CN110576004B - Flushing device and method for radioactive waste liquid transportation system - Google Patents
Flushing device and method for radioactive waste liquid transportation system Download PDFInfo
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- CN110576004B CN110576004B CN201910677964.2A CN201910677964A CN110576004B CN 110576004 B CN110576004 B CN 110576004B CN 201910677964 A CN201910677964 A CN 201910677964A CN 110576004 B CN110576004 B CN 110576004B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/20—Disposal of liquid waste
- G21F9/22—Disposal of liquid waste by storage in a tank or other container
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Abstract
The invention relates to a flushing device and a method for a radioactive waste liquid transportation system, wherein the device comprises a vehicle-mounted processing device, and the vehicle-mounted processing device comprises a temporary storage mechanism for middle-level radioactive waste liquid, a temporary storage mechanism for low-level radioactive waste liquid and a flushing decontamination mechanism for storing flushing liquid after a flushing hose is flushed; a receiving interface configured to provide a flushing fluid to flush the hose; and a discharge interface device comprising a medium level radioactive waste liquid storage mechanism and a low level radioactive waste liquid storage mechanism. The method comprises the process of receiving the radioactive waste liquid by the vehicle-mounted treatment device and the process of discharging the radioactive waste liquid by the vehicle-mounted treatment device, the effective decontamination of the hose is realized, the safety of operators is ensured, and the amount of secondary waste liquid is reduced to the maximum extent.
Description
Technical Field
The invention relates to a flushing device and a flushing method for a radioactive waste liquid transportation system, in particular to a flushing device and a flushing method for a radioactive waste liquid transportation system.
Background
In the last decades, radioactive liquid wastes (middle and low level waste liquid, waste resin and organic waste liquid) generated in the nuclear activity process in China are basically conveyed by means of underground deep burying or aerial laying of pipelines on the ground in the nuclear industry. In recent years, some nuclear research units in China have tried to carry out on-site transportation of medium-level waste liquid and waste resin by using vehicle-mounted transportation systems on the basis of the reference of foreign experience.
Through analyzing the process principle of a vehicle-mounted transportation system for the released waste liquid in a certain research institute and combining the cold and hot debugging results of the system, the quick connector of the transportation hose needs to be washed and decontaminated before being disassembled, namely when the waste liquid is received, the waste liquid is stopped being received after the waste liquid reaches 80% of the liquid level, the transportation hose is washed, the washing operation is stopped when the liquid level reaches 90%, and if the radiation protection requirement cannot be met, the washing operation can be manually carried out again until the liquid level reaches 93%; after the waste liquid is unloaded and stored, the transfer hose needs to be washed again for decontamination, and after the washing and decontamination are finished, the washing liquid is left in the shielding container of the vehicle-mounted transportation system.
According to the specification data, the volume of the spent solution generated by the washing decontamination operation from 80% liquid level to 90% liquid level is 106L, and the volume of the spent solution generated by the washing decontamination operation from 80% liquid level to 93% liquid level is 138L. After the receiving and transferring operations of the intermediate waste liquid are finished, the transfer hose needs to be washed and decontaminated, and 276L of waste liquid is generated once receiving and transferring according to maximum estimation and occupies about 32% of the volume of the original waste liquid. And the resulting defluxed liquid waste is discharged as a middle-level effluent into a middle-level storage tank.
The deplugging liquid resulting from this type of transfer hose flushing operation is low level waste liquid, classified according to radioactivity level. From the viewpoint of radioactive waste minimization management, a method of storing a low-level radioactive waste liquid as a medium-level radioactive waste liquid does not satisfy the waste minimization requirement.
Secondly, the waste liquid that goes that the waste liquid that removes that washes the decontamination and produce to the transfer hose after will putting the waste liquid from vehicular transport system discharge will be sucked to vehicular transport system's shield can and keep in, discharges when waiting for next transportation, deposits easily scale deposit for a long time, and these waste liquids that go will crowd and occupy the receiving volume next time simultaneously.
Disclosure of Invention
In order to solve the problems, the invention provides a flushing device and a flushing method for a radioactive waste liquid transportation system, which realize effective decontamination of a hose, ensure the safety of operators and maximally reduce the amount of secondary waste liquid. The low-level waste liquid temporary storage mechanism can be used for separately collecting and storing the low-level waste liquid generated in the decontamination process in a classified manner, effectively minimizing waste, and ensuring that the transport capacity is not reduced.
The invention provides a flushing device for a radioactive waste liquid transportation system, which comprises:
the vehicle-mounted treatment device comprises a temporary storage mechanism for middle-level radioactive waste liquid, a temporary storage mechanism for low-level radioactive waste liquid and a flushing decontamination mechanism for storing flushing liquid after flushing a hose;
a receiving interface configured to provide a flushing fluid for flushing the hose; and
the discharge interface device comprises a middle radioactive waste liquid storage mechanism and a low radioactive waste liquid storage mechanism;
before transportation, the vehicle-mounted processing device receives radioactive waste liquid and stores the radioactive waste liquid in the temporary storage mechanism of the middle-level waste liquid, the receiving interface device is connected with the vehicle-mounted processing device through a hose and provides a flushing liquid flushing hose, and the flushing liquid after flushing is stored in the temporary storage mechanism of the low-level waste liquid;
after transportation, the discharge interface device is connected with the vehicle-mounted processing device through a hose, and the intermediate waste liquid storage mechanism receives the radioactive waste liquid discharged by the intermediate waste liquid temporary storage mechanism; the low-level radioactive waste liquid storage mechanism receives flushing liquid discharged by the low-level radioactive waste liquid temporary storage mechanism; and then the flushing decontamination mechanism flushes the hose and conveys the flushing liquid into the low-level waste liquid storage mechanism.
