JPS6032143B2 - Method for detecting radioactive contamination of waste - Google Patents
Method for detecting radioactive contamination of wasteInfo
- Publication number
- JPS6032143B2 JPS6032143B2 JP15699679A JP15699679A JPS6032143B2 JP S6032143 B2 JPS6032143 B2 JP S6032143B2 JP 15699679 A JP15699679 A JP 15699679A JP 15699679 A JP15699679 A JP 15699679A JP S6032143 B2 JPS6032143 B2 JP S6032143B2
- Authority
- JP
- Japan
- Prior art keywords
- waste
- air
- contamination
- radioactive contamination
- detecting radioactive
- 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
Links
Landscapes
- Measurement Of Radiation (AREA)
Description
【発明の詳細な説明】
本発明は、放射性物質を取扱う施設から発生する廃棄物
が放射性物質によって汚染されているか否かを能率的か
つ確実に検知することができる方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method that can efficiently and reliably detect whether waste generated from a facility that handles radioactive materials is contaminated with radioactive materials.
放射性物質を取扱う施設の管理区域等では、汚染防止の
ためゴム手袋等が大量に使用されている。Rubber gloves are widely used in controlled areas of facilities that handle radioactive materials to prevent contamination.
このような物を廃棄処分する場合には、予めそれらの物
が放射性物質により汚染されていないことを検知するこ
とが必要である。従来は、手袋着用者本人が直接サーベ
イメータを持ちゴム手袋等の表面をサーベィし、汚染の
有無を測定していた。When disposing of such items, it is necessary to detect in advance that they are not contaminated with radioactive substances. Conventionally, the glove wearer himself or herself carried a survey meter and surveyed the surface of rubber gloves, etc., to measure the presence or absence of contamination.
しかしながら、このようなサーベイ作業には時間がかか
り、かつ指の間の部分等はサーベィし難く、汚染を発見
しにくいという欠点があった。換言すると、汚染の発見
、汚染拡散防止は手袋着用者の善意にまかせられていた
のが現状である。しかしながら、業務量の増大に伴い、
作業員数の不足、経験不足が問題となり、手袋着用者に
よる検査の他に、更に安全のため第三者によるチェック
が望まれていたのである。本発明は、このような従来技
術の実情に鑑みなされたものであって、その目的は、大
量の廃棄物であっても、それが放射性物質で汚染されて
いるか否かを、短時間のうちに能率的かつ確実に検知で
き、第三者による汚染の有無の検査も可能となるような
方法を提供することにある。かかる目的を達成するため
、本発明は廃棄物を直接サーベイするのではなく、紬断
し、空気と縄拝した後、その空気をサンプリングして放
射能を測定するように構成されている。However, such survey work is time-consuming, and it is difficult to survey the area between the fingers, making it difficult to detect contamination. In other words, the current situation is that detecting contamination and preventing the spread of contamination is left to the goodwill of glove wearers. However, as the amount of work increases,
Insufficient numbers of workers and lack of experience were problems, and in addition to inspections by people wearing gloves, it was desired that inspections be conducted by a third party for added safety. The present invention was made in view of the actual state of the prior art, and its purpose is to quickly determine whether or not waste is contaminated with radioactive materials, even if it is a large amount of waste. The object of the present invention is to provide a method that can efficiently and reliably detect contamination, and also allows a third party to inspect the presence or absence of contamination. To achieve this objective, the present invention is configured not to directly survey waste, but to cut it into pieces, mix it with air, and then sample the air to measure radioactivity.
以下、本発明について更に詳しく説明する。The present invention will be explained in more detail below.
図面は本発明方法を実施するための装置の一例を示す説
明図である。検査される廃棄物を供給装置１に投入する
。供給された廃棄物は細断装置２によって細かく寸断さ
れ、プロワ−（図示せず）によってサイクロン４に送ら
れる。ここで空気と廃棄物（固体）とが分離され、廃棄
物の細断片は受け容器５に収容される。空気はＨＥＰＡ
フィル夕６で炉遇されてから排気される。細片状の廃棄
物表面に付着していた物質（放射性物質も含む）は、ブ
ロワーからの空気流にのって移送される過程で空気と混
合、蝿拝し、空気によって洗浄されるため、空気中に移
ることになる。The drawing is an explanatory view showing an example of an apparatus for carrying out the method of the present invention. The waste to be inspected is introduced into the feeding device 1. The supplied waste is shredded into small pieces by a shredding device 2 and sent to a cyclone 4 by a blower (not shown). Air and waste (solids) are separated here, and the waste fragments are placed in a receiving container 5. Air is HEPA
It is treated with a filter 6 and then exhausted. Substances (including radioactive substances) attached to the surface of small pieces of waste mix with the air as they are transported by the air flow from the blower, and are washed away by the air. It will be transferred into the air.
