JP2020193866A - Radiation measuring device - Google Patents
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- 230000005855 radiation Effects 0.000 title claims abstract description 270
- 230000007246 mechanism Effects 0.000 claims abstract description 75
- 238000011109 contamination Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 76
- 238000007689 inspection Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 description 53
- 238000000034 method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
Description
本発明は、放射線測定器が取り付けられた放射線測定装置及び放射線測定器を取り付ける放射線測定器取付装置に関する。 The present invention relates to a radiation measuring device to which a radiation measuring device is attached and a radiation measuring device mounting device to which the radiation measuring device is attached.
原子力発電所などの放射線管理区域内で使用された物品を非管理区域へ搬出する場合は、前記物品の汚染の有無を検査し（以下、「汚染検査」又は「サーベイ」ともいう）、規定の表面汚染密度以下であるかどうかを確認する必要がある。非管理区域へ搬出される物品には様々な形状や大きさのものがあるため、ほとんどの物品のサーベイは、人が携帯用のサーベイメーター等の放射線測定器を手に持ち、人海戦術により行っている。また、固定して設置される放射線測定装置による測定も検討されているが（例えば、特許文献１参照）、これは大規模な装置となり、コストが高く、また物品の様々な形状や大きさに対応できる自由度も低かった。このような状況のもと、サーベイに携わる測定員の手間をはぶき、検査効率を高めながら、コスト的にも安価である検査方法や検査装置が望まれていた。 When an article used in a radiation controlled area such as a nuclear power plant is carried out to an uncontrolled area, the article is inspected for contamination (hereinafter, also referred to as "contamination inspection" or "survey") and prescribed. It is necessary to confirm whether it is below the surface contamination density. Due to the variety of shapes and sizes of items that are shipped to uncontrolled areas, most item surveys are conducted by human-wave tactics, with a person holding a radiation measuring instrument such as a portable survey meter. Is going. In addition, measurement by a fixed radiation measuring device is also being considered (see, for example, Patent Document 1), but this is a large-scale device, is expensive, and can be used for various shapes and sizes of articles. The degree of freedom to deal with was also low. Under such circumstances, there has been a demand for an inspection method and an inspection device that saves the trouble of the measuring staff involved in the survey, improves the inspection efficiency, and is inexpensive in terms of cost.
本発明の課題は、サーベイに携わる測定員の手間をはぶき、検査効率を高めながら、コスト的にも安価である検査装置を提供することである。 An object of the present invention is to provide an inspection device which saves time and effort of a measuring person involved in a survey, improves inspection efficiency, and is inexpensive in terms of cost.
本発明者らは、サーベイ時間の短縮と測定員の労力及び身体的負担を低減するための検討を開始した。表面汚染密度の測定は、測定対象物の表面から規定の距離（例えば、５ｍｍ以内）で測定することが決められている。そして、測定対象物の形状や大きさは様々である。そのため、人が携帯用のサーベイメーターの検出部を手に持ち、検出面と測定対象物の表面との距離が規定距離内になるように、測定対象物の表面形状に沿って検出部を動かしていくことが必要となる。このことが、測定員の負担を増やし、サーベイ時間の増加や必要とされる測定員数の増加を引き起こしていた。自動測定装置を導入することも検討したが、１台で様々な物品の形状や大きさに対応できる装置を開発することは難しく、物品の形状や大きさに合わせて複数の種類の測定装置が必要となるため、コスト的にもスペース的にも現実的ではない。そこで、検討を進めるなかで、現在、測定員が手に持って測定を行っている測定器（例えば、サーベイメーター）を、測定対象物の形状に合わせて、半自動（半手動）又は自動で使用したり、従来通り手に持って使用したりすることにより、測定員の作業負担を低減しながら測定対象物に対する適応自由度の高いサーベイ環境が得られることを見いだした。しかも、半自動（半手動）又は自動で測定を行う場合は、測定器を手に持って行う場合よりも測定対象物表面と測定器の距離を適切に保持できる。これは、測定対象物を通す際のガイドや測定対象物の表面と測定器の検出面との距離を測る指標となる板を介して測定対象物を測定できるように、従来手に持ち使用していた測定器の検出部を着脱自在に当該板に取り付け、このような板を上下左右に設置して固定し、その間（測定空間）を手動又は自動で測定対象物を通すことにより可能となる。この方法によれば、測定空間に測定対象物を通すだけで、上下左右の各面の測定を行うことができる。さらに、各板の間隔を適宜調整すれば、測定対象物の厚みや幅に応じた測定を行うことができる。例えば、数量の多い足場等の板状の測定対象物は、この方法により測定することができるので、上下左右の各面をいちいち測定器を手に持ち測定していた従来に比べて、極めて作業効率よく測定することができる。測定空間に測定対象物を手動で通すだけで上下左右が一度に測定できるという意味で半自動（半手動）であり、測定対象物の移動も自動にすれば全自動となる。そして、測定が終了したら測定器を取り外して、他の形状の対象物の測定を従来通り行うことができる。この方法によれば、新たに測定器を購入することなく、既存の測定器を使用して数量の多い測定対象物を効率よく、信頼性の高い測定を行うことができ、また、仮に新たに測定器を購入するとしても、一般に広く販売されている測定器を購入すればよいので、コストの増加を抑制しながら新たなサーベイ環境を導入できる。本発明は、このような方法を可能にする放射線測定装置、及び放射線測定器の取付装置を提供するものである。 The present inventors have started a study for shortening the survey time and reducing the labor and physical burden on the measurer. It is determined that the surface contamination density is measured at a specified distance (for example, within 5 mm) from the surface of the object to be measured. The shape and size of the object to be measured are various. Therefore, a person holds the detector of a portable survey meter in his hand and moves the detector along the surface shape of the object to be measured so that the distance between the detection surface and the surface of the object to be measured is within the specified distance. It is necessary to go. This increased the burden on the measurers, causing an increase in survey time and an increase in the number of measurers required. We also considered introducing an automatic measuring device, but it is difficult to develop a device that can handle various shapes and sizes of articles with one unit, and there are multiple types of measuring devices according to the shape and size of the article. It is not realistic in terms of cost and space because it is required. Therefore, as we proceed with the study, we use a measuring instrument (for example, a survey meter) that the measurer is currently holding in his hand and measuring it semi-automatically (semi-manually) or automatically according to the shape of the object to be measured. It was found that a survey environment with a high degree of freedom of adaptation to the object to be measured can be obtained while reducing the work load of the measurer by using it by holding it in the hand as before. Moreover, when the measurement is performed semi-automatically (semi-manually) or automatically, the distance between the surface of the object to be measured and the measuring instrument can be maintained more appropriately than when the measuring instrument is held in the hand. This is conventionally held and used so that the object to be measured can be measured through a guide when passing the object to be measured or a plate that is an index for measuring the distance between the surface of the object to be measured and the detection surface of the measuring instrument. This is possible by attaching the detection unit of the measuring instrument that had been used to the plate detachably, installing such a plate vertically and horizontally and fixing it, and manually or automatically passing the object to be measured between them (measurement space). .. According to this method, it is possible to measure each surface of the upper, lower, left and right sides only by passing the object to be measured through the measurement space. Further, if the interval between the plates is appropriately adjusted, the measurement can be performed according to the thickness and width of the object to be measured. For example, a large number of plate-shaped measurement objects such as scaffolds can be measured by this method, so it is extremely workable compared to the conventional method in which each of the top, bottom, left, and right surfaces is measured by holding a measuring instrument. It can be measured efficiently. It is semi-automatic (semi-manual) in the sense that it can measure up, down, left, and right at once by simply passing the measurement object through the measurement space manually, and it becomes fully automatic if the movement of the measurement object is also automatic. Then, when the measurement is completed, the measuring instrument can be removed and the measurement of an object having another shape can be performed as before. According to this method, it is possible to efficiently and highly reliable measurement of a large number of measurement objects using an existing measuring instrument without purchasing a new measuring instrument, and if a new measuring instrument is newly used. Even if you purchase a measuring instrument, you can purchase a measuring instrument that is widely sold, so you can introduce a new survey environment while suppressing the increase in cost. The present invention provides a radiation measuring device and a mounting device for a radiation measuring device that enable such a method.
