JP2592404Y2 - Standard source holding cover - Google Patents
Standard source holding coverInfo
- Publication number
- JP2592404Y2 JP2592404Y2 JP1992035245U JP3524592U JP2592404Y2 JP 2592404 Y2 JP2592404 Y2 JP 2592404Y2 JP 1992035245 U JP1992035245 U JP 1992035245U JP 3524592 U JP3524592 U JP 3524592U JP 2592404 Y2 JP2592404 Y2 JP 2592404Y2
- Authority
- JP
- Japan
- Prior art keywords
- standard
- cover
- measuring instrument
- present
- source
- 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
Description
【０００１】[0001]
【産業上の利用分野】本考案は、標準線源を使用して放
射線測定器の精度チェックを行う際に、線源の取り扱い
を安全に、精度チェックを確実に行い得るようにした標
準線源保持カバ−に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a standard radiation source that can be used to check the accuracy of a radiation measuring instrument using a standard radiation source safely and accurately. It relates to a holding cover.
【０００２】[0002]
【従来の技術】原子力発電所、放射線医療施設等の放射
性物質を取り扱う施設では、作業者が規定線量以上の放
射線に被ばくしないよう、作業環境を放射線測定器によ
り測定している。また、この測定器が正しく作動してい
るか否かを確認するため、一定期間ごとに、一定の放射
能を有する標準線源に当てて、その精度をチェックし、
校正している。2. Description of the Related Art In a facility handling radioactive materials such as a nuclear power plant and a radiation medical facility, the working environment is measured by a radiation measuring instrument so that workers are not exposed to radiation exceeding a prescribed dose. In addition, in order to confirm whether this measuring instrument is operating correctly, it is applied to a standard source having a certain radioactivity at regular intervals, and its accuracy is checked.
Calibrating.
【０００３】標準線源は、プラスチック等で密閉され、
人体に影響のない程度の微弱な放射能しか持たないよう
に作られており、その取り扱いに危険はないが、十分に
慎重であることが望ましい。しかして、標準線源は通常
定められた容器に保管されていて、使用の際には放射能
測定器の測定面に当てて、メ−タに表示される線量が本
来標準線源が発すると計算された線量に合致しているか
否かで、放射線測定器の精度をチェックしている。The standard radiation source is sealed with plastic or the like,
It is made so that it has only weak radioactivity that does not affect the human body, and there is no danger in handling it, but it is desirable that it be sufficiently careful. However, the standard source is usually stored in a designated container, and when used, it is applied to the measuring surface of the radioactivity measuring instrument, and the dose displayed on the meter is considered to be the source of the standard source. The accuracy of the radiometer is checked by checking whether the calculated dose is consistent.
【０００４】[0004]
【考案が解決しようとする課題】標準線源を取り扱うに
あたって、つい直接手に持ってしまうことがある。この
ような行為は危険が少ないとはいえあまり望ましいこと
ではない。また、標準線源を測定面に当てるにしても、
その位置あわせには個人差が生じるが、標準線源の放射
能が微弱であるため、当てる位置によりメ−タに表示さ
れる線量に微妙な誤差が生じるおそれがある。[Problem to be solved by the present invention] When handling a standard source, it is sometimes directly held. Such actions, while less risky, are less desirable. Also, even if a standard source is applied to the measurement surface,
Although there is an individual difference in the alignment, a slight error may occur in the dose displayed on the meter depending on the applied position because the radioactivity of the standard source is weak.
【０００５】本考案は、上記従来技術の問題点に鑑みな
されたものであり、標準線源に直接手を触れることなく
取り扱うことができ、測定面に標準線源を当てる際に、
誰が行なっても常に一定の位置に標準線源がくるように
し、精度チェックに個人差が生じるのを防止することを
目的とする。The present invention has been made in view of the above-mentioned problems of the prior art, and can be handled without directly touching the standard radiation source.
It is an object of the present invention to ensure that a standard radiation source is always located at a fixed position regardless of who performs it, and to prevent individual differences in accuracy check.
