly dense screen work 2 is 4 × 7/7 × 7/8 × 7 types, it is preferable that 4 × 7 types here are expressed as in height The horizontal direction of close screen work 2 is set as 4 storage elements, and 7 storage elements, class are set as in the longitudinal direction of highly dense screen work 2 As, 7 × 7/8 × 7 types are corresponding explanation, are not repeated herein.
Preferably, each storage unit is used is prepared using barrier material, and the centre-to-centre spacing of said memory cells is 280mm, when So, centre-to-centre spacing can also be set to other values, do not limited uniquely herein.
Preferably, in the present invention, 15 highly dense screen works by 36 storage elements are installed in above-mentioned Spent Fuel Pool 2 and 5 30 storage elements form highly dense screen work 2, certainly, in the present invention, above-mentioned so as to accommodate 690 storage elements It may also set up other multiple storage elements in Spent Fuel Pool, do not limit uniquely herein.
In the present invention, old screen work 1 is the old screen work in Spent Fuel Pool, and highly dense screen work 2 is to need to replace old screen work 1 New screen work.
Preferably, above-mentioned radiation level measurement includes the following steps：
Irradiated fuel assembly in old screen work 1 is taken out in temporary screen work；
It is respectively separated on old screen work 1 and chooses several tested points 111, the Dose equivalent rate value of each tested point 111 is carried out It measures, and the measured value at position to each tested point 111 and each tested point is marked.
In the present invention, when carrying out actinometry to old screen work 1, it is necessary first to take out irradiated fuel assembly, to ensure Influence of the irradiated fuel assembly to measurement then chooses several tested points, to realize old screen work by being respectively separated on old screen work 1 Whether 1 meet rad equivalent value, and the tested point of measurement 111 is marked, and has been surveyed with showing.And label is adopted in this step Instrument, tool, and specific mark pattern do not limit uniquely herein；By the mark for carrying out selectivity to measurement result Note may make that the higher position of radiation intensity is very clear on entire old screen work 1, be follow-up while improving labeling effciency 1 radiation protection of old screen work operation have laid a good foundation.
Preferably, multiple referring to Fig. 2, above-mentioned old screen work 1 includes several screen work units 110 for housing nuclear fuel Screen work unit 100 can arrange in length and breadth, and transversely and longitudinally through capitalization English letter and Arabic numerals carry out one by one respectively Number, in this way, each screen work unit 110 can be accurately positioned by the two combination, such as A1 screen works unit, B3 screen works Unit etc., and the opening shape of each screen work unit can be rectangle, certainly, arrangement mode, the numbering of multiple screen work units And opening shape is alternatively other, does not limit uniquely herein.
Preferably, in the multiple tested points 111 of interval selection in each screen work unit 110 respectively, and each tested point is measured Rad equivalent dosage rate values at 111, in the present embodiment, using rad equivalent dosage rate values as weighing at each tested point 111 Radiation intensity, certainly, if selecting different meter device or there is the reason of such as required precision, the spoke at each tested point 111 It penetrates intensity other indexs can also be used and weighed, therefore, measuring the rad equivalent dosage rate values at each tested point 111 herein is only The preferred embodiment of the present invention, no restriction effect；Specifically, each screen work unit 110 is the cuboid with a side opening One chamber, multiple tested points 111 in each screen work unit 110 along above-mentioned screen work unit 110 length direction successively at equal intervals It chooses.
Further, multiple tested points 111 in A1 screen work units are specially four, and first tested point 111 is located at The bottom surface of the screen work unit 110 then along its excess-three tested point 111 of the direction of length successively spaced set, and limits phase The spacing of adjacent two tested points 111 is 800mm~1200mm, herein preferably 1000mm.
Preferably, above-mentioned actinometry further includes following steps：
If the radiation level value of tested point 111 is not more than the first preset value, the first protection is executed to old screen work 1 and is grasped Make；
If the radiation level of tested point 111 is more than the first preset value and is not more than the second preset value, old screen work 1 is held The second fence operation of row；
If the radiation level of tested point 111 is more than the second preset value, third fence operation is executed to old screen work 1.
Preferably, above-mentioned first preset value is 2mSv/h (milli west not/hour), and the second preset value is 10mSv/h, and third is pre- Also other numerical value can be selected as the first preset value or the second preset value according to actual conditions, herein certainly if value is 1mSv/h It does not limit uniquely.
Preferably, above-mentioned actinometry further includes following steps：
When the measured value of above-mentioned tested point 111 is more than third preset value, then the position to above-mentioned tested point 111 and measurement are needed Value is marked, if the measured value at a certain tested point 111 is not more than third preset value, not to the position of the tested point 111 And measured value is marked.
Specifically, above-mentioned first fence operation includes the following steps：
Old screen work 1 is moved to from Spent Fuel Pool in the preparation well 15 near Spent Fuel Pool；Then, to old lattice Frame 1 carries out outer surface flushing operation waterborne.
I.e. when the measured value of all tested points 111 in old screen work 1 is no more than the first preset value, i.e., when in old screen work 1 When 111 measured value of all tested points of each screen work unit 110 is respectively less than equal to 2mSv/h, implements the first fence operation, need Illustrate, in the present embodiment, outer surface flushing operation waterborne passes through specific outer surface flusher and SED demineralized waters (i.e. demineralized water used in nuclear island desalination water distribution system) is rinsed the outer wall surface of old screen work 1, without rinsing 10 inner surface of chamber of old screen work 1 improves working efficiency while realizing the protection of 1 external radiation of old screen work.
Specifically, above-mentioned second fence operation includes the following steps：
Underwater flushing operation is carried out to the inner surface of screen work unit 110 in Spent Fuel Pool；
The rad equivalent dosage rate values of old screen work 1 are measured and marked again；
If the numerical value for measuring gained again is not more than the first preset value, old screen work 1 is moved to position from Spent Fuel Pool In preparation well near Spent Fuel Pool, outer surface flushing operation waterborne is carried out to old screen work 1 in preparing well；
If again measure gained numerical value still greater than the first preset value and be not more than the second preset value, by old screen work 1 from Spent Fuel Pool, which is moved to, to be prepared in well, is first then existed to the underwater inner surface flushing operation of the carry out of old screen work 1 in preparing well Prepare to carry out outer surface flushing operation waterborne to old screen work 1 in well.
Preferably, when the amount of radiation of the tested point 111 of old screen work 1 is more than the first preset value and is not more than the second preset value When, that is, implement the second fence operation, then old screen work 1 is moved to from Spent Fuel Pool and is prepared in well, first to old in preparing well The screen work unit 110 of screen work 1 carries out underwater inner surface flushing operation, then carries out appearance waterborne to old screen work 1 in preparing well Face flushing operation, it should be noted that in the present embodiment, underwater flushing operation passes through specific underwater flushing decontamination plant 110 inner wall of screen work unit of old screen work 1 is rinsed with SED demineralized waters, it is loose stained in screen work unit 110 to remove, To realize the radiation protection in old screen work 1 inside screen work unit 110.
