Radioactive waste tracking management system

Abstract

The present invention provides a radioactive waste tracking management system which comprises: a history tracking management unit (100) tracking and managing all history information generated in a process of generating, transporting, and disposing of radioactive waste; a document management unit (200) managing a document used in a process of inputting history information for generating, transporting, and disposing of the radioactive waste; a statistics unit (300) providing statistics for each item according to an operation status for each step of the radioactive waste; and a radioactive waste operation status unit (400) capable of inquiring about and outputting a transport status of the radioactive waste.

Description

Radioactive Waste Tracking Management System

[0001] The present invention relates to a radioactive waste tracking management system, and more particularly, to a radioactive waste tracking management system capable of safely managing information produced from the entire process of disposing of radioactive waste in a combined disposal facility.

[0002] Radioactive waste refers to waste generated during the use of nuclear energy and containing radioactive materials. Radioactive waste is handled at disposal facilities, which either bury the waste in bedrock or store it within concrete retaining walls or containment facilities. These facilities are currently comprised of complex disposal facilities, including a first-stage cavern disposal facility and a second-stage surface disposal facility.

[0003] Conventional radioactive waste tracking and management systems primarily focused on radioactive waste disposed of in cavernous disposal facilities, a Phase 1 disposal facility. However, they lacked the flexibility to accommodate complex disposal facilities, including the recently added surface disposal facility, a Phase 2 disposal facility. As radioactive waste disposal methods diversify, research is being conducted on systems that can efficiently manage such waste.

[0004] Korean Patent No. 10-2371792 relates to a "radioactive waste tracking inspection and disposal management system," which includes a management server that manages a database storing information on radioactive waste by unique number and transmits and receives radioactive waste information for each unique number through the Internet; And a terminal having a radiation detector, a tag reader, a wireless communication module, a display unit, and an input unit, and which reads a tag of radioactive waste and transmits and receives a unique number included in the tag and radioactive waste information and a user ID for the unique number through a web interface; wherein the radioactive waste information includes at least a dose rate and a measurement date, and the management server authorizes data exchange with the terminal for the radioactive waste information of the unique number when the unique number of the received radioactive waste conforms to a predetermined rule and the user ID is a registered ID, wherein the terminal, when selecting a comparison menu, compares a dose rate measured by the terminal for the radioactive waste corresponding to the unique number with a dose rate stored in a management server database, and displays whether or not the dose rate is within an allowable range by comparing a corrected dose rate in which nuclear decay is taken into account by an equivalent half-life obtained by weighting the dose contribution ratio per unit mass of radioactive waste constituent nuclides. However, the above-mentioned radioactive waste tracking inspection and disposal management system had the problem of making it difficult to manage the disposal history of radioactive waste at the surface disposal facility, which is a second-stage disposal facility.

[0005] In addition, Korean Patent No. 10-2242394 relates to "Method for Determining a Radioactive Waste Treatment Process, Method for Managing a Radioactive Waste Treatment Process History, and Radioactive Waste Management System", and comprises: a package management code assignment unit that assigns a package management code based on the characteristics of radioactive waste to a plurality of packages for each package unit of the waste; a packaging unit that packages the plurality of packages, each of which is assigned a package management code by the package management code assignment unit, into a drum; a drum management code assignment unit that hierarchically includes the package management codes of each of the plurality of packages for the drum packaged by the packaging unit and assigns a drum management code indicating information about the drum to the drum; a processing unit that determines a treatment process for each of the plurality of packages included in the drum based on the package management code and the drum management code; And after the processing process is performed, a package management code update unit is included for updating the package management code by adding a code indicating information on which the processing process has been performed to the package management code, wherein the processing unit determines whether waste information of radioactive waste entered in the package management code satisfies a preset target level, determines whether radioactive waste satisfying the target level satisfies a preset local level, disposes of radioactive waste satisfying the target level and the local level, and if the average radioactivity concentration of radioactive waste does not satisfy the preset target level, a processing process for satisfying the target level is determined, waste information of radioactive waste processed through the determined processing process is supplied, and it is determined whether the supplied waste information satisfies the preset target level, and it is determined whether radioactive waste satisfying the target level satisfies the preset local level, and radioactive waste satisfying the local level is disposed of, and if the supplied waste information does not satisfy the preset target level, the processing process is calculated,The above waste information is supplied, it is determined whether the target level is satisfied, it is determined whether the local level is satisfied, and the step of disposing of the radioactive waste is performed again, and the processing unit receives waste information of the radioactive waste, receives information on a preset processing process suitable for the input waste information, and an average radioactivity concentration of the radioactive waste is calculated through the input waste information, and the local level is a target radioactivity level for radioactive contamination generated in a portion of the radioactive waste, and the target level is a target radioactivity level for the processing of the entire radioactive waste and is calculated based on the set waste level and an additional target reduction rate, and the waste information includes information on at least one of a material, a shape, a volume, a mass, a density, a thickness, a surface contamination thickness, a distribution of radionuclide concentrations for surface contamination by nuclide, and a radionuclide concentration for a volume contamination portion by nuclide of the waste. However, the above radioactive waste management system had a problem in that it was difficult to manage the disposal history of radioactive waste for a complex disposal facility including a cave disposal facility, which is a stage 1 disposal facility, and a surface disposal facility, which is a stage 2 disposal facility.

