Inverted source system and usage method for recycling waste industrial cobalt-60 source rods

Abstract

This invention proposes a flip-feed source system and method for recycling waste industrial cobalt-60 source rods. The system includes a detachable connecting mechanism, a handle component, a source rod basket, a source rod clamp, a loading / unloading workbench, a loading slide rail, and a source holding frame shelf. The handle component includes at least one of a source holding frame module clamp, a source rod fork, a source rod shovel, a magnifying glass, a straight hook, and a curved hook. The detachable connecting mechanism includes an inner tube component, a spring locking device, and an outer tube component. The connecting mechanism uses a spring-loaded locking plate to connect and disconnect long rods of different lengths from the handle component and / or the source rod clamp. This system and method effectively solve the problem that existing source rod flip-feed systems cannot reliably and flexibly operate waste industrial cobalt-60 recycling source rods, shortening the flip-feeding time, reducing the labor intensity of operators, improving work efficiency, and reducing safety risks for operators.

Description

Technical Field

[0001] This invention relates to the field of nuclear technology utilization equipment technology, and in particular to the inverted source system and method of using waste industrial cobalt-60 recycling source rods. Background Technology

[0002] Radioactive sources play a crucial role in the nuclear technology application industry, and their applications are becoming increasingly widespread. As radioactive sources reach the end of their service life, they need to be decommissioned. Decommissioning radioactive sources typically involves handing them over to the production unit or temporarily storing them in a municipal radioactive waste repository. For high-activity radioactive sources like industrial irradiation cobalt-60 sources, the activity of a single cobalt source will still be approximately 720 / 860 curies when it reaches its decommissioning age.

[0003] my country's annual production of high-activity industrial irradiation cobalt-60 radioactive sources averages around 7 million curies (600 sources). Hundreds of these sources are decommissioned each year, and previously, the only method for decommissioning these sources was storage at disposal sites. This method not only increased storage pressure on disposal sites and added disposal costs for users, but also hindered resource conservation and environmental protection. Recycling and reusing waste cobalt sources can extend the lifespan of domestically produced cobalt sources, reduce the amount of waste radioactive sources requiring disposal, alleviate storage pressure on disposal sites, and ultimately achieve the goals of resource conservation and environmental protection.

[0004] However, the most critical issues to be addressed in the recycling and reuse of waste cobalt sources are the repackaging and flipping of the source rods. The flipping operation involves removing a new source rod from the radioactive source transport shielding container or storage well waiting area and placing it onto the source holding frame module, which is then installed onto the source rack equipment. Depending on the structure of the source rack, sometimes the source rod is directly placed onto the source rack equipment. During service, as the radioactive source decays, new source rods need to be replenished periodically, and the positions of existing source holding frames and source rods need to be adjusted. When the radioactive source rod reaches the end of its service life, it is removed from the source rack or source holding module and transported to a hot chamber for disassembly and final decommissioning. This entire series of operations involving the source rod is called the source flipping operation.

[0005] To ensure sufficient activity of the reusable source for production use, seven old sources are currently combined into a new type of reusable source. The diameter of the new source is nearly four times that of the old source, and its weight is 14 times that of the old source. The existing inverted source system cannot achieve flexible and reliable operation of the new source. The old system has several major problems: First, the new source and its compatible source housing module are very heavy, and the inverted source operation requires frequent disassembly and replacement of operating rods of different lengths depending on the working depth, while the existing rods are threaded connections, requiring a long time for each disassembly and assembly, posing a significant challenge to the operator's physical strength; second, the existing inverted source operation method relies entirely on operators carrying the heavy source rod assembly back and forth on foot to transfer the radioactive source from the storage well to the vicinity of the source rack, greatly increasing the labor intensity and operation time, leading to reduced efficiency, and prolonged operation near the storage well also increases the risk of personnel falling into the water. Finally, there is the issue of source rod alignment: under normal circumstances, the source rod is always in a vertical position throughout the entire inverted process from being removed from the shielding container to being installed on the source rack equipment. In actual source relocation operations, source rods often detach from the operating tools and fall to the bottom of the source well in a horizontal position due to operational errors or other reasons. Since the new source rods are significantly larger and heavier than the old ones, the original source rod clamps, regardless of their structure or operating force, cannot firmly control one end of the source rod to restore it to a vertical position for subsequent operations. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing inverted source technology and provide a complete inverted source system and operating method for recycling waste industrial cobalt-60 source rods. It solves the problem that existing inverted source rod systems cannot reliably and flexibly operate waste industrial cobalt-60 source rods, shortens the inverted source time, reduces the labor intensity of operators, improves work efficiency, and reduces the safety risks to operators. This makes the recycling of waste industrial cobalt-60 radioactive sources a reality, thereby minimizing the difficulty and cost of radioactive waste disposal.

[0007] A flip-feed source system for recycling waste industrial cobalt-60 source rods includes a detachable connecting mechanism, a handle component, a source rod basket, a source rod clamp, a source loading and unloading workbench, a source loading slide rail, and a source holding frame shelf; the handle component includes at least one of a source holding frame module clamp, a source rod fork, a source rod shovel, a magnifying glass, a locking pliers, a straight hook, and a curved hook.

[0008] The detachable connecting mechanism includes an inner tube component, a spring locking device, and an outer tube component. The connecting mechanism uses a spring-loaded locking plate to connect and separate long rods of different lengths from the handle component and / or the source rod clamp.

[0009] The Shengyuan frame module clamp includes a guide assembly and an escapement device. The Shengyuan frame module clamp is fitted with the long rod connector of the corresponding length through the spring-loaded locking plate and positioning post of the outer tube component. The guide assembly is located on both sides of the escapement device. The guide assembly is a thin-walled profiled sheet machining part, and its shape is configured to accurately position the Shengyuan frame module. The escapement device is connected to the lower end of the outer tube component by rivets, and the screw inside it can rotate freely.

[0010] The source rod fork includes a fork body assembly; the source rod fork is fitted with the long rod connector of the corresponding length via a spring-loaded locking plate and positioning post of the outer sleeve component; the fork body at the end of the source rod fork is used to pick up individual source rods scattered at the bottom of the source storage well, and / or to pick up and place individual source rods on the source rack or loading and unloading workbench; optionally, the posture straightening operation of the source rod is completed at the same time as picking up and placing the source rod;

[0011] The source rod shovel includes a shovel body assembly, which is fitted with the long rod connector of the corresponding length via a spring-loaded locking plate and positioning post of the outer sleeve component. The shovel body assembly is connected to the lower end of the outer sleeve component by rivets and is used to scoop up one or more source rods scattered at the bottom of the source well and transfer them to a suitable area.

[0012] The magnifying glass includes a tube clamp assembly and a lens assembly. The tube clamp assembly is used to fix the lens assembly to the front of the long rod tube and read the engraved code on the top of the source rod while operating the source rod.

[0013] The locking plate clamp includes a clamp body plate. The locking plate clamp is fitted with the long rod connector of the corresponding length through the spring-loaded locking plate buckle and positioning post of the outer tube component. The clamp body plate is connected to the lower end of the outer tube component by rivets and is used to open or close the protective locking plate of the source frame by rotating the clamp body plate.

[0014] The straight hook and / or curved hook are fitted to the corresponding length of long rod connector via the spring-loaded locking plate and positioning post of the outer tube component. The straight hook or curved hook is connected to the lower end of the outer tube component by rivets and is used to operate the source rod basket or underwater rope.

[0015] The source rod clamp includes an extension tube, a threaded sleeve, a threaded tube, a clamp body, a clamp head, a push rod assembly, and a trigger assembly; wherein the clamp head and the front end of the clamp body are connected by screws, and the clamp head has an annular chuck; the rear end of the clamp body is connected to the extension tube, multiple extension tubes are connected to each other, and the extension tubes are connected to the trigger assembly by threaded sleeves and threaded tubes to form the required length, and push rod assemblies of corresponding lengths are installed inside the multiple extension tubes;

[0016] The loading and unloading source workbench includes a source frame tray, upper and lower frames, a hanging frame, and a basket tray, which are installed on hooks on the source well wall to realize the pre-filling of the source rod from the storage basket to the source frame module on the loading and unloading source workbench.

[0017] The loading slide rail includes a track component, a slide rail clamp, a guide wheel assembly, and a universal hook, so that the loading slide rail is installed under the source well cover during loading, and the universal hook is used to pull the source holding frame module or source rod storage and transportation basket back and forth between the source rod preparation and pre-filling area and the target source frame area.

[0018] The source-generating frame includes a channel plate component, a base, and reinforcing ribs, and is used to place the source-generating frame module or source rod source-generating frame module with extremely low activity that is no longer of use at the bottom of the source well for temporary or long-term storage.

[0019] Furthermore, the inner tube component of the detachable connecting mechanism also includes a positioning post, and the tube wall has a locking plate limiting elongated hole and a locking plate operation long elongated hole; the inner tube also includes a locking plate, which is used to swing slightly around the fixed axis in its middle under the action of a torsion spring; the outer tube component also includes an L-shaped positioning post sliding groove in the tube wall and another locking plate limiting elongated hole corresponding to the inner tube component, so as to install the inner tube component or the outer tube component on the handle component, the source rod clamp and / or the extension tube respectively.

[0020] Furthermore, the fork assembly of the source rod fork also includes a fork plate. The slot width of the fork plate is smaller than the outer diameter of the source rod end plug head and larger than the outer diameter of the end plug neck. The length of the slot is greater than twice the diameter of the end plug head. The end of the fork plate has an arc-shaped, rolled edge.

[0021] Furthermore, the source rod clamp has a pair of annular clamps, and the inside of the clamps has bosses for constraining the source rod.

