CN107719888A - A kind of radioactive liquid waste transporter - Google Patents
A kind of radioactive liquid waste transporter Download PDFInfo
- Publication number
- CN107719888A CN107719888A CN201710908698.0A CN201710908698A CN107719888A CN 107719888 A CN107719888 A CN 107719888A CN 201710908698 A CN201710908698 A CN 201710908698A CN 107719888 A CN107719888 A CN 107719888A
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- Prior art keywords
- transfer container
- casing
- liquid waste
- liquid
- pipeline
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/38—Devices for discharging contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a kind of radioactive liquid waste transporter, including casing, transfer container and exhaust gas filter, transfer container and exhaust gas filter are arranged at box house;The air inlet of the exhaust gas filter is connected with the upper end of transfer container by the first pipeline;Also include air compressor, be additionally provided with the transfer container into pressure mouth, it is described to enter to press mouth with the port of export of air compressor by second pipe to be connected;The 3rd pipeline discharged for waste liquid in transfer container is additionally provided with the transfer container, input duct is additionally provided with the transfer container, block valve is provided with the input duct, the first pipeline, second pipe and the 3rd pipeline.The device can realize that waste liquid receives temporary and transhipment between liquid waste tank and liquid waste processing workshop.
Description
Technical field
The present invention relates to treating apparatus for radioactive waste liquid technical field, transports and fills more particularly to a kind of radioactive liquid waste
Put.
Background technology
All kinds of nuclear power stations, nuclear industry place can be inevitably generated a large amount of radioactive liquid wastes, and its before processing has been needed
Into waste liquid from the taking-up in storage tank and transportation work.Radioactive liquid waste generally use pipeline, its precondition are existing pipes
Line possesses and meets related request, to possess the primary condition of pipeline transportation.Because liquid waste tank is usually underground, such as without existing
There is pipeline, it is difficult to realize waste liquid to liquid waste processing shop safety, reliable transport.Therefore, develop a set of technical feasibility, safety can
Lean on, be simple and practical, economical rationality radioactive liquid waste transporter is necessary.
The content of the invention
For a set of technical feasibility of development set forth above, safe and reliable, simple and practical, economical rationality radioactive liquid waste
The problem of transporter is necessary, the invention provides a kind of radioactive liquid waste transporter, the device can liquid waste tank with
Between liquid waste processing workshop, realize that waste liquid receives temporary and transhipment.
To solve the above problems, a kind of radioactive liquid waste transporter provided by the invention is solved by following technical essential
Certainly problem:A kind of radioactive liquid waste transporter, including casing, transfer container and exhaust gas filter, transfer container and tail gas mistake
Filter is arranged at box house;
The air inlet of the exhaust gas filter is connected with the upper end of transfer container by the first pipeline;
Also include air compressor, be additionally provided with the transfer container into pressure mouth, it is described to enter to press mouth and air compressor
The port of export be connected by second pipe;
The 3rd pipeline discharged for waste liquid in transfer container is additionally provided with the transfer container, on the transfer container
Input duct is additionally provided with, block valve is provided with the input duct, the first pipeline, second pipe and the 3rd pipeline.
Specifically, above transfer container shifts radioactive liquid waste as the present apparatus in liquid waste tank and liquid waste processing workshop
Accommodating container.Above exhaust gas filter is used to remove the radioactive composition in tail gas, to cause the gas finally discharged to air
For security gas, above exhaust gas filter can use gas-liquid separator, absorption plant etc., when being gas-liquid separator, pass through by
For the materials such as droplet, colloid, particulate matter in radioactive emission by being separated in waste gas, the gas after filtering can be directly to air
To avoid causing atmosphere pollution, the droplet under filtering returns to transfer container for discharge;For absorption plant when, can pass through absorb be situated between
Matter, such as liquid absorption medium, the droplet in waste gas, colloid, particulate matter etc. are adsorbed in absorbing medium, remaining gas is arranged again
Put into air, using upper box as the protective housing of transfer container, play the work for hindering radioactive substance to spread in atmosphere
With.