[0006] The technical task of the present invention is to provide a radioactive waste tracking management system that can improve the system usability for the operation of a disposal facility by linking equipment and systems used in the process of inspection, transportation and disposal of radioactive waste, and can safely manage information produced from the entire process of disposing of radioactive waste in a combined disposal facility.

[0007] A radioactive waste tracking management system according to one embodiment of the present invention is characterized by including a history tracking management unit (100) for tracking and managing all history information generated in the process of generating, transporting, and disposing of radioactive waste; a document management unit (200) for managing documents used in the process of entering history information on the generation, transport, and disposal of radioactive waste; a statistics unit (300) for providing statistics by item according to the step-by-step operation status of the radioactive waste; and a radioactive waste operation status unit (400) capable of searching and printing the transport status of the radioactive waste.

[0008] Here, the history tracking management unit (100) is characterized by including a disposal preparation inquiry unit (110) capable of managing the distinction between a stage 1 cave disposal facility and a stage 2 surface disposal facility, and capable of searching for transportation and disposal schedule information of radioactive waste; and an automatic disposal registration unit (120) for radioactive waste specified by the disposal preparation inquiry unit (110).

[0009] The above document management unit (200) is characterized by including a disposal preparation document inquiry unit (210) capable of managing the distinction between a stage 1 cave disposal facility and a stage 2 surface disposal facility, and capable of searching for documents by disposal transport number or disposal preparation document title; and a disposal warehouse disposal document inquiry unit (220) capable of searching for documents by radioactive waste package number or disposal warehouse disposal document title.

[0010] The above statistical unit (300) is capable of managing the distinction between the first stage cave disposal facility and the second stage surface disposal facility, and includes a disposal radioactivity analysis unit (310) that analyzes the total radioactivity and the concentration of each nuclide for each disposal site; and a radioactive waste level classification unit (320) that classifies the radioactivity level by calculating the concentration of each nuclide for each designated date; and the disposal radioactivity analysis unit (310) calculates the total radioactivity (N) for the inquiry date or the designated date by the following mathematical expression 1. A ) is characterized by producing.

[0011] Mathematical formula 1

[0012]

[0013] Here, N0 is the radioactivity on the nuclide assessment date, and T 1 / 2 is the half-life of each nuclide, and t is the decay time (nuclide evaluation date - (inquiry date or designated date)).

[0014] The above statistical unit (300) is characterized by automatically classifying the contents of radioactive waste based on big data of pre-stored packaging photos of radioactive waste.

[0015] In relation to the terms described in this specification, a stage 1 cavern disposal facility refers to a facility that manages radioactive waste generated during the operation or decommissioning of a nuclear power plant by storing it in an underground vertical cave. It mainly stores intermediate-level or lower radioactive waste inside a drum and in a sealed state, and a stage 2 surface disposal facility refers to a facility that stores and manages radioactive waste by filling a disposal site installed on the surface with it and sealing it. It mainly stores low-level or lower radioactive waste inside a drum and in a sealed state. Radioactive waste is an abbreviation for radioactive waste. In addition, a combined disposal facility refers to a stage 1 cavern disposal facility and a stage 2 surface disposal facility. It is a facility that can selectively dispose of radioactive waste in a stage 1 cavern disposal facility or a stage 2 surface disposal facility depending on the energy state of the radioactive waste.

