TWI459404B - Method and Device for Subassembly of High Radiation Intensity Waste - Google Patents

Description

Method and device for dispensing high radiation intensity waste

The invention relates to a method and a device for dispensing high radiation intensity waste, in particular to an environment which can effectively avoid exposure to high radiation intensity during the dispensing process, and the temporary storage container also has sealing and filtering pressure relief. Function packaging method and device.

The high-radiation-strength waste generated in the nuclear energy industry has not yet developed its subsequent stabilization procedures due to its partial form, and cannot be sent to the storage warehouse for long-term storage. Therefore, the need for temporary packaging and storage is required; Pollution, and the reduction of harm to the human body and the environment, so most of the high-radiation intensity wastes are stored under water, and when the waste is cleaned and disposed of due to space constraints or decommissioning plans, the above-mentioned placement High-radiation-intensity waste under water must be removed and subjected to subsequent stabilization procedures for long-term storage. The staff must be very careful when removing the above-mentioned underwater high-radiation waste from the surface to avoid receiving excessive radiation doses. At the same time, it is necessary to have a sealed and filtered pressure-relief device container during the temporary storage period to avoid high Radiation intensity waste produces chemical changes to release gas accumulation and airborne pollution.

In view of the above-mentioned temporary storage operation of high-radiation waste, it is common practice to first make the operator itself radiation isolation protection, and then operate the related equipment to load the high-radiation intensity waste into a shielded temporary storage container. Therefore, in the operating environment where the high-radiation intensity waste is not effectively isolated, the leakage or contamination of the radioactive material cannot be properly restricted to a small space, so that the relevant operators and equipment still need to be exposed. In a dangerous environment; in addition, when high-radiation intensity waste is produced, its radioactive nuclear species and chemical properties must be analyzed, and some forms of The long-term storage of the radioactive waste must be stabilized before being stored in the barrel; therefore, during the temporary storage period, the gas which may be generated by the radiation cracking must be considered to accumulate in the container, causing deformation, damage or explosion of the container. The shielded temporary storage container shall take into consideration the functions of overall shielding, filtration pressure relief and reusability.

Therefore, how to effectively and safely store the high-radiation waste before the stabilization treatment, while taking into account the radiation dose of the staff, the radiation safety requirements during the temporary storage period, the container and the subsequent removal and disposal. Characteristics are an important topic to be considered.

In view of the above-mentioned shortcomings of the treatment methods and devices for high radiation intensity wastes, the inventors have made research on the improvement of these shortcomings, and finally the present invention has been produced.

The main object of the present invention is to provide a method for dispensing high-radiation intensity waste, which can reduce the waste batch processing amount and the activity contained therein by the dispensing process, and is beneficial to the improvement of the working environment of the personnel.

Another object of the present invention is to provide a method for dispensing high-radiation intensity waste, which utilizes a lead shield to perform a process of lifting the waste from the surface of the water, thereby reducing the amount of radiation that a person needs to withstand during operation.

Another object of the present invention is to provide a dispensing device for high-radiation intensity waste, wherein the structure of the shielded temporary storage container has the characteristics of shielding, sealing, filtering and pressure-reducing function and re-removable design, so that the application is applied. It can improve the safety during temporary storage and provide the need for reprocessing stability of high radiation intensity waste.

A further object of the present invention is to provide a dispensing device for high radiation intensity waste, which is The utility staff can perform the dispensing operation outside the lead shield, thereby effectively reducing the radiation dose of the worker and avoiding environmental floating pollution.

The technical means adopted by the present invention for achieving the above objects and effects include: a method for dispensing high-radiation intensity waste, which comprises at least: step S11: "extending a basket into a high-radiation waste The high-intensity waste is collected in the water storage tank by using a hanging device to move a basket into a water storage tank storing high-radiation waste, and pumping the storage tank Medium high radiant intensity waste enters the basket; step S12: "Raise the basket with high radiant intensity waste to the surface of the water and contain it in a lead shield", which will collect high radiation intensity The basket of waste rises above the surface of the storage tank, and is accommodated in a lead shield during the ascent of the basket, allowing the basket to dry the high radiation intensity in an environment that limits radiation leakage. Waste; step S13: "moving the basket containing the high-radiation waste into a shielded temporary storage container", moving the basket containing the dried high-radiation intensity waste to a shielded temporary storage Inside the container S15: "temporary storage container to seal the shield" so that the collected radiation has a high strength after drying waste basket to be sealed in the temporary storage container shielded.

According to the above method, wherein the step S15: "sealing the shielded temporary storage container" further includes a determining step S14: "whether the shielded temporary storage container can accommodate another basket" for confirming whether the shielded temporary storage container has The space for accommodating another basket is sufficient. If it is affirmative "Y", the step S13 is repeated: "moving the basket containing the high-radiation waste into a shielded temporary storage container".