In this programme, power set from transfer container to liquid waste processing workshop that exported using air compressor as are being entered
When row waste liquid discharges the present apparatus, the block valve on the first pipeline of closing, the block valve on second pipe and the 3rd pipeline, institute are opened
State air compressor to work the injecting compressed air into transfer container, now internal pressure increases in transfer container, and above internal pressure increases
It may be such that waste liquid is discharged from the 3rd pipeline into liquid waste processing workshop in transfer container, after waste liquid is expelled to a certain degree, such as
Liquid waste processing workshop is impacted to avoid compressed air from entering directly into liquid waste processing workshop, can in transfer container liquid
Face reaches the block valve closed afterwards on the 3rd pipeline and second pipe to a certain degree, opens the block valve on the first pipeline, transhipment
Gas in container is pressed by the first pipeline by exhaust gas filter with air, thinks that transfer container houses Spent Radioactive next time
Liquid is ready, and the gas now passed through by exhaust gas filter radioactive substance in exhaust gas filter is removed.Using described
It the power source that air compressor is discharged as waste liquid, not only may be such that waste liquid can efficiently discharge transfer container, while can keep away
When exempting from as discharged power source as waste liquid using pump, there is radioactive waste liquid to be stranded in pump and influence to radioactive liquid waste
Centralized management, while reduce risk of leakage.Therefore power source is discharged by setting air compressor to be used as waste liquid in this programme, can
Effectively reduce the potential safety hazard of radioactive liquid waste and the shielding cost of radioactive liquid waste.
Preferably, the 3rd pipeline is inserted in transfer container by the top of transfer container, and the arrival end of the 3rd pipeline
The bottom of transfer container is extended to, using this programme, can effectively reduce the wind that waste liquid leakage occurs for transfer container upper connecting tube position
Danger.
Further technical scheme is:
As the specific implementation form of casing, the casing includes steel frame and the screen on each side of steel frame
Layer is covered, the screen layer of steel frame sides adjacent mutually splices, and the inner space of casing is surrounded into a closed space.We
In case, the screen layer is used to shield radioactive ray, and the steel frame is the skeleton of casing, and the screen layer is steel
Wall on each side of structure-steel framing, using this programme, can not only cause casing that there is enough intensity, at the same in casing because
When directly the insufficient injection of leakage or exhaust gas filter process has radioactive substance, this casing can play radioactive substance shielding
Effect.
Box house part is operated for convenience of personnel, overhauled, side door is additionally provided with the side of the casing,
Sealing gasket is additionally provided between the main part of the side door and casing.After above sealing gasket is intended to side door closing, side door and case
The main part No leakage gap of body, is easy to the casing sealed.
Box house part is operated for convenience of personnel, overhauled, manhole is additionally provided with the top surface of the casing
Cover plate, the annexation of the main part of the cover plate for manhole and casing are to be detachably connected relation, and cover plate for manhole and casing
Main part between be additionally provided with sealing gasket.After above sealing gasket is intended to cover plate for manhole closing, the master of cover plate for manhole and casing
Body portion No leakage gap, is easy to the casing sealed.Preferably used between above cover plate for manhole and the main part of casing
Bolt connection.
For cause the air compressor in the present apparatus conveniently apply to transfer container load waste liquid, the air compressor with
Second pipe is connected by fast connecting joint., can be by by air pressure during transfer container loads waste liquid in this programme
Contracting machine is connected with waste tank by pipeline, and the outlet of waste tank is connected with feed tube, is stored up in air compressor to waste liquid
During tank blasts compressed air, realize that the waste liquid in waste tank is largely drained in transfer container, using this programme,
Also so that only having a pipeline between waste tank and transfer container, facilitate the management of radioactive liquid waste, conveyed more compared to pump
For safety, reduce disclosure risk and the shielding cost of reduction radioactive substance.During this, with waste liquid amount in transfer container
Increase, in practical operation preferably using by open the first pipeline on block valve method so that waste liquid can be more square
Entering in transfer container just.
