JP2010048787A - Device, kit, and method for collecting pcb analytical sample, and method for managing pcb analytical sample - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and method for collecting a PCB analytical sample, capable of safely and easily collecting the PCB analytical sample from an electric device, and a management method capable of preventing confusion of samples after collection. <P>SOLUTION: The method for collecting the PCB analytical sample uses the device for collecting the PCB analytical sample 1, which has a vacuum vessel 2 having an elastic cap 2b, a vacuum vessel holder 3 having a hollow needle 5 at the bottom, and a capillary 4 to be connected to the hollow needle 5. The capillary 4 is inserted into a gap in the electric device 10 having an insulation oil 14, a PCB analytical object, the capillary 4 is connected to the hollow needle 5, and the hollow needle 5 pierces the cap 2b of the vacuum vessel 2 in the vacuum vessel holder 3 to collect the insulation oil 14 from inside the electric device 10 into the vacuum vessel 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to collecting and managing insulating oil in electrical equipment such as a transformer as a sample for PCB analysis.

PCB (polychlorinated biphenyl) is one of the persistent organic pollutants. These are likely to remain in the environment, are fat-soluble, have a high bioconcentration rate, are semi-volatile, move via the atmosphere, have been confirmed to be harmful to human health and the environment, and have a wide range of water, sediment, and organisms. It remains in the environment. There are 209 types of isomers in PCB, and toxicity varies depending on the number and position of chlorine. Coplana PCB is as toxic as dioxins.

PCB, once used as an insulating oil for electrical equipment such as transformers as a useful substance, has been discontinued and released since it became clear in Japan that it had an impact on the living body and the environment due to the Kanemi oil symptom incident. Use in system applications or new use is prohibited. For closed system applications, the PCB for the heat transfer medium was subsequently recovered, but the electrical equipment in which the PCB was used is still used or stored.

These electrical devices are stored after PCB disposal, but not all of these electrical devices contain PCBs above the reference value. Rather, it is expected that many of the stored electrical devices do not meet the standard value that requires PCB disassembly processing. Therefore, it has been proposed to analyze the PCB concentration in advance, instead of subjecting all of these electrical devices to PCB decomposition.

The PCB concentration analysis method is described in, for example, Patent Document 1. However, a safe and simple method for collecting a sample for PCB analysis has not been established. After all, bolts such as transformers are removed, the lid is opened, and insulation oil is sampled with a pipette or the like.
Japanese Patent Laid-Open No. 2004-61488

In a conventional sampling method, there is a possibility that an insulating oil that may be contaminated with PCB may leak into the environment. It takes time to collect and it is difficult to obtain a sample from a large amount of electrical equipment in a short time. In addition, some of the target electrical devices include transformers that are in use, and it is necessary to climb up the utility pole to collect them.

Furthermore, there is a risk that the sample may be mixed up while collecting a large number of samples. Such a mistake can also occur in the process of PCB analysis. If such a sample mix-up occurs, the analysis result and the target electrical device do not match, and it is normally disposed of as safe for electrical devices containing high-concentration PCB, and the PCB is placed in the environment. It can also be leaked.

The present invention provides a sampler for PCB analysis and a sampler for PCB analysis so that a sample for PCB analysis can be safely and easily collected from an electric device, and sample collection is unlikely to occur even after being collected. The purpose is to provide a management method.

In order to solve the above-described problems, a sampler for PCB analysis according to the present invention includes a vacuum vessel having an elastic cap, a vacuum vessel holder having a hollow needle at the bottom, and a thin tube connected to the hollow needle. .

A PCB analysis sample collection kit according to the present invention includes a vacuum container having an elastic cap, a vacuum container holder having a hollow needle at the bottom, and a PCB analysis sample collector having a thin tube connected to the hollow needle, It has an IC tag or an identification label indicating the same identification information.

The PCB analysis sample collection method of the present invention is a PCB analysis sample collection method using the above-described PCB analysis sample collection device, wherein a thin tube is inserted into a gap of an electrical device having insulating oil to be analyzed by the PCB, A thin tube and a hollow needle are connected, a needle is pushed through the cap of the vacuum vessel in the vacuum vessel holder, and the insulating oil in the electrical equipment is collected in the vacuum vessel.

Further, the PCB analysis sample management method of the present invention is collected by the above-described PCB analysis sample collection method, and an IC tag or an identification label is attached to the electrical device to be sampled. Each time a new sample storage container is used in the PCB analysis process by attaching a plurality of identification labels indicating identification information, all the identification labels are replaced with new sample storage containers by leaving one identification label. It is characterized by moving. After collecting the PCB analysis sample from the electrical device, it is preferable to attach an identification label indicating the same identification information to the components of the PCB analysis sample collector other than the vacuum vessel.