すなわち、本発明は以下に示す事項により特定されるものである。
（１）開口部を有する上面板、下面板、左側面板及び右側面板、並びに上面用放射線測定器、下面用放射線測定器、左側面用放射線測定器及び右側面用放射線測定器を備え、上面用放射線測定器が、その検出面が前記上面板の開口部の上方又は前記開口部中において、下方を向くように配置され、下面用放射線測定器が、その検出面が前記下面板の開口部の下方又は前記開口部中において、上方を向くように配置され、左側面用放射線測定器が、その検出面が前記左側面板の開口部の左側又は前記開口部中において、右側を向くように配置され、右側面用放射線測定器が、その検出面が前記右側面板の開口部の右側又は前記開口部中において、左側を向くように配置され、前記上面板と前記下面板との間隔を調整する上下板間隔調整機構、前記上面用放射線測定器と前記下面用放射線測定器との間隔を調整する上下放射線測定器間隔調整機構、前記左側面板と前記右側面板との間隔を調整する左右板間隔調整機構、及び前記左側面用放射線測定器と前記右側面用放射線測定器との間隔を調整する左右放射線測定器間隔調整機構を更に備え、測定対象物を前記上面板、下面板、左側面板及び右側面板の間を通過させることにより前記測定対象物の汚染の程度を測定する放射線測定装置。
（２）上面用放射線測定器、下面用放射線測定器、左側面用放射線測定器及び右側面用放射線測定器から選ばれる少なくとも１つが着脱自在に取り付けられて配置されることを特徴とする上記（１）の放射線測定装置。
（３）上面用放射線測定器及び下面用放射線測定器が上面板及び下面板にそれぞれ取り付けられて配置され、左側面用放射線測定器及び右側面用放射線測定器が左側面板及び右側面板にそれぞれ取り付けられて配置され、上下板間隔調整機構と上下放射線測定器間隔調整機構が同一の機構であり、左右板間隔調整機構と左右放射線測定器間隔調整機構が同一の機構であることを特徴とする上記（１）又は（２）の放射線測定装置。
（４）測定対象物の運搬装置との接続機構を備えることを特徴とする上記（１）〜（３）のいずれかの放射線測定装置。
（５）放射線測定器を取り付ける放射線測定器取付装置であって、開口部を有する上面板、下面板、左側面板及び右側面板、前記上面板に設けられた、上面用放射線測定器をその検出面が前記上面板の開口部の上方又は前記開口部中に位置するように着脱自在に取り付ける取付部、前記下面板に設けられた、下面用放射線測定器をその検出面が前記下面板の開口部の下方又は前記開口部中に位置するように着脱自在に取り付ける取付部、前記左側面板に設けられた、左側面用放射線測定器をその検出面が前記左側面板の開口部の左側又は前記開口部中に位置するように着脱自在に取り付ける取付部、前記右側面板に設けられた、右側面用放射線測定器をその検出面が前記右側面板の開口部の右側又は前記開口部中に位置するように着脱自在に取り付ける取付部、前記上面板と前記下面板との間隔を調整することにより、前記上面板と前記下面板とにそれぞれ取り付けられた上面用放射線測定器と下面用放射線測定器との間隔を調整する上下間隔調整機構、及び前記左側面板と前記右側面板との間隔を調整することにより、前記左側面板と前記右側面板とにそれぞれ取り付けられた左側面用放射線測定器と右側面用放射線測定器との間隔を調整する左右間隔調整機構、を備える放射線測定器取付装置。
That is, the present invention is specified by the following matters.
(1) A top plate, a bottom plate, a left side plate and a right side plate having an opening, and a radiation measuring instrument for the upper surface, a radiation measuring instrument for the lower surface, a radiation measuring instrument for the left surface, and a radiation measuring instrument for the right surface are provided for the upper surface. The radiation measuring instrument is arranged so that its detection surface faces downward above or in the opening of the upper surface plate, and the lower surface radiation measuring instrument has its detection surface of the opening of the lower surface plate. The radiation measuring instrument for the left side surface is arranged so as to face upward in the lower part or in the opening, and the detection surface thereof faces to the left side of the opening of the left side plate or in the opening. , The radiation measuring instrument for the right side surface is arranged so that its detection surface faces the left side in the right side of the opening of the right side surface plate or in the opening, and adjusts the distance between the upper surface plate and the lower surface plate. Plate spacing adjustment mechanism, vertical radiation measuring device spacing adjusting mechanism for adjusting the distance between the upper surface radiation measuring device and the lower surface radiation measuring device, left and right plate spacing adjusting mechanism for adjusting the distance between the left side plate and the right side plate. The left and right radiation measuring instruments are further provided with a left-right radiation measuring instrument spacing adjusting mechanism for adjusting the distance between the left-side radiation measuring instrument and the right-side radiation measuring instrument, and the objects to be measured are the top plate, the bottom plate, the left side plate and the right side plate. A radiation measuring device that measures the degree of contamination of the object to be measured by passing through the space.
(2) At least one selected from a radiation measuring instrument for the upper surface, a radiation measuring instrument for the lower surface, a radiation measuring instrument for the left side surface, and a radiation measuring instrument for the right side surface is detachably attached and arranged (1). 1) Radiation measuring device.
(3) The upper surface radiation measuring instrument and the lower surface radiation measuring instrument are attached to the upper surface plate and the lower surface plate, respectively, and the left side radiation measuring instrument and the right side radiation measuring instrument are attached to the left side plate and the right side plate, respectively. The upper and lower plate spacing adjustment mechanism and the upper and lower radiation measuring instrument spacing adjusting mechanism are the same mechanism, and the left and right plate spacing adjusting mechanism and the left and right radiation measuring instrument spacing adjusting mechanism are the same mechanism. The radiation measuring device of (1) or (2).
(4) The radiation measuring device according to any one of (1) to (3) above, which comprises a connection mechanism with a transporting device for an object to be measured.
(5) A radiation measuring device mounting device for mounting a radiation measuring device, wherein a radiation measuring device for the upper surface provided on a top plate, a bottom plate, a left side plate and a right side plate having an opening, and the top plate is a detection surface thereof. A mounting portion that is detachably attached so as to be located above or in the opening of the upper surface plate, and a radiation measuring instrument for the lower surface provided on the lower surface plate whose detection surface is the opening of the lower surface plate. A mounting part that is detachably attached so as to be located below or in the opening, and a radiation measuring instrument for the left side provided on the left side plate, the detection surface of which is the left side of the opening of the left side plate or the opening. A mounting part that is detachably attached so as to be located inside, and a radiation measuring instrument for the right side provided on the right side plate so that the detection surface is located on the right side of the opening of the right side plate or in the opening. By adjusting the detachable mounting portion and the distance between the upper surface plate and the lower surface plate, the distance between the upper surface radiation measuring device and the lower surface radiation measuring device attached to the upper surface plate and the lower surface plate, respectively. By adjusting the vertical spacing adjusting mechanism that adjusts the distance between the left side plate and the right side plate, the left side radiation measuring device and the right side radiation measuring device attached to the left side plate and the right side plate, respectively. A radiation measuring instrument mounting device equipped with a left-right spacing adjustment mechanism that adjusts the distance from the instrument.
本発明の放射線測定装置によれば、測定員の手作業で行っていたサーベイよりも短時間で同様の検査ができる。そのため、足場等の数量の多い対象物の測定に好適である。また、既存の放射線測定器を使用できるので、放射線測定器を有効活用できコスト的にも優れる。既存の放射線測定器を一度に複数台使用できるので、測定対象物の複数の面を一度に測定することができる。測定対象物表面との距離を適切に保持した測定ができる。放射線測定器が着脱できるので、本発明の放射線測定装置で測定できない対象物に対しては放射線測定器を取り外して測定することができる。放射線測定装置の構造が簡易なので、装置が汚染された場合の除染が容易である。軽量、コンパクトなので、容易に移動させることができる。 According to the radiation measuring apparatus of the present invention, the same inspection can be performed in a shorter time than the survey performed manually by the measurer. Therefore, it is suitable for measuring a large number of objects such as scaffolding. Moreover, since the existing radiation measuring instrument can be used, the radiation measuring instrument can be effectively used and the cost is excellent. Since a plurality of existing radiation measuring instruments can be used at one time, it is possible to measure a plurality of surfaces of a measurement object at a time. Measurement can be performed while maintaining an appropriate distance from the surface of the object to be measured. Since the radiation measuring device can be attached and detached, the radiation measuring device can be removed and measured for an object that cannot be measured by the radiation measuring device of the present invention. Since the structure of the radiation measuring device is simple, decontamination when the device is contaminated is easy. Lightweight and compact, it can be easily moved.
本発明の放射線測定装置は、開口部を有する上面板、下面板、左側面板及び右側面板、並びに上面用放射線測定器、下面用放射線測定器、左側面用放射線測定器及び右側面用放射線測定器を備え、上面用放射線測定器が、その検出面が前記上面板の開口部の上方又は前記開口部中において、下方を向くように配置され、下面用放射線測定器が、その検出面が前記下面板の開口部の下方又は前記開口部中において、上方を向くように配置され、左側面用放射線測定器が、その検出面が前記左側面板の開口部の左側又は前記開口部中において、右側を向くように配置され、右側面用放射線測定器が、その検出面が前記右側面板の開口部の右側又は前記開口部中において、左側を向くように配置され、前記上面板と前記下面板との間隔を調整する上下板間隔調整機構、前記上面用放射線測定器と前記下面用放射線測定器との間隔を調整する上下放射線測定器間隔調整機構、前記左側面板と前記右側面板との間隔を調整する左右板間隔調整機構、及び前記左側面用放射線測定器と前記右側面用放射線測定器との間隔を調整する左右放射線測定器間隔調整機構を更に備え、測定対象物を前記上面板、下面板、左側面板及び右側面板の間を通過させることにより前記測定対象物の汚染の程度を測定する放射線測定装置であることを特徴とする。ここで、上方及び下方とは、それぞれ本発明の放射線測定装置を設置したときの上方向及び下方向をいい、左側及び右側とは、それぞれ測定対象物が進入する方向から向かって左側及び右側をいう。本発明における上面板、下面板、左側面板及び右側面板の形状は、放射線測定器の検出面が測定対象物からの放射線を検知することができる程度の開口部を有していれば、特に制限されるものではない。また、その材質も特に制限させるものでなく、例えば、鉄、ステンレス等の金属、プラスチック等を挙げることができる。 The radiation measuring device of the present invention includes a top plate, a bottom plate, a left side plate and a right side plate having an opening, and a top surface radiation measuring device, a bottom surface radiation measuring device, a left side surface radiation measuring device and a right side surface radiation measuring device. The upper surface radiation measuring instrument is arranged so that its detection surface faces downward above or in the opening of the upper surface plate, and the lower surface radiation measuring instrument has its detection surface below the opening. The radiation measuring instrument for the left side is arranged so as to face upward below the opening of the face plate or in the opening, and the detection surface thereof is on the left side of the opening of the left face plate or on the right side in the opening. The radiation measuring instrument for the right side surface is arranged so as to face, and the detection surface thereof is arranged so as to face the left side in the right side of the opening of the right side plate or in the opening, and the upper surface plate and the lower surface plate are arranged. Upper and lower plate spacing adjustment mechanism for adjusting the distance, upper and lower radiation measuring instrument spacing adjusting mechanism for adjusting the distance between the upper surface radiation measuring instrument and the lower surface radiation measuring instrument, and adjusting the distance between the left side plate and the right side plate. The left and right plate spacing adjusting mechanism and the left and right radiation measuring instrument spacing adjusting mechanism for adjusting the distance between the left side radiation measuring instrument and the right side radiation measuring instrument are further provided, and the objects to be measured are the upper surface plate, the lower surface plate, and the like. It is a radiation measuring device that measures the degree of contamination of the object to be measured by passing it between the left side plate and the right side plate. Here, the upper and lower directions refer to the upward and downward directions when the radiation measuring device of the present invention is installed, respectively, and the left and right sides refer to the left and right sides from the direction in which the measurement object enters, respectively. Say. The shapes of the top plate, the bottom plate, the left side plate, and the right side plate in the present invention are particularly limited as long as the detection surface of the radiation measuring instrument has an opening capable of detecting radiation from the object to be measured. It is not something that is done. Further, the material thereof is not particularly limited, and examples thereof include metals such as iron and stainless steel, and plastics.
