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Database of activity concentration in NORMs used as industrial raw materials in Japan
https://repo.qst.go.jp/records/54400
https://repo.qst.go.jp/records/54400579c3fba-4e3f-4307-bfd8-9c7934c3e336
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-11-15 | |||||
| タイトル | ||||||
| タイトル | Database of activity concentration in NORMs used as industrial raw materials in Japan | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | conference paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Iwaoka, Kazuki
× Iwaoka, Kazuki× Yonehara, Hidenori× 岩岡 和輝× 米原 英典 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Natural radioactive nuclides, such as Uranium-238 (238U), Thorium-232 (232Th), and Radium-226 (226Ra), are widely distributed in the environment. Zirconium (Zr) ore, titanium (Ti) ore, and phosphate (P) ores which are generally used as industrial raw materials, contain radioactive nuclides in a relatively high concentration. The International Commission on Radiological Protection (ICRP) 1990 Recommendations recommended that an occupational exposure to some of NORMs should be controlled. However, the current extent of the industrial use of NORMs is not clearly perceived, because the activity concentrations in NORMs have a wide distribution from low to high level, and NORMs are used for a variety of purposes. Because Japan has poor natural resources, most ores used as industrial raw materials are imported significantly. There can be a case that workers handling imported raw materials would be exposed to high levels of radiation without being aware of it. The activity concentrations in the materilas should be investigated to evaluate the radiation exposure of workers. In this study, we collected imported industrial raw materials, and measured the activity concentrations in these resources by using ICP-MS (inductively-coupled plasma mass spectrometry) and gamma ray spectrometry. Furthermore, we developed a database of activity concentrations of NORMs by referring to the measured results as well as referring to literatures, and published a database on the web. The purpose of the database is to relieve anxieties among the general public and to provide extensive data regarding NORM for researchers and regulators. The database is providing more than 1000 pieces of activity concentrations in NORMs at no fee. (NORM database; http://www.nirs.go.jp/db/anzendb/NORMDB/ENG/index.php). |
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| 書誌情報 |
Naturally Occurring Radioactive Material (NORM) (IAEA Proceedings Series) 巻 6, p. 000, 発行日 2010-03 |
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