The invention is further improved in that the vehicle-mounted treatment device further comprises a vehicle-mounted niche provided with a connector, and the vehicle-mounted niche receives or discharges radioactive waste liquid through a hose; and the middle-discharge waste liquid temporary storage mechanism, the low-discharge waste liquid temporary storage mechanism and the flushing decontamination mechanism are respectively connected with the vehicle-mounted niche.
The temporary storage mechanism for the low-level waste liquid comprises a vehicle-mounted waste liquid collecting container, wherein the vehicle-mounted waste liquid collecting container is connected with the vehicle-mounted niche through a pipeline; and the vehicle-mounted waste liquid collecting container is connected with a vehicle-mounted vacuum pump and an air compressor.
The invention is further improved in that the vehicle-mounted waste liquid collecting container is provided with a first pressure gauge and a first liquid level gauge.
The vehicle-mounted waste liquid collecting container is further improved in that a first pressure control pipeline connected with an air compressor and a first vacuum exhaust pipeline connected with a vacuum pump are arranged on the vehicle-mounted waste liquid collecting container.
In a further development of the invention, the flushing and decontamination means comprises a vehicle-mounted flushing agent container which is connected to the vehicle-mounted niche via a flushing agent discharge line and to which an air compressor is connected.
The vehicle-mounted flushing agent container is further improved in that a second pressure gauge and a second liquid level gauge are arranged on the vehicle-mounted flushing agent container, and a first exhaust pipe capable of being communicated with external air and a second pressure control pipeline connected with an air compressor are arranged on the vehicle-mounted flushing agent container.
The invention further improves that the receiving interface device comprises a middle waste liquid storage container and a fixed flushing agent container; the middle waste liquid storage container and the fixed flushing agent container are respectively connected with a fixed working box;
the fixed working box can be connected with a hose so as to be connected with the vehicle-mounted processing device, and when the vehicle-mounted processing device receives radioactive waste liquid, the temporary storage mechanism of the intermediate waste liquid is communicated with the intermediate waste liquid storage container and receives the radioactive waste liquid; after receiving, the low waste liquid temporary storage mechanism is communicated with the fixed flushing agent container and receives flushing liquid for flushing the hose.
The invention has the further improvement that the intermediate waste liquid storage container is connected with an air purification system through a second exhaling pipeline; the fixed flushing agent container is provided with a liquid level meter, an overflow pipeline connected with the floor drain system and a second detergent loading pipeline connected with the water pipe.
The invention is further improved in that a second vacuum exhaust pipeline connected with the waste gas treatment device is arranged on the middle-level waste liquid storage mechanism, and a third vacuum exhaust pipeline connected with the waste gas treatment device is arranged on the low-level waste liquid storage mechanism.
According to another aspect of the present invention, there is also provided a decontamination method using the above-described washing apparatus for a radioactive liquid waste transport system, comprising:
during the process of receiving the radioactive waste liquid by the vehicle-mounted treatment device,
step A1, communicating the vehicle-mounted processing device with the receiving interface device;
step A2, the temporary storage mechanism for the radioactive waste liquid receives the radioactive waste liquid from the receiving interface device;
step A3, after the receiving is finished, the receiving interface device provides a flushing liquid flushing hose and receives the flushing liquid through a low waste liquid temporary storage mechanism;
in the process of discharging the radioactive waste liquid by the vehicle-mounted treatment device,
step B1, communicating the vehicle-mounted processing device and the discharge interface device,
step B2, discharging the radioactive waste liquid in the temporary storage mechanism for the middle radioactive waste liquid into a storage mechanism for the middle radioactive waste liquid, and discharging the flushing liquid in the temporary storage mechanism for the low radioactive waste liquid into a storage mechanism for the low radioactive waste liquid;
and step B3, after the discharge is finished, flushing the hose through the flushing decontamination mechanism, and conveying the flushing liquid into the low-level waste liquid storage mechanism.
The invention further improves the method that after the step A3 is completed, the radioactive dosage level on the surface of the hose is measured by using a long rod type dosage rate meter, and if the radioactive dosage level does not meet the radiation protection requirement directly operated by a person, the step A3 is repeated until the requirement is met.
The invention has the further improvement that in the process that flushing liquid in the low-level waste liquid temporary storage mechanism is discharged to the low-level waste liquid storage mechanism, the pressure is increased in the vehicle-mounted waste liquid collection container, and the low-level waste liquid is pushed into the low-level waste liquid storage mechanism through the pressure; or the low-level waste liquid in the vehicle-mounted waste liquid collecting container is sucked into the low-level waste liquid storage mechanism by pumping negative pressure in the low-level waste liquid storage mechanism.