本発明においては、上面用放射線測定器、下面用放射線測定器、左側面用放射線測定器及び右側面用放射線測定器の少なくとも４種類の測定器が使用されるが、各種測定器はそれぞれ１個でもよく２個以上でもよく、測定対象物の大きさと各種測定器の検出面の大きさとの関係から使用する測定器の個数を適宜選択することができ、同じ種類の測定器のみを使用してもよく、異なる種類の測定器を使用してもよい。本発明における放射線測定器は、その測定方式、構造、大きさ等は特に制限されるものでなく、一般に使用されている放射線測定器を使用することができ、例えば、ＧＭ管式サーベイメーター、シンチレーションサーベイメーター等の放射線測定器を挙げることができる。本発明においては、測定対象物が通過する測定空間の上部に上面板が設置され、下部に下面板が設置され、左側部に左側面板が設置され、右側部に右側面板が設置される。上面用放射線測定器は、上面板の開口部を通して上面板の下方を通過する測定対象物の上面を測定できるように、その検出面が上面板の開口部の上方又は開口部中において、下方を向くように配置される。ここで、開口部中とは、開口部において検出面が、上面板の上側の面と同じ高さにある場合と上面板の下側の面と同じ高さにある場合とを含む。下面用放射線測定器は、下面板の開口部を通して下面板の上方を通過する測定対象物の下面を測定できるように、その検出面が下面板の開口部の下方又は開口部中において、上方を向くように配置される。ここで、開口部中とは、開口部において検出面が、下面板の下側の面と同じ高さにある場合と下面板の上側の面と同じ高さにある場合とを含む。左側面用放射線測定器は、左側面板の開口部を通して左側面板の右側を通過する測定対象物の左側面を測定できるように、その検出面が左側面板の開口部の左側又は開口部中において、右側を向くように配置される。ここで、開口部中とは、開口部において検出面が、左側面板の左側の面と同じ平面上にある場合と左側面板の右側の面と同じ平面上にある場合とを含む。右側面用放射線測定器は、右側面板の開口部を通して右側面板の左側を通過する測定対象物の右側面を測定できるように、その検出面が右側面板の開口部の右側又は開口部中において、左側を向くように配置される。ここで、開口部中とは、開口部において検出面が、右側面板の右側の面と同じ平面上にある場合と右側面板の左側の面と同じ平面上にある場合とを含む。本発明の放射線測定装置では、測定対象物を上面板、下面板、左側面板及び右側面板の間を通過させて、上面用放射線測定器、下面用放射線測定器、左側面用放射線測定器及び右側面用放射線測定器により、測定対象物の上面、下面、左側面及び右側面の表面汚染密度を測定することができる。 In the present invention, at least four types of measuring instruments, a top surface radiation measuring instrument, a bottom surface radiation measuring instrument, a left surface radiation measuring instrument, and a right side radiation measuring instrument, are used, but each of the various measuring instruments is one. However, two or more may be used, and the number of measuring instruments to be used can be appropriately selected from the relationship between the size of the object to be measured and the size of the detection surface of various measuring instruments, and only the same type of measuring instruments are used. Also, different types of measuring instruments may be used. The radiation measuring instrument in the present invention is not particularly limited in its measuring method, structure, size, etc., and a commonly used radiation measuring instrument can be used, for example, a GM tube type survey meter, scintillation. A radiation measuring instrument such as a survey meter can be mentioned. In the present invention, the upper surface plate is installed in the upper part of the measurement space through which the object to be measured passes, the lower surface plate is installed in the lower part, the left side surface plate is installed in the left side portion, and the right side surface plate is installed in the right side portion. The radiation measuring instrument for the upper surface has a detection surface above or in the opening of the upper surface plate so that the upper surface of the object to be measured passing below the upper surface plate can be measured through the opening of the upper surface plate. Arranged to face. Here, the inside of the opening includes a case where the detection surface in the opening is at the same height as the upper surface of the upper surface plate and a case where the detection surface is at the same height as the lower surface of the upper surface plate. The radiation measuring instrument for the lower surface has a detection surface below the opening of the lower surface plate or above the opening so that the lower surface of the object to be measured passing above the lower surface plate can be measured through the opening of the lower surface plate. Arranged to face. Here, the inside of the opening includes a case where the detection surface in the opening is at the same height as the lower surface of the lower surface plate and a case where the detection surface is at the same height as the upper surface of the lower surface plate. The radiation measuring instrument for the left side surface has a detection surface on the left side of the opening of the left side plate or in the opening so that the left side surface of the object to be measured passing through the opening of the left side plate can be measured. Arranged to face the right side. Here, the inside of the opening includes a case where the detection surface in the opening is on the same plane as the left surface of the left face plate and a case where the detection surface is on the same plane as the right surface of the left face plate. A radiation measuring instrument for the right side has a detection surface on the right side of the opening of the right side plate or in the opening so that the right side surface of the object to be measured passing through the opening of the right side plate can be measured. Arranged so that it faces the left side. Here, the inside of the opening includes a case where the detection surface in the opening is on the same plane as the right surface of the right side plate and a case where the detection surface is on the same plane as the left surface of the right side plate. In the radiation measuring device of the present invention, the object to be measured is passed between the upper surface plate, the lower surface plate, the left side plate and the right side plate, and the upper surface radiation measuring instrument, the lower surface radiation measuring instrument, the left side surface radiation measuring instrument and the right side are passed. The surface radiation measuring device can measure the surface contamination density of the upper surface, the lower surface, the left side surface and the right side surface of the object to be measured.
本発明は、上面板と下面板との間隔を調整する上下板間隔調整機構、及び左側面板と右側面板との間隔を調整する左右板間隔調整機構、並びに上面用放射線測定器と下面用放射線測定器との間隔を調整する上下放射線測定器間隔調整機構、及び左側面用放射線測定器と右側面用放射線測定器との間隔を調整する左右放射線測定器間隔調整機構を更に備える。前記各種調整機構は、それぞれの板と板との間隔又はそれぞれの測定器の検出面と検出面との間隔、すなわちそれぞれの板と板との間の距離又はそれぞれの検出面と検出面との間の距離を調整できるものであれば、その構造、材質等特に制限されるものではなく、各種の公知の方法や構造を用いることができる。例えば、ねじ構造を利用した構造、油圧を利用した構造等を挙げることができる。本発明の放射線測定装置では、測定対象物の高さ及び幅に合わせて上面板と下面板との間隔及び左側面板と右側面板との間隔を調整することにより、測定対象物を上面板、下面板、左側面板及び右側面板の間を通過させることができる。さらに、上面用放射線測定器の検出面と下面用放射線測定器の検出面との間隔及び左側面用放射線測定器の検出面と右側面用放射線測定器の検出面との間隔を調整することにより、測定対象物の上面、下面、左側面及び右側面から適切な距離で各表面を測定することができる。本発明の放射線測定装置における上面板、下面板、左側面板及び右側面板は、例えば、板状の測定対象物等を通過させて測定する場合のガイドとなり、また放射線測定器の検出面が前記各板の開口部中又は測定対象物に対して開口部の後方にあるため、測定中に前記検出面が測定対象物と接触するのを防ぐ。さらに、上面板、下面板、左側面板及び右側面板と測定対象物の各表面との距離に基づいて、上面用放射線測定器、下面用放射線測定器、左側面用放射線測定器及び右側面用放射線測定器の各測定器の検出面の位置を設定すれば、前記測定対象物の各表面と検出面との距離を適切に設定することができるので、前記各板は、各検出面と測定対象物の各表面との間に適切な距離を設定するときの指標となる。 The present invention has an upper and lower plate spacing adjusting mechanism that adjusts the distance between the top plate and the bottom plate, a left and right plate spacing adjusting mechanism that adjusts the distance between the left side plate and the right side plate, and a radiation measuring device for the top surface and radiation measurement for the bottom surface. It is further provided with a vertical radiation measuring instrument spacing adjusting mechanism for adjusting the distance from the instrument and a left and right radiation measuring instrument spacing adjusting mechanism for adjusting the distance between the left side radiation measuring device and the right side radiation measuring device. The various adjustment mechanisms include the distance between the plates or the distance between the detection surface and the detection surface of each measuring instrument, that is, the distance between the plates or the detection surface and the detection surface. As long as the distance between them can be adjusted, the structure and material thereof are not particularly limited, and various known methods and structures can be used. For example, a structure using a screw structure, a structure using a hydraulic pressure, and the like can be mentioned. In the radiation measuring apparatus of the present invention, the object to be measured is set to the top plate and the bottom by adjusting the distance between the top plate and the bottom plate and the distance between the left side plate and the right side plate according to the height and width of the object to be measured. It can be passed between the face plate, the left side plate and the right side plate. Furthermore, by adjusting the distance between the detection surface of the upper surface radiation measuring instrument and the detection surface of the lower surface radiation measuring instrument and the distance between the detection surface of the left side radiation measuring instrument and the detection surface of the right side radiation measuring instrument. , Each surface can be measured at an appropriate distance from the upper surface, the lower surface, the left side surface and the right side surface of the object to be measured. The upper surface plate, lower surface plate, left side surface plate, and right side surface plate in the radiation measuring device of the present invention serve as guides when, for example, pass a plate-shaped measurement object or the like for measurement, and the detection surface of the radiation measuring instrument is each of the above. Since it is in the opening of the plate or behind the opening with respect to the object to be measured, it prevents the detection surface from coming into contact with the object to be measured during measurement. Further, based on the distance between the top plate, the bottom plate, the left side plate and the right side plate, and each surface of the object to be measured, the top surface radiation measuring instrument, the bottom surface radiation measuring instrument, the left side surface radiation measuring instrument, and the right side surface radiation. By setting the position of the detection surface of each measuring instrument of the measuring instrument, the distance between each surface of the measurement object and the detection surface can be appropriately set. Therefore, each plate has each detection surface and the measurement object. It is an index when setting an appropriate distance to each surface of an object.
