JPS61223685A - Analyzer for radiation exposed work - Google Patents

Analyzer for radiation exposed work

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Publication number
JPS61223685A
JPS61223685A JP60065226A JP6522685A JPS61223685A JP S61223685 A JPS61223685 A JP S61223685A JP 60065226 A JP60065226 A JP 60065226A JP 6522685 A JP6522685 A JP 6522685A JP S61223685 A JPS61223685 A JP S61223685A
Authority
JP
Japan
Prior art keywords
radiation
worker
exposure
work
receiver
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.)
Pending
Application number
JP60065226A
Other languages
Japanese (ja)
Inventor
Kiyohiko Oshima
大島 清彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP60065226A priority Critical patent/JPS61223685A/en
Publication of JPS61223685A publication Critical patent/JPS61223685A/en
Pending legal-status Critical Current

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  • Measurement Of Radiation (AREA)

Abstract

PURPOSE:To facilitate the analysis for radiation exposure by providing an arithmetic processor, which analyzes the work exposed to radiation of a worker on the basis of signals from an area signal generator, a radiation detector, and a receiver, and a device which displays and records results. CONSTITUTION:A display recorder 9 displays and records operation results from an arithmetic processor 8 in individual items as follows; (a) the working time and the working time total value in each working place of each worker, (b) the exposure dose and the exposure dose total value in each working place of each worker, (c) the exposure dose total value of individual workers in each working place, and (d) the working time total value and the exposure dose total value of all workers. In this case, each worker is allowed to carry a transmitter, and the signal from the transmitter 1 is received by a receiver 3, and an analysis is performed on the basis of this received signal and signals from a radiation detector 4 and an area signal generator 5; and therefore, information for reducing exposure to radiation is obtained easily without requiring skillful analyzing persons.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は原子力発電所など放射線被曝作業の発生する事
業所において、作業者の放射線被曝低減のために有効な
情報を自動的に得るために供される放射線被曝作業分析
装置に関する。
[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is provided for automatically obtaining information effective for reducing radiation exposure of workers in workplaces where radiation exposure work occurs, such as nuclear power plants. The present invention relates to a radiation exposure work analysis device.

〔発明の技術的背景〕[Technical background of the invention]

原子力発電所など放射線環境下での作業を伴う事業所で
は、作業者の被曝線量低減のために種々の被曝低減対策
が実施されている。例えば、取扱う機器類の遠隔自動化
、故11ta源となる配管・機器類の遮蔽など、放射線
防護の3原則(■被曝時間を短くする。■放射wAwA
から距離をとる。■放射線源を遮蔽する。)が駆使され
ている。このような被曝低減対策の検討に際しては作業
者毎の放射線被曝作業の実線把握が不可欠であり、有効
でかつ経済的な被曝低減対策を実施するためには低減し
ようとする放射線被曝作業について、いつ。
At workplaces that involve work in radiation environments, such as nuclear power plants, various radiation exposure reduction measures are being implemented to reduce the radiation exposure of workers. For example, the three principles of radiation protection (■ Shorten the exposure time. ■ Radiation wAwA
keep your distance from ■Shielding the radiation source. ) are fully utilized. When considering such radiation exposure reduction measures, it is essential to understand the radiation exposure work of each worker, and in order to implement effective and economical radiation exposure reduction measures, it is essential to understand when .

どこで、誰が、どのようして、被曝するかを分析する必
要がある。
It is necessary to analyze where, who, and how they are exposed.

〔背景技術の問題点〕[Problems with background technology]

一方、作業者の被曝線量は被曝管理用のコンピュータに
よって日単位及び月単位の被III線量記録として集中
管理されているが、上j!シた放射線被曙作業を分析す
る上で印判用可能なシステムとはなっていない。このた
め、定期検査等のように施設内で被曝低減対策を実施す
べき作業が集中し、かつ重複した場合には次のような問
題があった。
On the other hand, the radiation exposure doses of workers are centrally managed by computers for radiation management as daily and monthly radiation dose records. There is no system that can be used to analyze radiation exposure work. For this reason, when work to implement radiation exposure reduction measures within a facility, such as periodic inspections, is concentrated and duplicated, the following problems arise.

