JP2009022894A - Method for discriminating and treating waste material and apparatus for discriminating and treating waste material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable discrimination treatment of hazardous waste material, which should be performed in a closed apparatus, to be carried out with expedition and accuracy by exhibiting rapidly and in an easy-to-understand way a specific material part of the waste material. <P>SOLUTION: The treatment method is equipped with the steps of: photographing transilluminating image data by irradiating a subject material to be examined with a radioactive ray; specifying an individual number of a container for the subject material and a photographing direction; automatically recognizing a material part to be removed from the subject material from the transilluminating image data; storing simultaneously the photographing direction and a measured result of the subject material; and carrying out decomposition treatment of the subject material while accordingly calling and referring to the measured result corresponding to the individual number of the subject material. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a waste discrimination processing method and a waste discrimination processing apparatus for detecting and discriminating a specific material portion in waste processing including hazardous substances.

  Volume reduction is required for hazardous waste including radioactive waste and PCB generated at facilities using nuclear fuel. Since the treatment method for volume reduction differs depending on the material, it is necessary to discriminate the waste contained in the container for each material. However, if it contains harmful substances, it is essential to work with a sealing device such as a glove box. It is. In addition, there are many composite materials composed of a plurality of materials, and operations such as completely disassembling these materials and taking out specific materials are extremely complicated and dangerous.

  For example, radioactive waste generated in a nuclear power plant or the like may be stored as it is, or may be solidified and stored with concrete after melting or volume reduction. In order to reduce storage space and to facilitate storage, when radioactive waste is melted together with drums, for example, plasma melting, the worker opens the drums, takes out the radioactive waste in the drums, and separates them. To do.

  In particular, since aluminum and lead are not suitable for melting processing, it is necessary to store them separately without melting processing. This is because when aluminum is melted and hardened with concrete, moisture in the concrete reacts with aluminum, and hydrogen is generated, which may damage the melting furnace.

  On the other hand, when lead is melted, toxic gas is generated, which is not preferable for preventing pollution. However, in general, lead is widely used as a radiation shield in the nuclear field, and aluminum is often included as a composite material such as a filter. If these materials are detected quickly and attention is given to the worker, the efficiency of the sorting work can be improved, and the radiation exposure of the worker can be reduced.

  In addition, in the disposal of PCB-containing wastes, in principle, document screening and visual inspection are the main components. However, if the contents and display differ, and if unprocessable materials are mixed in, it should be promptly performed. It is difficult to discover.

  Therefore, in the decomposition and discrimination processing of these hazardous wastes, a technique capable of non-destructively seeing through the inside and specifying the material is extremely effective.

  As an example of a conventional waste sorting method, a metal detector separates whether or not there is metal in the waste, and an X-ray inspection device determines whether the shape of the metal is atypical or regular. A method of sorting has been proposed (see, for example, Patent Document 1). In addition, a method has been proposed in which a component of radioactive waste moving on a roller conveyor is obtained by combining a capture γ-ray analyzer and a fluorescent X-ray analyzer (see, for example, Patent Document 2).

  However, when using a metal detection device and an X-ray fluorescence device, it is essential to open and disassemble the specimen, and it is applicable to the inspection of composite materials containing a large amount of harmful substances or complicated structures. Is difficult.

  In addition, a method for identifying a material and specifying a place has been proposed (for example, Patent Document 3). In this method, the X-ray fluoroscopic image gradation value or its function is detected using the tube voltage of the X-ray tube as a parameter, and this is used as the reference gradation for each material. This reference gradation is also obtained by calculation and registered as a data table. Then, the material is specified by measuring the object and comparing it with a reference gradation previously stored in a database. In particular, the feature of the method is that identification of lead and aluminum is simpler than that of X-ray CT.

  However, in this method, when different materials are overlapped in the perspective direction, it is difficult to determine from the reference function for each material, and it is difficult to determine similarly when the thickness is different from the reference function. There is. Furthermore, in this proposal, the X-ray tube voltage (same as energy, but not exactly equivalent because it has a distribution) is used as a parameter. Judgment is being made.

  When the tube voltage is used as a parameter, discriminable luminance data cannot be obtained unless the tube current is used as a parameter at the same time. For example, if the tube current of the data of 300 kV and the tube current of 100 kV are not increased, the same brightness is not obtained unless the tube current of 100 kV is increased.