本発明においては、上面用放射線測定器、下面用放射線測定器、左側面用放射線測定器及び右側面用放射線測定器から選ばれる少なくとも１つが着脱自在に取り付けられて配置されることが好ましい。前記各種測定器を着脱が自在となるように取り付けることにより、通常は他の方法、例えば、手に持って測定する等の方法で使用する測定器を取り付けて本発明における測定器として使用することができ、本発明の放射線測定装置による測定が終了したときは、取り付けた測定器を取り外して、他の方法で使用することができる。そのため、本発明の放射線測定装置のために放射線測定器を作製しなくてもよいのでコストが低減できる。また、測定現場では様々な形状の対象物を測定しなければならない。本発明の放射線測定装置では測定できない形状の対象物を測定する場合は、測定器を取り外して手に持って測定することができるため、対象物の形状に合わせて多くの測定装置や測定器を用意する必要がなく、コストが低減できることに加えて現場における測定の自由度が向上する。放射線測定器を着脱自在に取り付ける方法及び取付具は、特に制限されず公知の着脱方法や着脱取付具を使用することができる。例えば、各種クランプ、ねじ止め等を使用することができる。 In the present invention, it is preferable that at least one selected from a top surface radiation measuring device, a bottom surface radiation measuring device, a left side surface radiation measuring device, and a right side surface radiation measuring device is detachably attached and arranged. By attaching the various measuring instruments so that they can be freely attached and detached, a measuring instrument usually used by another method, for example, a method of holding and measuring by hand, is attached and used as the measuring instrument in the present invention. When the measurement by the radiation measuring device of the present invention is completed, the attached measuring device can be removed and used by another method. Therefore, it is not necessary to manufacture a radiation measuring device for the radiation measuring device of the present invention, so that the cost can be reduced. In addition, objects of various shapes must be measured at the measurement site. When measuring an object having a shape that cannot be measured by the radiation measuring device of the present invention, the measuring device can be removed and held in the hand for measurement. Therefore, many measuring devices and measuring devices can be used according to the shape of the object. There is no need to prepare, the cost can be reduced, and the degree of freedom of measurement in the field is improved. The method and attachment for attaching and detaching the radiation measuring instrument are not particularly limited, and a known attachment / detachment method and attachment / detachment attachment can be used. For example, various clamps, screws and the like can be used.
本発明においては、上面用放射線測定器及び下面用放射線測定器が上面板及び下面板にそれぞれ取り付けられて配置され、左側面用放射線測定器及び右側面用放射線測定器が左側面板及び右側面板にそれぞれ取り付けられて配置され、上下板間隔調整機構と上下放射線測定器間隔調整機構が同一の機構であり、左右板間隔調整機構と左右放射線測定器間隔調整機構が同一の機構であることが好ましい。上面用放射線測定器を上面板に、下面用放射線測定器を下面板に取り付けて固定することにより、上下板間隔調整機構と上下放射線測定器間隔調整機構とを別に設けることなく、上下板間隔調整機構のみで、上面板と下面板との間隔及び上面用放射線測定器の検出面と下面用放射線測定器の検出面との間隔を調整することができる。また、左側面用放射線測定器を左側面板に、右側面用放射線測定器を右側面板に取り付けて固定することにより、左右板間隔調整機構と左右放射線測定器間隔調整機構とを別に設けることなく、左右板間隔調整機構のみで、左側面板と右側面板との間隔及び左側面用放射線測定器の検出面と右側面用放射線測定器の検出面との間隔を調整することができる。 In the present invention, the upper surface radiation measuring instrument and the lower surface radiation measuring instrument are attached to and arranged on the upper surface plate and the lower surface plate, respectively, and the left side radiation measuring instrument and the right side radiation measuring instrument are attached to the left side plate and the right side plate. It is preferable that the upper and lower plate spacing adjusting mechanism and the upper and lower radiation measuring instrument spacing adjusting mechanism are the same mechanism, and the left and right plate spacing adjusting mechanism and the left and right radiation measuring instrument spacing adjusting mechanism are the same mechanism. By attaching the upper surface radiation measuring instrument to the upper surface plate and fixing the lower surface radiation measuring instrument to the lower surface plate, the upper and lower plate spacing adjustment mechanism and the upper and lower radiation measuring instrument spacing adjustment mechanism are not separately provided. The distance between the upper surface plate and the lower surface plate and the distance between the detection surface of the upper surface radiation measuring instrument and the detection surface of the lower surface radiation measuring instrument can be adjusted only by the mechanism. Further, by attaching and fixing the radiation measuring instrument for the left side surface to the left side plate and the radiation measuring instrument for the right side surface to the right side plate, the left and right plate spacing adjusting mechanism and the left and right radiation measuring instrument spacing adjusting mechanism are not separately provided. The distance between the left side plate and the right side plate and the distance between the detection surface of the left side radiation measuring instrument and the detection surface of the right side radiation measuring instrument can be adjusted only by the left and right plate spacing adjusting mechanism.
本発明においては、測定対象物の運搬装置との接続機構を備えることが好ましい。本発明の放射線測定装置では、手に持った測定対象物を測定空間に挿入してもよいが、運搬装置、例えば、ローラーコンベヤ、ベルトコンベヤ等を使用して測定対象物を測定空間に挿入してもよく、手動でも自動でもよい。運搬装置を使用する場合は、運搬装置の測定対象物の載置部と高さや位置を合わせることができるように、本発明の放射線測定装置の高さや位置を調整しやすくするために、本発明の放射線測定装置に、高さ調整機構として、例えば、ねじによる調整機構、ジャッキアップ、リフトアップ等の調整機構を設けてもよく、キャスタ等の移動機構、本発明の放射線測定装置と運搬装置との位置がずれないように両者を固定する固定機構等の接続機構を備えてもよい。 In the present invention, it is preferable to provide a connection mechanism with a transport device for the object to be measured. In the radiation measuring device of the present invention, the measurement object held in the hand may be inserted into the measurement space, but the measurement object is inserted into the measurement space by using a transport device such as a roller conveyor or a belt conveyor. It may be manual or automatic. When the transport device is used, the present invention is made to facilitate the adjustment of the height and position of the radiation measuring device of the present invention so that the height and position of the object to be measured of the transport device can be aligned with the mounting portion of the transport device. As a height adjusting mechanism, for example, an adjusting mechanism using screws, a jack-up, a lift-up, or the like may be provided in the radiation measuring device of the above, and the moving mechanism such as a caster, the radiation measuring device and the transporting device of the present invention A connection mechanism such as a fixing mechanism for fixing the two may be provided so that the positions of the two are not displaced.