The PCB analysis sample collector and the PCB analysis sample collection method of the present invention have the effect that a sample can be collected safely and simply from a small gap without greatly opening and spreading the electrical equipment. In addition, the PCB analysis sample collection kit and PCB analysis sample management method of the present invention have the effect of preventing sample mix-up during sample collection and subsequent steps, and that the analysis result and the target electrical device always match. .

The best mode for carrying out the present invention will be described. FIG. 1 is a conceptual diagram showing a sampler for PCB analysis. The PCB analysis sample collector 1 includes a vacuum vessel 2, a vacuum vessel holder 3, and a thin tube 4.

The vacuum container 2 has a test tube-shaped container body 2a and a cap 2b that closes an end of the container body 2b. This cap is made of an elastic body cap 2b such as rubber, and can seal the container body 2a, and can be easily pierced with a needle. The inside of the vacuum vessel 2 is at a pressure lower than atmospheric pressure.

The vacuum vessel holder 3 can accommodate the vacuum vessel 2 therein, and a hollow needle 5 is provided at the bottom. The hollow needle 5 is attached in a state of penetrating the bottom surface, and the end portion in the vacuum vessel holder 3 is sharp and faces the cap 2b. A thin tube 4 can be attached to and detached from the multi-end side of the hollow needle 5. The vacuum vessel holder 3 is formed with a flange portion 6.

Next, a method for collecting a PCB analysis sample using the PCB analysis sample collector 1 will be described. FIG. 2 is a conceptual diagram illustrating a PCB analysis sample collection method. An upper lid 11 of the transformer 10 is fixed by bolts 12 and packings 13. Loosen this bolt 12 a little to create a gap. It is not necessary to remove all the bolts because the gap is sufficient to allow the thin tube 4 to be inserted. Therefore, the sampling operation can be performed in a state almost similar to a closed system.

Here, it is preferable that the thin tube 4 has a bent portion. It may be made of a material such as a metal tube or a hard plastic tube and a bent portion is formed in advance. Moreover, the thin tube of the raw material which can be bent by bending by hand and can maintain the state may be sufficient. When the tip of the thin tube 4 reaches the insulating oil 14 inside the transformer 10, the other end of the thin tube 4 is connected to the hollow needle 5.

Subsequently, the vacuum vessel 2 is pushed into the back of the vacuum vessel holder 3 and the hollow needle 4 is pierced through the cap 2b. In this example, since the flange portion 6 is provided in the vacuum vessel holder 3, if the finger is applied to the flange portion 6, it can be performed with one hand.

When the hollow needle 5 penetrates the cap 2b, the insulating oil 14 in the transformer 10 is sucked into the vacuum vessel 2. Thus, the insulating oil can be easily and safely collected as a PCB analysis sample. In addition to the transformer stored in the warehouse, the PCB analysis sample can be easily collected from the transformer in use at a high place.

FIG. 3 is a conceptual diagram showing a set of identification IC tags and labels. The IC tag / label set 20 includes a plurality of IC tags or identification labels. In this example, it consists of one IC tag 21 for attaching an electric device, and a sample container and an identification label 22 as many as the number used in the subsequent process.

The IC tag 21 is provided with an IC chip 23 and an attachment portion 24 for attachment to an electric device. The memory in the IC chip 23 stores identification information unique to the IC tag.

The same identification information as that of the IC tag 21 is also attached to the identification label 22. The identification label 22 is preferably a label readable by a scanner such as a barcode. In addition to the number of samples used in the sample container and the subsequent process, an identification label 22 for attaching to the components of the PCB analysis sample collector other than the vacuum container in the sample analyzer for PCB analysis after sampling is also provided. Good.

The set of identification IC tags and labels are integrated as a series of units, but they can be separated at the time of use. A set of IC tags and labels for identification and a sampler for PCB analysis can be combined one by one to make a sample collection kit for PCB analysis.

Next, a sample management method for PCB analysis will be described. FIG. 4 is an explanatory view showing a sample analysis method for PCB analysis. After the sample is collected by the above-described PCB analysis sample collection method, the IC tag 21 is attached to the electric device 10. For example, the mounting portion 24 may be fitted into the bolt 12 that has been loosened for sampling, and the bolt 12 may be tightened to be fixed to the upper lid 11.

The sampler 1 for PCB analysis is separated into a vacuum vessel 2 and other parts. Parts other than the vacuum container 2 are put in a plastic bag or the like and stored in a safe place, but an identification label is affixed on this part or on the plastic bag. The vacuum container 2 that sucked the sample becomes the sample container 30. All the labels (22a, 22b, 22c, 22d, 22e) for the subsequent steps are attached to the sample container 30.

Subsequent PCB analysis sample management is slightly different depending on the PCB analysis process, but the essential point is not different from the example described here. In this example, sample dilution, column passage (purification), analysis, report creation, and management report creation are performed.

