Logistics Simulation System

Abstract

To provide a physical distribution simulation system that makes it possible to simulate a future physical distribution from storing wastes having occurred due to the demolition of a nuclear facility to carrying these out of place.SOLUTION: The present invention is a physical distribution simulation system comprising: an input unit for inputting prescribed information regarding wastes occurring over time in the process of demolishing the structure to be demolished; a computation unit for calculating, on the basis of the prescribed information, a storage process that indicates the storage state of the wastes in a prescribed period from the occurrence of the wastes to when the wastes are carried into or out of premises; and a display unit for displaying a display image in which information indicating a change over time of the storage process in the prescribed period is visualized.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a logistics simulation system for predicting the logistics process from waste generation to its removal. [Background technology]

[0002] When a nuclear facility is decommissioned, waste is generated, including radioactive and non-radioactive waste. Of the waste, low-level radioactive waste and non-radioactive waste that is not radioactive waste are stored within the nuclear facility for a specified period after generation. After storage, the waste is transported to an on-site or off-site burial disposal site, or for reuse off-site. Waste to be stored undergoes processes such as equipment dismantling, treatment processes such as decontamination, and storage, and all processes are managed as logistics over a long period of time until it is transported on-site or off-site. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-26643 Summary of the Invention [Problem to be solved by the invention]

[0004] Waste is stored in vacant space within the facility. The storage capacity of waste in vacant space is limited, so it is desirable for the entire process of waste distribution, from generation to removal, to proceed smoothly. If waste storage capacity is not secured and delays occur during the waste distribution process, waste may be retained, causing the demolition work to be suspended and decommissioning to be delayed. Therefore, if it is possible to grasp the amount of waste generated and stored over time during the future period from the start of dismantling of a nuclear facility to the time of waste storage and removal, and to grasp what measures will be required at a certain time, it is possible to take measures in advance. The management system described in Patent Document 1 manages the amount of waste stored based on the current state of the waste, but does not calculate the future distribution of waste.

[0005] An object of the present invention is to provide a logistics simulation system that can simulate future logistics, from storage to removal of waste generated in the dismantling of a nuclear facility. [Means for solving the problem]

[0006] One aspect of the present invention includes an input unit that inputs predetermined information regarding waste generated over time in a demolition process of a structure to be demolished; a calculation unit that calculates a storage process indicating the storage state of the waste for a predetermined period from the generation of the waste to the transport of the waste within or outside the premises based on the predetermined information; and a display unit that displays a display image that visualizes information indicating changes over time in the storage process for the predetermined period, wherein the input unit is configured to input information regarding the amount of the waste generated over time, a storage capacity that changes over time in a storage area for storing the waste, which is an empty space within the premises where the structure is installed, information regarding a processing time required for a processing process to treat the waste generated in the demolition process, information regarding a transport time required to transport the waste stored in the storage area, a conversion coefficient for converting the amount of waste into the number of containers having a predetermined capacity, transport conditions that indicate the frequency of transporting the containers, and information regarding the amount of waste to be removed, the amount of waste to be moved, and the amount of waste according to a storage form between the demolition process and the storage process. the calculation unit calculates the number of containers using the waste amount and the conversion coefficient, calculates the time from when the waste is generated to when the container is carried out through the processing process and the storage process based on the information on the processing time and the information on the carrying-out time, calculates the storage volume of the containers stored in the storage area over time based on the number of containers generated in or carried into the storage area and the number of containers carried out from the storage area, calculates the storage capacity over time that increases or decreases depending on the removal of the waste, the movement of the waste, and the storage form of the waste between the dismantling process and the storage process, and calculates an available storage capacity that indicates the available capacity in the storage area for storing the containers based on the storage capacity and the storage volume, and the display unit displays a first display image that enables visual recognition of the logistics process of the containers from when the containers are generated to when they are carried out, and a second display image that displays the change over time between the available storage capacity and the storage volume in the storage area over time. It is a logistics simulation system. [Effects of the Invention]