For convenience of monitoring transfer container in internal pressure and liquid level, with facilitate instruct waste liquid to be filled into transfer container, waste liquid
By discharge, emptying of transfer container etc. in transfer container, in addition to liquid level gauge and device for pressure measurement, the liquid level gauge is used to supervise
The liquid level surveyed in transfer container, the device for pressure measurement are used to monitor the internal pressure in transfer container.
To enable present apparatus automatic operating, in addition to PLC control system, the liquid level gauge and device for pressure measurement
Signal output part be both connected on the signal input part of PLC control system, executing agency, institute are provided with the block valve
The control module for stating air compressor and executing agency is both connected in PLC control system.Preferably, for convenience to the machine of execution
Structure transmits control signal, and the control to executing agency uses Remote.
As a kind of Redundancy Design protection scheme, the bottom of the casing is additionally provided with bottom plate, and each side of bottom plate is welded
There is the water fender that the upper table relative to bottom plate is stretched out upwardly, adjacent water fender mutually splices, and water fender is formed with bottom plate holds water
Groove, the projection of the transfer container towards bottom plate fall in water tank.In this programme, the water tank can be as the waste liquid in casing
Collecting tank, do not leaked outside for waste liquid in guard box body.
For convenience of the transhipment of casing, the inside of the casing is additionally provided with hook.As described above, it is preferred to using quick connection
Joint realizes the connection of air compressor and corresponding pipeline, pretends as those skilled in the art, is connected with fast connecting joint
Pipeline preferably uses flexible pipe, and above hook can be used for hanging flexible pipe.
It is described to enter to press the top that mouth is located at transfer container to avoid waste liquid from entering second pipe.
The invention has the advantages that:
Specifically, above transfer container shifts radioactive liquid waste as the present apparatus in liquid waste tank and liquid waste processing workshop
Accommodating container.Above exhaust gas filter is used to remove the radioactive composition in tail gas, to cause the gas finally discharged to air
For security gas, above exhaust gas filter can use gas-liquid separator, absorption plant etc., when being gas-liquid separator, pass through by
For the materials such as droplet, colloid, particulate matter in radioactive emission by being separated in waste gas, the gas after filtering can be directly to air
To avoid causing atmosphere pollution, the droplet under filtering returns to transfer container for discharge;For absorption plant when, can pass through absorb be situated between
Matter, such as liquid absorption medium, the droplet in waste gas, colloid, particulate matter etc. are adsorbed in absorbing medium, remaining gas is arranged again
Put into air, using upper box as the protective housing of transfer container, play the work for hindering radioactive substance to spread in atmosphere
With.
In this programme, power set from transfer container to liquid waste processing workshop that exported using air compressor as are being entered
When row waste liquid discharges the present apparatus, the block valve on the first pipeline of closing, the block valve on second pipe and the 3rd pipeline, institute are opened
State air compressor to work the injecting compressed air into transfer container, now internal pressure increases in transfer container, and above internal pressure increases
It may be such that waste liquid is discharged from the 3rd pipeline into liquid waste processing workshop in transfer container, after waste liquid is expelled to a certain degree, such as
Liquid waste processing workshop is impacted to avoid compressed air from entering directly into liquid waste processing workshop, can in transfer container liquid
Face reaches the block valve closed afterwards on the 3rd pipeline and second pipe to a certain degree, opens the block valve on the first pipeline, transhipment
Gas in container is pressed by the first pipeline by exhaust gas filter with air, thinks that transfer container houses Spent Radioactive next time
Liquid is ready, and the gas now passed through by exhaust gas filter radioactive substance in exhaust gas filter is removed.Using described
It the power source that air compressor is discharged as waste liquid, not only may be such that waste liquid can efficiently discharge transfer container, while can keep away
When exempting from as discharged power source as waste liquid using pump, there is radioactive waste liquid to be stranded in pump and influence to radioactive liquid waste
Centralized management, while reduce risk of leakage.Therefore power source is discharged by setting air compressor to be used as waste liquid in this programme, can
Effectively reduce the potential safety hazard of radioactive liquid waste and the shielding cost of radioactive liquid waste.
