JP2647267B2 - Body surface contamination monitor - Google Patents
Body surface contamination monitorInfo
- Publication number
- JP2647267B2 JP2647267B2 JP40260890A JP40260890A JP2647267B2 JP 2647267 B2 JP2647267 B2 JP 2647267B2 JP 40260890 A JP40260890 A JP 40260890A JP 40260890 A JP40260890 A JP 40260890A JP 2647267 B2 JP2647267 B2 JP 2647267B2
- Authority
- JP
- Japan
- Prior art keywords
- surface contamination
- radiation detector
- body surface
- arm
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Measurement Of Radiation (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、原子力施設に設置され
る体表面汚染モニタ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body surface contamination monitor installed in a nuclear facility.
【0002】[0002]
【従来の技術】一般に原子力発電所等の原子力施設に
は、人体表面の放射能汚染を測定する体表面汚染モニタ
装置が放射線管理区域の出入口などに設置されている。2. Description of the Related Art Generally, in a nuclear facility such as a nuclear power plant, a body surface contamination monitoring device for measuring radioactive contamination on the surface of a human body is installed at an entrance of a radiation control area or the like.
【0003】従来、この種の体表面汚染モニタ装置は図
5に示すように構成され、モニタ本体1の内部には被測
定者Pの各部を放射能測定するための測定室2が形成さ
れている。この測定室2の下部と前面部及び背面部には
複数の放射線検出器3,4,5,6,7,8,9,1
0,11が配設されており、これらの放射線検出器3〜
11で被測定者Pの頭部を除く各部(胴部、足部、腕部
等)の放射能を測定するように構成されている。Conventionally, this type of body surface contamination monitoring device is configured as shown in FIG. 5, and a monitor room 1 for measuring radioactivity of each part of a subject P is formed inside a monitor main body 1. I have. A plurality of radiation detectors 3, 4, 5, 6, 7, 8, 9, 1 are provided at the lower part of the measurement chamber 2 and at the front part and the back part.
0, 11 are provided, and these radiation detectors 3 to
11 is configured to measure the radioactivity of each part (the torso, the feet, the arms, etc.) except the head of the subject P.
【0004】また、測定室2の上部に被測定者Pの頭部
を放射能測定する放射線検出器12が配設されている。
この放射線検出器12はパンタグラフ機構13を介して
モニタ本体1の上部固定板14に支持されており、パン
タグラフ機構13をワイヤ15を介して駆動機構16に
より開閉駆動すると放射線検出器12が上下方向に移動
するようになっている。なお、放射線検出器12の下部
には被測定者Pの頭部を検出する頭部検出器17が設け
られており、この頭部検出器17で被測定者Pの頭部が
検出されると放射線検出器12の移動が停止するように
なっている。[0004] A radiation detector 12 for measuring the radioactivity of the head of the person P to be measured is disposed above the measurement room 2.
The radiation detector 12 is supported by an upper fixed plate 14 of the monitor main body 1 via a pantograph mechanism 13. When the pantograph mechanism 13 is driven to open and close by a drive mechanism 16 via a wire 15, the radiation detector 12 moves up and down. It is designed to move. Note that a head detector 17 for detecting the head of the subject P is provided below the radiation detector 12. When the head detector 17 detects the head of the subject P, the head detector 17 detects the head of the subject P. The movement of the radiation detector 12 is stopped.
【0005】ところで、このように構成される従来の体
表面汚染モニタ装置では、測定室2の上部に配設された
放射線検出器12がモニタ本体1の上部固定板14にパ
ンタグラフ機構13を介して支持されているため、モニ
タ本体1の高さが高くなり、例えば被測定者Pの最大身
長を 190cmとした場合には230 〜240cm 程度の高さとな
る。このため、このような体表面汚染モニタ装置を原子
力施設に設置した場合には、原子力施設の天井高さは通
常260 〜270cm 程度であるため、モニタ本体1の上部か
ら天井までのスペースが狭くなり、据付作業や保守作業
に困難性をきたすという問題があった。By the way, in the conventional body surface contamination monitoring device configured as described above, the radiation detector 12 disposed above the measuring chamber 2 is connected to the upper fixing plate 14 of the monitor main body 1 via the pantograph mechanism 13. Since the monitor body 1 is supported, the height of the monitor main body 1 is increased. For example, when the maximum height of the subject P is 190 cm, the height is about 230 to 240 cm. For this reason, when such a body surface contamination monitoring device is installed in a nuclear facility, the ceiling height of the nuclear facility is usually about 260 to 270 cm, and the space from the top of the monitor body 1 to the ceiling becomes narrow. However, there is a problem that the installation work and the maintenance work are difficult.