[0007] This makes it possible to simulate future logistics, from storing waste generated by the dismantling of nuclear facilities to transporting it away. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating an example of a nuclear facility according to an embodiment of the present invention. [Figure 2] FIG. 1 is a block diagram showing a waste treatment flow. [Figure 3] FIG. 1 is a block diagram showing a configuration of a logistics simulation system. [Figure 4] FIG. 10 is a diagram showing an example of an input image for inputting predetermined information about waste. [Figure 5] FIG. 10(a) is a diagram showing an example of a second display image displayed on the display unit 5, and FIG. 10(b) is a diagram showing an example of a third display image. [Figure 6] FIG. 10 is a block diagram showing a waste treatment flow according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] During the dismantling process associated with the decommissioning of a nuclear facility that houses a nuclear reactor, waste is generated when the reactor itself, peripheral reactor equipment, building, and other structures are dismantled. The following explains the disposal plan for low-level radioactive waste and non-radioactive waste that are subject to treatment among the waste generated during decommissioning. The waste generated during decommissioning includes radioactive waste contaminated with radioactive materials and non-radioactive waste that is not contaminated with radioactive materials. Low-level radioactive waste is classified in descending order of radioactivity level into L1 (relatively high level), L2 (relatively low level), and L3 (extremely low level). L1 and L2 waste are transported to an off-site burial disposal site.

[0010] In this embodiment, decommissioning of low-level radioactive waste (L3), waste that does not need to be treated as radioactive waste (CL), and non-radioactive waste (NR) will be described. After decontamination treatment of L3 waste, CL waste, and NR waste, for example, in a building, the waste is divided into pieces of a size that can be stored in a container (see FIG. 2) having a predetermined shape and a predetermined capacity, and then stored in the container. Each container is assigned an ID for individual identification. The ID and information such as the type of waste and its radioactivity level are associated and recorded, and a storage period is set for each container according to its contents and radioactivity level. The storage period is set to a period during which the radioactivity level of the waste will be below the standard. A decommissioning plan needs to be formulated so that the amount of containers stored in the storage area, which will be described later, does not exceed the storage capacity.

[0011] The configuration of the nuclear facility that is the subject of the simulation in this embodiment will be described below with reference to FIGS. 1 and 2. In this embodiment, the area within the nuclear facility NP is referred to as the on-site area, and the area outside the nuclear facility NP is referred to as the off-site area. As shown in FIG. 1, the nuclear facility NP includes a building T. In this embodiment, the nuclear facility NP includes a first building T1 and a second building T2. A travel path is defined between the first building T1 and the second building T2 for a vehicle V carrying a container. The number of buildings may be one, or two or more. The number of buildings may increase or decrease during the decommissioning process.

[0012] FIG. 2 is a diagram schematically illustrating the logistics process within the nuclear facility NP. The first building T1 is a building in which equipment necessary for power generation, such as a nuclear reactor or a turbine, is installed as a structure U. In the first building T1, a demolition process for dismantling the structure U and a treatment process for treating waste generated in the demolition process are carried out. Hereinafter, the treatment process carried out in the first building T1 is referred to as the first treatment process. In this embodiment, the first treatment process includes, for example, decontamination, container refilling, and processes related to primary storage.

[0013] The second building T2 does not contain any objects to be dismantled, but is a building where various processes and storage are carried out on containers that have been brought in. In the second building T2, a processing process is carried out to further process the containers that have been brought in from the first building T1, and a storage process is carried out to store containers that have become storable through the processing process. Hereinafter, the processing process carried out in the second building T2 will be referred to as the second processing process. In this embodiment, the second processing process is exemplified by processes related to measurement and waste disposal.

[0014] In this embodiment, waste is generated in a first building T1 in which a structure U is installed and stored in a container. The container containing the waste undergoes a first processing step and is transferred to a second building T2 in which a storage area is secured. The container then undergoes a second processing step in the second building T2 and is transported within or outside the premises. As shown in FIG. 2, the container is transported within the premises to a buried disposal site within the premises, or is transported off-site to a buried disposal site off-site or for reuse. Hereinafter, the transport of the container within or outside the premises may be simply referred to as "transportation." The container is transported from the first building T1, transported within the premises (transportation step), and then transported into the second building T2. The container transported from the first building T1 is loaded onto, for example, a vehicle V shown in FIG. 1 and transported within the premises.