  Therefore, it is necessary to have a huge amount of data for each material as a table, and in order to make an accurate determination, the measurement conditions of the subject must be the same as the conditions obtained in the database.

However, when the object to be measured is waste, the material and size of the contents vary, and it is not always possible to shoot under the same conditions. For this reason. There is a problem that the database must be measured again each time the measurement conditions are changed. Therefore, in this method, it is difficult to accurately obtain spatial information and material information when the measurement target has a complicated shape.
JP-A-6-273588 JP-A-7-209493 Japanese Patent No. 3193665 Original title: Development of multi-color scintillator based X-ray image intensifier Nittoh et al. Toshiba Corporation, Japan. Source: Nuclear Instruments & Methods in Physics Research A535 / 3 P 686-691 (2004)

  In the treatment of waste containing harmful substances, it is necessary to carry out through a sealing device such as a glove box. Therefore, in that case, it is important to display not only information on what is inserted inside but also information on what is inserted in what place and in what amount quickly and accurately.

  The metal inspection apparatus and the fluorescent X-ray apparatus in the prior art are not necessarily suitable for inspection of harmful substances because no consideration is given to unopening. The X-ray fluoroscopic apparatus is an effective method for confirming the storage state, but the material cannot be specified as it is, and there is a problem that information changes when the subject rotates.

  On the other hand, an X-ray CT method is known as a method for nondestructively inspecting internal materials and structures. In the X-ray CT method, the X-ray absorption ratio of each waste, that is, the X-ray absorption coefficient is obtained, and the thickness of each waste is obtained, whereby the material of each waste can be determined. However, this method requires enormous time and cost for data collection, image reconstruction calculation, display, and the like, and is not suitable for waste inspection that requires rapidity.

  The present invention has been made in view of such circumstances, and by displaying a specific material portion in the waste quickly and in an easy-to-understand manner, the hazardous waste discrimination processing that must be performed in the sealing device can be performed quickly and easily. An object of the present invention is to provide a waste discrimination processing method and a waste discrimination processing apparatus that can be accurately performed.

  In order to achieve the above-mentioned object, in the present invention, a step of irradiating a subject, which is a waste subject to discrimination processing, to irradiate a fluoroscopic image, an individual number of a subject container that contains the subject, and photographing A step of identifying a direction, a step of recognizing a material portion to be removed from the subject as fluoroscopic image data, a step of simultaneously storing an imaging direction of the subject and measurement result data, and an individual of the subject And a step of decomposing the specimen while calling and referring to the measurement result corresponding to the number.

  Further, in the present invention, a tag that indicates the individual number and angle of the subject by being attached to the subject, a device that reads and recognizes the tag, a rotary table that rotates the subject, a radiation source, a subject, A sensor for detecting radiation placed opposite to each other with a rotation table interposed therebetween, a signal processing device for converting a signal of the sensor into an image, an image arithmetic processing device for performing arithmetic processing on a density value in the obtained image, and arithmetic A storage device for storing processed results as data, and a display for reading a tag attached to the subject when disassembling the subject in the sealed device and displaying a measurement result corresponding to the individual number of the subject There is provided a waste discrimination processing apparatus characterized by comprising an apparatus and an angle adjustment device for adjusting an angle by rotating a subject in a direction corresponding to a measurement result.

  According to the present invention, the specific material portion in the waste is displayed quickly and in an easy-to-understand manner, so that the hazardous waste discrimination processing that must be performed in the sealing device can be performed quickly and accurately.

  Hereinafter, embodiments of a waste discrimination processing method and a waste discrimination processing apparatus according to the present invention will be described with reference to the drawings.

[First Embodiment (FIGS. 1 to 5)]
In the present embodiment, a step of irradiating a subject that is a waste subject to discrimination processing to shoot a fluoroscopic image, a step of specifying an individual number and a photographing direction of a subject container that contains the subject, Recall and refer to the process of recognizing the material portion to be removed from the subject as fluoroscopic image data, the step of simultaneously storing the imaging direction of the subject and the measurement result data, and the measurement result corresponding to the individual number of the subject. A waste discrimination processing method including a process for decomposing a subject will be described.

