Individual monitoring for internal contamination with plutonium compounds at JAEA-NCL
| Autor: | Katsuta Kanai, Osamu Kurihara |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Nuclear fuel cycle
chemistry.chemical_element Radiation Dosage Feces Radiation Monitoring Occupational Exposure Humans Tissue Distribution Radiology Nuclear Medicine and imaging Tissue distribution Lung Radiation Radiological and Ultrasound Technology Waste management Public Health Environmental and Occupational Health General Medicine Contamination Nuclear Energy Plutonium chemistry Internal dose Monitoring data Environmental science Radiation monitoring Laboratories |
| Zdroj: | Radiation Protection Dosimetry. 146:144-147 |
| ISSN: | 1742-3406 0144-8420 |
| Popis: | This paper provides an outline of an individual monitoring programme for internal contamination with Pu compounds and some of the knowledge obtained from experience of inhalation incidents that occurred over the past few decades at the Japan Atomic Energy Agency, Nuclear Fuel Cycle Engineering Laboratories (JAEA-NCL). Most of the incidents resulted in minor exposure doses, being an average of 0.1 mSv at a mixed oxide plant and 1.5 mSv at a reprocessing plant. Only two incidents involving three workers resulted in exposure over the regulatory dose limits of that time. The maximum exposure dose, an effective dose equivalent of 90 mSv, was assessed for a worker involved in the incident that took place at the reprocessing plant in 1993. Only faecal measurements have been used in final dose assessments because alternative monitoring data have rarely been available. Further investigations on the physicochemical properties specific to Pu compounds in workplaces have therefore been needed to improve not only the accuracy of internal dose assessments but also the nasal swab method useful in deciding medical intervention. |
| Databáze: | OpenAIRE |
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