[0015] The storage area is an area for storing waste within the premises where the structure U is installed. In this embodiment, the storage area is an empty space within the building. Containers containing waste are stored in the storage area within the building. The storage area includes existing space that can already be used as a storage location for containers before demolition work and additional space that becomes available as a storage location for containers after the structure U is demolished. The additional space changes over time as the demolition work progresses. In this embodiment, the storage capacity is the number of containers that can be stored, calculated based on the floor area of ​​the storage area. Specifically, the storage capacity is set taking into account the floor area of ​​the storage area, the volume (e.g., height) of the space within the building where the structure U is not installed, from the floor to the ceiling, and the floor load-bearing capacity limit. The storage capacity changes over time based on the sum of the existing space and the additional space. Containers that have exceeded their storage period are transported to a burial disposal site within the premises or off-site.

[0016] The storage amount is the number of containers actually stored in the building, and the available storage capacity is the storage capacity minus the storage amount at a given point in time.

[0017] The containers are transported to radioactive waste treatment facilities, storage facilities, burial disposal sites, etc. As mentioned above, in the dismantling of a nuclear facility NP, the management period from the start of dismantling to the removal of the waste is long, and since each processing process carried out on the waste during the management period is a series of processes, a delay in any one of the processes could cause a delay in the overall processing. Therefore, it is necessary to understand in advance what the future state of waste logistics will be from the generation of waste to the removal of waste.

[0018] The following describes a logistics simulation system that visualizes the logistics from the generation of waste to its removal during the dismantling process of a structure U installed at a nuclear facility NP or other facility to be dismantled. The logistics simulation system simulates the future state of the waste that will be generated.

[0019] 3, the logistics simulation system 1 includes, for example, an input unit 2 for inputting information required for the simulation, a calculation unit 3 for calculating the state of the waste based on the input data, a memory unit 4 for storing data required for the calculation, and a display unit 5 for displaying an image based on the calculation results. The logistics simulation system 1 is configured, for example, by an information processing terminal device such as a personal computer that is capable of inputting and outputting information.

[0020] The input unit 2 is, for example, an interface for inputting information based on a display image displayed on the display unit 5. The input unit 2 has input devices such as a touch panel, a keyboard, and a voice input. When the input unit 2 is a touch panel, it may be configured by the display unit 5. The input unit 2 is configured to input predetermined information regarding waste generated over time in the dismantling process of a structure U of the nuclear facility NP to be dismantled.

[0021] The calculation unit 3 calculates a storage process that indicates the storage status of waste for a predetermined period from waste generation to removal based on predetermined information. The calculation unit 3 is realized, for example, by a hardware processor such as a CPU (Central Processing Unit) executing a program (software). Some or all of these components may be realized by hardware (including circuitry) such as an LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or GPU (Graphics Processing Unit), or may be realized by a combination of software and hardware. The program may be stored in advance in a storage device (a storage device with a non-transitory storage medium) such as an HDD or flash memory provided in the storage unit 4, or may be stored in a removable storage medium (a non-transitory storage medium) such as a DVD or CD-ROM, and installed in the storage device by inserting the storage medium into a drive device.

[0022] The display unit 5 is a display device such as a liquid crystal display, an organic electroluminescence (EL) display, a touch panel, etc. The display unit 5 displays a display image that visualizes information showing changes over time in the storage process for a predetermined period.

[0023] FIG. 4 shows an example of an input image P for inputting predetermined information about waste. The input image P is displayed on the display unit 5 and constitutes the input unit 2. The input image P can be set arbitrarily, and the predetermined information can be added or modified as appropriate. The predetermined information is input as an initial condition, with plausible values ​​prepared as data. The predetermined information may be changed or added as appropriate.