[0022] Furthermore, the power supply slide rail device also includes a C-shaped fixing tube. The power supply slide rail includes two slide rail clamps, which are mounted on the C-shaped fixing tube by bolt clamps. The position of the slide rail clamps is configured to be adjustable within the length of the C-shaped fixing tube, so as to adapt to different sizes of manhole covers by adjusting the spacing between the two slide rail clamps. The power supply slide rail device also includes a rocker assembly, which includes a wheel frame, a rope wheel, and a rocker handle. The rope wheel has two rope grooves, and a traction steel wire rope is wound inside each of the rope grooves. The two traction steel wire ropes are wound in opposite directions in the rope grooves. The other ends of the two traction steel wire ropes are connected and fixed to a universal hook located in the slide rail track by a guide wheel assembly.

[0023] Furthermore, the method is based on the aforementioned inverted source system for recycling waste industrial cobalt-60 source rods, and the method includes:

[0024] S01, Initial preparation work: Remove part of the source well cover, keep part for the operator to use and move it to a suitable position. Use nylon rope to put the loading and unloading workbench into the source well from above the source bar preparation and pre-filling area and suspend it on the well wall. Install the source loading slide rail under the reserved well cover and fix it with the edge of the well cover using the slide rail clamp component. Assemble the long-handled operating tool. The assembly of the long-handled operating tool includes: aligning the positioning post of the inner tube of the detachable connecting mechanism with the L-shaped groove of the outer tube, inserting the inner tube along the groove, and rotating it 90 degrees after it is in place so that the inner tube and the outer tube are reliably connected as one.

[0025] S02, Prepare empty source frame modules for loading: Use a long-handled hook tool to hook the lifting ring on the upper part of the source rod basket and transfer it from the storage position at the bottom of the source well to the basket storage area on the source loading and unloading workbench; Use a locking plate pliers tool to open the protective locking plate on the top of the source rack module channel, align the locking plate pliers and lock them on the operating plate of the protective locking plate, rotate them horizontally 90 degrees away from the center of the source rack, and the module channel will be opened. Repeat this operation to open all the protective locking plates on the source rack module channel; Use the source frame module fixture to pick up all the source rack module channel cover plates and place them in the predetermined position on the source loading and unloading workbench or source frame shelf through the source loading slide rail. Repeat this operation multiple times until all the cover plates on the source rack module channel are removed and placed properly; Use the source frame module fixture to pick up the source frame modules that need to be inverted in the source rack and place them in the predetermined position on the source loading and unloading workbench or source frame shelf through the source loading slide rail. Repeat this operation multiple times until all positions are filled with source frames.

[0026] S03, Installing a new source bar into the source bar frame module: including loading using a source bar fork and loading using a source bar clamp.

[0027] The loading process using the source bar fork involves selecting a suitable length of tubing, assembling the source bar fork and handle into a long-handled operating tool, aligning the fork slot with the neck of the source bar end plug in the source bar storage basket, adjusting the height and moving the slot forward towards the end plug until the end plug neck is fully inside the fork slot, and confirming that the source bar will not slip off the fork. Then, raise the source bar until it is completely removed from the source bar storage basket. Move the source bar to the corresponding channel above the source frame module, align it with the channel, and lower the source bar until the bottom of the source bar contacts the bottom plate of the source frame. Move the source bar fork horizontally until the fork slot is completely away from the source bar, thus completing the source bar loading. Repeat the above operations to load other source bars until all planned loading channels within the source frame module are filled with new source bars.

[0028] The loading process using the source rod clamp includes: selecting a suitable length of connecting tube to assemble the clamp body, clamp head, push rod assembly, and trigger assembly into a long-handled operating tool; initially aligning the clamp head with the source rod and bringing it close to the source rod; adjusting the height so that the lower part of the clamp head contacts the upper surface of the source rod body; operating the trigger to open the clamp head so that the source rod end plug in the source rod storage basket enters the middle of the clamp opening; operating the trigger to close the clamp head so that the radiation rod end plug is enclosed inside the clamp head; after confirming that the source rod has been reliably restrained by the clamp head and will not fall off, raising the source rod until it is completely removed from the source rod storage basket; moving the source rod above the source frame module, locating the loading channel, lowering the source rod and bringing it into contact with the bottom plate of the source frame; operating the trigger to open the clamp head; retracting the clamp to completely remove it from the source rod; and then releasing the trigger to complete the source rod loading; repeating the above operations to continue loading other source rods.

[0029] S04, Confirmation of the new source bar code: Loosen the bolts on the tube clamp of the magnifying glass and initially install the magnifying glass onto the extension tube of the long-handled tool; place the long-handled tool with the magnifying glass on the upper surface of the source bar body, observe the image inside the magnifying lens with a telescope, and read the code of the source bar.

[0030] S05, Reset the source frame module: Use the source frame module fixture to pick up the source frame module that has been flipped on the source loading and unloading workbench or source frame shelf, and place it in the predetermined position in the source shelf through the source loading slide rail. Repeat this operation multiple times until all empty spaces in the source shelf are filled with source frames. Use the source frame module fixture to pick up the source shelf channel cover plate of the source loading and unloading workbench or source frame shelf, and place it back on top of the uppermost source frame module in the source shelf through the source loading slide rail. Repeat this operation multiple times until the channel cover plate at the top of each channel on the source shelf is in place.

[0031] S06, Finishing: Use a locking plate pliers tool to close the protective locking plates of the source rack. Align the locking plate pliers with the operating plate of the protective locking plate and rotate it horizontally 90 degrees toward the center of the source rack to close the module channel. Repeat this operation to close all the protective locking plates on the source rack module channel. After completion, other personnel should use a telescope to double-check and record the results. Check and confirm that all source holding frames on the loading and unloading workbench under the source storage well have been emptied and that no radioactive source rods are left behind. Check and confirm that the source holding frame shelves and source rod storage and transportation baskets that need to be removed from the source storage well have no radioactive source rods left behind. Use a long-handled hook tool to remove the new source rod storage and transportation baskets from the source well. Remove the loading and unloading workbench from the source well. Disassemble and recover the source loading slide rails. Disassemble and recover all kinds of long-handled operating tools. Reinstall the removed source well cover.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] 1. Compared with the existing threaded method, the interconnection method of various source loading tools in the waste industrial cobalt 60 recycling source rod flip source system of the present invention has a quick disassembly and assembly connection mechanism, which greatly shortens the time for disassembling and reassembling source loading tools. For those who need to frequently change tool length, especially for carrying heavy source rods or source modules to disassemble and assemble long-handled tools, it can significantly improve efficiency and reduce the labor intensity of operators.

[0034] 2. The waste industrial cobalt-60 recycling source rod inverted source loading system of this invention is designed and configured with a source loading slide rail device. Compared with the original source loading operation and transportation method, which relied entirely on operators carrying the source rod assembly back and forth on foot to transfer the radioactive source and source frame module from the source storage well waiting area to the vicinity of the source rack, this transportation section no longer requires personnel to carry the heavy source rod assembly by hand at the source well opening. This improves transportation efficiency, reduces the labor intensity of operators, and also reduces the risk of falling into water caused by operators operating at the source storage well opening for a long time.

[0035] 3. The source rod fork and source rod clamp used in the waste industrial cobalt-60 recycling source rod inversion system of the present invention, through the special design of the fork plate and clamp, can reliably pick up and change the posture of large-mass source rods. The original tools require additional operating equipment to change the posture of the source rod, which is relatively cumbersome and cannot be operated on large-mass source rods. However, changing the posture of the source rod, especially the uprighting operation of the source rod, is very common during source inversion.

[0036] 4. The method of using the waste industrial cobalt-60 recycling source rod inverted source system of the present invention can safely, reliably, and efficiently complete the inverted operation of large-size, high-mass industrial cobalt-60 recycling source rods. This makes the recycling and reuse of waste cobalt sources possible, extends the service life of domestically produced cobalt sources, reduces the amount of final waste radioactive sources to be disposed of, alleviates the storage pressure on disposal sites, and further achieves the goals of saving resources and protecting the environment. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the equipment layout of the inverted source system for the reuse of waste industrial cobalt 60 in an embodiment of the present invention.

[0038] Figure 2 This is a schematic diagram of the equipment layout of a waste industrial cobalt-60 recycling source rod inverted source system according to another embodiment of the present invention.

[0039] Figure 3 This is a schematic diagram of the source bar clamp according to an embodiment of the present invention.

[0040] Figure 4 This is a diagram of the equipment components of various source loading tools in the inverted source loading system for the reuse of waste industrial cobalt 60 source rods according to an embodiment of the present invention.

[0041] Figure 5 This is a schematic diagram of the quick-disassembly and assembly connection mechanism according to an embodiment of the present invention.

[0042] Figure 6 This is a schematic diagram of the structure of the Shengyuan frame module fixture according to an embodiment of the present invention.

[0043] Figure 7 This is a schematic diagram of the source rod fork in an embodiment of the present invention.

[0044] Figure 8 This is a schematic diagram of the structure of the source bar shovel according to an embodiment of the present invention.

[0045] Figure 9 This is a schematic diagram of the magnifying glass in an embodiment of the present invention.

[0046] Figure 10 This is a structural diagram of the source rod clamp according to an embodiment of the present invention.

[0047] Figure 11 This is a component diagram of the power supply slide rail according to an embodiment of the present invention.

[0048] Figure 12 This is a component diagram of the loading and unloading source workbench according to an embodiment of the present invention.

[0049] Figure 13 This is a component diagram of the Shengyuan frame shelf according to an embodiment of the present invention.

[0050] Figure 14 This is a schematic diagram of the source rod structure for implementing the present invention.

[0051] Figure 15 A schematic diagram of the structure of the source frame module and source rack channel cover plate in an embodiment of the present invention.

[0052] Figure 16 This is a schematic diagram of the source frame structure according to an embodiment of the present invention.