The technical means adopted by the present invention further includes: a dispensing device for high radiation intensity waste, comprising at least: a suspension mechanism; a hand lift mechanism disposed under the suspension mechanism, the hand lift mechanism There is also a basket sling that extends downwards and is controlled to lift; a basket, Hanging on the basket sling, the basket has a receiving space for accommodating high-radiation waste, and a plurality of mesh holes are arranged at the bottom of the receiving space; a lead shield is disposed on the hanging The hanging shield is located on the lifting and lowering path of the basket, and the lead shield is provided with a downwardly opening receiving space for receiving the net basket with high radiation intensity waste inside.

According to the above structure, the hand lift mechanism is disposed above the lead shield, and a through hole is formed in the center of the lead shield, and the basket sling is connected to the basket through the through hole.

According to the above structure, the suspension mechanism has a hook that is controlled to be lifted or moved, and the hand lift mechanism and the lead shield are combined under the hook.

According to the above structure, the basket is provided with an opening above the receiving space, and a hanging rod is horizontally disposed in the opening, and the basket sling is threaded over the hanging rod to form a joint.

According to the above structure, the shutter is additionally coupled with a shutter, and the shutter is inclined with the pivoting of the boom, so that the opening above the receiving space is opened.

According to the above structure, the basket containing the high radiation intensity waste is contained in a shielded temporary storage container, and the shielded temporary storage container is composed of at least a container body and a shielded top cover. The accommodating space of the accommodating space is provided on the side of the accommodating space, and the shielding cap is provided on the opening of the accommodating space.

According to the above structure, the filter top cover is provided with a filter pressure relief device.

According to the above structure, an inner liner is further disposed on the outer side of the accommodating space of the container body, and an outer top cover is further disposed on the outer side of the shield top cover.

According to the above structure, the high-radiation intensity waste is at least one of granular and powdery.

As for the detailed construction, application principle, function and effect of the present invention, a complete understanding can be obtained by referring to the following description made with reference to the accompanying drawings.

Referring to FIG. 1 , it can be seen that the dispensing method of the present invention mainly comprises: Step S11: “extending a basket into a water storage tank storing high radiation intensity waste, and collecting the high radiation intensity waste. Step S12: "Raise the basket containing the high-radiation waste to the surface of the water and store it in a lead shield", step S13: "Move the basket containing the high-radiation waste to one In the temporary storage container, step S14: "Whether the shield temporary storage container can accommodate another basket", and step S15: "sealing the shield temporary storage container".

Referring to Figures 2 and 3, it can be seen that the dispensing device of the present invention mainly comprises: a suspension mechanism 1, a lead shield cover 2, a hand lift mechanism 3, and a basket 4, wherein the suspension mechanism 1 has a hook 11 that is controlled to be lifted or traversed, and a hand lift mechanism 3 is disposed under the hook 11 of the suspension mechanism 1, and the hand lift mechanism 3 is provided with a downwardly extending and controlled liftable net The basket sling 31 has a receiving space 45 with an opening at the bottom of the basket 4, and a plurality of mesh holes 43 are disposed at the bottom of the receiving space 45. A hanging rod 41 is horizontally disposed in the opening of the receiving space 45. The cable 31 is sleeved on the suspension rod 41 to form a hanging connection, and the suspension rod 41 is further coupled with a shutter 42 covering the opening of the receiving space 45, and the shutter 42 can be attached to the suspension rod 41. Pivoting and tilting, and a plurality of stacked anti-tip sheets 44 may be disposed on the bottom side of the bottom of the basket 4 as needed to facilitate stacking of the plurality of baskets 4, and the lead shield 2 is coupled to the plurality of shield slings 21 via the plurality of shield slings 21 a hook 11 of the suspension mechanism 1 and located below the hand lift mechanism 3, the lead shield 2 is provided with a downward The mouth of the receiving space 22, for receiving the The basket 4 is provided with a through hole 23 through which the basket sling 31 passes in the center of the top side of the accommodating space 22, so that the lead shield 2 is disposed on the lifting and lowering path of the basket 4.

The basket 4 can be housed in a shielded temporary storage container 5. The shielded temporary storage container 5 is composed of at least a container body 51 and a shielding top cover 53. The container body 51 is provided with an opening and accommodates therein. The accommodating space 511 is disposed on the circumference of the accommodating space 511, and a shielding body 512 for blocking radiation is disposed on the inner side of the accommodating space 512, and an inner liner 52 is further disposed on the inner circumferential side of the shielding body 512. The outer peripheral side of the main body 51 is provided with a lifting ring 513, and the radiation-resistant shielding top cover 53 is provided with a plurality of fixed locks 531 on the circumferential side for sealingly covering the shielding top cover 53 to the opening of the receiving space 511. The filter top cover 53 is provided with a filter pressure relief device 532 having a filtering and pressure releasing function. On the outer side of the shielding top cover 53, an outer top cover 54 can be additionally provided, and the outer top cover 54 is provided with an outer cover 54 The ring 542 is fixed on the upper and outer peripheral sides of the shielding top cover 53, and the outer top cover 54 is also provided with a filter pressure relief device 541 at a portion corresponding to the filter pressure relief 532.