【０００６】[0006]
【課題を解決するための手段】放射線測定器１又は２１
の円形をした測定面２又は２２に嵌合する測定器の測定
面２又は２２の直径と等しい円形凹部４又は２４を有
し、中心部には標準線源５又は２５を嵌め込むための前
記円形凹部４又は２４と同心の窪み６又は２６を有する
軟質材で構成した。Means for Solving the Problems Radiation measuring instrument 1 or 21
Has a circular recess 4 or 24 having a diameter equal to the diameter of the measuring surface 2 or 22 of the measuring instrument fitted to the circular measuring surface 2 or 22; It was made of a soft material having a recess 6 or 26 concentric with the circular recess 4 or 24.
【０００７】[0007]
【実施例】次に、本考案の実施例を図面に基いて説明す
る。放射線測定器は、その用途、測定対象、核種に応じ
て種々の形状のものがあるが、その代表的な例について
説明する。Next, an embodiment of the present invention will be described with reference to the drawings. There are various types of radiation measuring instruments depending on the application, the object to be measured, and the nuclide. Representative examples will be described.
【０００８】図１と図２は本考案を電離箱式サ−ベイメ
−タに適用した例を示すもので、図１(ａ)は測定器の斜
視図、図１(ｂ)は本考案カバ−の斜視図、図２(ａ)は本
考案カバ−に標準線源をセットした状態の斜視図、図２
(ｂ)は標準線源をセットした本考案カバ−を測定器に当
てた時の斜視図である。しかして、電離箱式サ−ベイメ
−タ１の測定面２は円形をしているので、本考案に係る
標準線源保持カバ−３も測定面２の直径よりやや大きい
径の円盤型のポリウレタンを用い、その内側面に測定器
１の測定面２の直径に等しい円形の凹部４が形成されて
おり、更に凹部４の中央には標準線源５を嵌め込むため
の円形の凹部４と同心の窪み６が設けられている。通常
は標準線源５をカバ−３の窪み６に嵌め込んだ状態で容
器に保管しておく。測定器の精度チェックの際にはカバ
−３を持って標準線源５を容器から取り出し、図２(ｂ)
の如くカバ−３を測定面２に嵌め込めば標準線源５は測
定面２の中央に押し付けられ、線量は測定器１のメ−タ
７に表示される。1 and 2 show an example in which the present invention is applied to an ionization chamber type survey meter. FIG. 1 (a) is a perspective view of a measuring instrument, and FIG. 1 (b) is a cover of the present invention. FIG. 2 (a) is a perspective view showing a state where the standard radiation source is set on the cover of the present invention, and FIG.
(b) is a perspective view when the cover of the present invention in which the standard radiation source is set is applied to the measuring instrument. Since the measuring surface 2 of the ionization chamber type survey meter 1 has a circular shape, the standard source holding cover 3 according to the present invention is also a disc-shaped polyurethane having a diameter slightly larger than the diameter of the measuring surface 2. A circular concave portion 4 having a diameter equal to the diameter of the measuring surface 2 of the measuring instrument 1 is formed on the inner surface thereof, and furthermore, the central portion of the concave portion 4 is concentric with the circular concave portion 4 for fitting the standard radiation source 5. Are provided. Normally, the standard radiation source 5 is stored in a container in a state of being fitted into the recess 6 of the cover-3. At the time of checking the accuracy of the measuring instrument, the standard source 5 was taken out of the container by holding the cover-3, and FIG.
When the cover 3 is fitted on the measuring surface 2 as shown in FIG.