[0053] Example

[0054] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0055] The technical solution of the present invention is: a flip-feed source system for recycling waste industrial cobalt 60 source rods, including a quick-disassembly and assembly connection mechanism, a source frame module clamp, a source rod fork, a source rod shovel, a magnifying glass, locking pliers, source rod basket straight hooks and curved hooks, source rod clamps, a source loading and unloading workbench, a source loading slide rail, and a source frame shelf.

[0056] The quick-release connection mechanism includes an inner tube component, a spring locking device, and an outer tube component; this connection mechanism enables the quick assembly and disassembly of various operating tool heads, long rods of different lengths, and handle components through a spring-loaded locking plate buckle.

[0057] The Shengyuan frame module fixture includes an outer tube component, a guide assembly, and an escapement device. The outer tube component can be fitted with a long rod of appropriate length via a spring-loaded locking plate and positioning pin. The guide assembly, located on both sides of the escapement device, is a thin-walled profiled sheet material. Its shape allows for accurate positioning of the Shengyuan frame module on the source frame or loading / unloading workbench. The escapement device is riveted to the lower end of the outer tube component, and its internal screw can rotate freely. After the Shengyuan frame module is accurately positioned, rotating the screw securely engages the upper end of the module with the screw, allowing the Shengyuan frame module to be reliably picked up and placed in the predetermined position. Rotating the screw in the opposite direction allows the source frame module fixture to detach from the Shengyuan frame module.

[0058] The source rod fork includes an outer tube assembly and a fork body assembly; the outer tube assembly can be fitted with a long rod connector of appropriate length via a spring-loaded locking plate and positioning pin. The fork body at the end can pick up individual source rods scattered at the bottom of the source well, and can also be used to pick up and place individual source rods on the source rack or source loading and unloading workbench.

[0059] The source rod shovel includes an outer sleeve assembly and a shovel body assembly. The outer sleeve assembly can be fitted with a long rod connector of appropriate length via a spring-loaded locking plate and positioning pin. The shovel body is riveted to the lower end of the outer sleeve assembly and can scoop up one or more source rods scattered at the bottom of the source well and transfer them to a suitable area.

[0060] The magnifying glass includes a clamp assembly and a lens assembly; the clamp assembly can fix the lens assembly at a suitable position at the front of the long rod connector, and read the engraved code on the top of the source rod while operating the source rod.

[0061] The locking clamp includes an outer tube assembly and a clamp body plate. The outer tube assembly can be fitted with a long rod of appropriate length via a spring-loaded locking plate latch and positioning pin. The clamp body plate is riveted to the lower end of the outer tube assembly. By rotating the clamp body plate, the protective locking plate of the source rack can be opened or closed.

[0062] The source rod basket straight and curved hooks include an outer tube component, a straight hook component, and a curved hook component; the outer tube component can be fitted with a long rod connector of appropriate length via a spring-loaded locking plate and positioning post. The straight or curved hook at the end is connected to the lower end of the outer tube component by rivets and is used to operate the source rod storage and transportation basket or underwater rope.

[0063] The source bar clamp includes an extension tube, a threaded sleeve, a clamp body, a clamp head, a push rod assembly, and a trigger assembly. The clamp head and the front end of the clamp body are connected by screws, and different clamp head shapes can be used to match different source bars. The rear end of the clamp body is connected to the extension tube, the extension tube itself, and the trigger to the required length via threaded sleeves. The push rod assembly of the corresponding length is installed inside the extension tube.

[0064] The loading and unloading workbench includes a source frame tray, upper and lower frames, a hanging frame, and a basket tray. When needed, it can be installed on hooks on the source well wall. The pre-filling of source rods from the storage basket to the source frame module can be completed on the loading and unloading workbench. Because its operating distance is shorter and the visual conditions are better than operating directly at the bottom of the source well, and multiple source rod baskets can be processed in batches, the operation is more convenient and efficient.

[0065] The source loading slide rail includes track components, slide rail clamps, guide wheel sets, and universal hooks. When loading the source, the equipment is installed under the source well cover. It can use a steel wire rope to pull the universal hook to transport the source frame module or source rod storage and transportation basket back and forth between the source rod preparation and pre-filling area and the target source rack area. Compared with the previous method of relying on pure manual foot transport, this can greatly reduce the labor intensity of operators.

[0066] The source frame shelf includes a channel plate component, a base, and reinforcing ribs. It is placed at the bottom of the source well for temporary or long-term storage of empty source frame modules or source rods with extremely low activity that are no longer of use.

[0067] A further technical solution of the present invention is as follows: the inner tube component of the quick-disassembly and detachable connecting mechanism also includes a positioning post; a locking plate limiting elongated hole and a locking plate operation elongated hole are machined on the tube wall; the inner tube also includes a locking plate that can swing slightly around a fixed axis in its middle under the action of a torsion spring. The outer tube component also includes an L-shaped positioning post sliding groove and another locking plate limiting elongated hole corresponding to the inner tube component, machined on the tube wall.

[0068] By installing the inner tube or outer tube components onto various tool heads, operating handles, and extension tubes, they can be cascaded to form source rod operating tools for various purposes. The cascading operation of the quick-release connection mechanism is as follows: Align the positioning pin of the inner tube with the L-shaped groove of the outer tube, insert the inner tube along the groove, and rotate it 90 degrees after it is in place. At this point, the locking plate, under the action of spring force, will lock into the positioning elongated hole in the outer tube wall, reliably connecting the inner tube and outer tube into one unit, preventing any further relative axial or radial positional changes. To separate them, simply press the locking plate downwards at the large, elongated operating hole of the locking plate on the inner tube, causing the other end of the locking plate to disengage from the narrow, limiting hole in the locking plate on the outer tube wall. This allows the positioning pin of the inner tube to rotate 90 degrees in the opposite direction along the L-shaped groove of the outer tube, and then the inner tube can be pulled out to complete the separation operation.

[0069] A further technical solution of the present invention is that the fork assembly of the source bar fork also includes a fork plate with a special shape design. The groove width of the fork plate is smaller than the outer diameter of the source bar end plug head and slightly larger than the outer diameter of the end plug neck. The length of the groove is greater than twice the diameter of the end plug head. The end of the fork plate is machined into an upwardly rolled edge shape with a certain curvature. The above design ensures that the fork plate is not easily dropped during the transportation and placement of the source bar after it is picked up. It can also be used to change the posture of the source bar. It and the source bar clamp are backup devices for each other.

[0070] A further technical solution of the present invention is that the clamping component of the source rod clamp also includes a pair of annular chucks, the inside of which is machined with special bosses to constrain the source rod.

[0071] The operation of the source rod clamp is as follows: gripping the trigger opens the clamp head; releasing the trigger closes the clamp head. The closed clamp head encloses the end plug of the radiation rod, leaving a certain amount of clearance, allowing the source rod to move freely but not escape the clamp's control, thus achieving the purpose of manipulating the source rod. Furthermore, due to the special shape design of the closed clamp head, it combines the characteristics of both a clamp and a hook. The end plug of the radiation source rod does not exert a torque in the opening direction on the closed clamp head. This feature enables the source rod clamp to reliably handle large-mass, novel source rods. The source rod clamp can be used to handle single source rods on source loading / unloading workbenches or source racks. It can also be used to change the orientation of the source rod at the bottom of the source well, changing the source rod from a horizontal or inclined state to a vertical state for subsequent operations. It and the source rod fork are complementary backup devices.

[0072] A further technical solution of the present invention is that the power supply slide rail device also includes a C-shaped fixing tube. The slide rail clamp component is installed on the C-shaped fixing tube by bolt clamps, and its position can be changed within the length range of the C-shaped fixing tube. The power supply slide rail is fixed to the edge of the manhole cover by a pair of slide rail clamp components. By adjusting the distance between the two slide rail clamps, it can adapt to manhole covers of different sizes without having to manufacture multiple sets of power supply slide rails to match the manhole cover size.

[0073] The power supply slide rail equipment also includes a rocker assembly, which mainly consists of a wheel frame, a rope wheel, a rocker handle, and other components. The rope wheel has two rope grooves machined on it, and a traction steel wire rope is wound inside each rope groove. The winding directions of the steel wire ropes in the rope grooves are opposite to each other. The other ends of the two traction steel wire ropes finally meet at the universal hook located in the slide rail track through the guide wheel assembly and are connected and fixed thereto.

[0074] The operation of the source loading slide rail equipment is as follows: Before the source loading work begins, the slide rail is first installed under the source storage well cover, with one end close to the source rod preparation and pre-loading area and the other end close to the source rack area. After the source holding frame module pre-loaded in the loading area is picked up with a suitable long-handled tool, the ring handle of the long-handled tool is suspended on the universal hook of the source loading slide rail. Then, the crank handle of the rocker assembly is turned, and the source holding frame module, together with the long-handled tool, is conveyed to the side of the source rack under the pull of the traction steel wire rope. At this time, the long-handled tool is removed from the universal hook to continue the subsequent operation, and the source holding frame module is placed in the predetermined position on the source rack.

[0075] This invention also discloses a method for using an inverted source system for recycling waste industrial cobalt-60 source rods, which is carried out according to the following steps:

[0076] S01, Initial Preparations. First, remove a portion of the source well cover to expose the area to be operated below the source well, including the source rod preparation and pre-loading area and the source rack loading area; retain a portion of the cover for operator use and move it to a suitable position. Next, use nylon ropes to lower the source loading and unloading workbench from above the source rod preparation and pre-loading area of ​​the source well and suspend it on the well wall. Then, place the source holding frame rack below the source well, positioned between the source loading and unloading workbench and the cover. Install the source loading slide rail under the retained cover and secure it with the slide rail clamp component at the edge of the cover. Its position should cover the area to be operated near the source rack on the loading and unloading workbench. Then, begin assembling the long-handled operating tools. Different tools need to be assembled depending on the different stages of the source handling operation: the main tools used in the early and later stages include straight / curved hooks for operating the source rod storage basket; and locking plates for opening the top protective locking plate of the source rack. The length of the long-handled connector is assembled according to the actual operating depth, depending on the object being operated. All tool heads, connectors, and handles can be quickly assembled and disassembled. The main tools used in the mid-term include source rod forks, source rod shovels, magnifying glasses, and source rod clamps for operating the source rods and source frame modules. The assembled long-handled operating tools can be hung on the edge of the source well when not in use.