The invention has the further improvement that in the process that the flushing decontamination mechanism conveys the flushing liquid to the low-level waste liquid storage mechanism, the pressure is increased through the vehicle-mounted flushing agent container, and the flushing liquid is pushed into the low-level waste liquid storage mechanism through the hose by the pressure; or the flushing liquid in the vehicle-mounted flushing agent container is sucked into the low-level waste liquid storage mechanism through the hose by pumping negative pressure in the low-level waste liquid storage mechanism.
Compared with the prior art, the invention has the advantages that:
the flushing device and method for the radioactive waste liquid transportation system realize effective decontamination of the hose, ensure the safety of operators and maximally reduce the amount of secondary waste liquid. The vehicular waste liquid collecting container in the low waste liquid temporary storage mechanism can collect and store the low waste liquid generated in the decontamination process independently in a classified manner, effectively minimizes waste, and ensures that the transport capacity is not reduced.
According to the invention, the flushing decontamination mechanism can flush the hose after being discharged, so that effective decontamination of the hose is further realized, and the safety of personnel is ensured. When discharging, the vacuum suction and air compression modes are adopted to wash and decontaminate the hose, the hose is selected according to different conditions, and the application range is wide
Drawings
Fig. 1 is a schematic structural view of a flushing device for a radioactive waste transport system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vehicle-mounted processing apparatus according to an embodiment of the invention;
FIG. 3 is a schematic diagram of the structure of a receive interface device according to one embodiment of the present invention;
fig. 4 is a schematic diagram of the structure of a drain interface according to one embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
The meaning of the reference symbols in the drawings is as follows: 1. a vehicle-mounted processing device, 2, a receiving interface device, 3, a discharging interface device, 11, a low-level waste liquid temporary storage mechanism, 12, a flushing decontamination mechanism, 13, a medium-level waste liquid temporary storage mechanism, 14, a vehicle-mounted niche, 110, a vehicle-mounted waste liquid collecting container, 111, a decontamination liquid discharging pipeline, 112, a decontamination liquid discharging pipeline, 113, a low-level connecting pipeline, 114, a first pressure gauge, 115, a first liquid level gauge, 116, a first pressure control pipeline, 117, a first vacuum exhaust pipeline, 120, a vehicle-mounted irrigant container, 121, an irrigant discharging pipeline, 122, a second pressure control pipeline, 123, a first exhaust pipeline, 124, a first irrigant loading pipeline, 125, a second pressure gauge, 126, a second liquid level gauge, a waste liquid storing container in 201, 202, a fixed irrigant container, 203, a fixed working tank, 204, a second exhaust pipeline, 205, a third exhaust pipeline, 206. the device comprises a middle-level waste liquid pipeline 207, an overflow pipeline 208, a second detergent loading pipeline 209, a second flushing agent discharge pipeline 210, a third liquid level meter 301, a middle-level waste liquid storage mechanism 302, a low-level waste liquid storage mechanism 303, a middle-level waste liquid receiving pipeline 304, a low-level waste liquid receiving pipeline 305, a second vacuum exhaust pipeline 306 and a third vacuum exhaust pipeline.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 schematically shows a flushing device for a radioactive waste transport system according to one embodiment of the present invention. According to the flushing device for the radioactive waste liquid transportation system, the effective decontamination of the hose is realized, the safety of operators is ensured, and the amount of secondary waste liquid is reduced to the maximum extent. The vehicle-mounted waste liquid collecting container can be used for separately collecting and storing low-level waste liquid generated in the decontamination process in a classified manner, so that waste minimization is effectively realized, and the transportation capacity is guaranteed not to be reduced.
As shown in fig. 1, the flushing device for a radioactive waste transport system of the present embodiment includes a vehicle-mounted processing device 1, where the vehicle-mounted processing device 1 is disposed on a radioactive waste transport vehicle, and temporarily stores radioactive waste during transport. The vehicle-mounted processing device 1 comprises a temporary storage mechanism 13 for the middle discharge waste liquid, a temporary storage mechanism 11 for the low discharge waste liquid and a flushing decontamination mechanism 12. The temporary storage mechanism 13 is used for storing radioactive waste liquid in the transportation process, and mainly stores the radioactive waste liquid; the low-level waste liquid temporary storage mechanism 11 is used for storing flushing liquid after cleaning the hose, and the flushing liquid after cleaning the hose is used as low-level waste liquid; the flushing decontamination mechanism 12 is used to store flushing fluid which flushes the hose after discharging the middle and low level waste streams.
The flushing device for the radioactive waste liquid transportation system described in this embodiment further includes a receiving interface device 2, and the receiving interface device 2 is used for providing the radioactive waste liquid and the flushing liquid for flushing the hose to the vehicle-mounted processing device 1. Before the radioactive waste liquid transport vehicle is transported, the vehicle-mounted processing device 1 is connected with the receiving interface device 2 through a hose. The vehicle-mounted processing device 1 receives the radioactive waste liquid of the receiving interface device 2 and stores the radioactive waste liquid in the temporary storage mechanism 13 for the middle-placed waste liquid. After the receiving is completed, the receiving interface device 2 provides flushing liquid, and the flushing liquid after the hose is flushed is conveyed into the low-level waste liquid temporary storage mechanism 11.
The flushing device for the radioactive waste liquid transportation system further comprises a discharge interface device 3, and the discharge interface device 3 is used for receiving the middle-level waste liquid and the low-level waste liquid discharged by the vehicle-mounted treatment device 1. In the present embodiment, the discharge interface 3 includes a middle-level effluent storage mechanism 301 and a low-level effluent storage mechanism 302.