本発明の放射線測定装置の一実施形態を図により説明する。図１は、本発明における上面板１を上から見た図である。上面板１は、開口部３を２箇所に有する。また、上面板１には、左右の側面板が進入するための切込部４が形成されている。更に詳しくは、上面板１は、図１の右側を前方、左側を後方、下側を左方、上側を右方とするときに、中心よりも前方の位置と後方の位置に開口部３が形成されている。開口部３の形状は、使用する放射線測定器の検出面の形状に合わせればよく、図１に示す場合は、使用する放射線測定器の検出面の形状が長方形であるため、長方形に形成されている。開口部３を、前方から後方に向かって一列に並べずに、左右方向にずらして形成することにより、２台の放射線測定器を使用して、左右に広い面積を一度に測定することができる。開口部３の個数は、すなわち放射線測定器の個数は、測定対象物の形状、大きさにあわせればよく、１個でもよく、２個以上でもよい。上面板１では、中心部付近に上面板１の左端及び右端から内部に向かって伸びる切込部４が形成されている。この切込部４は、左側面板及び右側面板が、切込部４を通ってそれぞれ左右方向に移動するためのものであり、その形状は、左側面板及び右側面板の形状に合わせればよく、図１に示す場合は、左側面板及び右側面板の形状が長方形であるため、左側面板及び右側面板の幅の板が通る幅の長方形に形成されている。図１では、切込部４が同じ形状及び大きさに形成されているが、左右の切込部のどちらか一方の切込みを深くし、左側面板及び右側面板のどちらか一方の移動距離を大きくして、あるいはどちらか一方だけを移動させて左側面板と右側面板の間隔を調整できるようにしてもよい。図２は、本発明における下面板２を上から見た図である。下面板２は、上面板１と同様に開口部３を２箇所に有し、下面板２における開口部３は、上面板１と下面板２を上下に並べたときに、上面板１における開口部３の位置とずらした位置に形成されている。また、下面板２にも、上面板１と同様に左右の側面板が進入するための切込部４が形成されている。図３は、本発明における左側面板５（ａ）及び右側面板５（ｂ）を側面から見た図である。左側面板（ａ）と右側面板（ｂ）は、開口部６を有し同じ形状をしている。図４は、上面板１に放射線測定器７を取り付けた状態を上から見た図である。放射線測定器７は、放射線測定器７の検出面が開口部３の上方で下を向くように取付部８に取り付けられている。また、左側面板５（ａ）には、放射線測定器７が、放射線測定器７の検出面が開口部６の左側で右側を向くように取付部８に取り付けられ、右側面板５（ｂ）には、放射線測定器７が、放射線測定器７の検出面が開口部６の右側で左側を向くように取付部８に取り付けられている。ガイドレール１０は、左側面板（ａ）と右側面板（ｂ）が横方向に移動できるようにするためのレールである。左側面板（ａ）と右側面板（ｂ）は、下部の突起部がガイドレール１０に挿入され、ガイドレール１０に沿って移動できる。また、上面板１は、４隅をＬ字形の支柱９に接し、支柱９に沿って上下に移動できる。上面板１の中心部１１には、上面板１を上下に移動させる機構を取り付ける。図５は、下面板２に放射線測定器７を取り付けた状態を上から見た図である。放射線測定器７は、放射線測定器７の検出面が開口部３の下方で上を向くように取付部８（上からは見えないため点線で図示）に取り付けられている。各放射線測定器は、一般に販売されているサーベイメーターを使用し、その検出部が放射線測定器７として各板に取り付けられ、本体部は、測定装置の他の箇所に置かれる。検出部の取り付けは、一般にマグネチックスタンドとして販売されている取付具を使用し、各板において測定対象物側と反対側に伸びる支柱を固定し（マグネットでの固定が弱い場合は、溶接等で固定してもよい）、前記支柱に対して横方向に伸びる横棒とを連結し、前記横棒に取り付けたクランプにより検出部の通常手に持つ部分を挟んでねじで固定している。前記支柱と横棒の連結部、並びに前記横棒とクランプの連結部を移動可能とすることにより、検出部を適切な箇所に移動させて検出面を開口部３の位置に配置し、また検出面を開口部３中または開口部３から適切な距離を離して配置することができる。放射線測定器７の取付部は、放射線測定器７が着脱自在であり、放射線測定器７を各板に対して上方向及び横方向に移動できる取付具を使用することが好ましい。 An embodiment of the radiation measuring apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a top view of the top plate 1 in the present invention. The top plate 1 has two openings 3. Further, the upper surface plate 1 is formed with cut portions 4 for the left and right side plates to enter. More specifically, the top plate 1 has openings 3 at positions in front of and behind the center when the right side of FIG. 1 is the front, the left side is the rear, the lower side is the left side, and the upper side is the right side. It is formed. The shape of the opening 3 may be matched to the shape of the detection surface of the radiation measuring instrument to be used. In the case shown in FIG. 1, since the shape of the detection surface of the radiation measuring instrument to be used is rectangular, it is formed in a rectangular shape. There is. By forming the openings 3 by shifting them in the left-right direction instead of arranging them in a line from the front to the back, it is possible to measure a wide area on the left and right at the same time by using two radiation measuring instruments. .. The number of openings 3, that is, the number of radiation measuring instruments, may be one or two or more as long as it matches the shape and size of the object to be measured. In the upper surface plate 1, notches 4 extending inward from the left end and the right end of the upper surface plate 1 are formed near the central portion. The cut portion 4 is for the left side face plate and the right side plate to move in the left-right direction through the cut portion 4, respectively, and the shape thereof may match the shapes of the left side face plate and the right side face plate. In the case shown in 1, since the shapes of the left side plate and the right side plate are rectangular, they are formed in a rectangular width through which the width plates of the left side plate and the right side plate pass. In FIG. 1, the cut portion 4 is formed to have the same shape and size, but the cut portion of either the left or right cut portion is deepened, and the moving distance of either the left side plate or the right side plate is increased. Alternatively, or by moving only one of them, the distance between the left side plate and the right side plate may be adjusted. FIG. 2 is a top view of the bottom plate 2 in the present invention. The lower surface plate 2 has two openings 3 like the upper surface plate 1, and the opening 3 in the lower surface plate 2 is an opening in the upper surface plate 1 when the upper surface plate 1 and the lower surface plate 2 are arranged vertically. It is formed at a position shifted from the position of the portion 3. Further, the lower surface plate 2 is also formed with cut portions 4 for the left and right side plates to enter, similarly to the upper surface plate 1. FIG. 3 is a side view of the left side plate 5 (a) and the right side plate 5 (b) in the present invention. The left side plate (a) and the right side plate (b) have an opening 6 and have the same shape. FIG. 4 is a top view of a state in which the radiation measuring instrument 7 is attached to the top plate 1. The radiation measuring instrument 7 is attached to the mounting portion 8 so that the detection surface of the radiation measuring instrument 7 faces downward above the opening 3. Further, a radiation measuring instrument 7 is attached to the left side plate 5 (a) so that the detection surface of the radiation measuring instrument 7 faces the right side on the left side of the opening 6, and is attached to the right side plate 5 (b). Is attached to the attachment portion 8 so that the detection surface of the radiation measuring instrument 7 faces the left side on the right side of the opening 6. The guide rail 10 is a rail for allowing the left side plate (a) and the right side plate (b) to move laterally. The left side plate (a) and the right side plate (b) can be moved along the guide rail 10 by inserting the lower protrusions into the guide rail 10. Further, the upper surface plate 1 has four corners in contact with the L-shaped support column 9 and can move up and down along the support column 9. A mechanism for moving the top plate 1 up and down is attached to the central portion 11 of the top plate 1. FIG. 5 is a top view of a state in which the radiation measuring instrument 7 is attached to the bottom plate 2. The radiation measuring instrument 7 is attached to the mounting portion 8 (shown by a dotted line because it cannot be seen from above) so that the detection surface of the radiation measuring instrument 7 faces upward below the opening 3. Each radiation measuring instrument uses a survey meter that is generally sold, a detection unit thereof is attached to each plate as a radiation measuring instrument 7, and a main body portion is placed in another part of the measuring device. To attach the detector, use a fixture that is generally sold as a magnetic stand, and fix the columns that extend to the side opposite to the object to be measured on each plate (if the fixing with a magnet is weak, weld it, etc.). It may be fixed), a horizontal bar extending in the lateral direction is connected to the support column, and a portion normally held by the hand of the detection unit is sandwiched by a clamp attached to the horizontal bar and fixed with a screw. By making the connecting portion between the support column and the horizontal bar and the connecting portion between the horizontal bar and the clamp movable, the detection portion is moved to an appropriate position, the detection surface is arranged at the position of the opening 3, and the detection is performed. The surface can be placed in the opening 3 or at an appropriate distance from the opening 3. As the mounting portion of the radiation measuring device 7, it is preferable to use a mounting tool on which the radiation measuring device 7 is detachable and the radiation measuring device 7 can be moved upward and laterally with respect to each plate.