Specifically, above-mentioned third fence operation includes the following steps：
Underwater flushing operation is carried out to the inner surface of screen work unit 110 in Spent Fuel Pool；
The rad equivalent dosage rate values of old screen work 1 are measured and marked again；
If the numerical value for measuring gained again is not more than second preset value, old screen work 1 is removed from Spent Fuel Pool Into the preparation well being located near Spent Fuel Pool；If numerical value be not more than the first preset value, in preparing well to old screen work 1 into Row outer surface flushing operation waterborne；
If the numerical value for measuring gained again is more than the first preset value and is not more than the second preset value, first right in preparing well Old screen work 1 carries out underwater inner surface flushing operation, then carries out outer surface flushing operation waterborne to old screen work 1 in preparing well；
If measuring the numerical value of gained again still greater than the second preset value, old screen work 1 is carried out according to emergency plan is preset Radiation protection is handled.
It should be noted that in the present embodiment, above-mentioned default emergency plan can be following several：
1, without all removing the screen work in Spent Fuel Pool when Spent Fuel Pool dilatation, thus, if 1 repetition measurement of old screen work Numerical value is still greater than the second preset value, it is contemplated that abandons removing the old screen work 1, then removes remaining screen work；
2, underwater inner surface flushing operation is carried out to screen work unit in the old screen work 1 in Spent Fuel Pool, can be also directed to Property rinse measured value still greater than the tested point 111 of the second preset value at, to reduce the radiation intensity of entire old screen work 1；
3, it in practical operation, is needed mostly in the first bottom plate 100 of 1 bottom of old screen work setting (lattice in i.e. above-mentioned old screen work 1 The bottom surface of frame unit 110), and at the first bottom plate 100 it is often the radiation intensity peak in the screen work unit 110, so, it can The first bottom plate of the old screen work 1 is removed using particular jig, and then after reducing its integral radiation intensity, is moved out spentnuclear fuel Pond.
Certainly, other emergency measures are certainly existed according to different practical operation situations, above is the excellent of the present embodiment Select scheme；By several default emergency plans more than being arranged, operating personnel may make to radiate implementations from actual screen work, It because of object suiting measures to different conditions, preferentially chooses, while improving Spent Fuel Pool dilatation efficiency, optimizes screen work radiation protection technological process.
Further, Fig. 6 and Fig. 7 are please referred to, is expanded as million kilowatt nuclear power factory provided by the invention Spent Fuel Pool A kind of specific implementation mode of appearance method, the first hanging apparatus 11 include for matching with the hole for hoist 1000 of the first bottom plate 100 The grabbing assembly 1100 of conjunction, the first lifting cross beam 1101 for installing grabbing assembly 1100 and for drive first lifting The driving device that crossbeam 1101 moves；Grabbing assembly 1100 includes being fixedly connected with the first lifting cross beam 1101 and is hollow form First vertical loading board 1102, set on crawl mounting plate 1103 of first vertical loading board 1102 far from 1101 one end of the first lifting cross beam, set In at least one grasping mechanism 1104 of crawl mounting plate 1103 and set on the inside of the first vertical loading board 1102 and for driving Grasping mechanism 1104 completes the crawl driving mechanism 1105 of grasping movement.
In the present invention, it is equipped on the first bottom plate 100 of the corresponding position in bottom of each screen work unit 110 several A hole for hoist 1000, grabbing assembly 1100 are used to capture 1 first bottom plate 100 of old screen work by the first hole for hoist 1000, and first Lifting cross beam 1101 is for installing several grabbing assemblies 1100, and driving device is with the first lifting cross beam 1101 of driving in level side To and vertical direction move.
In the present embodiment, Spent Fuel Pool dilatation 1 hanging apparatus of old screen work use process is as follows：Driving device will First lifting cross beam 1101 drives to predeterminated position so that each grabbing assembly 1100 is located at the top of some screen work unit 110 Portion, driving device drive the first lifting cross beam 1101 to move the first vertical loading board 1102 made in grabbing assembly 1100 straight down It stretches into inside screen work unit 110, the crawl driving mechanism 1105 for being set to the inside of the first vertical loading board 1102 drives grasping mechanism 1104 so that grasping mechanism 1104 is in releasing orientation (namely non-gripping state), when grasping mechanism 1104 runs through hole for hoist 1000 Afterwards, crawl driving mechanism 1105 drives grasping mechanism 1104 so that grasping mechanism 1104 is in promptly state (namely grasping mechanism 1104 live the bottom clamping of old screen work 1)；It drives the first lifting cross beam 1101 to move straight up with rear drive equipment, captures Have been friends in the past screen work 1 grabbing assembly 1100 moved upwards with the first lifting cross beam 1101 during old screen work 1 taken away into weary combustion Expect the bottom of pond in pond and rise to certain height, until leaving Spent Fuel Pool completely, and then realizes that old screen work 1 was being removed Old screen work 1 is hung out from Spent Fuel Pool in journey.
Specifically, include the following steps in the removal step of above-mentioned old screen work：
First, driving device moves in the horizontal direction, will be set on the grabbing assembly 1100 of the first lifting cross beam 1101 It lifts to the surface of old screen work 1；Then, driving device is moved in vertical direction, by the grabbing assembly in releasing orientation 1100 stretch into the screen work unit 110 of old screen work 1, and grasping mechanism 1104 is stretched into hole for hoist 1000；Furthermore crawl is driven Motivation structure 1105 drives grasping mechanism 1104 to complete grasping movement；Finally, old screen work 1 is hung out into Spent Fuel Pool to preparing well.
Further, referring to Fig. 6, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, grasping mechanism 1104 includes two grabbing claws 11041 being oppositely arranged, and each grabbing claw 11041 is equal It is rotatablely connected with crawl mounting plate 1103；Crawl driving mechanism 1105 includes the jacking block for driving grabbing claw 11041 to rotate 11051 and the mandril 11052 that is connected with jacking block 11051；Arc surface 11042, jacking block are all had on each grabbing claw 11041 11051 abut with each arc surface 11042.Specifically, be arranged the arc surface 11042 on grabbing claw 11041 the center of circle be located at grab It takes except pawl 11041, therefore arc surface 11042 is that grabbing claw 11041 is recessed；Jacking block 11051 is located at grasping mechanism 1104 Two grabbing claws 11041 between namely jacking block 11051 simultaneously with two grabbing claws 11041 on a grasping mechanism 1104 It abuts simultaneously；The crawl of grasping mechanism 1104 and release process are：Jacking block 11051 is transported to close to the direction of grasping mechanism 1104 When dynamic, jacking block 11051 moves through arc surface 11042 by two on a grasping mechanism 1104 along arc surface 11042 Grabbing claw 11041 is pushed the direction far from another grabbing claw 11041 to and is rotated respectively, is opened so that grasping mechanism 1104 is in The non-gripping state opened；When jacking block 11051 to the direction far from grasping mechanism 1104 when moving, jacking block 11051 is along circular arc Face 11042 moves, and pushes to lean on respectively by two grabbing claws 11041 on a grasping mechanism 1104 by arc surface 11042 The direction rotation of another nearly grabbing claw 11041, so that grasping mechanism 1104 is in the seized condition closed.