When the flushing device for the radioactive liquid waste transportation system is used, before transportation, the vehicle-mounted processing device 1 receives the radioactive liquid waste and stores the radioactive liquid waste in the temporary storage mechanism 13, the receiving interface device 2 is connected with the vehicle-mounted processing device 1 through a hose and provides flushing liquid to flush the hose, and the flushing liquid after flushing is stored in the temporary storage mechanism 11. After transportation, the discharge interface device 3 is connected with the vehicle-mounted processing device 1 through a hose, and the intermediate waste liquid storage mechanism 301 receives the radioactive waste liquid discharged by the intermediate waste liquid temporary storage mechanism 13; the low level radioactive waste liquid storage mechanism 302 receives the flushing liquid discharged by the low level radioactive waste liquid temporary storage mechanism 11; the flushing decontamination mechanism 12 then flushes the hose and delivers the flushing fluid to the low level waste storage mechanism 302.
In one embodiment, the vehicle mounted processing device 1 further comprises a vehicle mounted niche 14 provided with a joint, as shown in fig. 2. The vehicle-mounted niche 14 receives or discharges radioactive waste liquid through a hose; and the intermediate waste liquid temporary storage mechanism 13, the low waste liquid temporary storage mechanism 11 and the flushing decontamination mechanism 12 are respectively connected with the vehicle-mounted niche 14. The vehicle-mounted disposal device 1 is connected to the receiving interface 2 for receiving the radioactive liquid waste or to the discharging interface 3 for discharging the radioactive liquid waste through the vehicle-mounted niche 14 and the hose.
In a preferred embodiment, the low level waste buffer mechanism 11 comprises a vehicle mounted waste collection container 110 for collecting the flushing liquid flushed through the hose as low level radioactive waste. The vehicle-mounted waste liquid collection container 110 is connected to the vehicle-mounted niche 14 by a pipe. Further, the vehicle-mounted waste liquid collecting container 110 is connected to a vehicle-mounted vacuum pump and an air compressor.
Preferably, the piping connecting the vehicle-mounted waste liquid collecting container 110 to the vehicle-mounted niche 14 includes a decontamination liquid inlet piping 111, a decontamination liquid outlet piping 112, and a low level connection piping 113. Wherein, the pipeline 111 is arranged into to the decontamination solution connects low connecting tube 113 and vehicular waste liquid collecting container 110, and the pipeline 112 is arranged into to the decontamination solution connects low connecting tube 113 and vehicular waste liquid collecting container 110, and decontamination solution discharge pipe 112 and decontamination solution discharge pipe 111 are parallelly connected. Valves are arranged on the decontamination solution inlet pipeline 111, the decontamination solution outlet pipeline 112 and the low-level connecting pipeline 113. During reception, the decontamination liquid inlet pipe 111 is opened, the decontamination liquid outlet pipe 112 is closed, and the decontamination liquid output from the reception interface device 2 flows through the hose, the low-level connection pipe 113 and the decontamination liquid inlet pipe 111 into the vehicle-mounted waste liquid collection container 110. When discharging, the decontamination solution inlet pipe 111 is closed, the decontamination solution outlet pipe 112 is opened, and the low-level waste liquid passes through the decontamination solution outlet pipe 112 and the low-level connecting pipe 113 and then enters the discharge interface device 3. The bottom end of the decontamination solution discharge pipeline 111 is arranged at the upper part of the vehicle-mounted waste liquid collection container 110, and the bottom end of the decontamination solution discharge pipeline 112 is arranged at the bottom of the vehicle-mounted waste liquid collection container 110.
In a preferred embodiment, the vehicle mounted waste collection container 110 is provided with a first pressure gauge 114 and a first level gauge 115. A first pressure gauge 114 is used to measure the pressure within the vehicle-mounted waste collection container 110 and a first level gauge 115 measures the level of liquid within the vehicle-mounted waste collection container 110. By providing the first pressure gauge 114 and the second level gauge 126, a reference is provided for operation.
In this embodiment, the vehicle-mounted waste liquid collecting container 110 is provided with a first pressure-controlled pipeline 116, and the first pressure-controlled pipeline 116 is connected to an air compressor. The vehicle-mounted waste liquid collecting container 110 is provided with a first vacuum exhaust pipeline 117 for connecting a vehicle-mounted vacuum pump. Valves are arranged on the first pressure control pipeline 116 and the first vacuum exhaust pipeline 117.
When the flushing device for the radioactive waste liquid transportation system according to the present embodiment is used, the valve of the first vacuum exhaust pipeline 117 is opened to communicate with the vacuum pump for vacuum pumping when receiving low level radioactive waste liquid. The vehicle-mounted waste liquid collection container 110 forms a negative pressure relative to the receiving interface device 2, which is beneficial for the flushing liquid to enter the vehicle-mounted waste liquid collection container 110. When the low-level waste liquid is discharged, the valve of the first pressure-controlled pipeline 116 may be opened, and pressure is applied to the interior of the vehicle-mounted waste liquid collection container 110 by the air compressor, so that the low-level waste liquid is discharged under the action of the pressure.