  In the present embodiment, as an apparatus for carrying out the above method, a tag that indicates the individual number and angle of the subject by being attached to the subject, a device that reads and recognizes the tag, and a rotary table that rotates the subject. A radiation source, a sensor for detecting radiation that is placed opposite to the subject and the rotation table, a signal processing device that converts the sensor signal into an image, and an arithmetic process on the density value in the obtained image An image arithmetic processing device to be performed, a storage device for storing the result of the arithmetic processing as data, and a tag attached to the subject when the subject is disassembled in the sealing device are read and corresponding to the individual number of the subject Provided is a waste discrimination processing device including a display device that displays a measurement result and an angle adjustment device that performs angle adjustment by rotating a subject in a direction corresponding to the measurement result.

  In the present embodiment, as a step of photographing the fluoroscopic image data, it is desirable that the subject is photographed through the sealed container, transported in a sealed state, and decomposed in the sealed device.

  In addition, it is desirable to use a plurality of mechanisms for decomposing and classify the subject according to the presence / absence of the material to be removed or the type and shape of the material to be removed.

  FIG. 1 is an explanatory diagram schematically showing the overall configuration of a waste discrimination processing apparatus according to a first embodiment of the present invention.

  As shown in FIG. 1, the waste discrimination processing apparatus 101 according to the present embodiment includes a waste transport cart 1, a subject 2 including a sealed container that can be transported by the waste transport cart 1, and the subject 2. An identification tag mounting device 3 for mounting a tag to be described later, a belt conveyor 4 (4a... 4h) for transporting the subject 2 to a decomposition processing line, an X-ray source capable of freely changing X-ray energy, and transmitted X-rays. And an X-ray transmission image photographing device 5 having a sensor or the like for receiving light.

  Further, a console (X-ray transmission image capturing device controller) 6 of the X-ray transmission image capturing device 5, a data processing device (signal processing and storage device) 7 for processing and storing the measured image data, and data. LAN cables 8a, 8b,... 8e for transferring to another location, display devices (monitors) 9a, 9b for displaying data, and a line for opening and disassembling the subject (waste opening process line) 10 (10a, 10b) , 10c).

  Since the subject 2 contains hazardous materials, the subject 2 is carried by the waste transport cart 1. Subsequently, a tag (number tag), which will be described later, is mounted in the identification tag mounting device 3 in order to identify an individual for each container in a sealed space. Subsequent measurement and transportation to the disassembly processing line is performed by the belt conveyor 4 (4a... 4h). A worker M is arranged on the line.

  The subject 2 carried on the belt conveyor 4 is photographed with a transmission image by an X-ray transmission image device 5. The X-ray transmission image photographing apparatus 5 includes an angle changing mechanism 5a that can change the photographing angle, and is configured to be able to photograph by freely changing the angle. In addition, about the radiation to irradiate, besides a X-ray, a gamma ray, a neutron beam, etc. can also be applied.

  The photographed data is sent to the data processing device 7, where data processing is performed, and the material portion to be removed is extracted by image processing, and is stored together with the photographing angle and the individual information of the subject.

  Based on the result of the image processing, the subject 2 is selected such that it does not need to be opened, contains aluminum, or may contain lead, and is disposed of separately by the belt conveyors 4c, 4d, and 4e. It is carried to the material processing line.

  For example, unopened items are sent to the unnecessary line 10a, and those containing aluminum are taken out from the glove box through the processing line 10b. In addition, the lead containing lead is taken out in the processing line 10c, and the sorted wastes 11a, 11b, 12a, 12b, 13a, and 13b are finally repackaged, and each of the following processing (reduction) Etc.).

  FIGS. 2A to 2D show a state in which the subject 2 wears the individual identification tags 14a and 14b. The identification tags 14a and 14b are made of a material that hardly transmits X-rays, such as lead and tungsten, and are number-marked. For example, the identification tags 14a and 14b are 0 degrees (FIGS. 2A and 2B) in plan view. It is attached so that the angle can be distinguished at two places such as 90 degrees (FIGS. 2C and 2D).

