Dean, J; Collins, S; Van Es, E; Keightley, L; Russell, B; Shearman, R; Woods, S (2019) Environmental Radioactivity Proficiency Test Exercise 2018 - Final Report. NPL Report. IR 56

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Abstract

The results of NPL's twenty-fourth Environmental Radioactivity Proficiency Test Exercise are reported. Six different sample types were offered: an aqueous mixture of one alpha emitter and three beta emitters (designated `AB'), an aqueous mixture of three alpha emitters (`A1'), an aqueous mixture of three beta emitters (`B1'), an aqueous mixture of four gamma emitters (`GH'), a second aqueous mixture of four gamma emitters (`GL') and a sample of contaminated concrete (`C2'). In total, 594 results were submitted; 584 were analysed and, of these, 74% were found to be `In Agreement' with the NPL Assigned Values.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	IR 56
Subjects:	Ionising Radiation > Radioactivity
Divisions:	Environment
Last Modified:	19 Sep 2019 09:28
URI:	https://eprintspublications.npl.co.uk/id/eprint/8506