In one embodiment, the rinse and decontamination mechanism 12 includes an onboard rinse container 120, the onboard rinse container 120 being connected to the onboard niche 14 by a rinse discharge conduit 121. The vehicle-mounted flushing agent container 120 is provided with a second pressure-controlled pipeline 122, and an air compressor is connected with the second pressure-controlled pipeline 122. Preferably, a first exhaust pipe 123 connected to the atmosphere is provided on the vehicle-mounted rinse container 120 for pressure relief. A first flushing agent loading conduit 124 is also provided in the vehicle-mounted flushing agent container 120, i.e. an inlet to the vehicle-mounted flushing agent container 120 for connection to an external flushing agent container. When there is less rinse in the in-vehicle rinse container 120, the rinse is replenished through the first rinse loading line 124. In this embodiment, valves are provided on the flushing agent discharge line 121, the first exhale line 123, the second pressure controlled line 122 and the first flushing agent charge line 124. In a preferred embodiment, a second pressure gauge 125 and a second level gauge 126 are provided on the vehicle mounted rinse container 120.
In using the flushing device for a radioactive liquid waste transport system according to the present embodiment, after discharging the middle-level and low-level waste liquids, the hose is flushed by the flushing decontamination mechanism 12. The flushing agent discharge pipe 121 is opened, the second pressure control pipe 122 is opened to communicate with an air compressor, flushing liquid can be discharged through the flushing agent discharge pipe 121 by the pressing of the air compressor, the flushing liquid passes through the hose, the hose is flushed, and finally the flushing liquid enters the discharge interface device 3.
In one embodiment, as shown in fig. 3, the receiving interface 2 includes a radioactive waste liquid storage container 201, and a fixed type flushing agent container 202. The middle waste liquid storage container 201 and the fixed flushing agent container 202 are respectively connected with a fixed working box 203. The stationary work box 203 can be connected to a hose for connecting the vehicle-mounted processing device 1, so that the stationary work box 203 and the vehicle-mounted niche 14 are connected to both ends of the hose during reception, respectively. When the vehicle-mounted processing device 1 receives the radioactive waste liquid, the intermediate waste liquid temporary storage mechanism 13 is communicated with the intermediate waste liquid storage container 201 and receives the radioactive waste liquid. After the receiving is completed, the low-level waste liquid temporary storage mechanism 11 is communicated with the fixed flushing agent container 202 and receives the flushing liquid of the flushing hose.
In a preferred embodiment, the radioactive waste storage container 201 is connected to an air purification system via a second respiratory conduit 204 and to the stationary work box 203 via a radioactive waste conduit 206. The fixed flushing agent container is connected to the fixed working tank 203 through a second flushing agent discharge pipe 209, and a second detergent loading pipe 208 connected to a water pipe and a third exhaust pipe 205 connected to the atmosphere are provided on the fixed flushing agent container. The fixed flushing agent container is also connected with a floor drain system through an overflow pipeline 207, and a liquid level meter is also arranged on the fixed flushing agent container.
In one embodiment, as shown in fig. 4, an exhaust gas treatment device is connected to both the middle-level effluent storage mechanism 301 and the low-level effluent storage mechanism 302 of the discharge interface device 3. Preferably, the middle level effluent storage mechanism 301 is connected to a connector via a middle level effluent receiving pipe 303, the low level effluent storage mechanism 302 is connected to a connector via a low level effluent receiving pipe 304, or is connected to an indirect connector via a middle level effluent receiving pipe 303, and the connector can be connected to a hose. In a preferred embodiment, the middle emission waste storage mechanism 301 is connected to the exhaust gas treatment device through a second vacuum exhaust pipe 305, and the low emission waste storage mechanism 302 is connected to the exhaust gas treatment device through a third vacuum exhaust pipe 306.
According to another aspect of the invention, a method of decontamination is also presented. The method comprises two parts: a process of receiving the radioactive liquid waste by the vehicle-mounted processing apparatus 1 and a process of discharging the radioactive liquid waste by the vehicle-mounted processing apparatus 1.
The process of receiving the radioactive liquid waste by the vehicle-mounted processing device 1 includes the following steps.
And A1, communicating the vehicle-mounted processing device 1 with the receiving interface device 2.
Step a2, the intermediate waste liquid temporary storage mechanism 13 receives the radioactive waste liquid of the receiving interface device 2.
Step a3, after the receiving is completed, the receiving interface device 2 provides a flushing liquid flushing hose, and receives the flushing liquid through the low level waste liquid temporary storage mechanism 11.
The process of discharging radioactive liquid waste by the vehicle-mounted processing apparatus 1 includes the following steps.
And step B1, communicating the vehicle-mounted processing device 1 with the discharge interface device 3.
And step B2, discharging the radioactive waste liquid in the temporary storage mechanism 13 to the storage mechanism 301 of radioactive waste liquid, and discharging the flushing liquid in the temporary storage mechanism 11 of low level waste liquid to the storage mechanism 302 of low level waste liquid.
And step B3, after the discharge is finished, flushing the hose through the flushing decontamination mechanism 12, and conveying the flushing liquid into the low-level waste liquid storage mechanism 302.