Further, referring to Fig. 6, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, further include for driving mandril 11052 external to be driven along what the axis of the first vertical loading board 1102 moved Motivation structure and the transmission mechanism 1106 between mandril 11052 and external drive mechanism；Transmission mechanism 1106 includes and top The vertical push rod 11061 that the one end of bar 11052 far from jacking block 11051 abuts；External drive mechanism include the first long bar body, with And the push-down head set on the end of the first long bar body and for pushing vertical push rod 11061 to move.Specifically, the first length is pushed Bar body drives push-down head movement, drives vertical push rod 11061 along the axis of the first vertical loading board 1102 in push-down head moving process Line is in 1102 internal motion of the first vertical loading board, since vertical push rod 11061 is abutted with mandril 11052, vertical push rod 11061 Drive mandril 11052 along the first vertical loading board in the first 1102 internal motion of vertical loading board along the axis of the first vertical loading board 1102 The jacking block 11051 in 11052 end of mandril is arranged with mandril in 1102 internal motion of the first vertical loading board in 1102 axis 11052 movement and move.
Further, referring to Fig. 6, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, above-mentioned transmission mechanism 1106 further include be set to vertical push rod 11061 far from 11052 one end of mandril Rotation pushes push rod 11062, and the first vertical loading board 1102 offers sliding limit slot structure, and rotation pushes push rod 11062 and passes through cunning Dynamic limit slot structure is slidably connected with the first vertical loading board 1102；Sliding limit slot structure includes level trough, is set to level trough one end And along the first vertical slots extended far from grasping mechanism direction and set on the level trough other end and along far from grasping mechanism 1104 The second vertical slots that direction extends；The length of first vertical slots be more than the second vertical slots length, push-down head offer for Rotation pushes 11062 matched rotation pushing slot of push rod, and resetting spring is equipped between mandril 11052 and the first vertical loading board 1102 1107.Specifically, it is arranged and rotates the rotation for pushing push rod 11062 and being used for and being arranged on push-down head in vertical push rod 11061 Pushing slot matches, and rotation pushing slot is set in rotation and pushes outside push rod 11062, is driven under rotation when push-down head moves linearly Pressure push rod 11062 moves in a straight line, and drives rotation to push push rod 11062 when push-down head rotates and rotates.Push-down head drives under rotation The process that pressure push rod 11062 is moved in a straight line and rotated is as follows：Push the first long bar body that push-down head movement, push-down head is driven to move It drives rotation to push push rod 11062 during dynamic to transport inside the first vertical loading board 1102 along the axis of the first vertical loading board 1102 It is dynamic, and rotate pushing push rod 11062 and moved along the first vertical slots, the straight line for driving rotation to push push rod 11062 is completed with this Movement, when rotation pushes, push rod 11062 is moved to the end of the first vertical slots and (rotation pushes push rod with level trough level 11062 moved along the first vertical slots during transfer mandril 11052 moved in the first vertical loading board 1102 it is certain away from From so that grasping mechanism 1104 is pushed into releasing orientation by jacking block 11051, this process resetting spring 1110 is compressed), rotation first Long bar body 6 drives push-down head 1109 to rotate, and rotation pushes push rod 11062 and rotates one along level trough with the rotation of push-down head Fixed angle reaches the end of the second vertical slots, at this time transports the first long bar body along the direction far from the first vertical loading board 1102 Dynamic, resetting spring 1110 pushes vertical push rod 11061 that rotation is driven to push push rod 11062 and moves to second along the second vertical slots The one end of vertical slots far from level trough, the second vertical slots are to rotation pushing push rod limit at this time so that rotation pushes push rod 11062 It can not rotate, namely the position of mandril 11052 is fixed at this time, therefore the crawl that jacking block 11051 controls is driven by mandril 11052 Mechanism 1104 also keeps the state unclamped.It is required that when grasping mechanism 1104 also keeps promptly state, along above-mentioned opposite step Suddenly：Also the rotation pushing push rod 11062 in the second vertical slots is pressed to be rotated backward again to first in level trough 11063 and is erected The end of straight trough, since the effect of resetting spring 1107 makes rotation push push rod 11062 and move to the along the first vertical slots The one end of one vertical slots far from level trough.Since the length of the first vertical slots is more than the length of the second vertical slots, when rotation When pushing push rod moves to end of first vertical slots far from level trough 11073 along the first vertical slots, jacking block 11051 will capture Mechanism 1104 is pushed in seized condition；When rotation pushes push rod 11072 along the second vertical and straight movement to separate level trough When end, grasping mechanism 1104 is pushed in releasing orientation by jacking block 11051.For example, the length of the first vertical slots is 50 millis The length of rice, the second vertical slots is 10 millimeters；End of first vertical slots far from level trough is to level trough, then reaches second vertically It moves to during the end far from level trough, mandril 11052 is along the axis of the first vertical loading board 1102 to close to grasping mechanism 1104 direction has moved 40 millimeters, namely be arranged jacking block 11051 in the end of mandril 11052 with mandril 11052 along The axis of first vertical loading board 1102 has moved 40 millimeters to close to the direction of grasping mechanism 1104.The both ends of resetting spring 1110 point It is not connected with the inner wall of mandril 11052 and the first vertical loading board 1102, realizes mandril 11052 when close to grasping mechanism 1104 with this Compression reseting spring 1110 resets bullet when mandril 11052 is not by external force or by the external force put down far from grasping mechanism 1104 Mandril 11052 is pushed up to the direction far from grasping mechanism 1104 and is moved by the elastic force that spring 1110 resets.
Further, Fig. 6 and Fig. 7 are please referred to, is expanded as million kilowatt nuclear power factory provided by the invention Spent Fuel Pool The quantity of a kind of specific implementation mode of appearance method, above-mentioned grasping mechanism 1104 is two, and crawl mounting plate 1103, which is equipped with, to be used for The mounting groove for installing grabbing claw 11041 is equipped with rotational pin 11042 between grabbing claw 11041 and the side wall of mounting groove.Specifically, The quantity of the hole for hoist 1000 of the bottom of each screen work unit 110 is 4, and the quantity of grasping mechanism 1104 is set as two, Namely four grabbing claws 11041 correspond to a hole for hoist 1000 respectively；The four direction of jacking block 11051 with arc surface 11042 It abuts namely jacking block 11051 is abutted with four grabbing claws 11041 on two grasping mechanisms 1104 simultaneously simultaneously；Grasping mechanism 1104 crawl and release process are：Jacking block 11051 close to the direction of grasping mechanism 1104 when to moving, 11051 edge of jacking block Arc surface 11042 and moving through arc surface 11042 (can realize a grasping mechanism 1104 while control two and grab herein It takes two in mechanism 1104 grabbing claws 11041 to push the direction far from another grabbing claw 11041 to respectively to rotate, so that Grasping mechanism 1104 is in the non-gripping state opened.