(1)作業分析に必要な特定作業者の抽出(誰が)。(1) Extraction of specific workers required for work analysis (who).

作業時のどの時点で(いつ)、施設内のどの場所で(ど
こで)、何の作業で・(どのようにして)被曝するかの
因子分析のために、特定作業内容を熟知した分析具が作
業者と同一行動をとりながら作業ステップ毎に記録をと
る必要があり、分析具の人件費及び被曝線量増加が無視
し得ない。
Analytical tools that are familiar with the specific work content are used to analyze the factors at which point in the work (when), in what place in the facility (where), in what work, and (how) the person is exposed to radiation. It is necessary to record each work step while taking the same actions as the worker, and the labor costs for analysis tools and the increase in exposure dose cannot be ignored.

(2被曝線量の集計記録は通常被曝管理用のコンピュー
タによって集中管理されているため、個人毎の日単位及
び月単位の被曝線量集計には有効であるが、上述の作業
分析を行なうためにはコンピュータへのデータ入力方法
の細分化など現状のシステムを大幅に変更する必要があ
る。
(2 Exposure dose total records are usually centrally managed by a computer for exposure management, so it is effective for daily and monthly exposure dose totals for each individual, but in order to perform the above-mentioned work analysis It is necessary to make major changes to the current system, such as subdividing the method of inputting data into computers.

(3)作業時間当りの被曝線量率(mrem/hr)が
作業分析上必要な数値となるが、現状では(1)で述べ
たように分析具による作業時間記録とコンピュータによ
る個人被曝線量集計とを熟達した放射線管理員が経験に
よりとりまとめるため、熟達した放射線管理員の確保が
必要となり、結果を得るために多大の労力を要する。
(3) The exposure dose rate per working hour (mrem/hr) is a necessary value for work analysis, but currently, as mentioned in (1), working hours are recorded using analysis tools and individual exposure doses are aggregated using a computer. Since radiation control staff who are proficient in these matters compile the information based on their experience, it is necessary to secure a skilled radiation control staff, and it takes a great deal of effort to obtain the results.

(発明の目的) 本発明はかかる事情に鑑みなれたもので、その目的とす
るところは、作業者の放射線被曝低減のために有効な情
報を得ることができる放射線被曝作業分析装置を提供す
ることにある。
(Objective of the Invention) The present invention was made in view of the above circumstances, and its purpose is to provide a radiation exposure work analysis device that can obtain effective information for reducing radiation exposure of workers. It is in.

〔発明の概要〕[Summary of the invention]

本発明は上記の目的を達成するために、次のような構成
としたことを特徴とするものである。すなわち本発明に
よる放射線被曝作業分析装置は、放射線管理区域内の作
業者個々に携帯され作業者毎に特定周波数の信号を発生
する発信器と、上記管理区域内の複数箇所に設置され前
記発信器からの信号を受信する受信器と、この受信器が
設置された場所の放射線量を検出する放射線検出器と、
上記受信器の設置場所を示す信号を発生するエリア信号
発生器と、これらエリア信号発生器、放射線検出器およ
び受信器からの信号にもとづいて作業者の放射線被曝作
業を分析する演算処理装置と、この演算処理装置で得ら
れた結果を表示記録する表示記録装置とを具備してなる
ものである。。
In order to achieve the above object, the present invention is characterized by having the following configuration. That is, the radiation exposure work analysis device according to the present invention includes a transmitter that is carried by each worker in a radiation controlled area and generates a signal of a specific frequency for each worker, and a transmitter that is installed at a plurality of locations in the controlled area. a radiation detector that detects the amount of radiation at a location where the receiver is installed;
an area signal generator that generates a signal indicating the installation location of the receiver, and an arithmetic processing device that analyzes radiation exposure work of workers based on signals from the area signal generator, radiation detector, and receiver; It is equipped with a display/recording device for displaying and recording the results obtained by this arithmetic processing device. .