[0077] S02, Prepare the empty source module racks for loading. First, use a long-handled hook to hook the lifting ring on the top of the new source rod storage basket and transfer it from the storage position at the bottom of the source well to the basket storage area on the loading and unloading workbench. Then, use a locking plate pliers to open the protective locking plates at the top of the source rack module channels: align the locking plate pliers with the operating plate of the protective locking plate, and rotate it horizontally 90 degrees away from the center of the source rack. The module channel will then be opened. Repeat this operation to open all the protective locking plates on the source rack module channels.

[0078] Next, align the guide plate assembly of the module fixture with the slots on both sides of the source rack module channel and lower it along the slots. The screw of the fixture will automatically align with the thread of the middle hanger of the channel cover. Rotate the screw, and the top cover of the source rack module channel will engage with the module fixture, and the channel cover will be reliably picked up. Then remove it from the source rack. Hang the long-handled tool carrying the channel cover on the universal hook of the source loading slide rail. By operating the rocker handle of the source loading slide rail, the channel cover will be transferred to the source well source rod preparation pre-loading area. Remove the long-handled tool from the universal hook and continue to place the channel cover into the source frame tray slide of the source loading and unloading workbench or the source frame shelf. Rotate the long-handled tool in the opposite direction to detach the channel cover from the source frame module fixture and temporarily store it in the source frame tray. The empty source frame module fixture returns to the side of the source rack via the source loading slide rail. Repeat the above operation to remove the cover component from the next source rack module channel. This process was repeated multiple times until all the covers in the source rack module channel were removed.

[0079] The operation of removing the empty Shengyuan frame module from the storage compartment using the Shengyuan frame module fixture is the same as the method for picking up and placing the source rack module channel cover: First, align the two ends of the guide plate assembly of the module fixture with the slots on both sides of the source rack module channel and lower it along the slots. The screw of the fixture will automatically align with the thread of the hanging seat in the middle of the upper part of the Shengyuan frame module. Turn the screw, and the Shengyuan frame module and the module fixture will engage together, and the Shengyuan frame module will be reliably picked up. Then lift it out of the source rack. Hang the long-handled tool carrying the Shengyuan frame module on the universal hook of the source loading slide rail. By operating the rocker handle of the source loading slide rail, the Shengyuan frame module will be transferred to the source well source rod preparation and pre-loading area. Then remove the long-handled tool from the universal hook and continue to place the Shengyuan frame module into the source frame tray slide groove of the loading and unloading workbench or Shengyuan frame shelf. Turn the long-handled tool in the opposite direction to detach the Shengyuan frame module from the Shengyuan frame module fixture and temporarily store it in the source frame tray. The empty source frame module fixture returns to the source rack via the source loading slide rail. Repeat this process to remove the next source frame module. Repeat this cycle multiple times until the source frame tray slide on the loading / unloading workbench or source frame shelf is full.

[0080] S03, Install the new source bar into the source frame module. The installation of the new source bar into the source frame module can be performed using either a source bar fork or source bar clamps. These two tools serve similar purposes; however, in practice, if the object being operated on is a source bar in the source workbench, the source bar fork is preferred; if the object is a source bar in the source frame shelf, the source bar clamps are preferred.

[0081] Loading with a source bar fork: Select a suitable length of connecting tube and combine the source bar fork and handle into a long-handled operating tool. Align the fork slot with the neck of the source bar end plug in the source bar storage basket, adjust the height and move the slot forward towards the end plug until the end plug neck is completely inside the fork slot. Then lift it up slightly. Since the diameter of the source bar end plug is larger than the slot width, the source bar will be supported by the fork and suspended. Slightly shake the long-handled tool to ensure the source bar will not slip off the fork, then continue to lift the source bar until it is completely removed from the source bar storage basket. Move the source bar above the source frame module and find the corresponding channel according to the calculated position. Align the channel and lower the source bar until the bottom of the source bar contacts the bottom plate of the source frame. Move the source bar fork horizontally until the fork slot is completely away from the source bar, completing the source bar loading. Repeat the above operation to load other source bars until all the planned loading channel positions in the source frame module are filled with new source bars.

[0082] Loading with Source Rod Clamps: Select a suitable length of connecting tube to assemble the clamp body, clamp head, push rod assembly, and trigger assembly into a long-handled operating tool. Initially align the clamp head and bring it close to the source rod. Make slight up-and-down adjustments to the height so that the lower part of the clamp head contacts the upper surface of the source rod body. Grip the trigger; the two annular clamps open. Move the long-handled tool forward so that the source rod end plug in the source rod storage basket enters the center of the clamp opening. Release the trigger; the two annular clamps close. The closed clamps enclose the radiation rod end plug within them, leaving a certain amount of clearance. Lift it slightly; the source rod will be lifted into a suspended position. Slightly shake the long-handled tool to confirm that the source rod is reliably restrained by the clamps and will not fall out. Continue lifting the source rod until it is completely removed from the source rod storage basket. Move the source rod above the source frame module and locate the corresponding channel according to the calculated source placement position. Align the source rod with the channel and lower it until it contacts the base plate of the source frame. Grip the trigger to open the annular chuck, and simultaneously pull back the clamps to completely disengage the annular chuck from the source bar. Then release the trigger to complete the source bar loading. Repeat the above operation to load other source bars until all planned loading positions within the source frame module are filled with new source bars.

[0083] S04, Confirmation of New Source Bar Code. Loosen the bolts on the pipe clamp of the magnifying glass and initially install the magnifying glass onto the extension tube of the long-handled tool. Due to the difference in refractive index of the magnifying lens in water and air, the focal distance in water is generally several times that in air. The final position of the magnifying glass on the extension tube should be adjusted according to the observation effect in water. The source bar code is engraved on the top surface of the end cap. The distance between the source bar operating tool head and the magnifying glass is approximately 5 times the distance at which the lens can be clearly observed in air. Place the long-handled tool head (usually the source bar fork) with the magnifying glass against the upper surface of the source bar body, and observe the image in the magnifying glass through a telescope of appropriate magnification at the source wellhead to read the code of the source bar. Compare with the source allocation plan table, and fill in the record sheet after confirming that there are no errors. Usually, source bar identification and source bar loading are carried out simultaneously. Sometimes, all source bars in the storage basket are identified in advance, and then the source bars are loaded according to the order and position.

[0084] S05, Resetting the Source Frame Module: Module reset refers to using the source frame module fixture to place the source frame module with the source bar back onto the source rack. Align both ends of the guide plate assembly of the source frame module fixture with the source frame tray groove of the loading / unloading workbench or source frame shelf and lower it along the groove. The screw of the fixture will automatically align with the thread of the upper hanger of the source frame module. By rotating the screw, the source frame module engages with the module fixture, at which point the source frame module is reliably picked up. Then lift it away from the source frame tray groove. Hang the long-handled tool carrying the source frame module on the universal hook of the source loading slide rail. By operating the rocker handle of the source loading slide rail, the source frame module is transferred to the source rack area. Remove the long-handled tool from the universal hook. Lift the long-handled tool so that the bottom of the source frame module is higher than the crossbeam on the source rack. Note that this lifting operation should be performed under the monitoring of a dosimeter. The bottom of the source frame module should not significantly exceed the top of the source rack to avoid exceeding the radiation dose limit due to insufficient shielding water layer thickness. Following the source placement plan, use the long-handled tool to continue placing the source frame module into the predetermined module channel slot on the source rack until it contacts the bottom of the channel or the top of the previous source frame module within the channel. Then, rotate the long-handled tool in the opposite direction to detach the source frame module from the clamp and place it back onto the source rack. The empty source frame module clamp returns to the loading / unloading workbench or source frame shelf via the source loading rail. Repeat the above operation to remove the next source frame module from the loading / unloading workbench or source frame shelf. Repeat this process multiple times until all positions on the source rack are occupied.

[0085] To return the channel cover plate to the source rack using the ShengYuan frame module fixture: Align both ends of the guide plate assembly of the ShengYuan frame module fixture with the source frame tray groove of the loading / unloading workbench or ShengYuan frame shelf and lower it along the groove. The fixture screw will automatically align with the threaded upper hanger of the channel cover plate. By turning the screw, the channel cover plate hanger engages with the module fixture, and the channel cover plate is reliably picked up. Then lift it away from the source frame tray groove. Hang the long-handled tool carrying the channel cover plate on the universal hook of the loading slide rail. By operating the rocker handle of the loading slide rail, the channel cover plate can be transferred to the source rack area. Remove the long-handled tool from the universal hook and lift the long-handled tool so that the bottom of the channel cover plate is higher than the upper crossbeam of the source rack. Use the long-handled tool to continue placing the channel cover plate into the module channel groove on the source rack until it contacts the top of the uppermost ShengYuan frame module. Then turn the long-handled tool in the opposite direction to release the channel cover plate from the fixture and place it back on the source rack. The empty source frame module fixture returns to the source loading / unloading workbench or source frame shelf via the source loading slide rail. Repeat the above operation to remove the next channel cover plate in the source frame tray. Repeat the operation several times until the channel cover plate at the top of each channel on each source rack is installed in place. Visually confirm and record the results.

[0086] S06, Finishing Work. Use a locking pliers tool to close the protective locking plates on the source rack. Align the locking pliers with the operating plate of the protective locking plate and rotate it horizontally 90 degrees towards the center of the source rack; the module channel will then be closed. Repeat this operation to close all protective locking plates on the source rack module channel. After completion, have other personnel double-check using binoculars and record the findings. Check and confirm that all source-holding frames on the source loading / unloading workbench under the source storage well are empty and that no radioactive source rods remain. Check and confirm that the source-holding frame shelves and source rod storage baskets to be removed from the source storage well are free of any radioactive source rods. Use a long-handled hook tool to remove the new source rod storage baskets from the source well. Remove the source loading / unloading workbench from the source well. Disassemble and recover the source loading slide rails. Disassemble and recover all long-handled operating tools. Reinstall the removed source well cover.