  FIGS. 3A and 3B are views showing the necessity of recognizing an angle in an X-ray transmission image. That is, in the X-ray transmission image, FIG. 3A shows an image S1 corresponding to FIG. 2A, and FIG. 3B shows an image S2 corresponding to FIG. As shown in these figures, since the X-ray transmission image is displayed in black and white shading as a result of integration in the X-ray irradiation direction, for example, it is shown in FIGS. 3 (a) and 3 (b). As described above, there is a possibility that the image will be completely different just by being rotated by 90 degrees, and the contents are difficult to recognize compared to a normal visible image.

  Therefore, it is very difficult to find something through the glove box while looking at a transparent image from which direction the image was taken. Moreover, since the wastes etc. which entered the container are similar in appearance, it is difficult to distinguish the data at first glance, and there is a possibility that erroneous data is displayed. Therefore, as shown in FIG. 4, it is desirable that the line 10 to be opened can automatically adjust the direction of the subject 2 in accordance with the individual identification number tags 14c and 14d in advance.

  FIG. 4 shows the line 10 to be opened in more detail. The opening process line 10 is a sealing device such as a glove box, for example, and a sensor 15 for reading the number tags 14c and 14d is provided inside.

  There are various methods for reading the number tags 14c and 14d. The simplest method is, for example, a method of reading with a camera or the like and identifying by image processing such as pattern recognition. When the number is identified by the sensor 15, the corresponding waste data is displayed on the display device 9. At the same time, the table 17 is rotated in accordance with the photographing direction of the waste and adjusted to an appropriate angle. When it is desired to see other angle information, when the operator M sends a command by the terminal controller 16, an image S3 of another angle is displayed and the table 17 is also rotated to an angle corresponding thereto.

  FIG. 5 is a flowchart showing the above processing flow. First, an individual number tag is attached to a subject (S1), and the subject is installed in an X-ray fluoroscopic imaging apparatus (S2). The shooting direction is confirmed (S3), and shooting is performed (S4). After photographing, the sample table is rotated 90 degrees around the vertical axis (S5) and photographed again (S6). Next, the material is identified (S7), and the presence or absence of a removal target is determined (S8). If there is no object to be removed by this determination (NO), the incineration process is performed without opening (S9), and if there is an object to be removed (YES), it is transferred to the decomposition mechanism (S10).

  The decomposition mechanism confirms the direction of the subject in two directions (S11), and opens to take out a specific material (S12). After the material identification (S7), the data is recorded in the database (S13), and then opened to take out the specific material (S12). Then, repacking etc. are performed (S14) and it is complete | finished.

  Through the above process, it is possible to open and disassemble the waste while checking the contents of the waste, and the substance to be removed can be quickly taken out, leading to improved work efficiency and avoiding dangers such as exposure. It becomes possible to do.

[Second Embodiment]
FIG. 6 shows a second embodiment of the present invention. In the present embodiment, waste information is extracted from the fluoroscopic image data, and a waste discrimination process for determining and displaying a portion to be removed depending on whether or not a predetermined density per unit area exceeds a predetermined range. A method will be described.

  The X-ray transmission image is shown as a black and white grayscale image as shown in FIG. For example, when the X-ray sensor is a combination of an X-ray image intensifier and a CCD camera, the one that does not transmit X-rays appears black. Therefore, a material having high X-ray absorption such as lead is black, and a material having low absorption such as aluminum is displayed in white.

  Here, for example, a method for detecting lead will be described. First, a transmission image is taken using a standard sample, and an average concentration value when a certain amount or more of lead is present per unit area is obtained. Subsequently, FIG. 6 shows a transmission image of the subject taken using the same X-ray energy.

  In FIG. 6, when an image is divided into unit areas, for example, regions 18a, 18b, and 18c are shown. Therefore, the average concentration is calculated for each region, compared with the average concentration value of lead obtained in advance, and if it exceeds it, it is determined that it contains lead.

  For example, in FIG. 6, if the area 18b exceeds the threshold value, the display device 9 in FIGS. 1 and 4 highlights the area 18b by surrounding it with a frame or coloring it to alert the worker.

  According to the present embodiment, when the material to be removed is a material with low X-ray transmittance such as lead, it can be taken out quickly, so that the work efficiency can be improved and dangers such as exposure can be avoided. Become.