【0006】[0006]
【発明が解決しようとする課題】本発明は上記のような
点に鑑みてなされたもので、その目的はモニタ本体の高
さを低くすることができ、据付作業および保守作業等を
容易に行うことのできる体表面汚染モニタ装置を提供し
ようとするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to reduce the height of a monitor main body and to easily perform installation work and maintenance work. It is an object of the present invention to provide a body surface contamination monitoring device capable of performing the following.
【0007】[0007]
【課題を解決するための手段】上記課題を解決するため
に本発明は、被測定者の各部を放射能測定するための測
定室を有するモニタ本体と、上記測定室の周囲に配設さ
れた複数の放射線検出器と、これらの放射線検出器のう
ち上記測定室の上部に配設された放射線検出器を支持す
るアームと、このアームを上下方向に駆動する駆動機構
とを具備したものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a monitor body having a measurement room for measuring the radioactivity of each part of a person to be measured, and a monitor body provided around the measurement room. A radiation detector comprising: a plurality of radiation detectors; an arm for supporting the radiation detector, which is disposed above the measurement chamber among the radiation detectors; and a driving mechanism for driving the arm in a vertical direction. .
【0008】[0008]
【作用】上記の構成によると、測定室の上部に配設され
た放射線検出器をパンタグラフ機構を介してモニタ本体
の上部固定板に支持する必要がないので、モニタ本体の
高さを低くすることができる。According to the above construction, it is not necessary to support the radiation detector disposed above the measurement chamber on the upper fixed plate of the monitor main body via the pantograph mechanism, so that the height of the monitor main body can be reduced. Can be.
【0009】[0009]
【実施例】以下、本発明の一実施例を図1を参照して説
明する。An embodiment of the present invention will be described below with reference to FIG.
【0010】図1において、1はモニタ本体、2は測定
室、3〜12は放射線検出器、17は頭部検出器であ
り、これらは第5図に示したものと同一のものである。
また、18は測定室2の上部に配設された放射線検出器
12を支持するアーム、19はアーム18を上下方向に
駆動する駆動機構であり、この駆動機構19はアーム1
8を支持する支持部材20と、この支持部材20を上下
方向に移動させるワイヤ21と、このワイヤ21を旋回
駆動する駆動プーリ22と、この駆動プーリ22をベル
ト23を介して駆動するモータ24とから構成されてい
る。なお、図中25は支持部材20を上下方向にガイド
するガイド部材である。In FIG. 1, 1 is a monitor main body, 2 is a measurement room, 3 to 12 are radiation detectors, and 17 is a head detector, which are the same as those shown in FIG.
Reference numeral 18 denotes an arm that supports the radiation detector 12 disposed above the measurement chamber 2. Reference numeral 19 denotes a driving mechanism that drives the arm 18 in the vertical direction.
8, a wire 21 for moving the support member 20 in the vertical direction, a drive pulley 22 for rotating the wire 21 and a motor 24 for driving the drive pulley 22 via a belt 23. It is composed of In the drawing, reference numeral 25 denotes a guide member for guiding the support member 20 in the vertical direction.
【0011】上記のように構成される体表面汚染モニタ
装置では、駆動機構19によりアーム18を上下方向に
駆動すると、アーム18に支持された放射線検出器12
が上下方向に移動する。従って、本実施例では測定室2
の上部に配設された放射線検出器12をモニタ本体1の
上部固定板にパンタグラフ機構を介して支持する必要が
ないので、モニタ本体1の高さを低くすることができ
る。これによりモニタ本体1を原子力施設に設置しても
モニタ本体1の上部から天井までのスペースを拡くとる
ことができるので、モニタ本体1を容易に据え付けるこ
とができると共に本装置を容易に据え付けることができ
る。In the body surface contamination monitoring device configured as described above, when the driving mechanism 19 drives the arm 18 in the vertical direction, the radiation detector 12 supported by the arm 18 is moved.
Moves up and down. Therefore, in this embodiment, the measurement chamber 2
It is not necessary to support the radiation detector 12 disposed above the monitor body 1 on the upper fixing plate of the monitor main body 1 via a pantograph mechanism, so that the height of the monitor main body 1 can be reduced. As a result, even if the monitor main body 1 is installed in a nuclear facility, the space from the upper part of the monitor main body 1 to the ceiling can be increased, so that the monitor main body 1 can be easily installed and the present apparatus can be easily installed. Can be.
【0012】なお、本発明は上記実施例に限定されるも
のではない。例えば上記実施例ではワイヤ21を旋回駆
動してアーム18を上下方向に移動させるようにした
が、図2に示すようにアーム18をスライド部材26に
取り付け、このスライド部材26をボールネジ機構27
により駆動してアーム18を上下方向に移動させるよう
にしてもよい。さらに、前記実施例ではアーム18を測
定室2の背面側に設けたが、図3に示すようにアーム1
8を測定室2の前面側に設けてもよい。The present invention is not limited to the above embodiment. For example, in the above embodiment, the arm 21 is moved in the vertical direction by driving the wire 21 to pivot, but as shown in FIG. 2, the arm 18 is attached to the slide member 26, and the slide member 26 is attached to the ball screw mechanism 27.