Brief description of the drawings
Fig. 1 is that one specific main view with embodiment of a kind of radioactive liquid waste transporter of the present invention is had an X-rayed
Figure;
Fig. 2 is the specific top perspective for using embodiment of a kind of radioactive liquid waste transporter one of the present invention
Figure.
Scheming acceptance of the bid note is respectively:17th, water fender, 20, transfer container, 21, exhaust gas filter, 27, cover plate for manhole, 36, PLC
Control system, 38, bottom plate, 40, hook.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the present invention is not limited only to following implementation
Example:
Embodiment 1:
As depicted in figs. 1 and 2, a kind of radioactive liquid waste transporter, including casing, transfer container 20 and exhaust gas filter
21, transfer container 20 and exhaust gas filter 21 are arranged at box house;
The air inlet of the exhaust gas filter 21 is connected with the upper end of transfer container 20 by the first pipeline;
Also include air compressor, be additionally provided with the transfer container 20 into pressure mouth, it is described to enter to press mouth to compress with air
The port of export of machine is connected by second pipe;
The 3rd pipeline discharged for waste liquid in transfer container 20 is additionally provided with the transfer container 20, the transhipment is held
Input duct is additionally provided with device 20, the input duct, the first pipeline, second pipe block with being provided with the 3rd pipeline
Valve.
Specifically, above transfer container 20 shifts radioactive liquid waste as the present apparatus in liquid waste tank and liquid waste processing workshop
Accommodating container.Above exhaust gas filter 21 is used to remove the radioactive composition in tail gas, to cause what is finally discharged to air
Gas is security gas, and above exhaust gas filter 21 can use gas-liquid separator, absorption plant etc., when being gas-liquid separator,
By the way that by materials such as the droplet in radioactive emission, colloid, particulate matters, by being separated in waste gas, the gas after filtering can be direct
Discharged to air to avoid causing atmosphere pollution, the droplet under filtering returns to transfer container 20;For absorption plant when, can pass through
Absorbing medium, such as liquid absorption medium, the droplet in waste gas, colloid, particulate matter etc. are adsorbed in absorbing medium, remaining gas
Body is emitted into air again, the protective housing using upper box as transfer container 20, is played and is hindered radioactive substance in atmosphere
The effect of diffusion.
In this programme, power set from transfer container 20 to liquid waste processing workshop that exported using air compressor as,
When carrying out the waste liquid discharge present apparatus, the block valve on the first pipeline of closing, the block valve on second pipe and the 3rd pipeline is opened,
The air compressor works the injecting compressed air into transfer container 20, and now internal pressure increases in transfer container 20, in the above
Pressure, which increases, may be such that waste liquid is discharged from the 3rd pipeline into liquid waste processing workshop in transfer container 20, and certain journey is expelled in waste liquid
After degree, such as to avoid compressed air from entering directly into liquid waste processing workshop and impacted to liquid waste processing workshop, it can transport
Liquid level reaches the block valve closed afterwards on the 3rd pipeline and second pipe to a certain degree in container 20, opens cutting on the first pipeline
Break valve, and the gas in transfer container 20 is pressed by the first pipeline by exhaust gas filter 21 with air, thinks that transhipment is held next time
Device 20 houses radioactive liquid waste and is ready, now by the gas that exhaust gas filter 21 passes through in exhaust gas filter 21 radioactivity
Material is removed.The power source discharged using the air compressor as waste liquid, it not only may be such that waste liquid can be arranged efficiently
When going out transfer container 20, while can avoid as discharged power source as waste liquid using pump, there is radioactive waste liquid to be stranded in pump
In and influence centralized management to radioactive liquid waste, while reduce risk of leakage.Therefore by setting air to compress in this programme
Machine discharges power source as waste liquid, can effectively reduce the potential safety hazard of radioactive liquid waste and the shielding cost of radioactive liquid waste.