図４では、上面板１の右側寄りに取り付けらえた放射線測定器７の検出面が、前方から移動してくる測定対象物の上面の右端から中心部より少し左側までを測定し、上面板１の左側寄りに取り付けらえた放射線測定器７の検出面が、測定対象物の上面の左端から中心部より少し右側までを測定する。両方の放射線測定器７が測定する面が一部重複しているため、未測定の箇所が生じるのを防ぐことができる。下面板２に取り付けられた放射線測定器７に関しても同様である。また、左側面板５（ａ）に取り付けられた放射線測定器７は、前方から移動してくる測定対象物の左側面を測定し、右側面板５（ｂ）に取り付けられた放射線測定器７は、測定対象物の右側面を測定する。左側面板と右側面板をガイドレール１０に沿って移動させることにより、測定対象物の幅に合わせて、左側面板５（ａ）と右側面板５（ｂ）の間隔を調整することができる。図４では、切込部４を上面板１に設けることにより、左側面板５（ａ）と右側面板５（ｂ）が、すなわち左側の放射線測定器と右側の放射線測定器が、上面板１に取り付けられた２つの放射線測定器の間を移動するように配置されているが、左側面板５（ａ）と右側面板５（ｂ）を上面板１の前方又は後方に配置して、測定対象物が上面板１の下方に到達する前又は後に左側面板５（ａ）と右側面板５（ｂ）の間を通過するようにしてもよい。図４では、同じ大きさの上面板１と下面板２を上下に並べて配置しているが、上面板１と下面板２をずらして配置してもよい。図１、２及び４で示した上面板１及び下面板２の形状並びに放射線測定器の配置にすると、放射線測定装置をコンパクトにし、装置の大きさを小型化できる。図６は、本発明の放射線測定装置Ｅを左側から見た図である。測定対象物は、放射線測定装置Ｅの前方（図６の右側）から上面板１と下面板２の間に挿入され、後方（図６の左側）に移動していく。上面板１は支柱９に沿って移動できるので、測定対象物の厚みに合わせて、上面板１と下面板２の間隔を調整することができる。左側面板５（ａ）及び右側面板５（ｂ）のガイドレール１０は、下面板２の下方に設けられているので、測定対象物の移動を妨げることはない。放射線測定装置Ｅは、装置の下部にキャスタ１５を有するので、自由に移動させることができる。また、ねじにより高さを調整できるストッパー１６を有するので、自由に高さを調整することができる。図７は、上下板間隔調整機構の部分のみを示す図（左側から見た図）である。凸ねじを切った棒１３の先端を上面板１の中心部１１に取り付け、この棒１３を上面板１の上方に固定され内側に凹ねじを切った環状体に通す。これにより、棒１３を回転させながら上下させることにより、上面板１を上下させることができる。下面板２又は上面板１と下面板２の両方を上下させてもよいが、本実施形態では下面板２を固定し上面板１を上下させている。棒１３をユニバーサルジョイントにすると、支柱９に囲まれた上面板１をわずかに傾けることができるので、板状の測定対象物に反り等があるばあい、その形状に追随することができ、測定対象物の挿入、移動が容易になる。図８は、左右板間隔調整機構の部分のみを示す図（前から見た図）である。凸ねじを切った棒１４（ａ）の先端を左側面板５（ａ）の下部の中心部１２（ａ）に取り付け、凸ねじを切った棒１４（ｂ）の先端を右側面板５（ｂ）の下部の中心部１２（ｂ）にそれぞれ取り付け、それぞれの棒を左側面板５（ａ）の左側に固定され内側に凹ねじを切った環状体及び右側面板５（ｂ）の右側に固定され内側に凹ねじを切った環状体に通す。これにより、棒１４（ａ）、棒１４（ｂ）を回転させながら移動させることにより、左側面板（ａ）と右側面板（ｂ）を左右に移動させることができる。図９〜１１は、測定対象物が上面板１と下面板２の間に入りやすくするために、上面板１と下面板２の間に測定対象物導入機構を設けた例である。図９及び１０では、上面板１の前端部近傍と後端部近傍にフリーベアリング１７を取り付けている。図９は、その状態を横から見た図であり、図１０は、その状態を上から見た図である。フリーベアリング１７により、上面板１と測定対象物との間の滑りがよくなることにより、フリーベアリング１７を前端部近傍に設置すると測定対象物を上面板１と下面板２の間に導入（挿入）しやすくなる。また、さらに、フリーベアリング１７を後端部近傍に設置すると測定対象物が上面板１と下面板２の間から排出されやすくなる。その結果、測定対象物が後端部近傍で引っ掛かりにくくなるので、測定対象物が導入（挿入）しやすくなる。また、例えば、足場板は表面が平滑でない場合があり、このような場合、フリーベアリング１７により上面板１と測定対象物の表面との間に一定の隙間をつくり、この隙間も考慮して測定器の検出面の位置を設定することにより、検出面と測定対象物の表面との距離をより適切にできる。図示はしていないが、フリーベアリングは下面板にも取り付けても測定対象物と下面板の間で同様な効果を期待できる。また、ローラーベアリングや車輪でもフリーベアリングと類似の機能を果たすことができる。また、図１１は、測定対象物導入機構として上面板１の前端部と後端部に反り１８を形成した例である。これにより、図９及び１０の場合と同様に測定対象物が導入（挿入）しやすくなる。図示はしていないが、反りを上面板と同様に下面板に形成してもよい。また、フリーベアリング１７の先端部側及び／又は後端部側に反りを形成してもよい。また、図６の放射線測定装置Ｅにおいて、各放射線測定器で測定された測定値を表示する表示部１９を測定装置Ｅの上部に設置してもよく、測定値が規定の数値を越えた場合に警報を発するような警報装置を設けてもよい。表示部１９は、４個の測定器のそれぞれの測定値が前方から測定員に見えるように設置されている。警報装置を設けることにより一人で測定作業を行っても汚染に気づくことが容易になる。使用する測定器自体に警報機能がある場合は、別途警報装置を設けなくてもこれを利用することができる。測定装置Ｅの下部の棚には、放射線測定器の本体部２０を置いてもよい。 In FIG. 4, the detection surface of the radiation measuring instrument 7 attached to the right side of the top plate 1 measures from the right end of the upper surface of the object to be measured moving from the front to a little left side of the center, and the top plate 1 The detection surface of the radiation measuring instrument 7 attached to the left side of the measuring object measures from the left end of the upper surface of the object to be measured to a little to the right of the center. Since the surfaces measured by both radiation measuring instruments 7 partially overlap, it is possible to prevent unmeasured points from occurring. The same applies to the radiation measuring instrument 7 attached to the bottom plate 2. Further, the radiation measuring instrument 7 attached to the left side plate 5 (a) measures the left side surface of the object to be measured moving from the front, and the radiation measuring instrument 7 attached to the right side plate 5 (b) measures. Measure the right side of the object to be measured. By moving the left side plate and the right side plate along the guide rail 10, the distance between the left side plate 5 (a) and the right side plate 5 (b) can be adjusted according to the width of the object to be measured. In FIG. 4, by providing the cut portion 4 on the upper surface plate 1, the left side surface plate 5 (a) and the right side surface plate 5 (b), that is, the left side radiation measuring instrument and the right side radiation measuring instrument are placed on the upper surface plate 1. Although it is arranged so as to move between the two attached radiation measuring instruments, the left side plate 5 (a) and the right side plate 5 (b) are arranged in front of or behind the top plate 1 to be measured. May pass between the left side plate 5 (a) and the right side plate 5 (b) before or after reaching below the top plate 1. In FIG. 4, the upper surface plate 1 and the lower surface plate 2 having the same size are arranged side by side in the vertical direction, but the upper surface plate 1 and the lower surface plate 2 may be arranged in a staggered manner. When the shapes of the upper surface plate 1 and the lower surface plate 2 and the arrangement of the radiation measuring instruments shown in FIGS. 1, 2 and 4 are arranged, the radiation measuring device can be made compact and the size of the device can be reduced. FIG. 6 is a view of the radiation measuring device E of the present invention viewed from the left side. The object to be measured is inserted between the upper surface plate 1 and the lower surface plate 2 from the front (right side in FIG. 6) of the radiation measuring device E, and moves to the rear (left side in FIG. 6). Since the top plate 1 can move along the support column 9, the distance between the top plate 1 and the bottom plate 2 can be adjusted according to the thickness of the object to be measured. Since the guide rails 10 of the left side plate 5 (a) and the right side plate 5 (b) are provided below the bottom plate 2, they do not hinder the movement of the object to be measured. Since the radiation measuring device E has a caster 15 at the lower part of the device, it can be freely moved. Further, since the stopper 16 has a stopper 16 whose height can be adjusted by a screw, the height can be freely adjusted. FIG. 7 is a diagram (viewed from the left side) showing only a portion of the upper and lower plate spacing adjusting mechanism. The tip of the convexly threaded rod 13 is attached to the central portion 11 of the upper surface plate 1, and the rod 13 is passed through an annular body fixed above the upper surface plate 1 and internally threaded. As a result, the upper surface plate 1 can be moved up and down by moving the rod 13 up and down while rotating it. The bottom plate 2 or both the top plate 1 and the bottom plate 2 may be moved up and down, but in the present embodiment, the bottom plate 2 is fixed and the top plate 1 is moved up and down. When the rod 13 is a universal joint, the upper surface plate 1 surrounded by the columns 9 can be slightly tilted, so that if the plate-shaped object to be measured has a warp or the like, it can follow the shape and measure. It becomes easy to insert and move the object. FIG. 8 is a diagram (viewed from the front) showing only a portion of the left-right plate spacing adjusting mechanism. The tip of the convexly threaded rod 14 (a) is attached to the lower center portion 12 (a) of the left side plate 5 (a), and the tip of the convexly threaded rod 14 (b) is attached to the right side plate 5 (b). Each rod is fixed to the left side of the left side plate 5 (a) and fixed to the right side of the right side plate 5 (b) and an annular body with a concave screw inside. Pass it through an annular body with a concave thread. As a result, the left side plate (a) and the right side plate (b) can be moved left and right by moving the rods 14 (a) and 14 (b) while rotating them. 9 to 11 are examples in which a measurement object introduction mechanism is provided between the upper surface plate 1 and the lower surface plate 2 in order to facilitate the measurement object from entering between the upper surface plate 1 and the lower surface plate 2. In FIGS. 9 and 10, free bearings 17 are attached near the front end portion and the rear end portion of the top plate 1. FIG. 9 is a side view of the state, and FIG. 10 is a top view of the state. The free bearing 17 improves the sliding between the upper surface plate 1 and the object to be measured. Therefore, when the free bearing 17 is installed near the front end portion, the object to be measured is introduced (inserted) between the upper surface plate 1 and the lower surface plate 2. It will be easier to do. Further, when the free bearing 17 is installed near the rear end portion, the object to be measured is easily discharged from between the upper surface plate 1 and the lower surface plate 2. As a result, the object to be measured is less likely to be caught near the rear end portion, so that the object to be measured can be easily introduced (inserted). Further, for example, the surface of the scaffolding plate may not be smooth. In such a case, the free bearing 17 creates a constant gap between the top plate 1 and the surface of the object to be measured, and the measurement is performed in consideration of this gap. By setting the position of the detection surface of the instrument, the distance between the detection surface and the surface of the object to be measured can be made more appropriate. Although not shown, the same effect can be expected between the object to be measured and the bottom plate even if the free bearing is attached to the bottom plate. In addition, roller bearings and wheels can perform the same function as free bearings. Further, FIG. 11 shows an example in which warpage 18 is formed at the front end portion and the rear end portion of the upper surface plate 1 as the measurement object introduction mechanism. This makes it easier to introduce (insert) the object to be measured as in the cases of FIGS. 9 and 10. Although not shown, the warp may be formed on the lower surface plate in the same manner as the upper surface plate. Further, a warp may be formed on the front end side and / or the rear end side of the free bearing 17. Further, in the radiation measuring device E of FIG. 6, a display unit 19 for displaying the measured values measured by each radiation measuring device may be installed above the measuring device E, and the measured value exceeds a specified value. An alarm device may be provided to issue an alarm. The display unit 19 is installed so that the measured values of the four measuring instruments can be seen by the measuring staff from the front. By providing an alarm device, it becomes easy to notice the contamination even if the measurement work is performed alone. If the measuring instrument to be used has an alarm function, it can be used without a separate alarm device. The main body 20 of the radiation measuring instrument may be placed on the shelf below the measuring device E.