[0087] Example: Figures 1-3 As shown, this embodiment provides a complete inverted source system equipment and layout for the reuse of waste industrial cobalt-60 source rods. It includes an integral long-handled source loading tool 1 and source rod clamps 2, which can be assembled to a suitable length and hung on the railing at the source well opening. The source loading and unloading workbench 3 is suspended on hooks on the source well wall; its underwater depth meets the shielding protection requirements and provides better visibility than operating directly at the bottom of the source well. The source rod storage and transportation basket 4 and the source holding frame shelf 5 are located at the bottom of the source well and can be repositioned according to the operational needs of the source rods or the holding frame. The source loading slide rail 8 is installed below the source well cover.

[0088] like Figure 4As shown, the source loading tool 1 includes a quick-detachable connecting mechanism 11, and the handle component includes a source frame module clamp 12, a source rod fork 13, a source rod shovel 14, a magnifying glass 15, a locking pliers 16, a straight hook 17 and a curved hook 18 for picking up the source rod basket, and a ring handle 19. These components can be quickly combined and separated through the quick-detachable connecting mechanism 11 to connect and separate various operating tool heads, long rods of different lengths, and the handle component.

[0089] like Figure 5 As shown, the quick-release connecting mechanism 11 consists of: a positioning post 112 on the inner tube 111 component; a locking plate limiting elongated hole 1110 and a locking plate operation long elongated hole 116 machined on the tube wall; a locking plate 113 inside the inner tube 111, which can swing slightly around the fixed shaft 115 in the middle under the action of a torsion spring 114; and an outer tube 118, which also includes an L-shaped positioning post sliding groove 119 machined on the tube wall and another locking plate limiting elongated hole 1110 corresponding to the inner tube component.

[0090] The operating principle of the quick-release connecting mechanism 11 is as follows: Align the positioning pin 112 of the inner tube 111 with the L-shaped groove 119 of the outer tube 118, insert the inner tube 111 along the groove, and rotate it 90 degrees after it is in place. At this time, the locking plate 113 can be locked in the limiting elongated hole 1110 of the outer tube 118 under the action of the spring force, so that the inner tube 111 and the outer tube 118 are reliably connected as one unit, and there will be no further relative axial and radial positional changes. When it is necessary to separate the two, simply press the locking plate 113 downward at the locking plate operation hole 116 of the inner tube 111, so that the other end of the locking plate 113 exits the limiting elongated hole 1110 of the outer tube 118. Then, rotate the positioning pin 112 of the inner tube 111 90 degrees in the opposite direction along the L-shaped groove 119 of the outer tube 118, and pull out the inner tube 111 to complete the separation operation. The aforementioned quick-assembly and detachable inner tube component or outer tube component can be installed on various tool heads, operating handles, and extension tubes to achieve cascading and connection to form source rod operating tools for various purposes.

[0091] like Figure 6 As shown, the Shengyuan frame module fixture 12 includes an outer tube component 118, a guide assembly 121, and an escapement device 122. The escapement device is connected to the lower end of the outer tube component by a rivet 123, and its internal screw 1221 can rotate freely. The outer tube component 118 of the Shengyuan frame module fixture can be extended through an extension tube 1111 with an inner tube component 111 (e.g., Figure 5 As shown, the assembly consists of a suitable operating tool.

[0092] The operating principle of the source frame module fixture 12 is as follows: The guide assembly 121 is located on both sides of the escapement device 122 and is a thin-walled profiled sheet processing part. Relying on its shape, it can move in the source frame 9 ( Figure 1 ) or on the loading / unloading source workbench 3 ( Figure 1 Accurately position the Shengyuan frame module 7 ( Figure 1 After the Shengyuan frame module 7 is accurately positioned, the upper end of the module is firmly screwed together with the screw 1221 by rotating the screw 1221. At this time, the Shengyuan frame module 7 is reliably picked up and transferred to the predetermined position. After that, rotating the screw 1221 in the opposite direction can make the source frame module clamp 12 disengage from the Shengyuan frame module 7.

[0093] like Figure 7 As shown, the source rod fork 13 includes an outer sleeve component 118, a fork body assembly 131, and a specially shaped fork plate 1311; Reference Figure 8 The source bar shovel 14 includes an outer sleeve component 118 and a shovel body assembly 141; Reference Figure 9 The magnifying glass 15 includes a pipe clamp assembly 151 and a lens clamping plate 152. The source rod shovel 14 can scoop up one or more source rods scattered at the bottom of the source well and transfer them to a suitable area.

[0094] The working principle of the source rod fork 13 is as follows: the slot width of its fork plate 1311 is smaller than the outer diameter of the end plug head 61 of the source rod 6, and slightly larger than the outer diameter of the end plug neck 62. The length of the slot is greater than twice the diameter of the end plug head 61. The end of the fork plate is machined into an upwardly rolled edge shape with a certain curvature. The above design ensures that the fork plate is not easily dropped during the transportation and placement of the source rod after it is picked up. It can also be used to change the posture of the source rod. It and the source rod clamp 2 are backup devices. The source rod fork 13 can pick up independent source rods scattered at the bottom of the source storage well, and can also pick up and place individual source rods on the source rack or the source loading and unloading workbench.

[0095] The source rod shovel 14 is designed to scoop up one or more source rods scattered at the bottom of the source storage well and transfer them to a suitable area.

[0096] The method of using the magnifying glass 15 is as follows: Loosen the bolts on its tube clamp component 151 to initially install the magnifying glass onto the extension tube 1111 of the long-handled tool. Because the refractive index of the magnifying lens differs in water and air, the focal point distance in water is generally several times that in air. The final position of the magnifying glass on the extension tube 1111 should be adjusted according to underwater observation. The code of the source rod 6 is engraved on the top surface of the end plug 61. The distance between the source rod operating tool head and the magnifying glass is approximately five times the distance at which the lens can be clearly observed in air. After the lens assembly is properly adjusted to the appropriate position on the long-handled tube, the engraved code on the top of the source rod can be read while operating the source rod. When the lens fails due to irradiation discoloration or is damaged and needs to be replaced, the bolts on the lens clamp plate 152 can be loosened to install a new lens.

[0097] like Figure 3 as well as Figure 10 As shown, the source rod clamp 2 includes an extension tube 26, a threaded sleeve 28, a threaded tube 27, a clamp body 23, and a clamp head that also includes a pair of annular chucks 21 and 22. The chucks have internally machined bosses to constrain the source rod. A push rod assembly 29 and a trigger assembly are also included. The clamp head and the front end of the clamp body are connected by screws, allowing for the use of different shaped clamp heads to match different source rods. The rear end of the clamp body is connected to the extension tube, the extension tube itself, and the trigger to the required length via threaded sleeves and threaded tubes. A push rod assembly 29 of the corresponding length is installed inside the extension tube.

[0098] The operation of the source rod clamp is as follows: Grip the trigger 210, the clamp heads 21 and 22 open; release the trigger, and the clamp heads 21 and 22 close. The closed clamps enclose the end plug 61 of the radiation rod 6, leaving a certain gap, allowing the source rod to move freely without escaping the clamp's control, thus achieving the purpose of manipulating the source rod. Furthermore, due to the special shape design of the closed clamps 21 and 22, they possess the dual characteristics of a clamp and a hook. The end plug of the radiation source rod does not exert a torque in the opening direction on the closed clamps; this feature enables the source rod clamp to reliably operate large-mass new source rods. The source rod clamp can be used to handle single source rods on the source loading / unloading workbench 3 or source rack 9. It can also be used to change the orientation of the source rod at the bottom of the source well, changing it from a horizontal or inclined state to a vertical state for subsequent operations. The source rod clamp and the source rod fork are mutually redundant devices.

[0099] like Figure 11As shown, the power supply slide rail 8 includes a track component 82, a slide rail clamp 83, a guide wheel assembly 81, and a universal hook 86. A C-shaped fixing pipe 822 is welded above the track component 821. The slide rail clamp 83 is mounted on the C-shaped fixing pipe via bolt clamps 831, and its position can be changed within the length of the C-shaped fixing pipe. By relying on pairs of slide rail clamp components to fix the power supply slide rail at the edge of the manhole cover, the distance between the two slide rail clamps can be adjusted to accommodate manhole covers of different sizes without the need to manufacture multiple sets of power supply slide rails to match the manhole cover size. The riser of the power supply fixture is equipped with a rocker assembly 85. The rocker assembly mainly consists of a wheel frame 851, a rope wheel 853, a rocker handle 852, and other components. The rope wheel has two rope grooves machined on it. A traction steel wire rope 854 is wound inside each rope groove. The winding directions of the steel wire ropes in the rope grooves are opposite to each other. The other ends of the two traction steel wire ropes finally meet through the guide wheel assembly 81 and are connected and fixed to the universal hook 86 located in the track 821 of the track component.

[0100] The method of using the source loading slide rail 8 is as follows: Before the source transfer work begins, first install the source loading slide rail under the source storage well cover, with one end close to the source rod preparation and pre-loading area and the other end close to the source rack area. After the source holding frame module 7 pre-loaded in the loading area is picked up with the matching long-handled tool 1, suspend the ring handle of the long-handled tool on the universal hook 86 of the source loading slide rail, and then turn the crank handle 852 of the rocker wheel assembly 85. The source holding frame module 7, together with the long-handled tool 1, will be transferred to the side of the source rack under the pull of the traction wire rope 854. At this time, remove the long-handled tool 1 from the universal hook 86 and continue the subsequent operation, placing the source holding frame module 7 into the predetermined position of the source rack 9. In this way, the source holding frame module 7 or the source rod storage and transportation basket 4 can be transported back and forth between the source rod preparation and pre-loading area and the target source rack area, which can greatly reduce the labor intensity of the operators compared with the previous pure manual foot transport.