【０００９】さらに、図３及び図４は本考案をＧＭ汚染
サ−ベイメ−タに適用した例を示すもので、図３(ａ)は
測定器の斜視図、図３(ｂ)は本考案カバ−の斜視図、図
４(ａ)は本考案カバ−に標準線源をセットした状態の斜
視図、図４(ｂ)は標準線源をセットした本考案カバ−を
測定器に当てた時の斜視図である。しかして、ＧＭ汚染
サ−ベイメ−タ２１の測定面２２は円形をしているの
で、本考案のカバ−２３も測定面２２の直径よりやや大
きい径の円盤型のゴムを用い、その一側面には内側に測
定面２２の直径に等しい円形の凹部２４が形成されてお
り、更に凹部２４の中心には標準線源２５を嵌め込むた
めの窪み２６が設けられている。また、カバ−の材質が
ゴムで、その弾力性が不足して標準線源２５の測定面２
２への押し付けに難がある場合は、円形の凹部２４及び
窪み２６により軟質のウレタンを敷いても良い。なお標
準線源２５、カバ−２３の保管、取り扱い、測定器の精
度チェックは先に述べた図１，図２の場合と同じであ
る。3 and 4 show an example in which the present invention is applied to a GM contamination survey meter. FIG. 3 (a) is a perspective view of a measuring instrument, and FIG. 3 (b) is the present invention. FIG. 4 (a) is a perspective view of the cover of the present invention with a standard source set, and FIG. 4 (b) is the cover of the present invention with the standard source set on the measuring instrument. It is a perspective view at the time. Since the measurement surface 22 of the GM contamination survey meter 21 has a circular shape, the cover 23 of the present invention also uses a disc-shaped rubber having a diameter slightly larger than the diameter of the measurement surface 22, and one side thereof. Is formed with a circular concave portion 24 having a diameter equal to the diameter of the measuring surface 22. Further, a concave portion 26 for fitting a standard radiation source 25 is provided at the center of the concave portion 24. Further, the cover is made of rubber, and its elasticity is insufficient.
In the case where it is difficult to press the urethane resin on the second urethane, soft urethane may be laid by the circular concave portion 24 and the concave portion 26. The storage and handling of the standard radiation source 25 and the cover 23 and the accuracy check of the measuring instrument are the same as those in FIGS. 1 and 2 described above.
【００１０】本考案のカバ−は、上述の放射能測定器に
限らず、広面積表面汚染サ−ベイメ−タ、β線サ−ベイ
メ−タ、α線サ−ベイメ−タ、ＮaＩ(ＴＩ）シンチレ−
ションサ−ベイメ−タ、パトロ−ルサ−ベイメ−タ等、
その他の放射線測定器にもその測定面の形状に合わせて
カバ−を作れば、いずれにも適用できるものである。The cover according to the present invention is not limited to the above-mentioned radioactivity measuring instrument, but also includes a wide-area surface contamination survey meter, a β-ray survey meter, an α-ray survey meter, and NaI (TI). Scintillation
Such as a shock absorber bay meter, a patrol roller bay meter, etc.
Other radiation measuring instruments can be applied to any of them if a cover is made according to the shape of the measuring surface.
【００１１】[0011]
【考案の効果】標準線源５又は２５をカバ−の窪み６又
は２６に嵌め、そのままカバ−を測定面２又は２２に嵌
合させるようにしたので、標準線源に直接手を触れるこ
となく安全、容易に取り扱い、保管することができる。
さらに放射線測定器の精度チェックに、個人差の生じる
余地無く、誰でも正確なデ−タをとることができる。The standard source 5 or 25 is fitted into the cover recess 6 or 26, and the cover is fitted to the measuring surface 2 or 22 without touching the standard source directly. Safe, easy to handle and store.
Further, anyone can obtain accurate data for checking the accuracy of the radiation measuring instrument without any individual difference.
【図１】本考案を電離箱式サ−ベイメ−タに適用した例
を示し、(ａ)は測定器の斜視図、(ｂ)は本考案カバ−の
斜視図。FIG. 1 shows an example in which the present invention is applied to an ionization chamber type survey meter. FIG. 1 (a) is a perspective view of a measuring instrument, and FIG. 1 (b) is a perspective view of a cover of the present invention.
【図２】(ａ)は本考案カバ−に標準線源をセットした状
態の斜視図、(ｂ)は標準線源をセットした本考案カバ−
を測定器に当てた時の斜視図である。2 (a) is a perspective view showing a state in which a standard source is set on the cover of the present invention, and FIG. 2 (b) is a cover showing the present invention in which a standard source is set.
FIG. 3 is a perspective view when the device is applied to a measuring instrument.