[0024] The predetermined information includes, for example, information regarding the amount of waste generated over time, the storage capacity that changes over time, and the processing time required for the processing process. The input image P can input information regarding the removal time required to remove waste (containers) stored in the storage area from the premises to the outside, removal conditions indicating the frequency of removal, and a conversion coefficient for converting the amount of waste into the number of containers having a predetermined capacity. The container may be defined singularly or in units of multiple containers.

[0025] The amount of waste in the predetermined information is set, for example, for each type of waste. The predetermined information includes L3 waste, which has an extremely low level of radioactivity and is subject to storage, CL waste, which does not need to be treated as radioactive waste, and NR waste, which is non-radioactive waste. Each type of waste is further classified into concrete waste, which is made up of concrete, and metal waste, which is made up of metal.

[0026] The input image P allows input of information regarding the processing time required for the first processing process carried out in the first building T1 and the second processing process carried out in the second building T2, and information regarding the transportation time required for the transportation process of transporting the container from the first building T1 to the second building T2.

[0027] The processing time in the specified information is the time required for the processing process to process the waste generated in the demolition process of structure U. The processing process includes multiple processes such as sorting, decontamination, container refilling, inspection, measurement, and primary container storage. Temporary storage and transportation processes may be included between the multiple processes. The processing process includes an L3 processing process for processing L3 waste, a CL processing process for processing CL waste, and an NR processing process for processing NR waste.

[0028] The input image P may allow input of information regarding the amounts of L3 waste, CL waste, and NR waste generated. For example, the input image P may allow input of the proportions of L3 waste, CL waste, and NR waste individually. The processing process may include a concrete processing process for processing concrete waste and a metal processing process for processing metal waste. The input image P may allow input of information regarding the amounts of concrete waste and metal waste generated according to their types. For example, the input image P may allow input of the actual amounts generated individually, or may allow input of the proportions.

[0029] The removal time, which is one of the predetermined information, is the time required for waste (containers) stored in the storage area to be removed to an on-site landfill or off-site. The removal time may be input as a direct time, or a calculation formula for converting the time may be input. The input image P may also be capable of inputting the costs required for the processing process. The input image P may also be capable of inputting the amount of waste to be removed, the amount of waste to be moved, and the amount of waste depending on the storage form, such as temporary storage or primary storage, between the dismantling process and the storage process.

[0030] The input unit 2 allows input of information regarding the processing capacity of each of the multiple processes included in the processing process, and an acceptance logic indicating the order of the multiple processes. The input image is, for example, an image for selecting and inputting each process shown in FIG. 2 or FIG. 4 according to the nuclear facility. The display unit 5 displays an input image (not shown) of the acceptance logic. For example, the input image visualizes and shows each process from the dismantling process of L3 waste in a building, through each processing process and storage process, to transporting the waste on or off the premises, using a flow logic (not shown) that subdivides the processing flow of FIG. 2.

[0031] This input image allows input of the flow logic of multiple processes executed in each process. Each process can be set, added, or deleted as desired. The flow can be freely changed depending on the type and amount of waste, customer requests, etc. The flow logic shows icons representing processes and arrows indicating the flow of processes entered between the icons. The flow logic visualizes the flow of processes executed in each process, including process branching, integration, and parallel processing.

[0032] The calculation unit 3 calculates a storage process that indicates the storage state of waste during a predetermined period from waste generation to removal, based on data related to predetermined information input via the input image P. The calculation unit 3 calculates the number of containers, for example, using the input amount of waste and a conversion coefficient. The conversion coefficient is, for example, the conversion ratio from the amount of waste generated to the number of containers (number of containers / storage volume in tons). The storage volume per container is calculated by multiplying the waste storage rate by the specific gravity of the waste by the container internal volume. The number of containers may be one or more. As a result, the amount of waste generated and the amount of storage are calculated based on the number of containers.