[0101] like Figure 12 As shown, the loading and unloading source workbench 3 includes an upper frame 31, a lower frame 32, a source frame tray 33, a hanging frame 34, and a basket tray 35. Multiple sets of source frame trays are installed in the area of ​​the loading and unloading source workbench near the well wall, and the source frame module 7 can be placed in the groove of the source frame tray; multiple sets of basket trays are installed in the area of ​​the loading and unloading source workbench away from the well wall, and the source rod storage and transportation basket 4 can be placed on the basket tray.

[0102] How to use the loading and unloading source workbench 3: When it is necessary to transfer the source, first install it on the hook on the source well wall. The position of the hook should ensure that the water layer thickness above the loading and unloading source workbench meets the shielding protection requirements. Use the long-handled tool 1 to transfer the source holding frame module 7 and the source rod storage and transportation basket 4 from the bottom of the source well or the source rack 9 to the appropriate area of ​​the loading and unloading source workbench. Use the source rod fork 13 or source rod clamp 2 to complete the pre-filling of the source rod 6 from the storage and transportation basket 7 to the source holding frame module 7. Because its operating distance is shorter and the visual conditions are better than operating directly at the bottom of the source well, and multiple source rod baskets can be processed in batches, the operation is more convenient and efficient.

[0103] like Figures 13-15 As shown, the source frame shelf 5 includes a channel-shaped plate component 51, a reinforcing rib plate 52, and a base 53. The source frame shelf is placed at the bottom of the source well for temporary or long-term storage of empty source frame modules or source rod source frame modules with extremely low activity that are no longer usable. During source turnover, it can serve as a temporary storage location for source frame modules 7.

[0104] The present invention discloses a method for using a flip-chip source system for recycling waste industrial cobalt-60 source rods, which is carried out according to the following steps:

[0105] S01, Initial Preparations:

[0106] a. Remove unnecessary source well covers to expose the underwater areas of the initial source well that require operation, including the active rod preparation and pre-filling area and the source rack loading area; retain one or more well covers for operator use and move them to suitable locations.

[0107] b. Use a nylon soft rope to slowly lower the loading and unloading workbench 3 from above the source well and source bar preparation and pre-filling area into the source well and suspend it at an appropriate height on the well wall.

[0108] c. Use a nylon soft rope to lower the source frame 5 into the source well, positioning it in the area between the loading / unloading workbench 3 and the well cover.

[0109] d. Install the source loading slide rail 8 under the retained manhole cover and fix it to the edge of the manhole cover with the slide rail clamp 83. After installation, one end of the track component 82 is above the side of the source loading and unloading workbench 3, and the other end is directly above the location of the source rack 9.

[0110] e. Assemble the long-handled operating tool 1. Different tools need to be assembled depending on the different stages of the source-reversing operation:

[0111] The main tools used in the early and later stages include straight hooks 17 and curved hooks 18 for operating the source rod storage and transportation basket 4; and locking plates pliers 16 for opening the top protective locking plate of the source rack 9. The length of the long-handled connector is assembled according to the actual operating depth, depending on the object being operated.

[0112] All tool heads, extension tubes 1111, and ring handles 19 can be quickly disassembled and assembled. The main tools used in the mid-term are the source rod fork 13, source rod shovel 14, magnifying glass 15, and source rod clamp 2 for operating the source rod 6 and the source frame module 7. The assembled long-handled operating tools can be hung on the edge of the source well when not in use.

[0113] S02, ShengYuan frame module 7 is ready to be installed in the empty warehouse:

[0114] a. Use a long-handled curved hook 18 tool to hook the lifting ring on the upper part of the new source rod storage and transportation basket 4 and transfer it from the storage position at the bottom of the source well to the basket storage area on the loading and unloading source workbench 3.

[0115] b. Use the locking pliers 16 to open the protective locking plate 91 at the top of the source rack 9 module channel: Align the locking pliers with the operating plate of the protective locking plate 91, and rotate it horizontally 90 degrees away from the center of the source rack. The module channel will then be opened. Repeat this operation to open all the protective locking plates on the source rack module channel.

[0116] c. Use the source frame module fixture 12 to remove the source frame 9 channel cover plate 92:

[0117] 1) Align the two ends of the guide plate assembly 121 of the module fixture 12 with the grooves on both sides of the source frame module channel, and lower it along the grooves. The screw 1221 of the fixture escapement device can automatically align with the thread of the middle hanger 921 of the channel cover plate.

[0118] 2) By rotating the screw 1221, the channel cover plate is engaged with the module clamp 12, at which point the channel cover plate is reliably picked up.

[0119] 3) Then lift it out of the source rack module channel slide.

[0120] 4) Next to the source rack, hang the long-handled tool carrying the channel cover on the universal hook 86 of the source loading slide rail 8. By operating the rocker handle 852 of the source loading slide rail, the channel cover is transferred to the source well and source rod preparation pre-loading area under the traction of the wire rope 854. Remove the long-handled tool from the universal hook.

[0121] 5) Use the long-handled tool to continue placing the channel cover into the source frame tray groove of the loading and unloading workbench 3 or the source frame shelf 5. Rotate the long-handled tool in the opposite direction to make the channel cover detach from the source frame module clamp 12 and temporarily store it in the source frame tray.

[0122] 6) The empty source frame module fixture 12 returns to the side of the source rack 9 via the source loading slide rail 8.

[0123] 7) Repeat the above operation to remove the cover plate component in the next source rack module channel.

[0124] 8) After multiple cycles of operation, all the covers in the source rack module channel are removed to prepare for subsequent source installation.

[0125] d. Use the ShengYuan frame module fixture to remove the empty ShengYuan frame module from the compartment:

[0126] 1) Align the two ends of the guide plate assembly 121 of the module fixture 12 with the grooves on both sides of the source frame module channel, and lower it along the groove. The screw 1221 of the fixture escape device 122 can automatically align with the thread of the upper hanging seat 71 of the source frame module 7.

[0127] 2) By rotating the screw 1221, the Shengyuan frame module 7 is engaged with the module clamp 12, at which point the Shengyuan frame module 7 is reliably picked up.

[0128] 3) Then lift it out of the source frame module channel chute. Note that the lifting operation should be carried out under the monitoring of the dosimeter. The bottom of the source frame module 7 should not exceed the top of the source frame 9 to avoid exceeding the radiation dose standard.

[0129] 4) Next, hang the long-handled tool 1 carrying the source frame module 7 on the universal hook 86 of the source loading slide rail 8 next to the source rack 9. By operating the rocker handle 852 of the source loading slide rail 8, the source frame module 7 is transferred to the source well and source rod preparation pre-loading area under the traction of the wire rope 854. Remove the long-handled tool 1 from the universal hook 86.

[0130] 5) Using the long-handled tool 1, continue to place the source frame module 7 into the source frame tray 33 groove of the loading and unloading workbench 3 or the source frame shelf 5. Rotate the long-handled tool in the opposite direction to allow the source frame module 7 to be removed from the source frame module clamp 12 and temporarily stored in the source frame tray 33.

[0131] 6) The empty source frame module fixture 12 returns to the side of the source rack 9 via the source loading slide rail 8.

[0132] 7) Repeat the above operation to retrieve the source frame module 7 in the next source frame module channel.

[0133] 8) After multiple cycles of operation, the source frame tray slide grooves on the loading and unloading source workbench 3 or the source frame shelf 5 are filled with source frame modules 7, preparing for subsequent source loading.

[0134] S03, Install the new source stick into the source frame module:

[0135] The installation of the new source rod 6 to the source frame module 7 can be performed using either the source rod fork 13 or the source rod clamp 2. These two tools serve similar purposes and can be used as backups for each other. In actual operation, if the object being operated on is the source rod in the source workbench 3, the source rod fork 13 is preferred; if the object is the source rod in the source frame shelf 5, the source rod clamp 2 is preferred.

[0136] a. Load using Source Bar Fork 13:

[0137] 1) Select a suitable length of connecting pipe to assemble the source rod fork 13 and the ring handle 19 into a long handle operating tool.

[0138] 2) Align the groove of the fork plate 1311 of the source rod fork with the neck of the end plug of the source rod 6 in the source rod storage and transportation basket 4, adjust the height and move the groove forward toward the end plug, so that the neck of the end plug is completely inside the groove of the fork plate.

[0139] 3) Next, lift it up a short distance. Since the diameter of the end plug of the source rod 6 is greater than the width of the slot, the source rod will be lifted by the fork plate 1311 and suspended.

[0140] 4) Gently shake the long-handled tool 1 to confirm that the source rod 6 will not slip off the fork plate 1311, then continue to raise the height of the source rod 6 until it is completely removed from the source rod storage basket 4.

[0141] 5) Move the source rod 6 above the source frame module 7 and locate the corresponding channel according to the calculated position. Align the source rod 6 with the channel and slowly lower it until the bottom of the source rod 6 contacts the bottom plate of the source frame 7.

[0142] 6) Move the source bar fork 13 horizontally so that the slot of the fork plate 1311 is completely away from the source bar 6, thus completing the loading of the source bar.

[0143] 7) Repeat the above steps to continue loading other source bars. Continue until all planned channel positions within the source frame module 7 are filled with new source bars.

[0144] b. Load using source rod clamp 2:

[0145] 1) Select an extension tube of suitable length 26 to assemble the clamp body 23, chucks 21 and 22, push rod assembly 29, and grip trigger 210 into a long-handled operating tool.

[0146] 2) Align the chucks slightly and bring them close to the source rod 6. Make small adjustments to the height so that the lower parts of the chucks 21 and 22 contact the upper surface of the source rod body.