In the present embodiment, transhipment of the present apparatus in liquid waste tank with liquid waste processing workshop can be complete by crane or fork truck etc.
Into.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as depicted in figs. 1 and 2, the specific reality as casing
Existing form, the casing include steel frame and the screen layer on each side of steel frame, the screen of steel frame sides adjacent
Cover layer mutually to splice, the inner space of casing is surrounded into a closed space.In this programme, the screen layer is used to shield
Radioactive ray, the steel frame are the skeleton of casing, and the screen layer is the wall on each side of steel frame, are used
This programme, it can not only cause casing that there is enough intensity, while because of directly leakage or exhaust gas filter 21 in casing
When the insufficient injection of process has radioactive substance, this casing can play radioactive substance shielding action.
Box house part is operated for convenience of personnel, overhauled, side door is additionally provided with the side of the casing,
Sealing gasket is additionally provided between the main part of the side door and casing.After above sealing gasket is intended to side door closing, side door and case
The main part No leakage gap of body, is easy to the casing sealed.
Box house part is operated for convenience of personnel, overhauled, manhole is additionally provided with the top surface of the casing
The annexation of cover plate 27, the cover plate for manhole 27 and the main part of casing is to be detachably connected relation, and cover plate for manhole 27
Sealing gasket is additionally provided between the main part of casing.After above sealing gasket is intended to the closing of cover plate for manhole 27, cover plate for manhole 27
With the main part No leakage gap of casing, it is easy to the casing sealed.The main part of above cover plate for manhole 27 and casing
Between be preferably connected by screw bolts.
To cause the air compressor in the present apparatus conveniently applies to transfer container 20 to load waste liquid, the air compressor
It is connected with second pipe by fast connecting joint., can be by by sky during transfer container 20 loads waste liquid in this programme
Air compressor is connected with waste tank by pipeline, and the outlet of waste tank is connected with feed tube, in air compressor to useless
During liquid storage tank blasts compressed air, realize that the waste liquid in waste tank is largely drained in transfer container 20, use
This programme, also cause between waste tank and transfer container 20 only have a pipeline, facilitate radioactive liquid waste management, compared to
Pump conveying is safer, reduce disclosure risk and reduces the shielding cost of radioactive substance.During this, with transfer container
The increase of waste liquid amount in 20, preferably using the method by opening block valve on the first pipeline in practical operation so that waste liquid
Can be more convenient enter in transfer container 20.
For convenience of monitoring transfer container 20 in internal pressure and liquid level, with facilitate instruct waste liquid to be filled into transfer container 20,
Waste liquid is by discharge, emptying of transfer container 20 etc. in transfer container 20, in addition to liquid level gauge and device for pressure measurement, the liquid level
Count for monitoring the liquid level in transfer container 20, the device for pressure measurement is used to monitor the internal pressure in transfer container 20.
To enable present apparatus automatic operating, in addition to PLC control system 36, the liquid level gauge and pressure measxurement dress
The signal output part put is both connected on the signal input part of PLC control system 36, and execution machine is provided with the block valve
The control module of structure, the air compressor and executing agency is both connected in PLC control system 36.
As a kind of Redundancy Design protection scheme, the bottom of the casing is additionally provided with bottom plate 38, and each side of bottom plate 38 is equal
Be welded with the water fender 17 stretched out upwardly relative to the upper table of bottom plate 38, adjacent water fender 17 mutually splices, water fender 17 with
Bottom plate 38 forms water tank, and the projection of transfer container 20 towards the bottom plate 38 falls in water tank.In this programme, the water tank
It can not leaked outside for waste liquid in guard box body as the waste collection groove in casing.
For convenience of the transhipment of casing, the inside of the casing is additionally provided with hook 40.
Embodiment 3:
The present embodiment makees further limit on the basis of any one technical scheme that any of the above one embodiment provides
It is fixed:It is described to enter to press the top that mouth is located at transfer container 20 to avoid waste liquid from entering second pipe.
