JP5187896B2 - RFID-based waste management system - Google Patents

Description

The present invention relates to a technique for attaching a radio frequency identification (RFID) to each storage container containing waste and performing waste management using management information stored in the RFID, and more specifically, from a nuclear fuel handling facility. The present invention relates to an RFID waste management system in which generated low radioactive solid waste can be managed in a management area (site) by a portable information terminal using RFID management information attached to each waste. .

  Radioactive waste generated from the operation of nuclear facilities must be managed and disposed of safely and rationally. Low radioactive solid waste generated from nuclear fuel handling facilities, etc., individual waste management that stores the low radioactive solid waste in individual containers (carton box), drum can storage management that temporarily stores multiple individual containers in drum cans, It is managed by container storage management that stores individual containers for a plurality of drums in a container. In particular, nuclear materials such as uranium and plutonium adhere to low radioactive solid waste generated from plutonium conversion technology development facilities, etc., and they are subject to inspection and inspection by IAEA. Information such as the weight and nuclide composition of uranium and plutonium must be managed appropriately.

  In the past, paper-based management was performed. Specifically, a paper slip was drafted at the stage of individual waste management where low radioactive solid waste is stored in individual containers, and a paper slip was drafted at the stage of drum can storage management where multiple individual containers are temporarily stored in drums. However, the paper voucher based waste management is performed by drafting a paper voucher again by container storage management in which individual containers for the drum cans are collectively stored in a container, and filing them. However, with such a management method, it is possible to quickly find a target slip, etc. from a vast amount of paper slips where the necessary management information cannot be obtained at the necessary place (management area: site) when necessary. There was a problem that data could be lost due to forgetting or losing paper slip files. Therefore, in order to efficiently carry out waste management, it has been studied to digitize data and perform centralized management.

  By the way, in recent years, in various industries including the logistics industry, article distribution management using individual identification tags such as barcodes and RFIDs is performed. Also in the field of waste management, for example, there is a medical waste treatment system as disclosed in Patent Document 1. In general, these management systems are configured to attach an identification tag to an article to be managed, and to centrally manage the physical distribution status by an information processing device of a management center using the data. Specifically, the data of the identification tag read at each place is sent to the information processing apparatus via the Internet or the like, and the distribution status is managed by the information processing apparatus.

  These physical distribution management systems are generally very large, and are useful in applications where a wide variety of articles to be managed move over a wide range, such as between regions. However, wastes that are attached to nuclear fuel materials, particularly nuclear fuel material handling facilities, are handled as nuclear fuel materials, so they are under strict nuclear material protection, and there is strict control over information on waste. Required. Therefore, this information must be managed so that it cannot be easily accessed by an external third party. Since the conventional physical distribution management system as described above is performed via the public Internet or the like, a malicious third party can infiltrate the database via the Internet, and data can be seen or destroyed. It is difficult to use because there is a risk. In order to construct a system in which a third party is unlikely to be involved, it is necessary to provide a dedicated line, and the cost for that is enormous.

Japanese Patent Laid-Open No. 2003-319979

  The problem to be solved by the present invention is to make it possible to obtain management information of low radioactive solid waste generated from a nuclear fuel handling facility at a necessary place (managed area: on-site) when necessary. Another problem to be solved by the present invention is to minimize manual work so as not to cause an input error or a transcription error, and to secure a distance from the radioactive waste during management, and to carry out exposure accompanying the work. It is intended to reduce this.

  As described above, in the logistics industry and the like, the use of RFID is being promoted for individual identification, but there are almost no introduction examples of RFID in nuclear fuel handling facilities. The most important consideration when applying RFID to nuclear fuel handling facilities is durability in a radiation environment. However, although there are several examples of tests and reports by γ-ray irradiation alone (Co-60, etc.), in a nuclear fuel handling facility (actual field) where radiation (α-rays, β-rays, γ-rays, neutrons) is mixed There is no report. The inventors of the present invention first performed an operation check (read / write check) on γ (β) rays and neutron rays by attaching an RFID to actual waste having several different dose rates. As a result, it was confirmed that the 13.56 MHz RFID of passive type operates normally if the cumulative up to about 216 Sv (about 124 Gy). By the way, according to past statistics, the distribution of the surface dose rate of low radioactive solid waste generated from the plutonium conversion technology development facility, which is one of nuclear fuel handling facilities, is mostly less than 100 μSv / h (100 μSv / h). Most of the wastes below h are at the background level. Therefore, it was determined that the application of RFID to a nuclear fuel handling facility is sufficiently possible by the durability evaluation test under the radiation environment described above. The present invention has been completed based on such technical background and support.