放射線測定装置Ｅにおいては、測定対象物の厚みとほぼ同じくらいに上面板１と下面板２の間隔を調整し、測定対象物の幅とほぼ同じくらいに左側面板５（ａ）と右側面板５（ｂ）の間隔を調整する。すなわち、測定対象物が、上面板１、下面板２、左側面板５（ａ）及び右側面板５（ｂ）にほぼ接する程度にそれぞれの間隔を調整する。上面板１、下面板２、左側面板５（ａ）及び右側面板５（ｂ）のそれぞれが測定対象物に接したときに、検出面が適切な測定距離となる位置に放射線測定器７を取り付けておけば、上面板１、下面板２、左側面板５（ａ）及び右側面板５（ｂ）の間の測定空間に測定対象物を通すことにより、測定対象物の表面から適切な距離で測定することができる。例えば、測定対象物の表面から５ｍｍ以内の距離での測定が必要な場合、放射線測定器７を、その検出面が上面板１、下面板２、左側面板５（ａ）及び右側面板５（ｂ）それぞれの測定対象物側の面から５ｍｍ以内の位置になるように取り付けておけば、前記測定空間に測定対象物を通すだけで、適切な距離での測定が行える。また、例えば、図９及び１０に示される上面板１を使用した場合、上面板１の測定対象物側に出ているフリーベアリングの部分だけ上面板１と測定対象物の距離が離れるので、この距離を含めて、検出面と測定対象物表面との距離が５ｍｍ以内となるように放射線測定器７を取り付ければよい。下面板２並びに左右側面板５（ａ）及び（ｂ）の場合も同様であり、各板を測定対象物からの距離を設定する基準として、放射線測定器７を取り付けることができる。放射線測定装置Ｅにおいては、放射線測定器７が、上面板１、下面板２、左側面板５（ａ）及び右側面板５（ｂ）のそれぞれに取り付けてあるので、上面板１と下面板２の間隔を調整すれば、上面の放射線測定器７と下面の放射線測定器７の間隔を調整でき、左側面板５（ａ）と右側面板５（ｂ）の間隔を調整すれば、左側の放射線測定器７と右側の放射線測定器７の間隔を調整できる。したがって、上下板間隔調整機構と上下放射線測定器間隔調整機構が同一の機構であり、左右板間隔調整機構と左右放射線測定器間隔調整機構が同一の機構となっている。図１２は、放射線測定装置Ｅに測定対象物Ａの運搬装置であるローラーコンベヤ２１を接続した状態を示す模式図である。放射線測定装置Ｅは、高さを調整できるストッパー１６によりローラーコンベヤ２１の高さと合わせることができる。ローラーコンベヤ２１と接続することにより、手動でも簡易に測定対象物を測定空間に導入することができる。また、自動で測定対象物を測定空間に導入するようにしてもよい。放射線測定装置Ｅは、手で操作できる既存の放射線測定器７を取り付ける簡易な構造なので、放射線測定器７を取り付けた状態でも自由に移動でき、あるいは放射線測定器７をはずした状態で自由に移動させた後、放射線測定器７を取り付けることもできる。さらに、既存の運搬装置とも自由に組み合わせることができる。 In the radiation measuring device E, the distance between the upper surface plate 1 and the lower surface plate 2 is adjusted to be approximately the same as the thickness of the object to be measured, and the left side plate 5 (a) and the right side plate 5 are adjusted to be approximately the same as the width of the object to be measured. Adjust the interval of (b). That is, the intervals between the objects to be measured are adjusted so as to be substantially in contact with the upper surface plate 1, the lower surface plate 2, the left side surface plate 5 (a), and the right side surface plate 5 (b). When each of the top plate 1, the bottom plate 2, the left side plate 5 (a) and the right side plate 5 (b) comes into contact with the object to be measured, the radiation measuring instrument 7 is attached at a position where the detection surface has an appropriate measurement distance. By setting the measurement object through the measurement space between the top plate 1, the bottom plate 2, the left side plate 5 (a) and the right side plate 5 (b), the measurement object is measured at an appropriate distance from the surface of the measurement object. can do. For example, when it is necessary to measure at a distance of 5 mm or less from the surface of the object to be measured, the radiation measuring instrument 7 has a detection surface of a top plate 1, a bottom plate 2, a left side plate 5 (a) and a right side plate 5 (b). ) If the measurement object is attached so as to be within 5 mm from the surface on the measurement object side, the measurement can be performed at an appropriate distance simply by passing the measurement object through the measurement space. Further, for example, when the upper surface plate 1 shown in FIGS. 9 and 10 is used, the distance between the upper surface plate 1 and the object to be measured is separated only by the portion of the free bearing protruding on the side of the upper surface plate 1 to be measured. The radiation measuring instrument 7 may be attached so that the distance between the detection surface and the surface of the object to be measured is within 5 mm including the distance. The same applies to the bottom plate 2 and the left and right side plates 5 (a) and (b), and the radiation measuring instrument 7 can be attached to each plate as a reference for setting the distance from the object to be measured. In the radiation measuring device E, since the radiation measuring device 7 is attached to each of the top plate 1, the bottom plate 2, the left side plate 5 (a) and the right side plate 5 (b), the top plate 1 and the bottom plate 2 By adjusting the distance, the distance between the radiation measuring device 7 on the upper surface and the radiation measuring device 7 on the lower surface can be adjusted, and by adjusting the distance between the left side plate 5 (a) and the right side plate 5 (b), the radiation measuring device on the left side can be adjusted. The distance between 7 and the radiation measuring instrument 7 on the right side can be adjusted. Therefore, the upper and lower plate spacing adjustment mechanism and the upper and lower radiation measuring instrument spacing adjusting mechanism are the same mechanism, and the left and right plate spacing adjusting mechanism and the left and right radiation measuring instrument spacing adjusting mechanism are the same mechanism. FIG. 12 is a schematic view showing a state in which the roller conveyor 21, which is a transport device for the measurement object A, is connected to the radiation measuring device E. The radiation measuring device E can be adjusted to the height of the roller conveyor 21 by the stopper 16 whose height can be adjusted. By connecting to the roller conveyor 21, the object to be measured can be easily introduced into the measurement space manually. Further, the object to be measured may be automatically introduced into the measurement space. Since the radiation measuring device E has a simple structure to which the existing radiation measuring device 7 that can be operated by hand is attached, it can be freely moved even with the radiation measuring device 7 attached, or can be freely moved with the radiation measuring device 7 removed. After that, the radiation measuring instrument 7 can be attached. Furthermore, it can be freely combined with existing transportation devices.