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

第1図は本発明による放射線被曝作業分析装置の一実施
例を示すブロック因で、この放射線被曝作業分析装置は
放射線管理区域内の作業者個々に携帯される発信器1と
、上記管理区域内の複数箇所に設置された受信装置2と
、この受信装置2と信号117を介して接続された演算
処理装置8と、この演算処理装置8の演算結果を表示記
録する表示記録装置9から構成されている。
FIG. 1 is a block diagram showing an embodiment of a radiation exposure work analysis device according to the present invention. This radiation exposure work analysis device includes a transmitter 1 carried by each worker in a radiation controlled area, It is composed of a receiving device 2 installed at a plurality of locations, an arithmetic processing device 8 connected to the receiving device 2 via a signal 117, and a display/recording device 9 that displays and records the calculation results of the arithmetic processing device 8. ing.

上記発信器1は第2図に示すように電源部1a。The transmitter 1 has a power supply section 1a as shown in FIG.

オンオフスィッチ1b1発信部1Cから構成されており
、作業者毎に特定周波数の信号を発信するようになって
いる。また受信装置2は第3図に示すように、発信器1
の発信信号を受信する受信器3と、受信器WI2すなわ
ち受信器3が設置された場所の放射線量を検出する放射
線検出器4と、受信1i112の設置場所を示すエリア
信号〈例えば受信器@2の識別番号)を発生するエリア
信号器5と、これらエリア信号器5.放射線検出器4.
受信器3の各出力信号をデジタル信号に変換するA/D
変換器6から構成されている。
It is composed of an on-off switch 1b1 and a transmitting section 1C, and is configured to transmit a signal of a specific frequency for each worker. Further, the receiving device 2 is connected to the transmitter 1 as shown in FIG.
A receiver 3 that receives a transmission signal of area signal device 5 which generates the area signal device 5 (identification number); Radiation detector 4.
A/D that converts each output signal of the receiver 3 into a digital signal
It consists of a converter 6.

前記演算処理装置8は第1図に示すようにデータ変換部
8a、中央演算部8b、入力部8Cから構成され、デー
タ変換部8aは第4図に示すように受信器H2からの信
号を演算可能なデータ(例えば発信器1の固有周波数、
受信器[2の識別番号、放射線検出器4の放射線量検出
値)に変換するデータ変換器81と、このデータ変換器
81で変換されたデータを一定時間蓄積しておくメモリ
ーバッファ82を備えている。また中央演算部8bはデ
ータ変換部8aからのデータを作業分析に必要なデータ
(例えば作業者の個人認識番号0作業場所0作業場所の
放射線m)に変換する位置指足回路83と、この位置指
示回路83からのデータをもとに作業分析を行なう因子
分析回路84と、この因子分析回路84に作業時間を決
定するための時間要素を与えるタイマー85を備えてい
る。
The arithmetic processing unit 8 is composed of a data conversion section 8a, a central processing section 8b, and an input section 8C as shown in FIG. 1, and the data conversion section 8a calculates the signal from the receiver H2 as shown in FIG. Possible data (e.g. natural frequency of transmitter 1,
It is equipped with a data converter 81 that converts the data into the receiver [identification number of 2, radiation dose detection value of radiation detector 4], and a memory buffer 82 that stores the data converted by this data converter 81 for a certain period of time. There is. The central processing unit 8b also includes a position finger/toe circuit 83 that converts the data from the data conversion unit 8a into data necessary for work analysis (for example, worker's personal identification number 0 work place 0 work place radiation m), It is provided with a factor analysis circuit 84 that performs work analysis based on data from the instruction circuit 83, and a timer 85 that provides the factor analysis circuit 84 with a time element for determining work time.

すなわち、因子分析回路84はタイマー85からの信号
をもとに発信器1からの受信信号時間を演算して作業時
間を決定している。なお、因子分析回路84には図示し
ない被曝管理用コンピュータからその日における作業者
毎の個人被曝データが供給されるようになっている。
That is, the factor analysis circuit 84 determines the working time by calculating the reception signal time from the transmitter 1 based on the signal from the timer 85. Incidentally, the factor analysis circuit 84 is supplied with individual radiation exposure data for each worker on that day from an exposure management computer (not shown).