[0033] The containers include a temporary storage container C1 and a storage container C2. The temporary storage container C1 is a container for storing waste generated during demolition work. The temporary storage container C1 is also used to temporarily store containers during the processing process. The storage container C2 is a container in which the waste in the temporary storage container C1 is transferred to a container suitable for the inspection required for removal and removal. The calculation unit 3 converts the amount of waste generated into the amount generated per any unit of time based on the calculation result. The calculation unit 3 converts the amount of waste generated into any unit, such as per hour, per day, or per week. The calculation unit 3 generates a display screen (not shown) showing the amount of waste generated and displays it on the display unit 5. In this embodiment, the storage capacity is the sum of the storage capacity of the temporary storage container C1 that is temporarily stored and the storage capacity of the storage container C2. The storage amount is the sum of the amount of waste actually stored in the temporary storage container C1 and the storage container C2.

[0034] The display unit 5 may display a display screen (not shown) showing the amount of waste generated. The display screen shows the amount of waste generated per hour for each type of waste. The calculation unit 3 calculates the overall process flow from the generation of waste through the processing and storage processes to the removal of containers onto or off the premises, based on the information regarding the processing time and removal time input via the input image P and the input acceptance logic. The calculation unit 3 calculates the number and timing of containers that can be accepted for each of the multiple processes, based on data regarding the specified information input via the input image P.

[0035] The calculation unit 3 calculates the time from the generation of waste to its removal for each container based on the ID attached to the container and the information added thereto. This calculates the time required for one container from its generation to its removal. The calculation unit 3 individually calculates the time from the generation of L3 waste, CL waste, and NR waste to their removal on or off the premises after passing through the L3 treatment process, CL treatment process, and NR treatment process.

[0036] In this embodiment, the calculation unit 3 adjusts the movement time and timing so that each processing step can accommodate the number of containers that can be processed at one time, preventing containers from becoming stuck at each processing step. For example, the measurement shown in FIG. 2 is a process in which one container is measured at a time. When there are two measurement targets, the calculation unit 3 moves the next container to the measurement section after completing the measurement of the previous container. The calculation unit 3 calculates the timing of container movement based on information such as the number of containers that can be processed and the time that has been input in advance into the input image P, and displays it as a logistics process as described below.

[0037] The calculation unit 3 individually calculates the time from when concrete waste and metal waste are generated until they pass through the concrete processing process and the metal processing process and are transported within or outside the premises. When concrete waste and metal waste are stored in the same storage area, the calculation unit 3 calculates the combined storage volume of containers of concrete waste and metal waste over time. The calculation unit 3 generates a first display image M1 that enables the logistics process of the containers from generation to transport to be visually confirmed, and displays it on the display unit 5.

[0038] The first display image M1 is an image that displays the processing flow of FIG. 2 in detail based on the acceptance logic. Here, the first display image M1 will be described with reference to FIG. 2. The first display image M1 displays multiple types of containers according to the radioactivity level of the waste in an identifiable manner, such as icons, and displays the processing flow for each waste. The first display image M1 also displays a flow diagram of the processing performed for each type of container generated in or transported into the building. For convenience, the first display image M1 of this embodiment displays a representative processing flow for one type of waste. In the first display image M1, the container icons move sequentially along each process shown in the flow diagram, from generation in the first building T1 through each processing step to transporting the container on-site to the second building T2, transporting the container to the second building T2, and transporting the container from the second building T2 to either inside or outside the site.

[0039] The first display image M1 displays the number of containers being processed in each process. Based on the first display image M1, the manager can visually see which process is being performed on each type of container and the number of containers currently in each process. Based on the first display image M1, the manager can visually simulate the logistics process of containers within the building.

[0040] In the first display image M1 of this embodiment, the area where the processing step is performed is displayed as a processing section, and the area where the container is stored is displayed as a storage section. The processing section and storage section are conceptual sections used to explain the logistics process, and are different from areas that are physically set up within an actual building. Therefore, within an actual building, processing and storage may be performed in the same area (room), or in different areas (rooms). In FIG. 2, the primary storage of the storage container C2 is displayed within the processing section as the first processing step, but the actual storage container C2 is placed in a storage area. The primary storage may also be displayed within the storage section as a storage step. The storage section and the storage area are not necessarily synonymous.

