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dc.contributor.authorSOBIECH-MATURA KATARZYNAen_GB
dc.contributor.authorLUTTER GUILLAUMEen_GB
dc.contributor.authorVAN AMMEL RAFen_GB
dc.contributor.authorMARISSENS GERDen_GB
dc.contributor.authorEMTEBORG HAKANen_GB
dc.contributor.authorHULT MIKAELen_GB
dc.identifier.isbn978-92-76-17330-4 (online)en_GB
dc.identifier.issn1831-9424 (online)en_GB
dc.identifier.otherEUR 30142 ENen_GB
dc.identifier.otherOP KJ-NA-30142-EN-N (online)en_GB
dc.description.abstractA proficiency test (PT) on the measurements of I-131, Cs-134 and Cs-137 in maize powder was organised by European Commission Directorate-General (EC DG) Joint Research Centre in Geel on request of the EC DG for Energy. This PT was an integral part of the EC's work of realising verification of Member State's obligations towards Article 35 of the Euratom Treaty. It serves also as a quality control programme which JRC-Geel is coordinating in order to assess the quality of the results collected in the Radioactivity Environmental Monitoring (REM) database. The PT reference material was prepared by spiking blank maize powder. The samples were sent to 123 laboratories of which 120 laboratories submitted their results. The evaluation of the PT results was performed according to ISO 13528:2015. The zed (z) and zeta (ζ) and En scores, were calculated. The z scores of the reported results for I-131 were acceptable for 92% of laboratories. For both Cs-134 and Cs-137 they were acceptable for 94% laboratories. The ζ scores were satisfactory for 66%, 56% and 68% of results for I-131, Cs-134 and Cs-137 respectively. In case of En score the number of consistent results was the same as for ζ score.en_GB
dc.description.sponsorshipJRC.G.2-Standards for Nuclear Safety, Security and Safeguardsen_GB
dc.publisherPublications Office of the European Unionen_GB
dc.titleEvaluation of the 2017 EC Proficiency Test on 131I, 134Cs and 137Cs in maize powderen_GB
dc.typeEUR - Scientific and Technical Research Reportsen_GB
dc.identifier.doi10.2760/54966 (online)en_GB
JRC Directorate:Nuclear Safety and Security

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