By the method according to the embodiment, the hose can be flushed both during receiving and discharging, and the flushed flushing liquid becomes low-level waste liquid due to contamination of radioactive waste liquid in the hose. The low level radioactive waste liquid and the medium level radioactive waste liquid are stored separately, and the low level radioactive waste liquid is stored in the low level radioactive waste liquid storage mechanism 302, so that the requirement of minimizing waste is met. And does not occupy the space of the vehicle-mounted shielding tube.
In a preferred embodiment, the onboard disposal device 1 receives the radioactive liquid waste in the following manner:
step A1, the vehicle-mounted niche 14 and the fixed work box 203 are respectively butted at two ends of the hose, and the quick butt valves at the two ends of the hose are checked to be in an open state.
Step a2, opening a valve of the middle waste liquid pipeline 206 of the middle waste liquid storage container 201, and communicating the middle waste liquid temporary storage mechanism 13 with the vehicle-mounted niche 14, wherein the middle waste liquid temporary storage mechanism 13 receives the radioactive waste liquid of the receiving interface device 2.
Step A3, manually open the valve on the second detergent loading pipe 208, observe that the second level gauge 126 on the upper part of the container indicates a small refill of the fixed detergent container, the first refill being about half of the total height. Meanwhile, the first vacuum exhaling and exhausting pipeline 117 of the vehicle-mounted processing device 1 is opened, valves on other pipelines are closed, negative pressure is pumped out of the pump vehicle-mounted waste liquid collecting container 110 through vehicle-mounted vacuum, and when the negative pressure in the vehicle-mounted waste liquid collecting container 110 reaches a set value, the negative pressure pumping operation is stopped.
And (3) opening a valve on the second flushing agent discharge pipeline 209, a valve on the decontamination solution discharge pipeline 111 and a valve on the low-level connecting pipeline 113, and enabling the flushing solution to enter the vehicle-mounted decontamination solution collection container through the fixed working tank 203, the hose, the valve in the vehicle-mounted niche 14, the valve on the low-level connecting pipeline 113 and the decontamination solution discharge pipeline 111. After the fixed type flushing agent container is emptied, air enters the vehicle-mounted waste liquid removing and collecting container along the route, the pressure in the vehicle-mounted waste liquid removing and collecting container is rapidly increased, and when the pressure is increased to a set value, the valve is closed, and the first flushing is completed.
And (4) measuring the surface dose level of the hose by using a long-rod type dose rate meter, and if the surface dose level does not meet the radiation protection requirement of direct operation of personnel, repeating the step A3 until the requirement is met, and gradually reducing the water replenishing volume of the fixed flushing agent container.
In a preferred embodiment, in step B2, during the process of discharging the flushing liquid in the low level waste liquid temporary storage mechanism 11 to the low level waste liquid storage mechanism 302, there are two ways to discharge the low level waste liquid.
First, by increasing the pressure in the vehicle-mounted waste collection container 110, the low level waste is pushed by the pressure into the low level waste storage mechanism 302. The process of discharging the low level waste liquid in this manner is as follows.
The low waste liquid storage mechanism 302 that puts is the ordinary pressure container, open first pressure-controlled pipeline 116, the decontamination solution discharge pipe 112, the low connecting tube 113 that puts, the low waste liquid receiving pipe 304 that puts and the third vacuum exhales the valve on the pipeline 306, close all the other valves on the vehicular waste liquid collecting container 110, utilize compressed air to pressurize the vehicular waste liquid collecting container 110, the effect of pressure is with the low waste liquid of putting along the decontamination solution discharge pipe 112, the low connecting tube 113 that puts, the low waste liquid receiving pipe 304 that puts impresses in the low waste liquid storage mechanism 302 that puts.
Second, the low level waste liquid in the vehicle-mounted waste liquid collection container 110 is sucked into the low level waste liquid storage mechanism 302 by sucking negative pressure in the low level waste liquid storage mechanism 302. The process of discharging the low level waste liquid in this manner is as follows.
The low waste liquid storage mechanism 302 of putting is the liquid raising ware, opens the valve on the third vacuum exhales the row pipeline 306, utilizes vacuum system to take out the negative pressure to low waste liquid storage mechanism 302 of putting, opens decontamination liquid discharge pipe 112, low connecting tube 113 of putting, low waste liquid receiving tube 304 of putting, and the effect of negative pressure will be put the waste liquid along decontamination liquid discharge pipe 112, low connecting tube 113 of putting, low waste liquid receiving tube 304 of putting and inhale in the low waste liquid storage mechanism 302 of putting.
In one embodiment, there are two ways to flush the waste liquid storage mechanism 302 by the flushing decontamination mechanism 12.
First, pressure is increased by the vehicle mounted rinse container 120, by which it is forced through a hose into the low waste storage mechanism 302.
The low-level waste liquid storage mechanism 302 is a normal-pressure container, valves on the second pressure-controlled pipeline, the flushing agent discharge pipeline 121, the low-level waste liquid receiving pipeline 304 and the third vacuum exhaling pipeline 306 are opened, other valves on the vehicle-mounted flushing agent container 120 are closed, the vehicle-mounted flushing agent container 120 is pressurized by using compressed air, flushing liquid is pressed into a hose along the flushing agent discharge pipeline 121 under the action of pressure, and the hose is pressed into the low-level waste liquid storage mechanism 302 through the low-level waste liquid receiving pipeline 304 after being flushed.