[0016] The present invention has the effect of providing a radioactive waste tracking management system that improves the system usability for the operation of a disposal facility by linking equipment and systems used in the process of inspecting, transporting, and disposing of radioactive waste, and safely manages information produced from the entire process of disposing of radioactive waste in a combined disposal facility.

[0017] FIG. 1 is a schematic diagram showing the configuration of a radioactive waste tracking management system according to one embodiment of the present invention.

[0018] Figure 2 is a schematic diagram showing the detailed configuration of a radioactive waste tracking management system according to one embodiment of the present invention.

[0019] FIG. 3 is a schematic diagram showing a process of classifying the contents of a packaging photograph in a statistical section (300) of a radioactive waste tracking management system according to one embodiment of the present invention.

[0020] The embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. The following embodiments may be modified in various ways, and the scope of the present invention is not limited to the embodiments described below. Rather, these embodiments are provided to more faithfully and completely explain the present disclosure and fully convey the spirit of the present invention to those skilled in the art.

[0021] Additionally, the thickness and size of each layer in the drawings are exaggerated for convenience and clarity of explanation, and like symbols in the drawings indicate like elements. As used herein, the term "and / or" includes any one of the listed items and any combination of one or more of them.

[0022] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting of the present invention. As used herein, the singular forms "a," "an," and "the" include plural forms unless the context clearly dictates otherwise. Furthermore, when used herein, the words "comprise" and / or "comprising" specify the presence of stated features, numbers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, elements, components, and / or groups thereof.

[0023] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0024] FIG. 1 is a schematic diagram showing the configuration of a radioactive waste tracking management system according to one embodiment of the present invention.

[0025] As illustrated in FIG. 1, a radioactive waste tracking management system according to an embodiment of the present invention comprises a history tracking management unit (100) for tracking and managing all history information generated in the process of generating, transporting, and disposing of radioactive waste; a document management unit (200) for managing documents used in the process of entering history information on generating, transporting, and disposing of radioactive waste; a statistics unit (300) for providing statistics by item according to the step-by-step operation status of the radioactive waste; and a radioactive waste operation status unit (400) capable of searching and printing the transport status of the radioactive waste.

[0026] Basically, the radioactive waste generated is submitted for disposal to a Stage 1 cavern disposal facility or a Stage 2 surface disposal facility. If the disposal of radioactive waste is submitted to a Stage 1 cavern disposal facility, it is processed in the following order: preliminary inspection, transportation, acceptance inspection, disposal inspection, loading, on-site transportation, and disposal. If the disposal of radioactive waste is submitted to a Stage 2 surface disposal facility, it is processed in the following order: preliminary inspection, transportation, acceptance inspection, disposal inspection, on-site transportation, and disposal. The radioactive waste tracking and management system according to the present invention is applicable to a combined disposal facility including a Stage 1 cavern disposal facility or a Stage 2 surface disposal facility, and relates to a waste tracking management system (WTS) that tracks and manages various radioactive wastes generated from the operation and decommissioning of a nuclear power plant, and can be used in the form of a computer management program stored in a management server.

[0027] Figure 2 is a schematic diagram showing the detailed configuration of a radioactive waste tracking management system according to one embodiment of the present invention.

[0028] As illustrated in FIG. 2, the history tracking management unit (100) can be configured to include a disposal preparation inquiry unit (110) capable of performing separate management for a stage 1 cave disposal facility and a stage 2 surface disposal facility, and capable of searching for transportation and disposal schedule information for radioactive waste; and an automatic disposal registration unit (120) for radioactive waste specified by the disposal preparation inquiry unit (110).

[0029] The above disposal preparation inquiry unit (110) can inquire about the transportation and disposal schedule information of radioactive waste. For example, for radioactive waste packages that have been determined to be suitable in the disposal inspections for the Stage 1 cavern disposal facility and the Stage 2 surface disposal facility, it can be implemented to prepare for disposal in a disposal facility by registering them in an Excel template based on the radioactive waste package number and transport number in order to distinguish whether to transport them to the Stage 1 cavern disposal facility or the Stage 2 surface disposal facility and the disposal schedule information. In addition, the transport information generated when transporting them by transport vehicle can be linked to the radioactive waste information, transport management information, and transport history status by using the transport number as a unique identification number. Afterwards, when selecting a disposal order or disposal transport number from the disposal preparation list, it is desirable to have a function that can inquire and modify detailed information on the corresponding disposal preparation.