The present invention relates to individual waste management in which low radioactive solid waste generated from a nuclear fuel handling facility is stored in individual containers, drum can storage management in which a plurality of individual containers are temporarily stored in drums, and a plurality of drums are stored in a container. In the low radioactive solid waste management system that implements container storage management and pays out of the facility in the container state, individual containers, drum cans, and individual container RFIDs attached to the containers, drum can RFID A personal digital assistant having a container RFID and a portable information terminal capable of transmitting and receiving data in a non-contact manner between the RFID, and the individual container RFID includes a unique ID of the individual container and an individual of waste stored in the individual container Information is written as individual container management information, and the drum can RFID is fixed to the drum can RFID. The ID and the individual container RFID data of each individual container stored in the drum can be read by a portable information terminal and written as drum can management information, and the container RFID has a unique ID of the container and each container stored in the container Drum can RFID data of a drum can is read by a portable information terminal and written as container management information. In the portable information terminal, individual container management information, drum can management information, and container management information are registered in its own database. In this way, an operation system is configured by the portable information terminal and each RFID, whereby individual containers, drums, and containers that are management target units are always integrated with management information stored in those RFIDs. Individual containers that are managed units and are managed units so that they move By reading RFID management information of a drum can and a container with a portable information terminal and referring to a database in the portable information terminal, the contents stored in the management target unit to which the RFID is attached are displayed on the portable information terminal. a waste management system according to RFID, characterized in that the enabling Viewing only.

The individual information written in the individual container RFID includes at least the content type of the waste, the weight, the surface, and the dose rate at a position 1 m away . Also, drums RFID and containers RFID, and the DB, as the management information required, even be desirable to write position information including location was stored respectively storage location or earlier.

  In container storage management, when individual containers temporarily stored in drums are stored together in a container, a combination of drums that satisfy the refilling conditions of content type, storage weight, and attached nuclear fuel substance amount is automatically extracted using DB. Let By storing the individual container temporarily stored in the drum can selected based on this result in the container, a container suitable for the refilling condition can be easily made.

In the waste management system using RFID according to the present invention, an RFID is attached to each storage container serving as a management target unit, and information necessary for management is stored in the RFID. Therefore, the management target waste is integrated with the management information. The data is managed in a distributed manner, and information necessary for management can be confirmed by reading RFID data with a portable information terminal in a management area (site) without accessing the DB. In addition to information necessary for management, incidental information related to the information is stored in the portable information terminal as a database, so that the management information is displayed or corrected when necessary at a necessary place. It becomes possible. As a result, the efficiency of waste management work and the improvement of management accuracy can be achieved. Moreover, since a network environment is not necessarily required, it is very effective from the viewpoint of information security. Furthermore, in the present invention, the non-contact (remote) recognition characteristic of RFID can be utilized, so that the distance between the container storing radioactive waste as a radiation source and the worker can be secured, and the exposure associated with the management work can be reduced. , Improve safety.

  As described above, in order to centrally manage waste management data that requires strict management in order to protect nuclear materials, it is necessary to isolate the data from a malicious third party. However, in order to isolate data, it is necessary to provide an independent dedicated line or the like, which requires enormous costs. In the present invention, only information necessary for waste management (not including information necessary for nuclear material protection) is given to RFID in units of waste, and information that should be managed separately for nuclear material protection is a separate DB. Can be viewed only from a portable information terminal synchronized with the managed DB distributed to each facility, thereby enabling efficient disposal while protecting data at low cost without providing a dedicated line Goods management can be implemented. By independently managing information in this way, it is possible to achieve both improvement in business efficiency and information security.