次にこのように構成された本装置の動作を第5図を参照
して説明する。
Next, the operation of the apparatus configured as described above will be explained with reference to FIG.

まず、作業実施前に下記の分析条件を図示しない入力装
置により演算処理装[8の入力部8Cに入力する。
First, before carrying out the work, the following analysis conditions are input to the input section 8C of the arithmetic processing unit [8] using an input device (not shown).

a、施設内の作業場所範囲 す0作業日時 C1作業者の個人認識番号 d1作業者が携帯する発信器1の固有周波数次に作業者
の1人1人に発信器1を貸与し、作業場所で作業開始時
に発信器1のオンオフスイッチ1bをオンにし、作業が
終了した時点でオンオフスイッチ1bをオフにする。こ
れにより発信器1からは作業者毎に異なる特定周波数の
信号が作業時間中のみ発信される。発信器1から発信さ
れた信号は施設内の複数箇所に設置された最寄りの受信
装置2(受信器3)で受信される。このとき、エリア信
号発生器5からはその受信装置2が施設内のどの場所に
設置されたものかを判別するためのエリア信号が発生さ
れ、ざらに放射線検出B4からはその設置場所における
放射線量の検出信号が発生される。これらのエリア信号
発生器5および放射線検出器4から出力された信号は受
信器3の受信信号とともに、A/D変換器6でデジタル
信号に変換されたのち信号線7を通じて演算処理装@8
に入力される。
a. Work place range within the facility 0 Work date and time C 1 Worker's personal identification number d 1 Natural frequency of transmitter 1 carried by the worker When the work starts, the on/off switch 1b of the transmitter 1 is turned on, and when the work is finished, the on/off switch 1b is turned off. As a result, the transmitter 1 transmits a signal with a specific frequency that differs for each worker only during the working time. The signal transmitted from the transmitter 1 is received by the nearest receiving device 2 (receiver 3) installed at multiple locations within the facility. At this time, the area signal generator 5 generates an area signal for determining where in the facility the receiving device 2 is installed, and the radiation detector B4 generates an area signal to determine the radiation level at the installation location. A detection signal is generated. The signals output from the area signal generator 5 and the radiation detector 4 are converted into digital signals by the A/D converter 6 together with the received signals from the receiver 3, and then sent to the arithmetic processing unit @ 8 via the signal line 7.
is input.

演算処理装置8では受信装置2からのデジタル信号をデ
ータ変換部8aに入力し、データ変換器81で入力信号
を下記の内容を持ったデータに変換する。
In the arithmetic processing unit 8, the digital signal from the receiving device 2 is input to the data converter 8a, and the data converter 81 converts the input signal into data having the following contents.

80発信器1の固有周波数 す、受信器M2の識別番号 C1放射線検出器4の放射線量検出値 なお、これらのデータは経時的に連続して作成され、受
信装置2毎(作業場所別)にメモリーバッファ82に蓄
積されて間欠的に中央演算部8bの位置指示回路83に
入力される。
80 Natural frequency of transmitter 1, identification number C1 of receiver M2, radiation dose detection value of radiation detector 4 These data are created continuously over time, and are updated for each receiving device 2 (by work location). The signal is stored in the memory buffer 82 and is intermittently input to the position indicating circuit 83 of the central processing unit 8b.

位置指示回路83ではデータ変換部8aからの入力デー
タをメモリーバッファ82に蓄積された分(作業場所別
)ごとに下記の項目に変換して因子解析回路84に供給
する。
The position instruction circuit 83 converts the input data from the data converter 8 a into the following items for each portion (by work location) accumulated in the memory buffer 82 and supplies the converted data to the factor analysis circuit 84 .

81発信器1の固有周波数→作業者の個人認識番号 す、受信装置2の識別番号→作業場所 C1放射線検出器4の放射線量検出値→作業場所の放射
線量率 そして、全作業者が作業を終了すると各作業者のその日
における被曝線量が図示しない被曝管理用コンピュータ
によって集計され、集計された個人被曝データが因子分
析回路84に供給される。
81 Natural frequency of transmitter 1 → worker's personal identification number, identification number of receiver 2 → work place C1 radiation dose detection value of radiation detector 4 → radiation dose rate of work place Upon completion, the radiation dose of each worker for that day is totaled by a radiation management computer (not shown), and the total individual exposure data is supplied to the factor analysis circuit 84.