In addition, further including following steps in above-mentioned old screen work removal step：
Vertical lifting tool is installed：Several first connecting ropes are set between the top of old screen work 1 and vertical lifting tool；
Turning tool is installed：Returning face plate 9 is installed in the bottom of old screen work 1,
By the lifting of old screen work 1 to transporting equipment：Vertical lifting tool lifts old screen work 1 to the placement plate of transporting equipment The preset height of surface removes the first connecting rope being located at right over returning face plate 9 and old screen work 1 is deflected towards side；
In the present invention, above-mentioned returning face plate 9 includes the horizontal part 91 being connected with 1 bottom of old screen work, is put down with 1 side plate of old screen work The vertical portion 92 of row setting and the curved portion 93 between horizontal part 91 and vertical portion 92；In this way, by the way that returning face plate is arranged Consequently facilitating above-mentioned old screen work 1 is installed on transporting equipment.
Further, it is additionally provided with sleeper on above-mentioned transporting equipment, in this way, the old lattice that vertical lifting tool will deflect 1 slowly land of frame so that the vertical portion 92 of returning face plate 9 is abutted with sleeper, and vertical lifting tool drives old 1 transverse shifting of screen work to make Old screen work 1 is obtained slowly to overturn to placement plate；
Old screen work 1 after overturning is transported workshop by transporting equipment.
In addition, further including following steps in above-mentioned old screen work removal step：
Support component 12 is installed：Support component 12 is installed in the bottom of old screen work 1, support component 12 is located at returning face plate 9 The opposite both ends of old screen work 1；
Transporting equipment enters workshop in a manner of moving backward；
Specifically, the opposite side of returning face plate 9 is provided with the support component 12 with 9 same thickness of returning face plate, ensures The bottom for installing 9 old screen work 1 of returning face plate is still smooth, avoids old screen work 1 from placing unstable.It will before opening the second isolating door First isolating door is closed, and radiation is avoided to be propagated outward by the first isolating door, ensures the safety of operation.
Further, referring to Fig. 3, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, above-mentioned support component 12 includes the first support plate 121 and parallel with the first support plate 121 sets The second support plate 122 set, the length of the first support plate 121 are different from the length of the second support plate 122.Specifically, support group The first support plate 121 and the second support plate 122 that part 12 is detached by two pieces form, by the length and second of the first support plate 121 The length of support plate 122 is set as different, when some interconnecting piece of 1 bottom of old screen work can not be used due to corrosion etc. When, another replaceable interconnecting piece for connecting the first support plate 121 and the second support plate 122, ensure the first support plate 121 with It is identical that second support plate 122 stretches out the length of 1 bottom of old screen work after being connected with old screen work 1, horizontal is lifted convenient for subsequent.
Further, referring to Fig. 3, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, above-mentioned first support plate 121 is equipped with the first connecting bracket 1211, and the first support plate 121 passes through the One connecting bracket 1211 is connect with 1 bottom bolts of old screen work, the second support plate 122 be equipped with the second connecting bracket 1221, second Fagging 122 is connect by the second connecting bracket 1221 with 1 bottom bolts of old screen work.Specifically, the first connecting bracket 1211, second Connecting bracket 1221 is inverted U-shaped structure, for bolt through in order to the first support plate 121 and the second support plate 122 With the connection of 1 bottom of old screen work.
Preferably, above-mentioned highly dense screen work installation includes the following steps：
Bottom of pond cleans, and is cleaned to the bottom of pond of Spent Fuel Pool using cleaning device；
Screen work measures leveling, is measured to the irregularity degree of spentnuclear fuel bottom of pond by measuring device, and combines measurement Irregularity degree carries out leveling to the highly dense screen work 2；
Screen work is installed, and the highly dense screen work 2 after leveling is hung in the Spent Fuel Pool, and to being put into the weary combustion The highly dense screen work 2 in material pond is positioned.
In the present invention, by first cleaning the bottom of Spent Fuel Pool, the presence in Spent Fuel Pool is avoided Impurity influenced caused by follow-up measuring device；It is measured by the irregularity degree to bottom of pond, and combines the injustice measured Whole degree carries out leveling to highly dense screen work 2, is smoothly positioned in weary pond for follow-up screen work 2 and provides guarantee；Then, by by leveling Highly dense screen work 2 afterwards is hung in Spent Fuel Pool, and is positioned to the highly dense screen work 2 being put into Spent Fuel Pool；Pass through this The screen work mounting process provided is invented, so that staff is not necessarily to enter inside Spent Fuel Pool, you can complete to screen work Installation operation, so that the underwater of its screen work is mounted for possibility.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
The mounting and positioning device on above-mentioned highly dense screen work 2 is convenient for positioning of the follow-up screen work 2 in pond.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
The position that the highly dense screen work 2 is marked according to the nameplate is installed in the Spent Fuel Pool, in this way, to just It observes and operates in staff.
Specifically, above-mentioned positioning device includes for being determined what spentnuclear fuel bottom of pond was longitudinally pre-positioned highly dense screen work 2 Position block and the Position Scale for being laterally pre-positioned in spentnuclear fuel bottom of pond to screen work, by the way that locating piece and positioning is arranged Scale, to realize the laterally and longitudinally positioning to highly dense screen work 2.
In the present invention, above-mentioned located lateral can be the length direction of highly dense screen work 2, and longitudinal is highly dense screen work 2 Width direction, certainly, in the present invention, above-mentioned located lateral may be the width direction of highly dense screen work 2, and longitudinal is highly dense The length direction of screen work 2, does not limit uniquely herein.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
Guider 6 is positioned over bottom of pond specified location using the second hanging apparatus；
Stock measuring device 5 is inserted into the guider 6, the stock measuring device 5 is far from the guider 6 One end is equipped with the spirit level of the flatness for monitoring the Spent Fuel Pool bottom (attached drawing is not made).
In the present invention, the lower section of above-mentioned stock measuring device 5 is provided with scale, by the way that spirit level is set to stock The top of measuring device 5, in this way, when stock measuring device 5 is stretched into and measured to bottom of pond irregularity degree in guider 6, Spirit level can occur to change accordingly if bottom of pond injustice, and the quarter of scale in stock measuring device 5 is then read by spirit level Degree realizes the measurement to bottom of pond, and guarantee is provided for the bottom adjustment of follow-up highly dense screen work 2.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
Guider 5 is positioned over bottom of pond specified location using hanging apparatus and the first traction rope 67.In this way, can pass through Above-mentioned guider 5 is put into bottom of pond by hanging apparatus and the first traction rope 67, and in the present invention, which is spentnuclear fuel At the needs position to be measured of basin bottom.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
The specified location being positioned over above-mentioned guider 6 by the second traction rope on pond；
The underwater riding position of guider 6 is measured by laser range finder (attached drawing is not made)；
Spent Fuel Pool hanging apparatus is connect with the first traction rope, the first traction rope 67 is connect with guider 6, it should Second traction rope coordinates Spent Fuel Pool hanging apparatus and the first traction rope 67 that guider 6 is slowly positioned over bottom of pond specific bit Set place.