  Further, in the present invention, individual waste management for storing low radioactive solid waste generated from nuclear fuel handling facilities in individual containers, drum can storage management for storing a plurality of individual containers in drum cans, and individual containers for a plurality of drum cans. It is possible to automate most data entry work (writing to RFID and creating a database) in each process of container storage management and container storage management to be dispensed together. Can be minimized.

  Furthermore, in the present invention, when individual containers temporarily stored in drums are collectively stored in a container, a combination of drums that satisfy the refilling conditions of content type, stored weight, and attached nuclear fuel substance amount is automatically utilized using the DB. By extracting, an unskilled person can easily and quickly store the individual containers in the container in an optimal combination.

Figure 1 is a block diagram of a waste management system that definitive to the present invention. The present invention is a waste management system for storing and managing low radioactive solid waste generated from a nuclear fuel handling facility, and the low radioactive solid waste is managed in a state of being stored in a storage container 10. Here, the storage container means not only an individual container (carton box) that directly stores low radioactive solid waste, but also a drum can temporarily storing a plurality of them, or an individual container temporarily stored in a drum can. It is a general term for any container such as a container that is stored and managed.

  In this system, the RFID 12 attached to the storage container 10 as a management target unit, the portable information terminal 14 capable of transmitting and receiving data between the RFID 12 in a non-contact manner (remotely), and the portable information terminal 14 A backup PC 16 capable of DB synchronization is used. The storage container 10 in which the low radioactive solid waste is stored is placed in a management area (site), and an operator operates the portable information terminal 14 in the management area to read / write data of the RFID 12. The individual information of the waste stored in the storage container 10 is written in the RFID 12 by the portable information terminal 14 and registered in the DB in the portable information terminal 14. As a result, the storage container 10 that is a management target unit always moves integrally with the management information stored in the RFID 12, and the data is distributedly managed. Therefore, by reading the data of the RFID 12 with the portable information terminal 14 in the management area, information important for management can be immediately confirmed without accessing the DB. In addition, information necessary for management or related information can be obtained from a DB in the portable information terminal at a necessary place and when necessary, and can be displayed on the screen of the portable information terminal 14.

On the other hand, the backup PC 16 is installed in an unmanaged area (living room). Management information to be printed and output / saved is output from the printer 18 as a form. Although the DB in the portable information terminal 14 and the DB in the backup PC 16 are synchronized, the synchronization method may be arbitrary. However, when synchronization is performed using a LAN line or the like, a LAN line that is not disclosed to the outside is used as a LAN line in order to prevent involvement of a third party. here,
(1) DB synchronization using the wireless LAN in the management area and the in-facility LAN.
(2) DB synchronization using the cradle in the management area and the in-facility LAN.
(3) DB synchronization directly connected by a cradle in an unmanaged area without using an in-facility LAN.
3 examples are shown. Therefore, even if a network environment independent from the outside or a LAN environment is not maintained, the present system can be constructed relatively easily without making a huge capital investment. Further, by managing the access to the DB as a limited portable information terminal, information security can be enhanced.

Figure 2 is an illustration of a system flow definitive to the onset bright.
(A) RFID DB Registration Information necessary for RFID management (unique ID, waste information, etc.) is registered in the DB in the portable information terminal 14. Here, in order to prevent unauthorized rewriting of the DB by a third party, it is requested to input a password upon registration.
(B) RFID issuance A unique ID is assigned to a blank RFID and information necessary for management is written to the RFID 12.
(C) Affixing RFID The issued RFID 12 is affixed to the container 10 containing the low radioactive solid waste. As a result, the management object and its management information move together.
(D) Reading RFID RFID management information is read remotely using a portable information terminal.
(E) Citing data from DB If necessary, search / quote related detailed information (including information to be managed for nuclear material protection) based on the unique ID of the read RFID.
(F) Data display Information read from the RFID or searched / quoted information is displayed on the screen of the portable information terminal. As a result, information necessary for management and related information can be confirmed at a necessary place when necessary. In addition, even when the data needs to be corrected, it can be corrected on the spot. However, you will be required to enter a password when making corrections.
(G) DB update of correction data When correction / addition of data is performed, the DB in the portable information terminal is updated after correction, and is always in the latest state.
(H) Writing to RFID When data correction / addition is performed, the RFID is remotely written on the portable information terminal as necessary.
(I) Data transfer In order to make the DB in the portable information terminal 14 and the DB in the backup PC 16 the same, the data is transferred to the backup PC after the DB correction.
(J) Synchronization / update with DB of portable information terminal The data of the backup PC is updated based on the data transferred from the portable information terminal. As a result, the DB is multiplexed (mobile information terminal and backup PC), and the reliability can be improved.
(K) Form output Necessary management information is output from the printer 18 in a desired format.