[0147] 3) Operate the grip trigger 210, the two chucks 21 and 22 open, move the long handle tool 2 forward, so that the source rod 6 end plug in the source rod storage basket 4 enters the middle of the opening of the chuck.

[0148] 4) Slowly release the grip of trigger 210, and the two clamps will close. The closed clamps will enclose the end plug of the radiation rod 6 within them, while leaving a certain amount of clearance.

[0149] 5) Next, lift it up a short distance, at which point the source rod 6 will be lifted into a suspended position.

[0150] 6) Gently shake the long-handled tool 2 to confirm that the source rod is reliably restrained by the chucks 21 and 22 and will not fall off. Then continue to raise the height of the source rod 6 until it is completely removed from the source rod storage basket 4.

[0151] 7) Move the source rod 6 above the source frame module 7 and locate the corresponding channel according to the calculated position. Align the source rod with the channel and slowly lower it until the bottom of the source rod 6 touches the bottom plate of the source frame.

[0152] 8) Operate the trigger 210 to open the chucks 21 and 22. At the same time, pull back the clamps to completely separate the annular chuck opening from the source bar before releasing the trigger. This completes the loading of the source bar.

[0153] 9) Repeat the above steps to continue loading other source bars 6. Continue until all planned loading positions within the source frame module 7 are filled with new source bars.

[0154] S04, Confirmation of New Source Stick 6 Encoding:

[0155] a. Loosen the bolts on the upper tube clamp of the magnifying glass and initially install the magnifying glass onto the extension tube 1111 of the long-handled tool.

[0156] b. Due to the different refractive indices of the magnifying lens 15 in water and air, the focal distance in water is generally several times that in air.

[0157] The final position of the magnifying glass 15 on the extension tube 1111 should be adjusted for underwater observation. The source rod's code is engraved on the top surface of the end cap. The distance between the source rod operating tool head and the magnifying glass is approximately five times the distance at which the lens can be clearly observed in air.

[0158] c. Place the long-handled tool head (usually the source rod fork 13) equipped with a magnifying glass on the upper surface of the source rod body, and observe the image in the magnifying glass through a telescope with appropriate magnification at the source wellhead to read the code of the source rod.

[0159] d. Compare the identified codes with the source sourcing plan table, and fill in the record after confirming that they are correct.

[0160] e. Normally, source bar identification and source bar loading are performed simultaneously. Sometimes, all source bars 6 in the storage and transportation basket 4 are identified in advance, and then the source bars are loaded according to their order and position.

[0161] S05, Reset of Shengyuan Module 7:

[0162] 1) Use the source frame module fixture 12 to place the source frame module 7 with source 6 back onto the source frame 9:

[0163] 2) Align the two ends of the guide component 121 of the Shengyuan frame module fixture with the source frame tray slide grooves 33 and 51 of the loading and unloading workbench 3 or the Shengyuan frame shelf 5, and lower it along the groove. The screw 1221 of the fixture escapement device can then automatically align with the thread of the upper hanging seat of the Shengyuan frame module 7.

[0164] 3) By rotating the screw 1221, the source frame module 7 is engaged with the module clamp 12, at which point the source frame module 7 is reliably picked up. Then it is lifted out of the source frame tray slide.

[0165] 4) Hang the long-handled tool 1 carrying the source frame module 7 on the universal hook 86 of the source mounting slide rail 8. By operating the rocker handle 852 of the source mounting slide rail 8, the source frame module 7 is transferred to the source rack 9 area under the traction of the wire rope 854. After it is in place, remove the long-handled tool 1 from the universal hook 86.

[0166] 5) Lift the long-handled tool 1 so that the bottom of the source frame module 7 is higher than the upper crossbeam of the source frame 9. Note that the lifting operation should be carried out under the monitoring of the dosimeter. The bottom of the source frame module should not be significantly higher than the top of the source frame to avoid exceeding the radiation dose limit.

[0167] 6) According to the source arrangement plan, use the long-handled tool 1 to continue placing the source frame module 7 into the predetermined module channel groove on the source rack, and slowly lower it until it touches the bottom of the channel or the top of the previous source frame module 7 in the channel. At this time, rotate the long-handled tool 1 in the opposite direction to allow the source frame module to be removed from the source frame module clamp 12 and placed back on the source rack.

[0168] 7) The empty source frame module fixture 12 returns to the source loading / unloading workbench 3 or source frame shelf 5 via the source loading slide rail 8.

[0169] 8) Repeat the above operation to remove the next source loading / unloading workbench 3 or source frame shelf 5 source frame module 7.

[0170] 9) Repeat the operation multiple times until all the positions of the source frame modules on the source rack are occupied.

[0171] After reinstalling the source module 7, the channel covers should be placed on top of the uppermost source module in all module channels of the source rack 9 to prevent the source rod from accidentally falling off. The steps are as follows:

[0172] 1) Align the two ends of the guide component 121 of the Shengyuan frame module fixture 12 with the source frame tray slide groove of the loading and unloading workbench 3 or the Shengyuan frame shelf 5, and lower it along the groove. The screw 1221 of the fixture escapement device can automatically align with the thread of the upper hanging seat of the passage cover plate.

[0173] 2) By rotating screw 1221, the channel cover plate engages with module clamp 12, at which point the channel cover plate is reliably picked up. Then it is lifted away from the source frame tray chute.

[0174] 3) Hang the long-handled tool 1 carrying the channel cover on the universal hook 86 of the source mounting slide rail 8. By operating the rocker handle 852 of the source mounting slide rail, the channel cover is transferred to the source rack 9 area under the traction of the wire rope 854. Remove the long-handled tool 1 from the universal hook 86.

[0175] 4) Lift the long-handled tool 1 so that the bottom of the channel cover plate is higher than the crossbeam of the source frame 9.

[0176] 5) Using the long-handled tool 1, continue to place the channel cover into the module channel slide on the source rack, and slowly lower it until it touches the top of the uppermost source frame module 7. At this point, rotate the long-handled tool 1 in the opposite direction to disengage the channel cover from the source frame module clamp 12 and place it back onto the source rack 9.

[0177] 6) The empty source frame module fixture 12 returns to the source loading / unloading workbench 3 or source frame shelf 5 via the source loading slide rail 8.

[0178] 7) Repeat the above steps to remove the next channel cover plate in the source frame tray.

[0179] 8) Repeat the operation multiple times until the top channel cover of each source rack channel is installed in place.

[0180] S06, Finishing touches:

[0181] 1) Use locking pliers 16 to close the protective locking plates at the top of the source rack 9 module channel: Align the locking pliers with the operating plate of the protective locking plate, and rotate them horizontally 90 degrees toward the center of the source rack. The module channel will then be closed. Repeat this operation to close all the protective locking plates on the source rack module channel. After completion, have another person use binoculars to double-check.

[0182] 2) Check and confirm that all source-holding frames 7 on the source loading and unloading workbench 3 in the source storage well have been emptied and no radioactive source rods 6 have been left behind.

[0183] 3) Check and confirm that there are no radioactive source rods 6 left behind in the source storage frame 5 and source rod storage and transportation basket 4 that need to be removed from the source storage well.

[0184] 4) Remove the loading and unloading source workbench 3 from the source well.

[0185] 5) Remove the source frame shelf 5 from the source well.

[0186] 6) Use long-handled hook tool 1 to remove the new source rod storage and transportation basket 4 from the source well (leave the source rods down the well if temporary storage is required).

[0187] 7) Disassemble and recycle the source slide rail 8.

[0188] 8) Dismantle and recycle various long-handled operating tools 1 and 2.

[0189] 9) Reinstall the removed source well cover.

[0190] In summary, the inverted source loading system for waste industrial cobalt-60 recycling source rods of the present invention effectively solves the problem that existing source rod inversion systems cannot reliably and flexibly operate waste industrial cobalt-60 recycling source rods. It shortens the inversion time, reduces the labor intensity of operators, improves work efficiency, and reduces safety risks for operators. Furthermore, some of the equipment provided by this system, such as the source loading slide rail, source rod fork plate, and annular source rod clamp for picking up and straightening the source rod, can be directly used to improve existing source rod inversion equipment for other types of source rods, significantly improving the efficiency and safety of similar inversion work.