[Third Embodiment]
FIG. 7 shows a third embodiment of the present invention. In the present embodiment, a standard sample in a fluoroscopic image obtained with the first energy is provided, which includes a step of photographing a standard sample composed of a material to be removed and a subject at the same time and changing two or more kinds of radiation energy. The specimen fluoroscopy is performed by adjusting the entire second image so that the density value of the sample portion is substantially the same in the transmission image obtained with the second energy, and taking the difference between the images. A waste discrimination processing method for creating an image in which a material portion to be removed from an image is created and comparing the original image with a portion to be removed will be described.

For example, the transmission of X-rays through a substance is defined as I ₀ when the intensity before entering the substance and I after the transmission.
[Equation 1]
I = I ₀ e ^−μρt (1)
It is represented by Here, μ (cm ² / g) is a mass energy absorption coefficient depending on the energy of X-ray, ρ (g / cm ³ ) is the density of the transmitted material, and t (cm) is transmitted by X (γ) ray. The thickness is shown. In the case of γ-rays, energy is often expressed in a single color, so the mass energy absorption coefficient μ can be given by a relatively calculation as the total attenuation coefficient, but in the case of X-rays, the X-ray tube used Since the energy characteristics are not monochromatic and a wide range of energy resolution has a low spread spectrum (spread from a low energy to a high energy), it is not easily given by calculation, and is obtained as an effective energy by experiments or the like. Assuming the case of measuring substances having the same thickness t, the transmission intensity depends on the density of the substance and the mass energy absorption coefficient.

The mass energy absorption coefficient μ varies depending on the energy of X-rays to be irradiated. For example, in the case of Al, the mass energy absorption coefficient with respect to X-ray energy of 100 keV is μ _Al = 0.171 (cm ² / g), and the mass energy absorption coefficient with respect to X-ray energy of 200 keV is μ _Al = 0.122 (cm ² / G), the smaller the X-ray energy, the easier the transmission, as shown in the equation (1). The relationship between the X-ray energy and the mass energy absorption coefficient varies depending on the material.

  An image 1 in FIG. 7A and an image 2 in FIG. 7B show X-ray transmission images when images are taken at an X-ray tube voltage of 100 kV and 150 kV, respectively. The fact that the X-ray tube voltages are different means that the energy of the irradiated X-rays is effectively different. Therefore, as described above, when the tube voltage is different, the mass energy absorption coefficient is also changed, so that the X-ray absorption characteristics with respect to the thickness of the material are different. Here, the contents 21 and 22 are made of the same material, and the contents 23 are made of different materials. Here, it is assumed that the same material as that of the standard sample 20 photographed at the same time is to be detected, and the case where the contents 21 and 22 are detected will be described.

  First, when the thicknesses of the contents 21 and the contents 22 are equal, an image in which the contents 21 and 22 such as the image 3 are deleted is obtained by simply subtracting the images 1 and 2. By comparing the image 3 shown in FIG. 7 (d) with the image 1 shown in FIG. 7 (a) or the image 2 shown in FIG. It turns out that it is a detection target.

  Here, in the waste inspection, the thickness of the contents is not always constant. For example, if the image 21 and the image 22 are made of the same material, but the thickness is significantly different, the image 21 and the image 22 cannot be erased by simply reducing the thickness. In this case, the overall density is adjusted so that the density of the standard sample 20 is the same between the image 1 and the image 2, and the image 2a of FIG.

  At this time, for example, the content 21 and the content 22 are made of the same material as that of the sample 20, so that the amount of change in brightness is the same, and the luminance is the same as 21 a and 22 a in the image 1. Therefore, by taking the difference between the converted image 2a and the image 1, the image 3 of FIG. 7D in which only the same material as the sample 20 is erased is obtained. Since the contents 23c are made of different materials, the luminance does not match even if the same conversion is performed, and the contents 23c are not deleted from the difference image.

  By performing such processing, an image in which only the same material as that of the standard sample 20 is erased can be obtained. In this method, even when the contents 22 and the contents 23 overlap each other, since the trace of the overlapping portion remains on the image, it can be determined that the two materials are overlapped.

  An object to be detected can be found by comparing the obtained image with the original image 1 or image 2. Therefore, in the display device 9 in FIGS. 1 and 4, the image 1 or the image 2 and the image 3 in FIG. 7 are compared and displayed, and the portion erased in the image 3 is highlighted by being surrounded by a frame or colored. To alert workers.