To move the arm 18 in the vertical direction. Further, in the above embodiment, the arm 18 is provided on the rear side of the measurement chamber 2, but as shown in FIG.
8 may be provided on the front side of the measurement chamber 2.
【0013】また、前記実施例では放射線検出器12を
1本のアーム18で支持したが、図4に示すように放射
線検出器12を2本のアーム18で支持するようにして
もよい。Although the radiation detector 12 is supported by one arm 18 in the above embodiment, the radiation detector 12 may be supported by two arms 18 as shown in FIG.
【0014】[0014]
【発明の効果】以上説明したように本発明は、被測定者
の各部を放射能測定するための測定室を有するモニタ本
体と、上記測定室の周囲に配設された複数の放射線検出
器と、これらの放射線検出器のうち上記測定室の上部に
配設された放射線検出器を支持するアームと、このアー
ムを上下方向に昇降駆動する駆動機構とを具備したもの
である。従って、測定室の上部に配設された放射線検出
器をパンタグラフ機構を介してモニタ本体の上部固定板
に支持する必要がないので、モニタ本体の高さを低くす
ることができ、これによりモニタ本体の上部から天井ま
でのスペースを拡くとることができるので、モニタ本体
を容易に据え付けることができると共に保守作業を容易
に行うことができる。As described above, the present invention relates to a monitor main body having a measurement room for measuring the radioactivity of each part of a person to be measured, and a plurality of radiation detectors arranged around the measurement room. And an arm for supporting the radiation detector disposed above the measurement chamber, and a drive mechanism for vertically driving the arm. Therefore, it is not necessary to support the radiation detector disposed above the measurement chamber on the upper fixed plate of the monitor main body via the pantograph mechanism, so that the height of the monitor main body can be reduced, whereby the monitor main body can be reduced. Since the space from the top to the ceiling can be increased, the monitor body can be easily installed and maintenance work can be easily performed.
【図1】本発明の第1実施例に係る体表面汚染モニタ装
置の概略構成を示す図。FIG. 1 is a diagram showing a schematic configuration of a body surface contamination monitoring device according to a first embodiment of the present invention.
【図2】本発明の第2実施例に係る体表面汚染モニタ装
置の一部を示す図。FIG. 2 is a diagram showing a part of a body surface contamination monitoring device according to a second embodiment of the present invention.
【図3】本発明の第3実施例に係る体表面汚染モニタ装
置の一部を示す図。FIG. 3 is a diagram showing a part of a body surface contamination monitoring device according to a third embodiment of the present invention.
【図4】本発明の第4実施例に係る体表面汚染モニタ装
置の一部を示す図。FIG. 4 is a diagram showing a part of a body surface contamination monitoring device according to a fourth embodiment of the present invention.
【図5】従来の体表面汚染モニタ装置の概略構成を示す
図。FIG. 5 is a diagram showing a schematic configuration of a conventional body surface contamination monitoring device.
1…モニタ本体,2…測定室,3〜12…放射線検出
器,18…アーム,19…駆動機構。DESCRIPTION OF SYMBOLS 1 ... Monitor main body, 2 ... Measurement room, 3-12 ... Radiation detector, 18 ... Arm, 19 ... Drive mechanism.
Claims (1)
測定室を有するモニタ本体と、上記測定室の周囲に配設
された複数の放射線検出器と、これらの放射線検出器の
うち上記測定室の上部に配設された放射線検出器を支持
するアームと、このアームを上下方向に駆動する駆動機
構とを具備したことを特徴とする体表面汚染モニタ装
置。1. A monitor body having a measurement room for measuring radioactivity of each part of a person to be measured, a plurality of radiation detectors disposed around the measurement room, and the radiation detector A body surface contamination monitoring device comprising: an arm provided above a measurement chamber for supporting a radiation detector; and a driving mechanism for driving the arm in a vertical direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP40260890A JP2647267B2 (en) | 1990-12-17 | 1990-12-17 | Body surface contamination monitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP40260890A JP2647267B2 (en) | 1990-12-17 | 1990-12-17 | Body surface contamination monitor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04216488A JPH04216488A (en) | 1992-08-06 |
JP2647267B2 true JP2647267B2 (en) | 1997-08-27 |
Family
ID=18512408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP40260890A Expired - Lifetime JP2647267B2 (en) | 1990-12-17 | 1990-12-17 | Body surface contamination monitor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2647267B2 (en) |
-
1990
- 1990-12-17 JP JP40260890A patent/JP2647267B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH04216488A (en) | 1992-08-06 |
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