勿論サイクロン４での固・気分離過程でも同様のことが
起る。それ故、フィル夕６に入る前の空気をサンプリン
グ装置３でサンプリングし、測定することにより、放射
性物質による汚染の有無を検査できる。また、廃棄物細
断片と空気との混合、健拝をより一層促進するため、縄
断装置２とサイクロン４との間の管路内に、螺旋状の案
内部材等の混合・縄梓手段を付設してもよい。本発明は
、廃棄物細断片を空気と燈拝して、付着している物質を
空気中に移し、その空気をサンプリングして放射能測定
を行うことにより、廃棄物が放射性物質により汚染され
ていたか否かを検知する方法であるから、第三者による
チェックが可能であり、使用済手袋等で裏返いこなって
いるもの、塊状になったものなど、従来の方法では測定
困難なところに付着していても何ら差障りなく、大量の
廃棄物を短時間に能率的に、かつ容易に検査でき、安全
面からみても極めて顕著な効果を有するものである。Of course, the same thing occurs in the solid/gas separation process in cyclone 4. Therefore, by sampling and measuring the air before it enters the filter 6 with the sampling device 3, it is possible to check whether there is contamination by radioactive substances. In addition, in order to further promote the mixing of the waste fragments with air and the cleanliness, a spiral guide member or other mixing/stripping means is installed in the pipe between the rope cutting device 2 and the cyclone 4. It may be attached. The present invention detects whether waste is contaminated with radioactive materials by exposing small pieces of waste to air, transferring attached substances into the air, and sampling the air to measure radioactivity. This method allows for a third party to check whether the product has adhered to areas that are difficult to measure using conventional methods, such as used gloves that have been turned inside out or have formed into clumps. It is possible to inspect a large amount of waste efficiently and easily in a short period of time without causing any problems, and it has an extremely significant effect from a safety standpoint.
図面は本発明方法を実施するに好適な装置の一例を示す
説明図である。
１・・・廃棄物供給装置、２・・・細断装置、３・・・
サンプリング装置、４・・・サイクロン、５・・・受け
容器、６…フイルタ。The drawing is an explanatory view showing an example of an apparatus suitable for carrying out the method of the present invention. 1...Waste supply device, 2...Shredding device, 3...
Sampling device, 4... cyclone, 5... receiving container, 6... filter.
Claims (1)
し、その細断片を空気と撹拌して細断片に付着している
物質を空気中に移し、その空気をサンプリングして放射
能測定を行うことにより、廃棄物の放射性物質による汚
染の有無を検知する方法。1. Waste generated from facilities that handle radioactive materials is shredded, the fragments are mixed with air, the substances attached to the fragments are transferred to the air, and the air is sampled to measure radioactivity. A method of detecting the presence or absence of contamination of waste with radioactive materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15699679A JPS6032143B2 (en) | 1979-12-04 | 1979-12-04 | Method for detecting radioactive contamination of waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15699679A JPS6032143B2 (en) | 1979-12-04 | 1979-12-04 | Method for detecting radioactive contamination of waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5679979A JPS5679979A (en) | 1981-06-30 |
| JPS6032143B2 true JPS6032143B2 (en) | 1985-07-26 |
Family
ID=15639895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15699679A Expired JPS6032143B2 (en) | 1979-12-04 | 1979-12-04 | Method for detecting radioactive contamination of waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6032143B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4365245B2 (en) * | 2004-03-16 | 2009-11-18 | 日本原子力発電株式会社 | Dust monitor |
-
1979
- 1979-12-04 JP JP15699679A patent/JPS6032143B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5679979A (en) | 1981-06-30 |
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