因子分析回路84ではこれらのデータをもとに下記の演
算を実施し、得られた結果を表示記録装置9に送出する
The factor analysis circuit 84 performs the following calculations based on these data and sends the obtained results to the display/recording device 9.

ここで、d、、d2 、・・・、dl!:作業者毎の作
業場所別における被曝線量、t、、t2 、・・・、1
.:作業者毎の作業場所別における作業時間、rl。
Here, d,,d2,...,dl! : Exposure dose for each worker by work location, t,,t2,...,1
.. : Working time for each worker at each work location, rl.

r2.・・・、 rfi :作業場所別の放射線量率、
01 二作業者毎の被曝線1(日単位)である。
r2. ..., rfi: Radiation dose rate by work place,
01 Exposure line 1 (in days) for every two workers.

そして、表示記録装置9では演算処理装置8からの演算
結果を下記の項目別に表示記録する。
The display/recording device 9 displays and records the calculation results from the calculation processing device 8 according to the following items.

a00作業毎の作業場所別における作業時間及び作業時
間累計値 す0作業者毎の作業場所別における被曝線量及び被曝線
量累計値 C1作業場所毎の作業者別における作業時間及び作業時
間累計値 d6作業場所毎の作業者別における被曝線量及び被曝線
量累計値 e8作業者全員の作業時間累計値及び被曝線量累計値 このように本実施例においては作業者例々に発信器1を
携帯させ、この発信器1からの特定周波数信号を施設内
の複数箇所に設置された最寄りの受信器3で受信し、こ
の受信器3の受信信号と放射線検出器4及びエリア信号
発生器5からの信号にもとづいて作業者の放射線被曝作
業を分析するようにしたので、従来のように熟達した分
析質を必要とせず、作業者の放tJJIi!被曝低減の
ために有効な情報を得ることができる。
a00 Working hours and cumulative working hours for each work location; 0 Exposure dose and cumulative exposure dose for each worker, by working location C1 Working hours and cumulative working hours for each worker, for each work location d6 Work Exposure dose and cumulative exposure dose for each worker in each location e8 Cumulative working time and cumulative exposure dose for all workers In this way, in this embodiment, each worker is made to carry a transmitter 1, and the transmitter The specific frequency signal from the device 1 is received by the nearest receiver 3 installed at multiple locations within the facility, and based on the received signal of this receiver 3 and the signals from the radiation detector 4 and area signal generator 5. Since the radiation exposure work of workers is analyzed, there is no need for skilled analytical personnel as in the past. Information useful for reducing exposure can be obtained.

〔発明の効果〕〔Effect of the invention〕

以上の説明から明らかなように本発明によれば、放射線
管理区域内の作業者例々に携帯され作業者毎に特定周波
数の信号を発生する発信器と、上記管理区域内の複数箇
所に設置され前記発信器からの信号を受信する受信器と
、この受信器が設置された場所の放射線量を検出する放
射線検出器と、上記受信器の設置場所を示す信号を発生
するエリア信号発生器と、これらエリア信号光生器、放
射線検出器および受信器からの信号にもとづいて作業者
の放射線被曝作業を分析する演算処理装置と、この演算
処理装置で得られた結果を表示記録する表示記録装置と
を具備したので、作業者の放射線被曝低減対策に有用な
放射線被曝作業分析装置を提供できる。
As is clear from the above description, the present invention includes a transmitter that is carried by each worker in the radiation controlled area and generates a signal of a specific frequency for each worker, and a transmitter that is installed at multiple locations in the controlled area. a receiver that receives a signal from the transmitter, a radiation detector that detects the radiation dose at a location where the receiver is installed, and an area signal generator that generates a signal indicating the location where the receiver is installed. , an arithmetic processing device that analyzes radiation exposure work of workers based on signals from the area signal light generator, radiation detector, and receiver, and a display/recording device that displays and records the results obtained by this arithmetic processing device. Therefore, it is possible to provide a radiation exposure work analysis device useful for measures to reduce radiation exposure of workers.