Referring to Figures 4 to 8, the following describes the operation mode of the present invention only with reference to the flow of Fig. 1. First, step S11: "With a basket extending into the water storage storing high radiation intensity waste. In the tank, and collecting the high-radiation intensity waste, the hanging basket 4 (suspension mechanism 1 and the hand-lifting mechanism 3) is used to move the basket 4 into a high-radiation waste 6 (which may be granular, In the storage tank 7 of the powder, there is water 70 in the storage tank 7 for blocking the radiation of the high-radiation intensity waste 6, and a pump 71 is further provided, and the pump 71 is respectively provided at the input end and the output end thereof. There is a conduit 711, 712 through which the high radiant intensity waste 6 in the storage tank 7 is sucked by the pump 71, and the high radiant intensity waste 6 is discharged into the basket 4 by the conduit 712 (e.g. Figure 4); after a step S12: "There will be high-radiation collection The basket of the intensity of the waste rises to the surface of the water and is contained in a lead shield." The basket that collects the high-radiation waste 6 is raised above the surface of the storage tank 7, and is also contained therein. The accommodating space 22 of the lead shield 2 allows the basket 4 to drip the water 70 in the high radiant intensity waste 6 through the mesh 43 in the lead shield 2 (with an environment for limiting radiation leakage) (eg Figure 5): Step S13: "Moving the basket with high radiation intensity waste into a shielded temporary storage container" by the hanging device (suspension mechanism 1 and hand lift mechanism 3 Moving the basket 4 of the collected high-radiation intensity waste 6 into the shielded temporary storage container 5 (as shown in Fig. 6); and judging by step S14: "Whether the shielded temporary storage container can be accommodated Another basket is used to confirm whether the shielded temporary storage container 5 has sufficient space for accommodating another basket 4, and if it is positive "Y", the step S13 is repeated: "The high-radiation waste will be collected. The basket is moved into a shielded temporary storage container to fully accommodate the shielded temporary storage container 5 The basket 4, and each of the baskets 4 can be stably stacked by stacking the anti-roll tabs 44. Finally, in step S15: "sealing the shielded temporary storage container", the shield top cover 53 is first closed to the container body The accommodating space 511 of the 51 is opened, and is fixed by a fixed lock 531 (as shown in FIG. 7), and then the outer top cover 54 is closed and fixed to the outer surface of the shielding top cover 53 by a ring 542 ( As shown in Fig. 8, the basket 4 in which the dried high-radiation intensity waste 6 is collected is sealed in the shield temporary storage container 5.

In the above structure of the present invention, the filter pressure relief device 541 of the outer top cover 54 is assembled with the filter pressure relief device 532 on the shield top cover 53. The filter pressure relief device 532, 541 can be When the internal gas pressure of the temporary storage container 5 is too large, a filtering and pressure releasing function is externally generated to prevent the chemical radiation of the high radiation intensity waste 6 from being accumulated and floating.

It can be seen from the above that the method and device for dispensing the high radiation intensity waste of the invention have the advantages of avoiding exposure to high radiation intensity environment during the dispensing process, and the sealed temporary storage container has sealing, filtering pressure relief and easy The effect of re-extracting has indeed been industrially utilized, novel and progressive.

The above description is only a preferred embodiment of the invention and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the patent application of the present invention are covered by the scope of the invention.

1‧‧‧suspension mechanism

11‧‧‧ hook

2‧‧‧ lead shield

21‧‧‧Shield sling

22‧‧‧ accommodating space

23‧‧‧through hole

3‧‧‧Hand lift mechanism

31‧‧‧ basket sling

4‧‧‧ basket

41‧‧‧Boom

42‧‧‧ visor

43‧‧‧ mesh

44‧‧‧Stacked anti-rolling sheet

45‧‧‧ accommodation space

5‧‧‧Shield temporary storage container

51‧‧‧ container body

511‧‧‧ accommodating space

512‧‧‧Shield

513‧‧‧ rings

52‧‧‧Insert liner

53‧‧‧Shield top cover

531‧‧‧Fixed lock

532, 541‧‧‧Filter pressure relief

54‧‧‧outer cover

542‧‧‧Seal

6‧‧‧Waste

7‧‧‧ storage tank

70‧‧‧ water

71‧‧‧ pump

711, 712‧‧ ‧ catheter

Figure 1 is a flow chart of the method of operation of the present invention.