In such a waste management system , the advantages of RFID can be fully utilized. First, since data can be read and written remotely, radiation exposure from the storage container can be reduced, and safety is improved. In addition, since it has a considerable storage capacity, storing not only the unique ID but also important management information, the storage container to be managed and the information necessary for management are always moved together, and the data Can be distributed. Moreover, information necessary for management can be obtained and displayed by reading the RFID of the storage container with a portable information terminal. Furthermore, in this system , since the portable information terminal has a DB, it is possible to refer to detailed information that cannot be stored in the RFID due to a limitation of storage capacity or the like when necessary at a necessary place.

FIG. 3 is a schematic diagram of a management flow in an embodiment of the system of the present invention, and FIG. 4 is a detailed flowchart thereof.

In the waste management system of this embodiment, individual waste management for storing low radioactive solid waste generated from nuclear fuel handling facilities in individual containers (carton boxes) 20, and six individual containers are collectively stored in a drum can 22. Drum can storage management, container storage management is performed in which individual containers for 11 drum cans (accordingly, a total of 66 individual containers) are collectively stored in the container 24. In the container discharge management, the containers are discharged out of the facility in the state of containers. The individual container 20, the drum can 22, and the container 24 serve as management target units, and the RFID 26 is attached to each. Then, the portable information terminal 28 is used to transmit / receive data to / from each RFID by a non-contact method (remotely) using radio waves, etc., and write management information to the RFID and read management information from the RFID.

  In the individual waste management, the individual information of the waste stored in the individual container is written in the individual container RFID by the portable information terminal and registered in the DB in the portable information terminal. More specifically, when low radioactive solid waste is generated, individual information (waste information) is input, an individual RFID is issued and registered in the DB, and the issued individual RFID is stored in the low radioactive solid waste. Affix to individual containers. The individual information of the waste written in the individual container RFID includes at least the content type, the weight, and the dose rate (on the surface and 1 m away) in addition to the unique ID of the individual container. In addition, related incidental information and information that must be managed for the protection of nuclear material are managed in the DB of the managed portable information terminal and backup PC.

  In the drum can storage management, when the individual container is temporarily stored in the drum can, the individual RFID data is read by the portable information terminal, the drum can management information is created, written in the drum can RFID, and automatically registered in the DB in the portable information terminal. More specifically, a drum can RFID is issued and registered in the DB. In addition to the unique ID of the drum, it includes management information for storage including a storage location and a storage position. The issued drum can RFID is attached to the drum can. Then, the drum RFID is read by the portable information terminal, and the individual RFID of the individual container stored in the drum can is read. In this way, after reading the drum can RFID of the drum can to be stored, the individual RFID of the individual container temporarily stored in the drum can is read to automatically create drum can management information reflecting the individual information of the individual container. It will be. This drum can management information is written in the drum can RFID and registered in the DB in the portable information terminal. If necessary, other accompanying information can be written in the DB of the portable information terminal. The individual container thus processed is stored in a drum can.

  Here, the drum can management information indicates the parent-child relationship between the drum can and a plurality of individual containers stored in the drum can, as in the BOM (Bill of Material) used in the field of production management. By including information, it is possible to prevent confusion with other RFIDs present in the vicinity.

  In container storage management, individual containers temporarily stored in drums are collectively stored in containers. At that time, the data of the drum RFID is read by the portable information terminal, container management information is created and written in the container RFID, and automatically registered in the DB in the portable information terminal. More specifically, a container RFID is issued and DB registration is performed. In addition to the unique ID of the container, management information for storage including a storage location and a storage position is also included. The issued container RFID is attached to the container. In this case as well, the container management information can be managed by including information representing the parent-child relationship between the container, the drum can and the individual container.