  According to the present embodiment, the material to be removed can be quickly identified and removed, leading to an improvement in work efficiency and avoiding dangers such as exposure.

[Fourth Embodiment]
8 and 9 show a fourth embodiment of the present invention. In the present embodiment, a standard sample portion in a fluoroscopic image obtained with the first energy is provided, which includes a step of photographing a standard sample made of a known material and the subject at the same time and changing two or more types of radiation energy. The standard sample portion is obtained by performing luminance adjustment on the entire second image so that the density value of the second image becomes substantially the same in the transmission image obtained with the second energy, and taking the difference between the images. Discriminating waste as a part that should be removed by determining whether the density value of the unknown material part in the obtained image is a positive value or a negative value in the obtained image A method will be described.

  8A and 8B show experimentally obtained X-ray absorption characteristics of lead having a thickness of 1 to 5 mm, iron having a thickness of 20 to 40 mm, and aluminum having a thickness of 60 to 100 mm. It is shown. (A) was taken at an X-ray tube voltage of 445 kV, and (b) was taken at 200 kV. As shown in the figure, since the three samples exist in substantially the same concentration region, it is difficult to distinguish the material difference at a glance.

  Here, paying attention to the iron in each graph, a function is calculated so that the concentration at each thickness of iron is the same, and applied to the data of (a), for example. When the data (b) is subtracted from the applied data, the result is as shown in FIG. Since the concentration is adjusted so that the thickness of iron is the same, the iron data in FIG. 9 is 0 at any thickness.

  At this time, lead having a larger atomic number than iron has a positive value, and aluminum having a smaller atomic number than iron has a negative value. This is because the ratio of the change in the mass absorption coefficient with respect to the X-ray energy becomes larger as the element having a larger atomic number such as Pb> Fe> Al.

  Utilizing this fact, the display device 9 shown in FIGS. 1 and 4 alerts the operator by color-coding the positive value portion and the negative value portion.

  According to the present embodiment, the material to be removed can be quickly identified and removed, leading to an improvement in work efficiency and avoiding dangers such as exposure.

[Fifth Embodiment]
FIG. 10 shows a fifth embodiment of the present invention. In this embodiment, a combination of a scintillator that emits color light and a color camera, and a mechanism capable of simultaneously capturing a plurality of images are applied as a sensor that captures a transmission image, and a plurality of types of standard samples are provided for simultaneous imaging. A waste discrimination processing apparatus that displays a plurality of materials by color by performing luminance adjustment for erasing different materials for each color component of the obtained transmission image will be described.

  For example, it is assumed that the subject is a steel can containing contents made of Al, SUS, etc., and an Al step gauge is simultaneously photographed as a standard sample. A color X-ray image intensifier (see Non-Patent Document 1) is used as the sensor.

  The color image intensifier has three components: red, green, and blue. Therefore, an image from which a specific material as described in the third embodiment is deleted and a normal transmission image can be taken simultaneously. For example, here, aluminum is used as an image to be erased, and an image in which aluminum is erased with a red component is created. Subsequently, for the green component, iron is used as an image to be erased, and an image in which iron is erased is created.

  By superimposing and displaying the two components simultaneously, an image in which aluminum and iron (SUS) are color-coded as shown in FIG. 10 can be obtained instantaneously.

  According to the present embodiment, the material to be removed can be quickly identified and removed, leading to an improvement in work efficiency and avoiding dangers such as exposure.