[0191] The inverted source usage method for the waste industrial cobalt-60 recycling source rod of the present invention can stably and efficiently complete all operational requirements of the new cobalt-60 recycling source rod, making the recycling of waste industrial cobalt-60 radioactive sources a reality, thereby minimizing the difficulty and cost of radioactive waste disposal. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A flip-chip source system for recycling waste industrial cobalt-60 source rods, characterized in that: It includes a detachable connecting mechanism, a handle assembly, a source rod basket, source rod clamps, a source loading and unloading workbench, a source loading slide rail, and a source holding frame shelf; the handle assembly includes at least one of the following: a source holding frame module clamp, a source rod fork, a source rod shovel, a magnifying glass, locking pliers, a straight hook, and a curved hook. The detachable connecting mechanism includes an inner tube component, a spring locking device, and an outer tube component. The connecting mechanism uses a spring-loaded locking plate to connect and separate long rods of different lengths from the handle component and / or the source rod clamp. The Shengyuan frame module fixture includes a guide assembly and an escapement device. The Shengyuan frame module fixture is fitted with the long rod connector of the corresponding length through the spring-loaded locking plate and positioning post of the outer tube component. The guide assembly is located on both sides of the escapement device. The guide assembly is a thin-walled profiled sheet machining part, and its shape is configured to accurately position the Shengyuan frame module. The escapement device is connected to the lower end of the outer tube component by rivets, and its internal screw can rotate freely. The source rod fork includes a fork body assembly; the source rod fork is fitted with the long rod connector of the corresponding length via a spring-loaded locking plate and positioning post of the outer sleeve component; the fork body at the end of the source rod fork is used to pick up individual source rods scattered at the bottom of the source storage well, and / or to pick up and place individual source rods on the source rack or loading and unloading workbench; while picking up and placing the source rods, the attitude straightening operation of the source rods is completed; The source rod shovel includes a shovel body assembly, which is fitted with the long rod connector of the corresponding length via a spring-loaded locking plate and positioning post of the outer sleeve component. The shovel body assembly is connected to the lower end of the outer sleeve component by rivets and is used to scoop up one or more source rods scattered at the bottom of the source well and transfer them to a suitable area. The magnifying glass includes a tube clamp assembly and a lens assembly. The tube clamp assembly is used to fix the lens assembly to the front of the long rod tube and read the engraved code on the top of the source rod while operating the source rod. The locking plate clamp includes a clamp body plate. The locking plate clamp is fitted with the long rod connector of the corresponding length through the spring-loaded locking plate buckle and positioning post of the outer tube component. The clamp body plate is connected to the lower end of the outer tube component by rivets and is used to open or close the protective locking plate of the source frame by rotating the clamp body plate. The straight hook and / or curved hook are fitted to the corresponding length of long rod connector via the spring-loaded locking plate and positioning post of the outer tube component. The straight hook or curved hook is connected to the lower end of the outer tube component by rivets and is used to operate the source rod basket or underwater rope. The source rod clamp includes an extension tube, a threaded sleeve, a threaded tube, a clamp body, a clamp head, a push rod assembly, and a trigger assembly; wherein the clamp head and the front end of the clamp body are connected by screws, and the clamp head has an annular chuck; the rear end of the clamp body is connected to the extension tube, the multiple extension tubes are connected to each other, and the extension tubes are connected to the trigger assembly by threaded sleeves and threaded tubes to form the required length, and push rod assemblies of corresponding lengths are installed inside the multiple extension tubes; The loading and unloading source workbench includes a source frame tray, upper and lower frames, a hanging frame, and a basket tray, which are installed on hooks on the source well wall to realize the pre-filling of the source rod from the storage basket to the source frame module on the loading and unloading source workbench. The loading slide rail includes a track component, a slide rail clamp, a guide wheel assembly, and a universal hook, so that the loading slide rail is installed under the source well cover during loading, and the universal hook is used to pull the source frame module or source rod basket to transport back and forth between the source rod preparation and pre-filling area and the target source frame area. The source-generating frame includes a channel plate component, a base, and reinforcing ribs, and is used to place the source-generating frame module or source rod source-generating frame module with extremely low activity that is no longer of use at the bottom of the source well for temporary or long-term storage.

2. The inverted source system for the recycling source rod of waste industrial cobalt 60 as described in claim 1, characterized in that: The detachable connecting mechanism also includes a positioning post on the inner tube component, and a locking plate limiting elongated hole and a locking plate operation elongated hole on the tube wall; the inner tube also includes a locking plate, which is used to swing slightly around a fixed axis in its middle under the action of a torsion spring; the outer tube component also includes an L-shaped positioning post sliding groove on the tube wall and another locking plate limiting elongated hole corresponding to the inner tube component, so as to install the inner tube component or the outer tube component on the handle component, the source rod clamp and / or the long rod connector respectively.

3. The inverted source system for the recycling source rod of waste industrial cobalt 60 as described in claim 1, characterized in that: The fork assembly of the source bar fork also includes a fork plate. The groove width of the fork plate is smaller than the outer diameter of the source bar end plug head and larger than the outer diameter of the end plug neck. The length of the groove is greater than twice the diameter of the end plug head. The end of the fork plate has an arc-shaped upper rolled edge.

4. The inverted source system for the recycling source rod of waste industrial cobalt 60 as described in claim 1, characterized in that: The source rod clamp has a pair of annular clamps, and the inside of the clamps has protrusions for restraining the source rod.

5. The inverted source system for the recycling source rod of waste industrial cobalt 60 as described in claim 1, characterized in that: The loading slide rail also includes a C-shaped fixing tube. The loading slide rail includes two slide rail clamps, which are mounted on the C-shaped fixing tube by bolt clamps. The position of the slide rail clamps is configured to be adjustable within the length of the C-shaped fixing tube to accommodate manhole covers of different sizes by adjusting the spacing between the two slide rail clamps. The loading slide rail also includes a rocker assembly, which includes a wheel frame, a rope wheel, and a rocker handle. The rope wheel has two rope grooves, and a traction steel wire rope is wound inside each of the rope grooves. The two traction steel wire ropes are wound in opposite directions in the rope grooves. The other ends of the two traction steel wire ropes are joined and fixed to a universal hook located in the slide rail track by a guide wheel assembly.

6. A method for operating an inverted source system for recycling waste industrial cobalt-60 source rods, characterized in that, The method is operated based on the inverted source system of the waste industrial cobalt 60 recycling source rod as described in any one of claims 1-5, and the method includes: S01, Initial preparation work: Remove part of the source well cover, keep part for the operator to use and move it to a suitable position. Use nylon rope to put the loading and unloading workbench into the source well from above the source bar preparation and pre-filling area and suspend it on the well wall. Install the source loading slide rail under the reserved well cover and fix it with the edge of the well cover using the slide rail clamp component. Assemble the long-handled operating tool. The assembly of the long-handled operating tool includes: aligning the positioning post of the inner tube of the detachable connecting mechanism with the L-shaped groove of the outer tube, inserting the inner tube along the groove, and rotating it 90 degrees after it is in place so that the inner tube and the outer tube are reliably connected as one. S02, Prepare empty source frame modules for loading: Use a long-handled hook tool to hook the lifting ring on the upper part of the source rod basket and transfer it from the storage position at the bottom of the source well to the basket storage area on the source loading and unloading workbench; Use a locking plate pliers tool to open the protective locking plate on the top of the source rack module channel, align the locking plate pliers and lock them on the operating plate of the protective locking plate, rotate them horizontally 90 degrees away from the center of the source rack, and the module channel will be opened. Repeat this operation to open all the protective locking plates on the source rack module channel; Use the source frame module fixture to pick up all the source rack module channel cover plates and place them in the predetermined position on the source loading and unloading workbench or source frame shelf through the source loading slide rail. Repeat this operation multiple times until all the cover plates on the source rack module channel are removed and placed properly; Use the source frame module fixture to pick up the source frame modules that need to be inverted in the source rack and place them in the predetermined position on the source loading and unloading workbench or source frame shelf through the source loading slide rail. Repeat this operation multiple times until all positions are filled with source frames. S03, Installing the new source bar into the source bar frame module: This includes loading using a source bar fork and loading using source bar clamps. The loading process using the source rod fork involves selecting a suitable length of tubing, assembling the source rod fork and handle into a long-handled operating tool, aligning the fork slot with the neck of the source rod end plug in the source rod basket, adjusting the height and moving the slot forward towards the end plug until the end plug neck is fully inside the fork slot, and ensuring the source rod will not slip off the fork. Then, raise the source rod until it is completely removed from the source rod basket. Move the source rod to the corresponding channel above the source frame module, align it with the channel, and lower the source rod until its bottom contacts the bottom plate of the source frame. Move the source rod fork horizontally until the fork slot is completely away from the source rod, thus completing the source rod loading. Repeat the above operations to load other source rods until all planned loading channels within the source frame module are filled with new source rods. The loading process using the source rod clamp includes: selecting a suitable length of connecting tube to assemble the clamp body, clamp head, push rod assembly, and trigger assembly into a long-handled operating tool; initially aligning the clamp head with the source rod and bringing it close to the source rod; adjusting the height so that the lower part of the clamp head contacts the upper surface of the source rod body; operating the trigger to open the clamp head so that the source rod end plug in the source rod basket enters the middle of the clamp opening; operating the trigger to close the clamp head so that the radiating rod end plug is enclosed inside the clamp head; after confirming that the source rod has been reliably restrained by the clamp head and will not fall off, raising the source rod until it is completely removed from the source rod basket; moving the source rod above the source frame module, locating the loading channel, lowering the source rod and bringing it into contact with the bottom plate of the source frame; operating the trigger to open the clamp head; retracting the clamp to completely remove it from the source rod; and then releasing the trigger to complete the source rod loading; repeating the above operations to continue loading other source rods. S04, Confirmation of the new source bar code: Loosen the bolts on the tube clamp of the magnifying glass and initially install the magnifying glass onto the extension tube of the long-handled tool; place the long-handled tool with the magnifying glass on the upper surface of the source bar body, observe the image inside the magnifying lens with a telescope, and read the code of the source bar. S05, Reset the source frame module: Use the source frame module fixture to pick up the source frame module that has been flipped on the source loading and unloading workbench or source frame shelf, and place it in the predetermined position in the source shelf through the source loading slide rail. Repeat this operation multiple times until all empty spaces in the source shelf are filled with source frames. Use the source frame module fixture to pick up the source shelf channel cover plate of the source loading and unloading workbench or source frame shelf, and place it back on top of the uppermost source frame module in the source shelf through the source loading slide rail. Repeat this operation multiple times until the channel cover plate at the top of each channel on the source shelf is in place. S06, Finishing: Use a locking plate pliers tool to close the protective locking plates of the source rack. Align the locking plate pliers with the operating plate of the protective locking plate and rotate it horizontally 90 degrees toward the center of the source rack to close the module channel. Repeat this operation to close all the protective locking plates on the source rack module channel. After completion, other personnel should use a telescope to double-check and record the results. Check and confirm that all source holding frames on the source loading and unloading workbench under the source storage well have been emptied and that no radioactive source rods are left behind. Check and confirm that the source holding frame shelves and source rod baskets that need to be removed from the source storage well have no radioactive source rods left behind. Use a long-handled hook tool to remove the source rod baskets from the source well. Remove the source loading and unloading workbench from the source well. Disassemble and recover the source loading slide rails. Disassemble and recover all kinds of long-handled operating tools. Reinstall the removed source well cover.

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