In this way, by the way that the second traction rope is connected with guider 6, so as to be convenient for follow-up work personnel to pass through pulling Second traction rope can slowly place guider 6 in water；By using laser range finder so as to accurate fixed under water The underwater riding position of position guider 6, is convenient for the subsequently measurement to bottom of pond unevenness；By by the first traction rope 67 be oriented to Device 6 is connected, and is then connected with the first traction rope 67 by Spent Fuel Pool hanging apparatus, in this way, by the second traction rope, hanging Guider 6 is slowly positioned in water by assembling device, the first traction rope 67 to realize.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
The cleannes for being put into the guider 5 of bottom of pond are detected using camera；
Information according to the camera is fed back, if there are foreign matters on guider 5, using burnisher to guider 5 are cleaned；
Above-mentioned cleaning is repeated, to ensure that guider 5 cleans.
By the step, to avoid guider 6 from affecting there are foreign matter the accuracy of bottom of pond irregularity degree measurement.
In the present invention, by the way that guider 6 is carried out Underwater Navigation, convenient for subsequent boots and positioning stock measuring device 5 realize measurement；By being detected to the cleannes for being positioned over underwater guider 6, whether to detect in pond to being oriented to Device 6 impacts, and avoids impacting stock measuring device 5 when detecting；Pass through stock measuring device 5, guider 6 and spirit level, to realize the measurement to bottom of pond irregularity degree, the irregularity degree provided through the invention measures and leveling, Flatness to realize bottom of pond measures, and replacing old screen work for follow-up new screen work provides guarantee.
Preferably, above-mentioned camera (attached drawing is not made) is mounted in stock measuring device 5, in this way, when stock measures When device 5 is stretched into water, to which camera can stretch into water together with stock measuring device 5, realize to being positioned in pond The detection of 6 cleannes of guider, it is simple and convenient, certainly, also camera can be placed in water, herein not by other means It is construed as limiting.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
Underwater video device is positioned in pond by third traction rope, and third traction rope is bundled in spentnuclear fuel water On the guardrail of pond.
In this way, by the way that underwater video device to be positioned in water, the case where bottom of pond, can be understood, be measured convenient for follow-up The measurement of device；The measurement situation in water can be monitored in real time, and in the present invention, above-mentioned underwater video device is installed on spentnuclear fuel water On highly dense screen work 2 in pond, it is of course also possible to be installed at other positions, do not limit uniquely herein.
Preferably, above-mentioned underwater video device is installed on the idle screen work in Spent Fuel Pool, it is of course also possible to will The underwater video device is installed at other positions, is not limited uniquely herein.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
When carrying out bottom of pond irregularity degree and measuring, detection stock measuring device 5, guider 6, underwater video device and The cleannes of camera are detected with elasticity；In this way, by being detected in advance to irregularity degree measuring device, kept away with this Test free device itself impacts measurement process；Measurement error is reduced, measurement accuracy is improved.
Further, referring to Fig. 8, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, above-mentioned guider 6 include guide rod 61, the first strut is separately installed on guide rod 61 62, the second strut 63 and third strut 64, first strut 62, the second strut 63 and third strut 64 are in be spaced apart In on above-mentioned guide rod 61, and above-mentioned first strut 62, the second strut 63 and third strut 64 are along perpendicular to above-mentioned guiding The axial direction of bar 61 is arranged, in addition, being installed respectively on above-mentioned first strut 62, the second strut 63 and third strut 64 There is guiding mechanism 65, which can be used for guiding 5 state in a vertical shape of above-mentioned stock measuring device and position above-mentioned stock Measuring device 5, to realize the subsequently measurement to bottom of pond irregularity degree.
Further, referring to Fig. 9, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, above-mentioned guiding mechanism 65 can be used for guiding and positions above-mentioned stock measuring device 5, the guiding mechanism 65 include guide part 650 and the positioning region 651 set on the guide part lower end, which is located at same with positioning region 651 On one axial direction.In this way, by the way that several guiding mechanisms 65 are arranged, thus to stock measuring device 5 in different location points to be measured Go out and is oriented to and is positioned.
Specifically, referring to Fig. 9, above-mentioned guide part is arranged in inverted cone-shaped, and confession is offered on above-mentioned guide part 650 The channel (attached drawing is not made) that above-mentioned stock measuring device 5 passes through, and offered on above-mentioned positioning region 651 above-mentioned for positioning The location hole (attached drawing is not made) of stock measuring device, above-mentioned channel are located at above-mentioned location hole on same axial direction, and should Channel is connected with the location hole.In this way, stock measuring device 5 may pass through the channel in guide part 650, and stretch into positioning region Location hole in 651 realizes the positioning to stock measuring device 5.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
Above-mentioned stock measuring device 5 is inserted into the location hole by the second hanging apparatus 12, in this way, it can be achieved that pond The measurement of bottom irregularity degree.
Further, referring to Fig. 8, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, be provided with several link blocks 66 on above-mentioned guide rod 61, which can lead with above-mentioned first Messenger 67 connects.Specifically, second passed through for above-mentioned first traction rope 67 is offered respectively on above-mentioned each link block 66 to pass through It perforates (attached drawing is not made), in this way, first traction rope 67 may pass through the second through hole and then be bundled on link block 66, realizes Connection between first traction rope 67 and link block 66.
Further, referring to Fig. 8, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, be additionally provided on above-mentioned guider 6 above-mentioned to position for supporting the idle screen work in pond Several blocks 68 of third strut 64, each block 68 are installed on above-mentioned third strut 64.In this way, by third strut 64 On the one hand upper installation block 68 can be used for realizing guider 6 under water accurate positionin, on the other hand, block 68 is supported In the achievable fixation to third strut 64 on screen work 1.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
The block 68 of above-mentioned guider 6 is resisted against on the idle screen work in Spent Fuel Pool by hanging apparatus. To play the role of fixed guide 6.
Further, referring to Fig. 10, as Spent Fuel Pool dilatation side of million kilowatt nuclear power factory provided by the invention A kind of specific implementation mode of method, above-mentioned stock measuring device 5 include being made of two or more the interconnections of connecting rod 511 Long rod 51 is realized between adjacent connecting rod 511 by connecting shaft (attached drawing is not made) and is connected, in addition, in above-mentioned long rod 51 one end is provided with lifting lug 52, which can match with Spent Fuel Pool hanging apparatus, it can be achieved that long rod 51 is hung It rises, provides condition for follow-up measurement, the other end of above-mentioned stock 51 is provided with detector 53, which can stretch into above-mentioned Detection cell bottom irregularity degree is used in guiding mechanism 6.Preferably, above-mentioned detector 53 is arranged in inverted cone-shaped, in this way, by setting It is set to this inverted cone-shaped structure, on the one hand can be adapted with above-mentioned guide part 6, on the other hand, due to detector 53 and bottom of pond Contact area is smaller, to realize finer detection.