Above content is to combine the further description that specific preferred embodiment is made to the present invention, it is impossible to assert this
The embodiment of invention is confined to these explanations.For general technical staff of the technical field of the invention,
The other embodiment drawn in the case where not departing from technical scheme, should be included within the scope of the present invention.
Claims (10)
1. a kind of radioactive liquid waste transporter, it is characterised in that including casing, transfer container (20) and exhaust gas filter
(21), transfer container (20) and exhaust gas filter (21) are arranged at box house;
The air inlet of the exhaust gas filter (21) is connected with the upper end of transfer container (20) by the first pipeline;
Also include air compressor, be additionally provided with the transfer container (20) into pressure mouth, it is described to enter to press mouth and air compressor
The port of export be connected by second pipe;
The 3rd pipeline discharged for waste liquid in transfer container (20) is additionally provided with the transfer container (20), the transhipment is held
Input duct is additionally provided with device (20), is provided with and cuts on the input duct, the first pipeline, second pipe and the 3rd pipeline
Disconnected valve.
2. a kind of radioactive liquid waste transporter according to claim 1, it is characterised in that the casing includes steel construction
Frame and the screen layer on each side of steel frame, the screen layer of steel frame sides adjacent mutually splice, by casing
Portion space surrounds a closed space.
3. a kind of radioactive liquid waste transporter according to claim 1, it is characterised in that on the side of the casing also
Side door is provided with, sealing gasket is additionally provided between the main part of the side door and casing.
4. a kind of radioactive liquid waste transporter according to claim 1, it is characterised in that on the top surface of the casing also
It is provided with cover plate for manhole (27), the annexation of the cover plate for manhole (27) and the main part of casing is is detachably connected pass
System, and cover plate for manhole (27) is additionally provided with sealing gasket between the main part of casing.
5. a kind of radioactive liquid waste transporter according to claim 1, it is characterised in that the air compressor and
Two pipelines are connected by fast connecting joint.
6. a kind of radioactive liquid waste transporter according to claim 1, it is characterised in that also including liquid level gauge and pressure
Measurement apparatus, the liquid level gauge are used to monitor the liquid level in transfer container (20), and the device for pressure measurement, which is used to monitor, to be transported
Internal pressure in container (20).
7. a kind of radioactive liquid waste transporter according to claim 6, it is characterised in that also including PLC control system
(36), the signal output part of the liquid level gauge and device for pressure measurement is both connected to the signal input part of PLC control system (36)
On, it is provided with executing agency on the block valve, the control module of the air compressor and executing agency is both connected to PLC
In control system (36).
8. a kind of radioactive liquid waste transporter according to claim 1, it is characterised in that the bottom of the casing is also set
Bottom plate (38) is equipped with, each side of bottom plate (38) is welded with the water fender stretched out upwardly relative to the upper table of bottom plate (38)
(17), adjacent water fender (17) is mutually spliced, and water fender (17) forms water tank, transfer container (20) court with bottom plate (38)
The projection of bottom plate (38) falls in water tank.
9. a kind of radioactive liquid waste transporter according to claim 1, it is characterised in that the inside of the casing is also set
It is equipped with hook (40).
10. a kind of radioactive liquid waste transporter as claimed in any of claims 1 to 9, it is characterised in that described
Enter to press mouth to be located at the top of transfer container (20).
Priority Applications (1)
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CN201710908698.0A CN107719888A (en) | 2017-09-29 | 2017-09-29 | A kind of radioactive liquid waste transporter |
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CN201710908698.0A CN107719888A (en) | 2017-09-29 | 2017-09-29 | A kind of radioactive liquid waste transporter |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109229850A (en) * | 2018-08-24 | 2019-01-18 | 荣广磊 | Nanometer new material anti-leak safety protective storage device |
CN113539537A (en) * | 2021-08-16 | 2021-10-22 | 成都天保节能环保工程有限公司 | Transferring device and transferring method for radioactive organic waste liquid |
CN113936832A (en) * | 2021-09-14 | 2022-01-14 | 长江勘测规划设计研究有限责任公司 | Passive collection method for radioactive liquid of underground nuclear power station |
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