[0041] The first display image M1 shows the process over time in which a container enters the processing area, stays there for the processing time that elapses as the processing process is carried out, leaves the processing area and enters the storage area, stays there for the storage time in the storage process, and leaves the storage area.

[0042] The first display image M1 of this embodiment displays, as a video, a logistics process calculated by the calculation unit 3 in accordance with the input information. In this embodiment, a structure U (waste) dismantled in the first building T1 is stored in a temporary storage container C1 and enters the processing area. The temporary storage container C1 enters the decontamination process and remains in the decontamination process area for the time required for the decontamination process. Next, the temporary storage container C1 is converted into a storage container C2 in the container refilling process and remains in the container refilling area for the time required for refilling. Next, the storage container C2 remains in the primary storage area for the time input as primary storage. After primary storage, the storage container C2 is transported within the premises and carried into the second building T2. At this time, the storage container C2 is moved to the second building T2 over the time input as the internal transportation time. As in the first building T1, the storage container C2 remains in the processing area for the time required for the second processing process and is then placed into secondary storage. Containers that have passed the input secondary storage time are transported within or outside the premises. At this time, the storage container C2 is transported within or outside the premises over the time input as the transport time. In this way, the first display image M1 can simulate the actual waste logistics process by visualizing the logistics process of containers taking time into account.

[0043] The calculation unit 3 calculates the storage volume of containers stored in the storage area over time based on the number of containers stored in the storage area and the number of containers carried out from the storage area. The calculation unit 3 calculates the storage capacity over time that increases or decreases depending on the removal of waste, the movement of waste, and the storage form of waste between the dismantling process and the storage process, based on the input amount of waste to be removed, the amount of waste to be moved, and the amount of waste according to the storage form of waste between the dismantling process and the storage process.

[0044] The calculation unit 3 calculates the free storage capacity relative to the storage amount based on the calculated storage amount and storage capacity, thereby enabling the calculation unit 3 to calculate a storage process that indicates the storage status of the container from the time the container is generated until it is carried out.

[0045] The calculation unit 3 calculates the total amount of storage for each day by accumulating the amount of containers stored in the storage area over time for each day during the management period from the start of demolition of the structure U to the completion of removal of all waste. The calculation unit 3 calculates the amount of waste stored for each type for all days during the management period. The calculation unit 3 calculates the change in storage amount over time on a daily, weekly, or monthly basis. The calculation unit 3 calculates the storage amount on a daily, weekly, or monthly basis in units of, for example, one year, five years, or 20 years.

[0046] The calculation unit 3 calculates the free storage capacity indicating the free space available for storing containers in the storage area based on the storage capacity and the calculated storage amount. Based on the calculation result, the calculation unit 3 generates a second display image showing the change over time between the free space and storage amount existing in the storage area during the management period, and displays it on the display unit 5. The calculation unit 3 generates a graph in the second display image showing the change over time between the free space existing in the storage area and the storage amount including concrete waste and metal waste.

[0047] FIG. 5(a) shows an example of the second display image M2 displayed on the display unit 5. The second display image M2 displays, for example, the storage volume for each type of container. The storage volume is displayed using a graph covering a short-term to a long-term period, such as daily for one year, weekly for five years, or monthly for 20 years. The graph displays the free space in the storage area and the change over time in the storage volume, including concrete waste and metal waste. The graph also displays the free space along with the storage volume. The manager can check the change over time in the free space and storage volume in the storage area over a short-term to a long-term period. The illustrated second display image M2 is an example, and other display modes may be used as long as they can display the change over time in the free space and storage volume in the storage area during the management period.

[0048] Figure 5(b) shows a third display image M3 that shows the change in overall cost over time. The calculation unit 3 calculates the overall cost for the treatment process based on the cost data input in the input image P, generates a third display image M3 that shows the change in the calculated overall cost over time, and displays it on the display unit 5. The overall cost can be calculated by changing the input data at the end of waste treatment and the input data conditions for the costs required for each treatment. This makes it possible to simulate various patterns of cost change over the management period.