Second, the rinse liquid in the vehicle-mounted rinse agent container 120 is sucked into the low-level waste liquid storage mechanism 302 through a hose by sucking negative pressure in the low-level waste liquid storage mechanism 302.
The low waste liquid storage mechanism 302 of putting is a liquid raising ware, opens the valve on the third vacuum exhaling pipeline 306, utilizes vacuum system to take out the negative pressure to low waste liquid storage mechanism 302, opens flushing agent discharge pipe 121, low waste liquid receiving pipe 304, gets into the hose with the flush liquid along flushing agent discharge pipe 121 under the effect of negative pressure, inhales in the low waste liquid storage mechanism 302 through low waste liquid receiving pipe 304 after the flushing hose.
In this embodiment, the hose is mainly cleaned and decontaminated by vacuum suction and pressure air in steps B2 and B3, and the method is selected according to different situations, and has a wide application range. In the embodiment, the method realizes effective decontamination of the hose, ensures the safety of operators and maximally reduces the amount of secondary waste liquid. The vehicle-mounted waste liquid collection container 110 can separately collect and store low-level waste liquid generated in the decontamination process in a classified manner, thereby effectively minimizing waste and ensuring that the transport capacity is not reduced.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (14)
1. A washing device for a radioactive waste transport system, comprising:
the vehicle-mounted treatment device (1) comprises a temporary storage mechanism (13) for storing radioactive waste liquid, a temporary storage mechanism (11) for storing low-level waste liquid after washing a hose, and a washing decontamination mechanism (12) for storing washing liquid;
a receiving interface (2) configured to be able to provide a flushing liquid for flushing the hose; and
a discharge interface device (3) comprising a medium level effluent storage mechanism (301) and a low level effluent storage mechanism (302);
before transportation, the vehicle-mounted processing device (1) receives radioactive waste liquid and stores the radioactive waste liquid in the temporary storage mechanism (13) of the low-level waste liquid, the receiving interface device (2) is connected with the vehicle-mounted processing device (1) through a hose and provides a flushing liquid to flush the hose, and the flushed flushing liquid is stored in the temporary storage mechanism (11) of the low-level waste liquid;
after transportation, the discharge interface device (3) is connected with the vehicle-mounted processing device (1) through a hose, and the intermediate waste liquid storage mechanism (301) receives the radioactive waste liquid discharged by the intermediate waste liquid temporary storage mechanism (13); the low-level radioactive waste liquid storage mechanism (302) receives flushing liquid discharged by the low-level radioactive waste liquid temporary storage mechanism (11); the flushing decontamination mechanism (12) then flushes the hose and delivers the flushing liquid to the low level waste liquid storage mechanism (302).
2. Flushing device for radioactive waste liquid transport system according to claim 1, characterized in that the onboard disposal device (1) further comprises an onboard niche (14) provided with a connector, which onboard niche (14) receives or discharges radioactive waste liquid through a hose; and the middle-discharge waste liquid temporary storage mechanism (13), the low-discharge waste liquid temporary storage mechanism (11) and the flushing decontamination mechanism (12) are respectively connected with the vehicle-mounted niche (14).
3. The flushing device for radioactive waste transport systems according to claim 2, characterized in that the low level waste buffer means (11) comprises a vehicle-mounted waste collection container (110), the vehicle-mounted waste collection container (110) being connected to the vehicle-mounted niche (14) by a pipe; and the vehicle-mounted waste liquid collecting container (110) is connected with a vehicle-mounted vacuum pump and an air compressor.
4. An irrigation device for a radioactive waste transport system according to claim 3, wherein a first pressure gauge (114) and a first liquid level gauge (115) are provided on the vehicle-mounted waste collection container (110).
5. The washing apparatus for radioactive spent liquid transport system according to claim 4, wherein the vehicular spent liquid collecting container (110) is provided with a first pressure-controlled pipeline (116) connected to an air compressor, and a first vacuum exhaust pipeline (117) connected to a vacuum pump.
6. The flushing device for radioactive waste transport systems according to any of claims 3 to 5, characterized in that the flushing decontamination means (12) comprises an onboard flushing agent container (120), the onboard flushing agent container (120) being connected to the onboard niche (14) by a flushing agent discharge conduit (121), and the onboard flushing agent container (120) being connected to an air compressor.
7. The flusher apparatus for radioactive spent liquid transport system according to claim 6, wherein a second pressure gauge (125) and a second liquid level gauge (126) are provided on the vehicle-mounted flusher container (120), and a first drain pipe capable of communicating with the external atmosphere and a second pressure-controlled pipe (122) connected to an air compressor are provided on the vehicle-mounted flusher container (120).
8. The flushing device for radioactive waste transport systems according to claim 7, characterized in that the receiving interface device (2) comprises a radioactive waste storage container (201), and a stationary flushing agent container (202); the middle waste liquid storage container (201) and the fixed flushing agent container (202) are respectively connected with a fixed working box (203);
the fixed working box (203) can be connected with a hose to be further connected with the vehicle-mounted processing device (1), and when the vehicle-mounted processing device (1) receives radioactive waste liquid, the intermediate waste liquid temporary storage mechanism (13) is communicated with the intermediate waste liquid storage container (201) and receives the radioactive waste liquid; when the receiving is finished, the low-level waste liquid temporary storage mechanism (11) is communicated with the fixed flushing agent container (202) and receives flushing liquid of a flushing hose.
