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Usuda, Shigekazu*; Magara, Masaaki; Esaka, Fumitaka; Yasuda, Kenichiro; Kokubu, Yoko; Lee, C. G.; Miyamoto, Yutaka; Suzuki, Daisuke; Inagawa, Jun; Sakurai, Satoshi; et al.
Journal of Nuclear and Radiochemical Sciences, 11(2), p.A5 - A9, 2011/01
In the analysis of IAEA safeguards environmental samples, isotope ratios of ultra-trace amounts of uranium and plutonium in samples taken from nuclear facilities are determined to detect undeclared nuclear materials and activities. In order to keep and enhance the reliability of the measurement results, validation of analytical methods and estimation of measurement uncertainty in such ultra-trace analysis should be properly done in accordance with worldwide standards. In this paper, the current activities on achievement of QA/QC (quality assurance and quality control) and estimation of measurement uncertainty in the ultra-trace analysis at a clean chemistry laboratory (CLEAR) of JAEA are reported.
Usuda, Shigekazu; Magara, Masaaki; Esaka, Fumitaka; Sakurai, Satoshi; Lee, C. G.; Yasuda, Kenichiro; Kokubu, Yoko; Suzuki, Daisuke; Shinohara, Nobuo; Murata, Fujio*
no journal, ,
JAEA (Japan Atomic Energy Agency) has been conducting the environmental sample analysis, which is one of the IAEA's safeguards measures. In the analysis, isotope ratios of ultra-trace amounts of nuclear materials (uranium and plutonium) in the samples taken from nuclear facilities are determined to detect "environmental signature" of undeclared nuclear materials and activities. In order to enhance the reliability of the measurement results, validation of analytical methods and estimation of uncertainty of measurement in such ultra-trace analysis are required at the level of worldwide standardization. In this presentation, the authors introduce the current activities and future perspectives of achievement of QA/QC (quality assurance and quality control) and the estimation of uncertainty as a member of the IAEA Network Analytical Laboratories for the environmental samples.
Usuda, Shigekazu*; Magara, Masaaki; Esaka, Fumitaka; Yasuda, Kenichiro; Kokubu, Yoko; Lee, C. G.; Miyamoto, Yutaka; Suzuki, Daisuke; Inagawa, Jun; Sakurai, Satoshi; et al.
no journal, ,
In order to keep and enhance the reliability of the measurement results, validation of analytical methods and estimation of measurement uncertainty in such ultra-trace analysis should be properly done in accordance with worldwide standards. the authors introduce current activities on achievement of QA/QC (quality assurance and quality control) and estimation of measurement uncertainty in isotopic analysis of the ultra-trace uranium and plutonium in environmental samples for safeguards at CLEAR (Clean Laboratory for Environmental Analysis and Research) of JAEA.