本発明の放射線測定器取付装置は、放射線測定器を取り付ける放射線測定器取付装置であって、開口部を有する上面板、下面板、左側面板及び右側面板、前記上面板に設けられた、上面用放射線測定器をその検出面が前記上面板の開口部の上方又は前記開口部中に位置するように着脱自在に取り付ける取付部、前記下面板に設けられた、下面用放射線測定器をその検出面が前記下面板の開口部の下方又は前記開口部中に位置するように着脱自在に取り付ける取付部、前記左側面板に設けられた、左側面用放射線測定器をその検出面が前記左側面板の開口部の左側又は前記開口部中に位置するように着脱自在に取り付ける取付部、前記右側面板に設けられた、右側面用放射線測定器をその検出面が前記右側面板の開口部の右側又は前記開口部中に位置するように着脱自在に取り付ける取付部、前記上面板と前記下面板との間隔を調整することにより、前記上面板と前記下面板とにそれぞれ取り付けられた上面用放射線測定器と下面用放射線測定器との間隔を調整する上下間隔調整機構、及び前記左側面板と前記右側面板との間隔を調整することにより、前記左側面板と前記右側面板とにそれぞれ取り付けられた左側面用放射線測定器と右側面用放射線測定器との間隔を調整する左右間隔調整機構、を備えることを特徴とする。本発明の放射線測定器取付装置における各構造、すなわち各発明特定事項については、上記の本発明の放射線測定装置において対応する各発明特定事項と同じである。本発明の放射線測定器取付装置は、取付装置として製造し、販売することができ、購入者は既存の放射線測定器を取り付けて放射線測定装置として使用することができる。 The radiation measuring device mounting device of the present invention is a radiation measuring device mounting device for mounting a radiation measuring device, and is provided on a top plate, a bottom plate, a left side plate and a right side plate having an opening, and an upper surface plate. A mounting portion for attaching and detaching the radiation measuring instrument so that its detection surface is located above or in the opening of the upper surface plate, and a radiation measuring instrument for the lower surface provided on the lower surface plate as its detection surface. A mounting portion that is detachably attached so as to be located below or in the opening of the lower surface plate, and a radiation measuring instrument for the left side surface provided on the left side plate whose detection surface is the opening of the left side plate. A mounting part that is detachably attached so as to be located on the left side of the portion or in the opening, and a radiation measuring instrument for the right side provided on the right side plate whose detection surface is on the right side of the opening of the right side plate or the opening. A mounting part that is detachably attached so as to be located in the part, and a radiation measuring instrument for the upper surface and a lower surface that are attached to the upper surface plate and the lower surface plate by adjusting the distance between the upper surface plate and the lower surface plate, respectively. Radiation measurement for the left side surface attached to the left side surface plate and the right side surface plate by adjusting the vertical interval adjusting mechanism for adjusting the distance between the left side surface plate and the right side surface plate. It is characterized by including a left-right spacing adjusting mechanism for adjusting the spacing between the device and the radiation measuring device for the right side surface. Each structure of the radiation measuring device mounting device of the present invention, that is, each invention specifying item is the same as each invention specifying item corresponding to the above-mentioned radiation measuring device of the present invention. The radiation measuring instrument mounting device of the present invention can be manufactured and sold as a mounting device, and the purchaser can mount an existing radiation measuring device and use it as a radiation measuring device.
本発明の放射線測定装置及び放射線測定器取付装置は、放射線管理区域内で使用された物品を非管理区域へ搬出する場合のサーベイに好適に使用することができる。特に数量の多い足場等のサーベイに好適に使用することができ、その他の板状の物品のサーベイに好適に使用することができる。 The radiation measuring device and the radiation measuring device mounting device of the present invention can be suitably used for a survey when the articles used in the radiation controlled area are carried out to the uncontrolled area. In particular, it can be suitably used for surveys of scaffolds and the like in large quantities, and can be suitably used for surveys of other plate-shaped articles.
１ 上面板
２ 下面板
３ 開口部
４ 切込部
５（ａ） 左側面部
５（ｂ） 右側面部
６ 開口部
７ 放射線測定器
８ 取付部
９ 支柱
１０ ガイドレール
１１ 棒１３の取付部
１２（ａ） 棒１４（ａ）の取付部（１２（ｂ）：棒１４（ｂ）の取付部は図示せず）
１３ 凸ねじを切った棒
１４（ａ） 凸ねじを切った棒（左側）
１４（ｂ） 凸ねじを切った棒（右側）
１５ キャスタ
１６ 高さ調整ストッパ
１７ フリーベアリング
１８ 反り部
１９ 表示部
２０ 放射線測定器本体部
２１ ローラーコンベヤ
Ａ 測定対象物
Ｅ 放射線測定装置
1 Top plate 2 Bottom plate 3 Opening 4 Notch 5 (a) Left side 5 (b) Right side 6 Opening 7 Radiation measuring instrument 8 Mounting 9 Strut 10 Guide rail 11 Rod 13 mounting 12 (a) Mounting part of rod 14 (a) (12 (b): Mounting part of rod 14 (b) is not shown)
13 Convex threaded rod 14 (a) Convex threaded rod (left side)
14 (b) Convex threaded rod (right side)
15 Caster 16 Height adjustment stopper 17 Free bearing 18 Warped part 19 Display part 20 Radiation measuring instrument main body 21 Roller conveyor A Measuring object E Radiation measuring device
Claims (5)
上面用放射線測定器、下面用放射線測定器、左側面用放射線測定器及び右側面用放射線測定器を備え、
上面用放射線測定器が、その検出面が前記上面板の開口部の上方又は前記開口部中において、下方を向くように配置され、
下面用放射線測定器が、その検出面が前記下面板の開口部の下方又は前記開口部中において、上方を向くように配置され、
左側面用放射線測定器が、その検出面が前記左側面板の開口部の左側又は前記開口部中において、右側を向くように配置され、
右側面用放射線測定器が、その検出面が前記右側面板の開口部の右側又は前記開口部中において、左側を向くように配置され、
前記上面板と前記下面板との間隔を調整する上下板間隔調整機構、
前記上面用放射線測定器と前記下面用放射線測定器との間隔を調整する上下放射線測定器間隔調整機構、
前記左側面板と前記右側面板との間隔を調整する左右板間隔調整機構、及び
前記左側面用放射線測定器と前記右側面用放射線測定器との間隔を調整する左右放射線測定器間隔調整機構を更に備え、
測定対象物を前記上面板、下面板、左側面板及び右側面板の間を通過させることにより前記測定対象物の汚染の程度を測定する放射線測定装置。 A top plate, a bottom plate, a left side plate and a right side plate having an opening, and a radiation measuring instrument for the upper surface, a radiation measuring instrument for the lower surface, a radiation measuring instrument for the left surface, and a radiation measuring instrument for the right side
The radiation measuring instrument for the upper surface is arranged so that its detection surface faces downward in the opening above or in the opening of the upper surface plate.
The radiation measuring instrument for the lower surface is arranged so that its detection surface faces upward below the opening of the lower surface plate or in the opening.
The radiation measuring instrument for the left side surface is arranged so that its detection surface faces the right side in the left side of the opening of the left side plate or in the opening.
The radiation measuring instrument for the right side surface is arranged so that its detection surface faces the left side in the right side of the opening of the right side plate or in the opening.
Upper and lower plate spacing adjustment mechanism that adjusts the spacing between the top plate and the bottom plate,
Upper and lower radiation measuring instrument spacing adjusting mechanism for adjusting the distance between the upper surface radiation measuring instrument and the lower surface radiation measuring instrument,
Further, a left and right plate spacing adjusting mechanism for adjusting the distance between the left side plate and the right side plate, and a left and right radiation measuring device spacing adjusting mechanism for adjusting the distance between the left side radiation measuring device and the right side radiation measuring device are further provided. Prepare,
A radiation measuring device that measures the degree of contamination of the object to be measured by passing the object to be measured between the top plate, the bottom plate, the left side plate, and the right side plate.
開口部を有する上面板、下面板、左側面板及び右側面板、
前記上面板に設けられた、上面用放射線測定器をその検出面が前記上面板の開口部の上方又は前記開口部中に位置するように着脱自在に取り付ける取付部、
前記下面板に設けられた、下面用放射線測定器をその検出面が前記下面板の開口部の下方又は前記開口部中に位置するように着脱自在に取り付ける取付部、
前記左側面板に設けられた、左側面用放射線測定器をその検出面が前記左側面板の開口部の左側又は前記開口部中に位置するように着脱自在に取り付ける取付部、
前記右側面板に設けられた、右側面用放射線測定器をその検出面が前記右側面板の開口部の右側又は前記開口部中に位置するように着脱自在に取り付ける取付部、
前記上面板と前記下面板との間隔を調整することにより、前記上面板と前記下面板とにそれぞれ取り付けられた上面用放射線測定器と下面用放射線測定器との間隔を調整する上下間隔調整機構、及び
前記左側面板と前記右側面板との間隔を調整することにより、前記左側面板と前記右側面板とにそれぞれ取り付けられた左側面用放射線測定器と右側面用放射線測定器との間隔を調整する左右間隔調整機構、
を備える放射線測定器取付装置。 A radiation measuring instrument mounting device that mounts a radiation measuring instrument.
Top plate, bottom plate, left side plate and right side plate with openings,
A mounting portion provided on the top plate for detachably attaching a radiation measuring instrument for the top surface so that the detection surface is located above or in the opening of the top plate.
A mounting portion provided on the lower surface plate for detachably attaching the radiation measuring instrument for the lower surface so that the detection surface thereof is located below the opening of the lower surface plate or in the opening.
A mounting portion provided on the left side plate, which is detachably attached so that the detection surface thereof is located on the left side of the opening of the left side plate or in the opening.
A mounting portion for attaching and detaching a radiation measuring instrument for the right side surface provided on the right side plate so that the detection surface is located on the right side of the opening of the right side plate or in the opening.
A vertical spacing adjusting mechanism that adjusts the distance between the upper surface radiation measuring instrument and the lower surface radiation measuring instrument attached to the upper surface plate and the lower surface plate by adjusting the distance between the upper surface plate and the lower surface plate. , And by adjusting the distance between the left side plate and the right side plate, the distance between the left side surface plate and the right side surface radiation measuring instrument attached to the left side surface plate and the right side surface plate is adjusted. Left / right spacing adjustment mechanism,
Radiation measuring instrument mounting device.
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