[0049] FIG. 1 shows a fourth display image M4 that displays a travel route R indicating the route along which the container will travel, as well as a first building T1 and a second building T2. The travel route R is shown between the first building T1 and the second building T2. A vehicle V transporting the container is shown on the travel route R. The fourth display image M4 displays, over time, the state in which the container is loaded onto the vehicle V and then travels along the travel route R. The fourth display image M4 also displays, over time, the state in which the vehicle V arrives at the second building T2 and stops while unloading the container. The calculation unit 3 displays, as a video, the movement of the container over time as the container travels along the travel route R, enters the first building T1, moves from the first building T1 to the second building T2, and is transported out of the second building T2 in the fourth display image M4.

[0050] As described above, the logistics simulation system 1 can simulate the future logistics of waste generated in association with the dismantling of a nuclear facility NP, from storage to removal. The logistics simulation system 1 can visualize the logistics of waste from its generation through the storage process to removal, based on the display image displayed on the display unit 5. The logistics simulation system 1 can graphically grasp the storage status of waste stored in a storage section at a certain time during the waste storage period, based on the display image displayed on the display unit 5.

[0051] According to the logistics simulation system 1, a series of costs related to logistics can be calculated by managing CL waste and NR waste based on the display image displayed on the display unit 5. According to the logistics simulation system 1, by changing the input conditions based on the display image displayed on the display unit 5, such as when waste processing will be completed during the management period and how much cost will be required, it is possible to calculate costs corresponding to various conditions that may change in the future.

[0052] Although the present invention has been described above using the embodiments, the present invention is not limited to these embodiments, and various modifications and substitutions can be made without departing from the spirit of the present invention. For example, the logistics simulation system 1 may be applied to logistics simulation of not only L3 waste, CL waste, and NR waste, but also L1 waste and L2 waste.

[0053] In the above embodiment, the nuclear facility NP has been described as including a first building T1 and a second building T2, but the present invention is not limited to this. As shown in Fig. 6, the nuclear facility NP may include one building T, and the dismantling process, processing process, and storage process may be carried out within the single building T. In other words, the logistics simulation system 1 is also capable of performing a simulation based on a single building T. Furthermore, if the simulation results indicate that a second building T2 needs to be constructed during the decommissioning process, the second building T2 can also be added and a simulation can be performed.

[0054] In the above embodiment, the storage area is an empty space inside a building, but this is not limited to this. If the structure U to be demolished is the building itself, the storage area may be an empty space outdoors. In other words, any empty space on the premises that is large enough to store waste can be input as a storage area.

[0055] In the above embodiment, the processes shown in FIG. 2 are exemplified as the processing steps (first processing step and second processing step), but the types of processing steps are not limited to these. Different processing may be performed depending on the type of waste, and the number of steps is not limited. The processing steps can be freely set according to the type of waste in the process of building the logistics simulation system 1.

[0056] In the above embodiment, the storage capacity is the sum of the storage capacity of temporary storage container C1 and the storage capacity of storage container C2, and the storage amount is the sum of the amount of temporary storage container C1 and storage container C2 that are actually stored. However, the storage capacity and storage amount may be calculated for temporary storage container C1 alone or for storage container C2 alone. [Explanation of symbols]

[0057] 1. Logistics Simulation System 2 Input section 3 Arithmetic section 5 Display section CL Waste M1 First display image M2 Second display image M3 3rd display image T building T1 first building T2 second building