9. The flusher for radioactive spent liquid transport systems according to claim 8, wherein an air purification system is connected to the radioactive spent liquid storage container (201) through a second exhaust pipe (204); the fixed flushing agent container is provided with a liquid level meter, an overflow pipeline (207) connected with the floor drain system and a second detergent loading pipeline (208) connected with the water pipe.
10. The flusher for radioactive spent liquor transportation system according to claim 7, wherein a second vacuum exhaust pipe (305) connected with an exhaust gas treatment device is provided on the middle radioactive spent liquor storage means (301), and a third vacuum exhaust pipe (306) connected with an exhaust gas treatment device is provided on the low radioactive spent liquor storage means (302).
11. A decontamination method using a washing device for a radioactive waste transport system according to any one of claims 6 to 10, characterized by comprising:
in the process of receiving radioactive waste liquid by the vehicle-mounted processing device (1),
step A1, communicating the vehicle-mounted processing device (1) with the receiving interface device (2);
step A2, the temporary storage mechanism (13) for the released waste liquid receives the radioactive waste liquid of the receiving interface device (2);
step A3, after the receiving is finished, the receiving interface device (2) provides a flushing liquid flushing hose and receives the flushing liquid through a low-level waste liquid temporary storage mechanism (11);
in the process of discharging radioactive waste liquid by the vehicle-mounted processing device (1),
step B1, communicating the vehicle-mounted processing device (1) with the discharge interface device (3),
step B2, discharging the radioactive waste liquid in the intermediate waste liquid temporary storage mechanism (13) into an intermediate waste liquid storage mechanism (301), and discharging the flushing liquid in the low waste liquid temporary storage mechanism (11) into a low waste liquid storage mechanism (302);
and step B3, after the discharge is finished, flushing the hose through the flushing decontamination mechanism (12), and conveying the flushing liquid into the low-level waste liquid storage mechanism (302).
12. The method of claim 11 wherein after step A3 is completed, the level of radioactivity on the surface of the hose is measured using a long rod dose meter, and if the level of radioactivity does not meet the radiation protection requirements for direct human manipulation, the steps of step A3 are repeated until the requirements are met.
13. The method according to claim 11 or 12, wherein during the process of discharging the washing liquid in the low level waste liquid temporary storage mechanism (11) to the low level waste liquid storage mechanism (302), the low level waste liquid is pushed into the low level waste liquid storage mechanism (302) by pressure through increasing the pressure in the vehicle-mounted waste liquid collection container (110); or the low-level waste liquid in the vehicle-mounted waste liquid collection container (110) is sucked into the low-level waste liquid storage mechanism (302) by pumping negative pressure in the low-level waste liquid storage mechanism (302).
14. A method according to claim 13, characterized in that during the delivery of the flushing liquid to the low level waste liquid storage means (302) by the flushing decontamination means (12), the pressure is increased by means of a vehicle mounted flushing agent container (120) by which the flushing liquid is forced through a hose into the low level waste liquid storage means (302); or the flushing liquid in the vehicle-mounted flushing agent container (120) is sucked into the low-level waste liquid storage mechanism (302) through a hose by pumping negative pressure in the low-level waste liquid storage mechanism (302).
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| CN201910677964.2A CN110576004B (en) | 2019-07-25 | 2019-07-25 | Flushing device and method for radioactive waste liquid transportation system |
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| CN110576004B true CN110576004B (en) | 2021-02-19 |
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| CN202034074U (en) * | 2011-03-30 | 2011-11-09 | 西北核技术研究所 | Liquid radioactive waste treating device |
| KR101294679B1 (en) * | 2011-05-02 | 2013-08-09 | 황창성 | automatic module apparatus of changing equipment for moderator and resin |
| CN202461068U (en) * | 2012-01-10 | 2012-10-03 | 郭宝林 | Inner wall cleaning equipment for railway tank vehicle |
| CN104176693B (en) * | 2013-05-24 | 2018-02-16 | 中广核工程有限公司 | A kind of nuclear power station resin transfer equipment |
| JP2016022412A (en) * | 2014-07-17 | 2016-02-08 | 三菱重工業株式会社 | Wash device, wash method, and wash nozzle |
| CN106098129A (en) * | 2016-06-14 | 2016-11-09 | 中广核工程有限公司 | The portable online radioactive decontamination system of nuclear power station |
| CN107293343B (en) * | 2017-06-12 | 2019-04-12 | 航天晨光股份有限公司 | The loading and unloading transfer device and its conveyer method of nuclear power station spent resin |
| CN107293344B (en) * | 2017-08-04 | 2023-07-04 | 成都天翔环境股份有限公司 | Method for cleaning pipeline system of waste resin transfer tank car |
| CN107570510B (en) * | 2017-10-24 | 2021-07-02 | 张家港小木环境科技有限公司 | Nuclear magnetic pipe cleaning device system and using method |
| CN208157082U (en) * | 2017-12-21 | 2018-11-27 | 中国核电工程有限公司 | A kind of radioactivity boracic concentrate transportation system for nuclear power station |
| CN109473193B (en) * | 2018-12-20 | 2024-02-02 | 青岛东卡环保工程技术有限公司 | Low-level horizontally-arranged radioactive waste resin transferring, loading and unloading system and method |
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