[0030] The above disposal site automatic registration unit (120) automatically registers the details of disposing of radioactive waste in a disposal site during the process of placing the radioactive waste identified by the disposal preparation inquiry unit (110) in a stage 1 cave disposal facility or a stage 2 surface disposal facility. For example, it is preferable to configure it to automatically register the disposal site placement using a barcode device during the process of placing radioactive waste identified at a disposal site. At this time, the information identified by the barcode is linked to the radioactive waste tracking management system according to the present invention to check whether the package number of the radioactive waste identified by the disposal preparation inquiry unit (110) has been entered, and if the entered information is correct, it is automatically registered in the disposal site disposal to confirm the completion of placement.

[0031] The above document management unit (200) can be configured to include a disposal preparation document inquiry unit (210) capable of managing the distinction between a stage 1 cave disposal facility and a stage 2 surface disposal facility, and capable of searching for documents by disposal transport number or disposal preparation document title; and a disposal warehouse disposal document inquiry unit (220) capable of searching for documents by radioactive waste package number or disposal warehouse disposal document title.

[0032] The above disposal preparation document inquiry unit (210) can search for documents corresponding to radioactive waste prepared for disposal by the disposal transport number and disposal preparation document title in relation to specific radioactive waste prepared for disposal in the stage 1 cave disposal facility or the stage 2 surface disposal facility. For example, if the disposal transport number is A2 and the disposal preparation document title is ABC, by entering A2 in the disposal transport number field or ABC in the disposal preparation document title, the disposal preparation document containing major information such as the disposal transport number prepared for disposal, scheduled disposal date, number of packages, date of creation, and registrant can be searched.

[0033] In addition, the disposal repository disposal document inquiry unit (220) can search for documents by radioactive waste package number or disposal repository disposal document title in relation to specific radioactive waste disposed of in the disposal repository of the stage 1 cave disposal facility or stage 2 surface disposal facility. For example, if the radioactive waste package number is B2 and the disposal repository disposal document title is DEF, when B2 is entered in the radioactive waste package number or DEF is entered in the disposal repository disposal document title, the disposal repository disposal document containing major information such as the package number disposed of in the disposal repository, packaging date, creation date, and registrant can be searched.

[0034] The statistical unit (300) that provides statistics by item according to the operational status of the above radioactive waste by stage can be configured to include a disposal radioactivity analysis unit (310) that can manage the distinction between the stage 1 cave disposal facility and the stage 2 surface disposal facility, and analyze the total radioactivity amount and the concentration by nuclide by disposal site; and a radioactive waste level classification unit (320) that classifies the radioactivity level by calculating the concentration of nuclides by designated date.

[0035] The above disposal radioactivity analysis unit (310) is intended to manage radioactive waste by analyzing the total radioactivity and the concentration of each nuclide for each disposal site of a stage 1 cave disposal facility or a stage 2 surface disposal facility. It calculates the concentration of each nuclide of the disposed radioactive waste on the inquiry date or a designated date using the decay formula, and adds them up to derive the total radioactivity on the inquiry date or the designated date. The total radioactivity on the inquiry date or the designated date is calculated using the half-life of each nuclide for the period from the nuclide evaluation date registered in the generator characterization information to the inquiry date or the designated date. Preferably, when the designated date is entered, the concentration of the nuclide and the radioactivity as of the designated date are analyzed and provided.

[0036] Here, the radioactivity is the sum of the specific radioactivity (Bq / g) of each nuclide in the drum multiplied by the drum contents weight (g), and the total radioactivity of the silo is the sum of the radioactivity of the drums disposed of in the silo. Therefore, the total radioactivity (N) on the inquiry date or the specified date A ) can be defined by the following mathematical equation 1.

[0037]

[0038] Here, N0 = radioactivity on the nuclide assessment date; T 1 / 2 = Half-life by nuclide; t = decay time (nuclide evaluation date - (inquiry date or designated date)).

[0039]

[0040] The above radioactive waste level classification unit (320) classifies the radioactivity level by calculating the radionuclide concentration by designated date in order to analyze whether the acceptance criteria are satisfied. It is preferable to configure it so that when a user inputs and uploads any generator characterization information template data, it analyzes whether the acceptance criteria are satisfied, displays the analysis results on the screen, and outputs the satisfaction results in Excel format. In addition, the radioactivity level classification is configured so that the radioactive waste inspection standard is calculated in accordance with the radioactivity level classification regulations presented in the Regulations on Radioactive Waste Classification and Self-Disposal Standards of the Nuclear Safety and Security Commission Notice, and the radioactive waste level is classified and displayed on the screen. It is preferable to configure the radioactive waste level to be classified into below the self-disposal allowable concentration, very low level, low level, and intermediate level and display the corresponding level for each radioactive waste.