【図３】本考案をＧＭ汚染サ−ベイメ−タに適用した例
を示し、(ａ)は測定器の斜視図、(ｂ)は本考案カバ−の
斜視図FIG. 3 shows an example in which the present invention is applied to a GM contamination survey meter, wherein (a) is a perspective view of a measuring instrument, and (b) is a perspective view of a cover of the present invention.
【図４】(ａ)は本考案カバ−に標準線源をセットした状
態の斜視図、(ｂ)は標準線源をセットした本考案カバ−
を測定器に当てた時の斜視図である。4 (a) is a perspective view showing a state where the standard radiation source is set on the cover of the present invention, and FIG. 4 (b) is a cover showing the present invention where the standard radiation source is set.
FIG. 3 is a perspective view when the device is applied to a measuring instrument.
１,２１ 放射線測定器 ２,２２ 放射線測定器の測定面 ３,２３ 本考案カバ− ４,２４ 本考案カバ−の一側面に設けられた凹部 ５,２５ 標準線源 ６,２６ 標準線源を嵌め込むため凹部に設けられた窪
み ７,２７ 放射線測定器の線量表示メ−タ1,21 Radiation measuring device 2,22 Measurement surface of radiation measuring device 3,23 Cover of the present invention 4,24 Recess provided on one side of the cover of the present invention 5,25 Standard radiation source 6,26 Standard radiation source Depression provided in recess for fitting 7,27 Dose display meter of radiation measuring instrument
───────────────────────────────────────────────────── フロントページの続き (72)考案者 成井 秀教 北海道古宇郡泊村大字堀株村ヘロカルウ ス789 株式会社原子力代行 泊事業所 内 (72)考案者 橋野 一弘 北海道古宇郡泊村大字堀株村ヘロカルウ ス789 株式会社原子力代行 泊事業所 内 (56)参考文献 実開 昭50−24187（ＪＰ，Ｕ) 実開 昭60−83988（ＪＰ，Ｕ) 実公 昭34−18900（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.6，ＤＢ名) G01T 1/00 - 7/12 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidenori Narui Hokkaido Toumura Oaza Horishomura Hero Karousu 789 Atomic Energy Agency Tomari Office Co., Ltd. Mura Hero Karousu 789 Atomic Power Agency Tomari Office Co., Ltd. (56) References: Japanese Utility Model Showa 50-24187 (JP, U) Japanese Utility Model Showa 60-83988 (JP, U) Japanese Utility Model Showa 34-18900 (JP, Y1) (58) Field surveyed (Int. Cl. 6 , DB name) G01T 1/00-7/12
Claims (1)
定面(２又は22)に嵌合する測定器の測定面(２又は22)の
直径と等しい円形凹部(４又は24)を有し、中心部には標
準線源(５又は25)を嵌め込むための前記円形凹部(４又
は24)と同心の窪み(６又は26)を有する軟質材で構成し
た放射線測定器の点検時に使用するための標準線源保持
カバ−。1. A circular recess (4 or 24) having a diameter equal to the diameter of the measuring surface (2 or 22) of the measuring instrument fitted to the circular measuring surface (2 or 22) of the radiation measuring instrument (1 or 21). At the time of inspection of a radiation measuring instrument composed of a soft material having a concentric depression (6 or 26) with the circular recess (4 or 24) for fitting a standard radiation source (5 or 25) in the center. Standard source holding cover for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992035245U JP2592404Y2 (en) | 1992-04-28 | 1992-04-28 | Standard source holding cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992035245U JP2592404Y2 (en) | 1992-04-28 | 1992-04-28 | Standard source holding cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0587585U JPH0587585U (en) | 1993-11-26 |
| JP2592404Y2 true JP2592404Y2 (en) | 1999-03-24 |
Family
ID=12436457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992035245U Expired - Lifetime JP2592404Y2 (en) | 1992-04-28 | 1992-04-28 | Standard source holding cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592404Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6897975B2 (en) * | 2018-07-19 | 2021-07-07 | 株式会社千代田テクノル | Survey meter calibration jig |
-
1992
- 1992-04-28 JP JP1992035245U patent/JP2592404Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0587585U (en) | 1993-11-26 |
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