A part of the sample is transferred from the sample container 30 to the sample preparation container 31 and diluted to an appropriate concentration. At this time, one (22a) of the identification labels affixed to the sample container 30 is left in the sample container 30, and all the others are transferred to the sample preparation container 31.

The sample in the sample preparation container 31 is purified through the column 32 and stored in the measurement container 33. At this time, the identification label 22b is left in the sample preparation container 31, and one sheet (22c) is attached to the column 32, and all other parts are attached to the measurement container 33.

The measurement sample in the measurement container 33 is put into the analyzer 35 and the amount of PCB is measured. At this time, the identification information may be read from the identification label 22 of the measurement container 33 by a scanner and taken into the analyzer 35. The analysis device 35 creates and prints a report 34 based on the analysis result. In this report 34, the same identification information as the identification label 22 is printed with a barcode or the like together with the PCB analysis result. Alternatively, an identification label for the report may be prepared and pasted on the report 34.

In this way, the same identification information is attached to the instruments and documents intervening in all processes from the electrical device 10 to be analyzed to the report 34. As a result, it is possible to prevent the sample from being mixed in each process, and to ensure the coincidence of the analysis equipment with the electrical equipment to be analyzed by the PCB. From the analysis result, it is determined whether the PCB needs to be decomposed or whether it can be disposed of in the same manner as normal insulating oil. Since the identification label 22 is also attached to the sample container 30, the sample preparation container 31, and the like, these instruments are also appropriately disposed according to the determination. Moreover, components other than the vacuum vessel 2 can be appropriately treated in the same manner by a used PCB analysis sample collector other than the vacuum vessel 2.

The analysis result may be transmitted to the server 36 together with the identification information. The transmitted data is stored in the internal storage device 36a. When a plurality of analysis results are collected, a series of related items are printed as a management slip 37. Identification information is printed on the management slip 37 together with the analysis result in a barcode or the like. Or you may affix the identification label 22e for management slips. In this way, each analysis data in the management slip 37 can be associated with the electrical device to be analyzed reliably.

As described above, according to the sample management method for PCB analysis of the present invention, the PCB analysis result and the electrical device are reliably associated with each other. Therefore, appropriate disposal can be performed according to the analysis result. Further, immediately before disposal of the electrical device 10, identification information can be read from the IC tag 21 remaining in the electrical device 10, and the final confirmation can be performed by referring to the analysis result from the server 36. When the disposal is performed, information indicating that the disposal is completed can be transmitted to the server 36 and stored in the storage device 36a. Thereby, the progress of disposal of the electrical equipment can be grasped, and information such as where and how many electrical equipment including high-concentration PCBs remain can be managed.

It is a conceptual diagram which shows the sample collector for PCB analysis. It is a conceptual diagram which shows the sample collection method for PCB analysis. It is a conceptual diagram which shows the set of the IC tag and label for identification. It is explanatory drawing which shows the sample management method for PCB analysis.

Explanation of symbols

1. 1. Sample collector for PCB analysis Vacuum vessel 2b. Cap 3. Vacuum vessel holder 4. Capillary tube 5 Hollow needle 6. Flange part 10. Electrical equipment (transformer)
11. Upper lid 12. Bolt 13. Packing 14. Insulating oil 20. IC tag and label set 21. IC tag 22. Identification label 30. Sample container 36. server

Claims (5)

A sampler for PCB analysis, comprising: a vacuum container having an elastic cap; a vacuum container holder having a hollow needle at the bottom; and a thin tube connected to the hollow needle. A sampler for PCB analysis having a vacuum container having an elastic cap, a vacuum container holder having a hollow needle at the bottom, and a thin tube connected to the hollow needle;
A sample collection kit for PCB analysis having an IC tag or an identification label indicating the same identification information. A PCB analysis sample collection method using the PCB analysis sample collector according to claim 1, comprising:
Insert a thin tube into the gap between the electrical equipment having insulating oil to be analyzed by PCB, connect the thin tube and the hollow needle,
In the vacuum vessel holder, pierce the needle through the cap of the vacuum vessel,
Sample collection method for PCB analysis in which insulating oil in electrical equipment is collected in a vacuum vessel. A method for managing a PCB analysis sample collected by the PCB analysis sample collection method according to claim 3,
Attach an IC tag or identification label to the electrical equipment to be sampled,
Affixing multiple identification labels indicating the same identification information to the vacuum vessel from which the sample was collected,
A sample management method for PCB analysis, characterized in that every time a new sample storage container is used in the PCB analysis process, all the identification labels are moved to a new sample storage container, leaving one identification label. 5. The PCB analysis sample management method according to claim 4, wherein after the PCB analysis sample is collected from the electric device, an identification label indicating the same identification information is attached to parts of the PCB analysis sample collector other than the vacuum vessel.

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