Further, 1 is please referred to Fig.1, as Spent Fuel Pool dilatation side of million kilowatt nuclear power factory provided by the invention A kind of specific implementation mode of method offers the opening 520 for housing above-mentioned long rod 51, in the length on above-mentioned lifting lug 52 Offer through hole (attached drawing is not made) on the body of rod, and in above-mentioned lifting lug 52 in offering on the two side of above-mentioned opening 520 Pass through aperture (attached drawing is not made) is inserted through in the first through hole across the pivot pin 55 above by hole, in this way, pivot pin 55 is worn Cross the first through hole, through hole realizes the rotation connection of lifting lug 52 and long rod 51.
Further, referring to Fig. 8, as million kilowatt nuclear power factory Spent Fuel Pool expansion method provided by the invention A kind of specific implementation mode, be also equipped with for connecting rod 511 to be fixed on above-mentioned supporting rack 7 in above-mentioned connecting rod 511 Wire 54, by the way that wire 54 is arranged, when connecting rod 511 is when being connected with each other, to which wire 54 is fixed on support On frame 7, prevent connecting rod 511 from falling in pond.
Further, 2 are please referred to Fig.1, as Spent Fuel Pool dilatation side of million kilowatt nuclear power factory provided by the invention A kind of specific implementation mode of method further includes the supporting rack 7 for installing connecting rod 511 on above-mentioned supporting rack 7；Supporting rack 7 wraps Include the support portion 71 for being used to support connecting rod 511 and the fixed part 72 with 71 one of support portion；Connecting rod 511 is equipped with and branch 71 matched support pendant 56 of support part.Specifically, supporting rack 7 is used to support connecting rod 511, and then realizes supporting linkage The long rods 51 of 511 compositions measure dress convenient for stock in the million kilowatt nuclear power factory Spent Fuel Pool that is made of long rod 51 The use set；The fixed part 72 of supporting rack 7 is used to fix with the side wall at the top of external environment such as Spent Fuel Pool, support portion 71 directly contact simultaneously supporting linkage 511 with connecting rod 511.
Preferably, further include following steps in above-mentioned measurement：
Stock measuring device 5 is sling using the second hanging apparatus 12 and is positioned on supporting rack 7, in order to by adjacent company Extension bar 511 is assembled.
In the present invention, Spent Fuel Pool has certain radiativity, thus Spent Fuel Pool and workbench can be arranged compared with Far, however, the length of single stock measuring device 5 may can not meet actual demand, it is therefore desirable to stock measuring device 5 into Row assembling, to meet actual demand.
Further, 2 and Figure 13 are please referred to Fig.1, as million kilowatt nuclear power factory provided by the invention Spent Fuel Pool A kind of specific implementation mode of expansion method, above-mentioned support portion 71 offer support slot 710, and support slot 710 includes arc sections 7101 and the notch 7102 that is communicated with arc sections 7101；Support pendant 56 include the first support ring 561 and with first Second support ring 562 of 561 one of pushing out ring；The outer diameter of first support ring 561 is less than the distance at 7102 both ends of notch, the second support The outer diameter of ring 562 is more than the internal diameter of arc sections 7101.Specifically, the process for connecting rod 511 being placed in support portion 71 is：First Pushing out ring 561 passes through notch 7102 to enter the inside of arc sections 7101, is now placed in the second support of the top of the first support ring 561 Ring 562 is located at the top of arc sections 7101, since the outer diameter of the second support ring 562 is more than the internal diameter of arc sections 7101, the Two support rings 562 abut with the surface of support portion 71 and then realize that connecting rod 511 is placed in support portion 71, while the first support ring 561 outer diameter is less than the internal diameter of arc sections 7101, therefore the first support ring 561 and the long rod 51 integrated with it can opposite branch Support part 71 rotates, so as to the rotation operation of screen work stock measuring device in million kilowatt nuclear power factory Spent Fuel Pool.
Further, 4 are please referred to Fig.1, as Spent Fuel Pool dilatation side of million kilowatt nuclear power factory provided by the invention A kind of specific implementation mode of method, fixation portions 72 include the tablet 721 being connected with support portion 71, be set to tablet 721 it is same The first riser 722 and the second riser 723 of side；There is gap, the first riser 722 between first riser 722 and the second riser 723 It is arranged in parallel with the second riser 723, the first riser 722 is located at the second side of the riser 723 far from support portion 71, the first riser 722 are equipped with the screw being threadedly coupled with the first riser 722.Specifically, the top of fixed part 72 and the pool wall 8 of Spent Fuel Pool Etc. the fixed forms of use environments be：It tightens and sets for accommodating pool wall 8 in gap between first riser 722 and the second riser 723 The screw set in the first riser 722 makes the end of screw tightly be connected to pool wall 8, and then realizes the first riser 722 and second Riser 723 is stuck on pool wall 8.Certainly screw can not be also tightened, the gap between the first riser 722 and the second riser 723 is hung In on pool wall 8.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
Stock measuring device 5 after having been measured using Spent Fuel Pool hanging apparatus is pre-placed on supporting rack 7.This Sample, by the way that above-mentioned stock measuring device 5 to be placed on supporting rack 7, to temporarily store in case subsequently making stock measuring device 5 With.
Preferably, above-mentioned highly dense screen work installation further includes following steps：
It is connect with the first traction rope 67 using hanging apparatus, guider 6 is sling with a certain distance from bottom of pond and movement is led To after device 6 to bottom of pond the next position；Hanging apparatus is set to be separated with the first traction rope 67, the first traction rope 67 is bundled in above-mentioned On Spent Fuel Pool hanging apparatus guardrail.By implementing the step, the underwater movement of guider 6 is realized, to be follow-up inspection The irregularity degree for surveying spentnuclear fuel bottom of pond provides condition.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
The cleannes for being put into the guider 5 of bottom of pond are detected using camera；
Information according to camera is fed back, if there are foreign matter on guider 5, using burnisher to guider 5 into Row cleaning；
Above-mentioned cleaning is repeated, to ensure that guider 5 cleans, is measured stock using Spent Fuel Pool hanging apparatus After device 5 is sling, the measurement completed to spentnuclear fuel bottom of pond the next position is inserted into underwater guider 6.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
After irregularity degree has measured, stock measuring device 5, guider 6, camera are taken out weary pond, and stored.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
Screen work leveling is adjusted the height of landing leg of bottom adjusting apparatus according to flatness, adjusts bottom after adjustment Device and highly dense screen work 1 assemble, and lift in Spent Fuel Pool.
Preferably, include the following steps in above-mentioned screen work installation steps：
Highly dense screen work 2 after leveling is hung in Spent Fuel Pool；
Underwater screen work image is acquired using underwater video device, and the image collected is transmitted to operator Member, so that operating personnel carry out underwater just positioning to highly dense screen work 2；
According to above-mentioned image information, highly dense screen work 2 is pushed to underwater installed position by pushing meanss and is carried out finally Positioning.