1 is a basic configuration diagram of a waste discrimination processing apparatus according to a first embodiment of the present invention. (A)-(d) is the installation figure of the tag which identifies the subject by 1st Embodiment of this invention. (A), (b) is a radiographic image radiograph of a subject according to the first embodiment of the present invention. The lineblock diagram of the line which unseals the subject by a 1st embodiment of the present invention. The flowchart which shows the flow of the waste discrimination processing method by 1st Embodiment of this invention. Explanatory drawing in the case of detecting a material from the X-ray transmission image density of the subject by 2nd Embodiment of this invention. (A)-(d) is explanatory drawing in the case of erase | eliminating a specific material from the X-ray transmission image of the subject by 3rd Embodiment of this invention. (A), (b) is a X-ray-absorption characteristic measurement figure of lead, iron, and aluminum by a 4th embodiment of the present invention. The operation figure which eliminated iron from the X-ray absorption characteristic of lead, iron, and aluminum by a 4th embodiment of the present invention. The illustration of aluminum and iron according to a fifth embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste conveyance cart 2 Subject 3 Identification tag mounting apparatus 4a-4h Belt conveyor 5 X-ray transmission imaging device 6 X-ray transmission imaging device controller 7 Signal processing and storage device 8a-8e LAN cables 9, 9a, 9b Monitor 10, 10a, 10b, 10c Waste opening process line 11a, 11b Unopened waste 12a, 12b Repacked waste 13a, 13b Repacked waste 14a-14d Subject individual identification tag 15 Identification tag read Sensor 16 Terminal controller 17 Rotary tables 18a, 18b, 18c Divided regions 19a, 19b, 19c Subject portions 20a, 20b, 20c in X-ray transmission images Standard sample portions 21a, 21b, 21c in X-ray transmission images Contents 22a, 22b, 22c contained in the specimen Contents to be included 23a, 23b, 23c Contents to be included in the subject

Claims (8)

From the subject, a step of irradiating a subject, which is a waste subject to discrimination processing, to irradiate a radiographic image, a step of identifying an individual number and a photographing direction of a subject container containing the subject, Recognizing the material portion to be removed as fluoroscopic image data, simultaneously storing the imaging direction of the subject and the measurement result data, and calling and referring to the measurement result corresponding to the individual number of the subject And a step of decomposing the specimen. The waste discrimination processing method according to claim 1, wherein, as the step of capturing the fluoroscopic image data, the subject is imaged through a sealed container, transported in a sealed state, and decomposed in a sealed device. Processing method. 2. The waste discrimination processing method according to claim 1, wherein a plurality of the decomposing mechanisms are used, and the subject is classified according to the presence / absence of the material to be removed or the type and shape of the material to be removed. Item discrimination processing method. The waste discrimination processing method according to claim 1, wherein concentration information is extracted from the fluoroscopic image data, a determination is made as to whether or not a predetermined concentration per unit area exceeds a predetermined range, and a portion to be removed is determined. Waste discrimination processing method to set and display. The waste discrimination processing method according to claim 1, further comprising the step of imaging a standard sample made of a material to be removed and the subject at the same time and changing two or more kinds of radiation energy. The entire second image is adjusted so that the density value of the standard sample portion in the fluoroscopic image obtained in step 2 is substantially the same in the transmission image obtained with the second energy, and the difference between these images is applied. A waste discrimination processing method for creating an image in which a material portion to be removed from a subject fluoroscopic image is deleted and determining a portion to be removed by comparing with an original image. The waste discrimination processing method according to claim 1, further comprising a step of photographing a standard sample made of a known material and the subject at the same time and changing two or more kinds of radiation energy. The brightness adjustment is performed on the entire second image so that the density value of the standard sample portion in the fluoroscopic image is substantially the same in the transmission image obtained with the second energy, and the difference between these images is obtained. Thus, the density value of the standard sample part is set to zero, and it is determined whether the density value of the unknown material part in the obtained image becomes a positive value or a negative value, and either one of them should be removed. Waste discrimination treatment method. A tag that indicates the individual number and angle of the subject by attaching it to the subject, a device that reads and recognizes the tag, a rotary table that rotates the subject, a radiation source, and the subject and the rotary table that face each other A sensor for detecting radiation, a signal processing device for converting a signal of the sensor into an image, an image arithmetic processing device for performing arithmetic processing on a density value in the obtained image, and a result of the arithmetic processing as data As a storage device, a display device for reading a tag attached to the subject when disassembling the subject in a sealed device, and displaying a measurement result corresponding to the individual number of the subject, and a measurement result A waste discrimination processing apparatus comprising: an angle adjustment device that adjusts an angle by rotating a subject in a corresponding direction. 8. The waste discrimination processing apparatus according to claim 7, further comprising: a combination of a scintillator that emits color light and a color camera as a sensor that captures the transmission image; and a mechanism that can simultaneously capture a plurality of images. A waste discrimination processing apparatus that displays a plurality of materials by color by performing brightness adjustment for erasing different materials for each color component of the obtained transmission image by simultaneously photographing a plurality of types.

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