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Occupational exposure to natural radiation in zirconium refractory plants in Japan
https://repo.qst.go.jp/records/46512
https://repo.qst.go.jp/records/4651212dec748-a15e-493e-bd52-22bc41221908
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-03-28 | |||||
| タイトル | ||||||
| タイトル | Occupational exposure to natural radiation in zirconium refractory plants 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_6501 | |||||
| 資源タイプ | journal article | |||||
| 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× Tabe, Hiroyuki× Suzuki, Tosikazu× Yonehara, Hidenori× 岩岡 和輝× 田部 裕章× 鈴木 敏和× 米原 英典 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The authors measured the ambient dose rate and activity concentration of natural radionuclides in raw materials, products, and aerosols in work sites, as well as the 222Rn and 220Rn concentrations in an unshaped refractory, a shaped refractory, and an electrocast refractory plant processing zirconium ore in Japan. Estimations were made of the effective doses to plant workers. The activity concentration of the 238U series in raw materials and products in the refractory plants was higher than the critical values (10 Bq g-1 for 40K and 1 Bq g-1 for all other radionuclides of natural origin) specified in the International Atomic Energy Agency Safety Guide. The ambient dose rate in the raw material warehouse of the electrocast refractory plant was 0.75uSv h-1, which was the highest among all the work sites at all the refractory plants studied. The activity concentrations of aerosols in the product-output site of the unshaped refractory plant was 0.0015 for 238U and 0.00078 Bq m–3 for 232Th, which were the highest of all the work sites for all refractory plants. The indoor 222Rn and 220Rn concentrations in all work sites of all the refractory plants were almost the same levels as those in everyday indoor places in Japan. The maximum value of the effective dose to workers was 430 uSv y-1, which was lower than the intervention exemption level (1000 uSv y-1) specified in ICRP Publication 82. |
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| 書誌情報 |
Health Physics 巻 104, 号 2, p. 151-157, 発行日 2013-02 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0017-9078 | |||||