  By the way, when an individual container temporarily stored in a drum can is stored in a container, it is necessary to satisfy a container refill condition. Refill conditions include waste type (flammables, flame retardants, non-combustibles: they are further classified), total weight (how much kg you want to make or how many kg you want to store) And the amount of adhering nuclear fuel material (how many g of adhering nuclear fuel material you want to store, or how many g of adhering nuclear fuel material you want to store). A combination of drums that meet the refill conditions is extracted using DB. This extraction work previously required a lot of labor and experience. However, according to a program using a DB, it is possible to automatically select an optimal storage object simply by inputting a refill condition. Therefore, even an unskilled person can respond sufficiently.

  The individual container in the drum can thus selected is stored in the container. First, the container RFID is read by the portable information terminal, and the drum can RFID storing the individual container stored in the container is read. As a result, container management information reflecting the individual information of the individual containers is automatically created. This container management information is written in the container RFID and registered in the DB in the portable information terminal. If necessary, other ancillary information can also be written in the DB of the portable information terminal. The individual container thus processed is stored in the container.

  In container payout management, a payout target container is selected, the data of the container RFID is read by a portable information terminal, payout management information is created, written in the container RFID, and automatically registered in a DB in the portable information terminal for payout . By registering the container delivery destination, container management information, drum management information, and individual management information are registered in the delivered waste DB.

According to such a management system, it is possible to track and manage individual containers, drums, and containers, which are management target units, in the entire process from generation of low radioactive solid waste to dispensing. In addition, the individual containers, drums, and containers are always moved together with the management information stored in their RFID, so that the data is managed in a distributed manner, and the RFID data is read by the portable information terminal. Information necessary for management can be confirmed instantly. Further, even within a management area (site), detailed management information can be obtained immediately from the DB in the portable information terminal, and can be displayed and changed.

  By the way, since the container management information is stored in the RFID of the dispensed container, and the waste management information is also stored in the RFID of the individual container stored therein, the RFID is discarded afterwards. It can also be used for automation of material processing.

Block diagram of a waste management system that definitive in this onset Akira. Illustration of a definitive system flow to the onset Akira. The schematic diagram of the management flow in one Example of this invention. The detailed flowchart.

Explanation of symbols

10 Storage container 12 RFID
14 Mobile information terminal 16 Backup PC
18 Printer

Claims (3)

Individual waste management in which low radioactive solid waste generated from nuclear fuel handling facilities is stored in individual containers, drum can storage management in which multiple individual containers are temporarily stored in drums, and container storage management in which multiple drums are stored together in a container In the low radioactive solid waste management system for carrying out and discharging out of the facility in the container state,
An individual container that is a unit to be managed, a drum can, an individual container RFID attached to each container, a drum can RFID, a container RFID, and a portable information terminal capable of transmitting and receiving data in a non-contact manner between these RFIDs,
In the individual container RFID, a unique ID of the individual container and individual information of waste stored in the individual container are written as individual container management information, and in the drum can RFID, the unique ID of the drum can and stored in the drum can The individual container RFID data of each individual container is read by the portable information terminal and written as the drum can management information, and the container RFID includes the unique ID of the container and the drum can RFID data of each drum can stored in the container Is read by the portable information terminal and written as container management information, and the portable information terminal stores the individual container management information, drum can management information, and container management information in its own database. An operation system is composed of the information terminal and each RFID,
As a result, the individual containers, drums, and containers that are the management target units are distributed and managed so that the management information stored in their RFIDs is always moved together. By reading RFID management information of a drum can and a container with a portable information terminal and referring to a database in the portable information terminal, the contents stored in the management target unit to which the RFID is attached are displayed on the portable information terminal. waste management system according to RFID, characterized in that the enabling Viewing only. The individual containers to the individual information to be written into the RFID, the content type of the waste even without low, weight, surface and waste management system according RFID of claim 1, wherein the dose rate is contained in 1m away. In container storage management for collectively storing a plurality of drum cans in a container, a combination of drum cans satisfying the necessary refilling requirements of the waste content type, storage weight, and attached nuclear fuel substance amount using the database of the portable information terminal. The waste management system using RFID according to claim 2, which is automatically extracted.

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