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Calibration and traceability in high dose dosimetry.

Sharpe, P H G (1998) Calibration and traceability in high dose dosimetry. In: IAEA-SM-356/R6 Proc. International symposium on techniques for high dose dosimetry in Industry, Agriculture and Medicine, 2-5 November 1998, Vienna.

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Accurate dose measurements, traceable to recognized national standards, are an essential component of industrial irradiation processing. Applications such as the sterilization of medical devices and the irradiation of foodstuffs are both highly regulated and international in nature. In order to ensure both the safety of the process, and to facilitate international trade, it is essential that a widely accepted system of calibration and traceability is in place. Mutual equivalence and recognition of high dose dosimetry standards are achieved both by experimental intercomparisons, and by the adoption of standard procedures and methods, including formal accreditation of calibration laboratories by independent third parties. Dose measurements in industrial irradiation plants pose particular difficulties because the behaviour of many dosimetry systems is influenced by the environmental conditions in the plant. In particular, it is not possible to accurately mimic in a calibration laboratory the variable dose rates and temperatures characteristic of industrial plants. Calibration protocols have to be carefully designed to avoid the introduction of significant systematic errors. In this paper, the current status of industrial dosimetry standards and calibration methods are reviewed. Potential sources of error and uncertainty are discussed, and estimates made of the accuracy achievable in industrial dosimetry.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: Ionising Radiation
Ionising Radiation > Dosimetry
Last Modified: 02 Feb 2018 13:18
URI: http://eprintspublications.npl.co.uk/id/eprint/1076

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