Figure 2 is a schematic view showing the construction of the related suspension assembly of the present invention.

Figure 3 is an exploded perspective view of the shielded temporary storage container of the present invention.

Fig. 4 is a schematic view showing the action of collecting the high-radiation intensity waste in the storage tank of the basket of the present invention (1).

Figure 5 is a schematic view showing the action of collecting the high-radiation intensity waste in the storage tank of the basket of the present invention (2).

Figure 6 is a schematic view showing the action of the basket of the present invention placed in a shielded temporary storage container.

Figure 7 is a schematic view showing the operation of the first closed shield temporary storage container of the present invention.

Figure 8 is a schematic view showing the action of the second closed shield temporary storage container of the present invention.

S11‧‧‧ Extends a basket into a water storage tank containing high-radiation waste and collects the high-radiation waste

S12‧‧‧ Raise the baskets containing high-radiation waste to the surface of the water and house them in a lead shield

S13‧‧· Move the baskets containing high-radiation waste to a shielded temporary storage container

S14‧‧‧Whether the shielded temporary storage container can accommodate another basket

S15‧‧‧ Sealing the shielded temporary storage container

Claims (11)

A method for dispensing high radiation intensity waste, comprising at least the following steps: Step S11: "extending a basket into a water storage tank storing high radiation intensity waste and collecting the high radiation intensity waste" Using a hanging device to move a basket into a water storage tank storing high radiation intensity waste, and pumping the high radiation intensity waste in the storage tank into the basket by a pump; step S12 : "The basket that collects the high-radiation waste is raised to the surface of the water and contained in a lead shield", which is to raise the basket containing the high-radiation waste to the top of the storage tank, and During the ascent of the basket, it is also contained in a lead shield, so that the basket can dry the high-radiation waste in an environment that limits radiation leakage; Step S13: "Collecting high-radiation waste The basket is moved into a shielded temporary storage container, and the basket for collecting the dried high-radiation waste is moved into a shielded temporary storage container; step S15: "sealing the shielded temporary storage container", Make the collection High radiation intensity after the drying of the waste basket to be sealed in the temporary storage container shielded. The method for dispensing high-radiation waste according to claim 1, wherein the step S15: “sealing the shield temporary storage container” further includes a determining step S14: “ whether the shielding temporary storage container can be accommodated Another basket is used to confirm whether the shielded temporary storage container has sufficient space for accommodating another basket. If it is positive "Y", the step S14 is repeatedly executed: "The high-radiation waste will be collected. The basket is moved to a shielded temporary storage container." A dispensing device for high radiation intensity waste, comprising at least: a suspension mechanism; a hand-drawn lifting mechanism is disposed under the suspension mechanism, and the hand-drawn lifting mechanism further comprises a basket sling extending downwardly and controlled to be lifted; a basket is hung on the basket sling a accommodating space for accommodating high radiant intensity waste is disposed in the net basket, and a plurality of mesh holes are disposed at the bottom of the accommodating space; a lead shielding cover is disposed under the hanging mechanism and is located at the lifting and lowering of the net basket In the active path, the lead shield is provided with a downwardly open receiving space for receiving the net basket having high radiation intensity waste inside. The apparatus for dispensing high-radiation waste according to claim 3, wherein the hand-lifting mechanism is disposed above the lead shield, and a through hole is arranged in the center of the lead shield, the basket hanger The cable is connected to the basket through the through hole. The apparatus for dispensing high-radiation waste according to claim 3, wherein the suspension mechanism has a hook that is controlled to be lifted or moved, and the hand lift mechanism and the lead shield are combined Hook under. The apparatus for dispensing high-radiation waste according to claim 3, wherein the basket is provided with an opening above the receiving space, and a hanging rod is horizontally disposed in the opening, and the basket sling is worn The sleeve is sleeved to form a joint. The apparatus for dispensing high-radiation-intensity waste according to claim 6, wherein the hanging rod is further combined with a shutter, and the shutter is inclined with the pivoting of the boom to make the receiving space The opening above is opened. The apparatus for dispensing high-radiation waste according to claim 3, wherein the basket containing the high-radiation waste is contained in a shielded temporary storage container, and the shielded temporary storage container is at least a container body and a shielding top cover, the container body is provided with an opening The accommodating space of the accommodating space is provided on the circumference of the accommodating space, and the shielding cover is provided on the opening of the accommodating space. The apparatus for dispensing high radiation intensity waste according to claim 8, wherein the filter top cover is provided with a filter pressure relief device. The apparatus for dispensing a high-radiation-intensity waste according to the invention of claim 8, wherein the inner side of the housing space of the container body is further provided with an inner liner, and an outer top is further disposed on the outer side of the shielding top cover. cover. The apparatus for dispensing high radiation intensity waste according to claim 3, wherein the high radiation intensity waste is at least one of granular and powdery.