In the present invention, underwater screen work image is acquired by underwater video device, and the image collected is passed Transport to operating personnel, it is the case where personnel easy to operation understand screen work in water, underwater just fixed to be carried out to highly dense screen work 2 for subsequently Position provides safeguard；When highly dense screen work 2 is from placement pond on pond, screen work is pushed by pushing meanss, and by pacifying in advance Set final positioning of the positioning rule with locating piece (attached drawing is not made) realization to highly dense screen work 2 on highly dense screen work 2.Preferably, In the present invention, above-mentioned underwater video device is placed on the highly dense screen work 2 being positioned in above-mentioned pond, certainly, underwater video Device can be also mounted at other positions, not limited uniquely herein.Preferably, above-mentioned pushing meanss are electronic, pneumatic or liquid One kind in dynamic pushing meanss, does not limit uniquely herein.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
Two adjacent highly dense screen works 2 in Spent Fuel Pool are attached by attachment device.
In the present invention, further include one in mounting process of the invention in order to further increase the stability of highly dense screen work 2 Attachment device, the attachment device can be used for above-mentioned two adjacent screen works being attached, and the stabilization of screen work bottom of pond is realized with this Property.
Specifically, 6 and Figure 17 are please referred to Fig.1, above-mentioned attachment device includes connection component 10, which includes one Connecting plate 101 is respectively arranged with the first positioning plate 102 and the second positioning plate 103, in addition, the company at the both ends of the connecting plate 101 Connection device 103 further includes interim screw 104 and final screw 105, which can be used for can by the first positioning plate 102 Dismounting is installed on a screen work bottom plate 21 in above-mentioned a pair of of screen work bottom plate 21, which can be used for determining second Position plate 103 is installed on another screen work bottom plate 21 in above-mentioned a pair of of screen work bottom plate 2, and above-mentioned final screw 105 is replaceable First positioning plate 102 and a screen work bottom plate 21 in a pair of of screen work bottom plate 21 are fixedly connected by interim screw 104, this First positioning plate 102, is mounted on screen work bottom plate 21 by sample by interim screw 104, is positioned second by final screw 105 Plate 103 is mounted on adjacent screen work bottom plate 21, and is determined above-mentioned first positioning plate 102 and above-mentioned second by connecting plate 101 Position plate 103 is separately connected, and the connection between two adjacent highly dense screen works 2 is realized with this, this way it is ensured that highly dense screen work 2 Stability improves to prevent the toppling in earthquake of highly dense screen work 2 in addition, the apparatus structure is simple, easy for installation, at low cost The safety of spent fuel storage.
Specifically, above-mentioned connection procedure is as follows：
It is located by connecting：First positioning plate 102 and first the second bottom plate of screen work are determined using interim screw 104 on the water Position connection；
It is fixedly connected：It is put into Spent Fuel Pool after 102 and first screen work bottom plate of above-mentioned first positioning plate is located by connecting In, and be in water fixedly connected the second positioning plate 103 and the second screen work bottom plate using final screw；
Final connection：Interim screw 104 is replaced using final screw 102, realizes the first positioning plate 102 and first in water Screen work bottom plate carries out final be fixedly connected.
In the present invention, in connecting two screen work bottom plates, it would be desirable to the highly dense screen work 2 being first positioned in Spent Fuel Pool Bottom plate become in the second screen work bottom plate, the bottom plate for the highly dense screen work 2 being put by after in Spent Fuel Pool is known as the first screen work bottom Plate.
In the present invention, first positioning plate 102 and old screen work bottom plate 2 are tightened using interim screw 104 first, to real Existing first positioning plate 102 is pre-positioned with first screen work bottom plate, then, is determined above-mentioned second by final screw 105 Position plate 103 is fixedly connected with posterior screen work bottom plate, when the second positioning plate 103 is fixedly connected with the first screen work bottom plate Afterwards, at this point, above-mentioned interim screw 104 is replaced with final screw 105, to realize the first positioning plate 102 and the second screen work bottom plate Realize final connection.
In the present invention, further include following steps in highly dense screen work installation steps：
Above-mentioned pushing meanss and locating piece are taken out from Spent Fuel Pool by the second hanging apparatus 12, are collected for use.
Further, further include following steps in highly dense screen work installation steps：
For the irradiated fuel assembly taking-up loaded in the idle screen work in well or Spent Fuel Pool will to be positioned over, it is positioned over In highly dense screen work 2, it is finally completed the installation to highly dense screen work 2.
Preferably, further include following steps in above-mentioned highly dense screen work installation steps：
The position that highly dense screen work 2 is marked according to nameplate is installed in above-mentioned Spent Fuel Pool.In this way, ensureing staff Observation and record.
Preferably, in the present invention, above-mentioned screen work vertical detection further includes following steps：
Measuring for verticality waterborne is carried out to the highly dense screen work 2 after leveling by plumb device.
Specifically, during Spent Fuel Pool installs highly dense screen work 2, by having surveyed and drawn in Spent Fuel Pool in advance Irregularity degree data simultaneously record, and staff carries out corresponding Levelling operation according to this data in the bottom of highly dense screen work 2, leads to Crossing levelling device makes the bottom of highly dense screen work 2 match with each point in Spent Fuel Pool, after leveling by plumbing device into Row measuring for verticality waterborne, is then slowly called in highly dense screen work in Spent Fuel Pool by hoisting fixture, so that highly dense In the rough Spent Fuel Pool that screen work 2 can be installed smoothly, and keep highly dense screen work and the perpendicular mesh of horizontal plane , underwater vertical degree detection finally is carried out by plug-in and pull-off device to mounted highly dense screen work 2, to confirm the bottom of highly dense screen work 2 It is deleveled between portion and Spent Fuel Pool, so that it is guaranteed that subsequently the fuel assembly equipped with spentnuclear fuel can be securely inserted into highly dense lattice It is stored in the installation cavity of frame 2.
Preferably, further include following steps in above-mentioned screen work vertical detection step：
Highly dense screen work 2 is repeatedly inserted by plug-in and pull-off device in the screen work unit of highly dense screen work and carries out simulation plug experiment To carry out underwater vertical degree detection.Specifically, by carrying out second of Levelling operation to highly dense screen work 2, reach highly dense screen work 2 It is deleveled between bottom and Spent Fuel Pool, and keeps highly dense screen work 2 and the perpendicular purpose of horizontal plane, filled finally by plug It sets or plumbing device carries out measuring for verticality to mounted highly dense screen work 2, confirm bottom and the Spent Fuel Pool of highly dense screen work 2 Between be deleveled, so that it is guaranteed that subsequently the fuel assembly equipped with spentnuclear fuel can be securely inserted into the installation cavity of new screen work and be deposited Storage is got up.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.

Claims (28)

1. million kilowatt nuclear power factory Spent Fuel Pool expansion method, which is characterized in that include the following steps：
Old screen work is removed：Spentnuclear fuel inside the old screen work is moved in temporary screen work, recycles the first hanging apparatus that will put The old screen work entered in Spent Fuel Pool is hung out, and is transported to specified regions store using transporting equipment；
Highly dense screen work leveling：Highly dense screen work is subjected to leveling to be adapted to the bottom of pond height of the Spent Fuel Pool by levelling device Degree；
Highly dense screen work installation：The old screen work being positioned over highly dense screen work using the second hanging apparatus in the Spent Fuel Pool Position at；
The shifting of spentnuclear fuel fills：Spentnuclear fuel is moved in the highly dense screen work and is stored.
2. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that the old lattice Further include following steps in frame removal step：
Actinometry：Radiation level measurement is carried out to the old screen work that is put into Spent Fuel Pool, to ensure that the old screen work can be with Hang out Spent Fuel Pool.
3. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 2, which is characterized in that the old lattice Further include following steps in frame removal step：
The spentnuclear fuel of the old screen work surrounding need to be moved in the temporary screen work.
4. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that described temporary Screen work includes being set to load the first screen work in well and the second screen work at the free time of the Spent Fuel Pool.
5. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that further include hiding Baffle, the shutter are installed on the old screen work.
6. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that described highly dense Screen work is made of several storage elements for storing spentnuclear fuel.
7. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 6, which is characterized in that deposited described in each Storage unit is all made of barrier material preparation.
8. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 6, which is characterized in that adjacent described The centre-to-centre spacing of storage unit is 280mm.
9. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 2, which is characterized in that the radiation Measurement includes the following steps：
Irradiated fuel assembly taking-up in the old screen work is temporarily stored into the temporary screen work；
It is respectively separated on the old screen work and chooses several tested points, the Dose equivalent rate value of each tested point is surveyed Amount, and the measured value at position to each tested point and each tested point is marked.
10. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 9, which is characterized in that each described Tested point is chosen along the length direction of the screen work unit at equal intervals successively respectively.
11. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that described old Screen work dismounting further includes following steps：
Vertical lifting tool is installed：Several first connecting ropes are set between the top and vertical lifting tool of the old screen work；
Turning tool is installed：Returning face plate is installed in the bottom of the old screen work；
The old screen work is lifted to transporting equipment：The old screen work is lifted putting to transporting equipment by the vertical lifting tool The preset height of the surface of plate is set, first connecting rope being located at right over the returning face plate is removed and makes the old screen work It is deflected towards side；
The transport of old screen work：Old screen work after overturning is transported workshop by the transporting equipment.
12. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 11, which is characterized in that described old Screen work dismounting further includes following steps：
Support component is installed in the bottom of old screen work, the support component and the returning face plate both ends that be located at old screen work opposite, The transporting equipment enters workshop in a manner of moving backward.
13. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that the height Further include following steps in close screen work installation steps：
Screen work measures leveling, is measured to the irregularity degree of spentnuclear fuel bottom of pond by measuring device, and combines the injustice measured Whole degree carries out leveling to the highly dense screen work；
Screen work is installed, and the highly dense screen work after leveling is hung in the Spent Fuel Pool, and to being put into the spentnuclear fuel water The highly dense screen work in pond is positioned.
14. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that the height Further include following steps in close screen work installation steps：
Position by the highly dense screen work according to nameplate label is installed in the Spent Fuel Pool.
15. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that the height Further include following steps in close screen work installation steps：
The mounting and positioning device on the highly dense screen work, convenient for being positioned to the highly dense screen work.
16. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 15, which is characterized in that described fixed Position device includes locating piece for being longitudinally pre-positioned in the spentnuclear fuel bottom of pond to the screen work and is used for described The Position Scale that screen work is laterally pre-positioned in the spentnuclear fuel bottom of pond.
17. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that the height Further include following steps in close screen work installation steps：
The cleannes for being put into the guider of bottom of pond are detected using camera；
Information according to the camera is fed back, if there are foreign matters on the guider, using clearing apparatus to the guiding Device is cleaned；
Above-mentioned cleaning is repeated, to ensure that the guider cleans.
18. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 17, which is characterized in that the height Further include following steps in close screen work installation steps：
Underwater video device is positioned in Spent Fuel Pool by third traction rope, and the third traction rope is bundled in weary On fuel pit guardrail.
19. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 18, which is characterized in that the height Further include following steps in close screen work installation steps：
Before carrying out bottom of pond irregularity degree measurement, detection stock measuring device, the guider, the underwater video device, And the cleannes of camera are detected with elasticity.
20. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 19, which is characterized in that the height Further include following steps in close screen work installation steps：
It is connect with the first traction rope using second hanging apparatus, the guider is sling and is left described in bottom of pond and movement After guider to bottom of pond the next position；Second hanging apparatus is set to be separated with the first traction rope, first traction rope It is bundled on the Spent Fuel Pool lifting guardrail.
21. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 20, which is characterized in that the height Further include following steps in close screen work installation steps：
After repeating the step described in the claims 17, the stock measuring device is hung using Spent Fuel Pool hanging apparatus After rising, the measurement completed to bottom of pond the next position is inserted into the guider.
22. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 21, which is characterized in that the height Further include following steps in close screen work installation steps：
After irregularity degree has measured, the stock measuring device, the guider, the camera are taken out weary pond, and deposited It puts.
23. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 22, which is characterized in that the height Further include following steps in close screen work installation steps：
Screen work leveling is adjusted the height of landing leg of bottom adjusting apparatus according to flatness, adjusts the bottom after adjustment Device and the assembling of highly dense screen work, and lift in the Spent Fuel Pool.
24. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 23, which is characterized in that the height Further include following steps in close screen work installation steps：
The screen work after leveling is hung in the Spent Fuel Pool；
Underwater screen work image is acquired using the underwater video device, and the image collected is transmitted to operator Member；
According to above-mentioned image information, Underwater Navigation is carried out to the screen work by pushing meanss.
25. million kilowatt nuclear power factory Spent Fuel Pool expansion method as described in claim 1, which is characterized in that the height Further include following steps in close screen work installation：
Screen work measuring for verticality：Plug experiment is carried out to the highly dense screen work.
26. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 24, which is characterized in that described to push away Dynamic device includes electronic, is surged or pneumatic pushing meanss.
27. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 24, which is characterized in that the height Further include following steps in close screen work installation steps：
The highly dense screen work of adjacent two in Spent Fuel Pool is attached by attachment device.
28. million kilowatt nuclear power factory Spent Fuel Pool expansion method as claimed in claim 24, which is characterized in that the height Further include following steps in close screen work installation steps：
The pushing meanss and the locating piece are taken out from Spent Fuel Pool by the second hanging apparatus, are collected for use.
CN201810493565.6A 2018-05-22 2018-05-22 Method for expanding spent fuel pool of million-kilowatt nuclear power plant Active CN108682464B (en)

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CN114147439A (en) * 2020-09-07 2022-03-08 中核核电运行管理有限公司 Underwater accurate positioning and mounting method for high-density grillwork of nuclear power station

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CN110767335A (en) * 2019-10-08 2020-02-07 中国核电工程有限公司 Method and device for coping with falling of spent fuel container and loading well/cleaning well
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CN114147439A (en) * 2020-09-07 2022-03-08 中核核电运行管理有限公司 Underwater accurate positioning and mounting method for high-density grillwork of nuclear power station

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