Claims

1. an input unit for inputting predetermined information regarding waste generated over time in the demolition process of a structure to be demolished; a calculation unit that calculates a storage process indicating a storage state of the waste during a predetermined period from the generation of the waste to the transport of the waste within or outside the premises based on the predetermined information; a display unit that displays a display image that visualizes information showing a change over time in the storage process during the predetermined period, The input unit The amount of waste generated over time; and A storage capacity that changes over time in a storage area for storing the waste, which is an empty space within the premises where the structure is installed; Information about a processing time required for a processing step to process the waste generated in the dismantling step; Information about the time required to remove the waste stored in the storage area; and A conversion factor for converting the amount of waste into the number of containers having a predetermined capacity; A carrying-out condition indicating a frequency at which the container is carried out; The amount of the waste to be removed, the amount of the waste to be moved, and the amount of the waste according to the storage form between the dismantling process and the storage process; can be input, The calculation unit Calculating the number of containers using the amount of waste and the conversion factor; Calculating the time from generation of the waste through the treatment process and the storage process to removal of the container for each container based on the information on the treatment time and the information on the removal time; Calculating the amount of the containers stored in the storage area over time based on the number of the containers generated in or transported into the storage area and the number of the containers transported out of the storage area; Calculating the storage capacity over time, which increases or decreases depending on the removal of the waste, the movement of the waste, and the storage form of the waste between the dismantling process and the storage process; calculating an available storage capacity indicating an available capacity for storing the container in the storage area based on the storage capacity and the storage amount; The display unit a first display image that enables the logistics process of the container from its generation to its removal to be visually confirmed; a second display image that displays a change over time in the free storage capacity and the storage amount existing in the storage area during the predetermined period; Logistics simulation system.

2. the waste is generated in a first building in which the structure is installed, undergoes a first treatment process in the first building, is transported to a second building in which the storage area is secured, undergoes a second treatment process in the second building, and is then removed from the second building; The input unit The storage capacity that changes over time in the second building; and Information regarding the processing times required for the first processing step performed in the first building and the second processing step performed in the second building; and and information regarding a transportation time required for a transportation process of transporting the container from the first building to the second building. The logistics simulation system according to claim 1 .

3. the input unit allows input of acceptance logic configured by information on the processing capacity of each of a plurality of processes included in the processing process and the order of the plurality of processes; the calculation unit calculates the number and timing of the containers that can be accepted for each of the plurality of processes based on the acceptance logic.

3. A logistics simulation system according to claim 1.

4. the input unit allows input of types of the plurality of steps included in the processing steps; 4. A logistics simulation system according to claim 3.

5. the input unit allows input of costs required for the processing step; the calculation unit calculates an overall cost required for the processing steps based on the input costs; the display unit displays a third display image that displays a change in the calculated overall cost over time.

5. A logistics simulation system according to claim 1.

6. The first display image is As a logistics process of the container, a processing section in which the processing step is performed and a storage section in which the container is stored are displayed; The logistics process displays a time-dependent process in which the container enters the processing section, stays there for the processing time that elapses while the processing step is being performed, leaves the processing section, enters the storage section, stays there for the storage time in the storage step, and leaves the storage section.

6. A logistics simulation system according to claim 1.

7. The waste is composed of L3 waste, which is radioactive waste with an extremely low level of radioactivity, CL waste, which does not need to be treated as radioactive waste, and NR waste, which is not radioactive waste; The treatment process includes an L3 treatment process for treating the L3 waste; a CL treatment step for treating the CL waste; a NR treatment step for treating the NR waste; The input unit allows information regarding the amounts of L3 waste, CL waste, and NR waste generated to be input individually, The calculation unit individually calculates the time from when the L3 waste, the CL waste, and the NR waste are generated until they are transported through the L3 treatment process, the CL treatment process, and the NR treatment process.

7. A logistics simulation system according to claim 1.

8. The waste is composed of concrete waste composed of concrete and metal waste composed of metal, The treatment step includes a concrete treatment step for treating the concrete waste; a metal processing step for processing the metal waste; The input unit allows input of information regarding the amount of the concrete waste and the metal waste generated according to their types, The calculation unit individually calculates the time from when the concrete waste and the metal waste are generated until they are transported through the concrete processing step and the metal processing step. The logistics simulation system according to any one of claims 1 to 7.

9. When the concrete waste and the metal waste are stored in the same storage area, The calculation unit Calculating the storage amount of the concrete waste and the metal waste in the container over time; Calculating the free storage capacity relative to the storage amount; The display unit displays, on the second display image, a change over time in the free storage capacity present in the storage area and the storage amount including the concrete waste and the metal waste.

9. A logistics simulation system according to claim 8.

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