Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 68(9): 659-673 (2019)


低濃度放射能測定におけるISO 11929に従った測定の不確かさと特性値の導出Derivation of Uncertainty in Measurement and Characteristic Limits for Low Radioactive Concentration Measurement According to ISO 11929

原子力規制庁長官官房技術基盤グループRegulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority (S/NRA/R) ◇ 106–8450 東京都港区六本木1–9–9 ◇ 1–9–9 Roppongi, Minato-ku, Tokyo 106–8450, Japan

発行日:2019年9月15日Published: September 15, 2019

本稿では,低濃度放射能測定における測定の不確かさと,関連する特性値である決定しきい値,検出限界及び包含区間の上下限の導出とその適用について述べる。特に測定対象物を放射性廃棄物としての規制の管理下から解放することを目的としたクリアランス測定におけるISO 11929に従った考え方を整理する。

This paper explains the derivation and application of uncertainty in measurement and related characteristic limits, including decision threshold, detection limit, and upper and lower limits of coverage interval, for low radioactive concentration measurement according to ISO 11929. These concepts are organized especially for clearance measurement, which is performed to evaluate materials to be released from control as radioactive waste.

Key words: clearance measurement; uncertainty in measurement; ISO 11929

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