【図面の簡単な説明】[Brief explanation of drawings]

第1図ないし第5図は本発明の一実施例を示す図で、第
1図は放射線被曝作業分析装置のブロック図、第2図は
発信器の構成図、第3図は受信装置の構成図、第4図は
演算処理装置の構成図、第5図は放射線被曝作業分析装
置の動作シーケンスを示す流れ図である。 1・・・発信器、2・・・受信装置、3・・・受信器、
4・・・放射線検出器、5・・・エリア信号発生器、8
・・・演算処理装置、9・・・表示記録装置。 出願人代理人 弁理士 鈴江武彦 第1因 第2図     s3図 第4図 、(8 IIs  図
Figures 1 to 5 are diagrams showing one embodiment of the present invention, in which Figure 1 is a block diagram of a radiation exposure work analysis device, Figure 2 is a configuration diagram of a transmitter, and Figure 3 is a configuration of a receiving device. 4 is a block diagram of the arithmetic processing device, and FIG. 5 is a flowchart showing the operation sequence of the radiation exposure work analysis device. 1... Transmitter, 2... Receiving device, 3... Receiver,
4... Radiation detector, 5... Area signal generator, 8
...Arithmetic processing unit, 9...Display and recording device. Applicant's agent Patent attorney Takehiko Suzue 1st cause Figure 2 Figure s3 Figure 4, (8 IIs Figure

Claims (1)

【特許請求の範囲】[Claims] 放射線管理区域内の作業者個々に携帯され作業者毎に特
定周波数の信号を発生する発信器と、上記管理区域内の
複数箇所に設置され前記発信器からの信号を受信する受
信器と、この受信器が設置された場所の放射線量を検出
する放射線検出器と、上記受信器の設置場所を示す信号
を発生するエリア信号発生器と、これらエリア信号発生
器、放射線検出器および受信器からの信号にもとづいて
作業者の放射線被曝作業を分析する演算処理装置と、こ
の演算処理装置で得られた結果を表示記録する表示記録
装置とを具備したことを特徴とする放射線被曝作業分析
装置。
A transmitter that is carried by each worker in the radiation controlled area and generates a signal of a specific frequency for each worker; a receiver that is installed at multiple locations in the controlled area and receives signals from the transmitter; a radiation detector that detects the radiation dose at the location where the receiver is installed; an area signal generator that generates a signal indicating the location where the receiver is installed; 1. A radiation exposure work analysis device comprising: an arithmetic processing device that analyzes a worker's radiation exposure work based on signals; and a display/recording device that displays and records the results obtained by the arithmetic processing device.
JP60065226A 1985-03-29 1985-03-29 Analyzer for radiation exposed work Pending JPS61223685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60065226A JPS61223685A (en) 1985-03-29 1985-03-29 Analyzer for radiation exposed work

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60065226A JPS61223685A (en) 1985-03-29 1985-03-29 Analyzer for radiation exposed work

Publications (1)

Publication Number Publication Date
JPS61223685A true JPS61223685A (en) 1986-10-04

Family

ID=13280788

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60065226A Pending JPS61223685A (en) 1985-03-29 1985-03-29 Analyzer for radiation exposed work

Country Status (1)

Country Link
JP (1) JPS61223685A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01257290A (en) * 1988-04-07 1989-10-13 Matsushita Electric Ind Co Ltd Work exposure monitor
JPH02113400A (en) * 1988-10-21 1990-04-25 Aloka Co Ltd Radiation quantity measuring instrument and storage device
JPH11248839A (en) * 1998-02-27 1999-09-17 Aloka Co Ltd System for measuring radiation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01257290A (en) * 1988-04-07 1989-10-13 Matsushita Electric Ind Co Ltd Work exposure monitor
JPH02113400A (en) * 1988-10-21 1990-04-25 Aloka Co Ltd Radiation quantity measuring instrument and storage device
JPH11248839A (en) * 1998-02-27 1999-09-17 Aloka Co Ltd System for measuring radiation

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