[0041] FIG. 3 is a schematic diagram showing a process of classifying the contents of a packaging photograph in a statistical section (300) of a radioactive waste tracking management system according to one embodiment of the present invention.

[0042] As illustrated in FIG. 3, the statistical unit (300) can be configured to automatically classify the contents of radioactive waste based on big data of pre-stored packaging photos of radioactive waste. Specifically, the big data of pre-stored packaging photos of radioactive waste is processed by storing at least tens of thousands of existing packaging photos of radioactive waste and then classifying only photos in which the contents of the waste are a single item. Then, classification is performed using the packaging number and generator characteristic identification history information in the packaging photo file name, and folders are created and classified by the contents of the waste. During this process, waste can be classified into, for example, rubber, steel, plastic, or vinyl. Then, image learning and training are performed using a machine learning algorithm based on the packaging photos in which the contents of the waste are stored as a single item. For example, the machine learning algorithm can utilize an open-source machine learning system such as the Tensorflow framework. The contents of the radioactive waste to be classified are automatically classified and stored based on big data of the previously stored packaging photos of the radioactive waste.

[0043] The radioactive waste management status unit (400) is capable of querying and printing the status of the transport of the radioactive waste, and preferably, it is capable of managing transport history information using RFID (Radio Frequency IDentification) signals when disposal transport vehicles are transported out or brought in to the Stage 1 cavern disposal facility and Stage 2 surface disposal facility. Specifically, the RFID number system for the Stage 1 disposal transport vehicle and Stage 2 disposal transport vehicle can be defined, attached to the transport vehicle, and then managed through the system.

[0044] While preferred embodiments of the present invention have been described above, the present invention is not limited to the specific embodiments described above. That is, those skilled in the art will appreciate that numerous modifications and variations to the present invention can be made without departing from the spirit and scope of the appended claims. All such appropriate modifications and variations, including their equivalents, should be considered within the scope of the present invention.

Claims

1. History tracking management department (100) that tracks and manages all history information generated during the process of generating, transporting and disposing of radioactive waste; A document management department (200) that manages documents used in the process of entering historical information on the generation, transportation and disposal of the above radioactive waste; A statistical department (300) that provides statistics by item according to the step-by-step operation status of the above radioactive waste; and Includes a radioactive waste operation status unit (400) capable of searching and printing the transport status of the radioactive waste; The above document management unit (200) is capable of managing the distinction between the first stage cave disposal facility and the second stage surface disposal facility, and includes a disposal preparation document inquiry unit (210) that can search for documents by disposal transport number or disposal preparation document title; and a disposal warehouse disposal document inquiry unit (220) that can search for documents by radioactive waste package number or disposal warehouse disposal document title. The above statistical unit (300) is capable of classifying and managing the first-stage cave disposal facility and the second-stage surface disposal facility, and includes a disposal radioactivity analysis unit (310) that automatically classifies the contents of radioactive waste based on big data of previously stored packaging photos of radioactive waste and analyzes the total amount of radioactivity and the concentration of each radionuclide for each disposal site; and a radioactive waste level classification unit (320) that classifies the radioactivity level by calculating the concentration of each radionuclide for each designated date. The above disposal radioactivity analysis unit (310) calculates the total radioactivity (N) on the inquiry date or designated date by the following mathematical formula 1. A ) is a radioactive waste tracking management system characterized by producing a radioactive waste. Mathematical formula 1 Here, N0 is the radioactivity on the nuclide assessment date, and T 1 / 2 is the half-life of each nuclide, and t is the decay time (nuclide evaluation date - (inquiry date or designated date)).

2. In the first paragraph, the history tracking management unit (100) is characterized by including a disposal preparation inquiry unit (110) capable of separately managing a first-stage cave disposal facility and a second-stage surface disposal facility, and capable of inquiring about transportation and disposal schedule information of radioactive waste; and an automatic disposal registration unit (120) for radioactive waste identified by the disposal preparation inquiry unit (110).

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