title: (60)Co in cast steel matrix: A European interlaboratory comparison for the characterisation of new activity standards for calibration of gamma-ray spectrometers in metallurgy.
abstract: Two series of activity standards of (60)Co in cast steel matrix, developed for the calibration of gamma-ray spectrometry systems in the metallurgical sector, were characterised using a European interlaboratory comparison among twelve National Metrology Institutes and one international organisation. The first standard, consisting of 14 disc shaped samples, was cast from steel contaminated during production ("originally"), and the second, consisting of 15 similar discs, from artificially-contaminated ("spiked") steel. The reference activity concentrations of (60)Co in the cast steel standards were (1.077±0.019) Bqg(-1) on 1 January 2013 12h00 UT and (1.483±0.022) Bqg(-1) on 1 June 2013 12h00 UT, respectively.
authors.affiliation: EC-JRC-IRMM, Institute for Reference Materials and Measurements, Retieseweg 111, 2440 Geel, Belgium. Electronic address: faidra.tzika@ec.europa.eu.
authors.forename: Faidra
authors.initials: F
authors.lastname: Tzika
authors.affiliation: PTB, Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany.
authors.forename: Oleksiy
authors.initials: O
authors.lastname: Burda
authors.affiliation: EC-JRC-IRMM, Institute for Reference Materials and Measurements, Retieseweg 111, 2440 Geel, Belgium.
authors.forename: Mikael
authors.initials: M
authors.lastname: Hult
authors.affiliation: PTB, Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany.
authors.forename: Dirk
authors.initials: D
authors.lastname: Arnold
authors.affiliation: CIEMAT, Metrología de Radiaciones Ionizantes, Avda. Complutense 40, 28040 Madrid, Spain.
authors.forename: Belén Caro
authors.initials: BC
authors.lastname: Marroyo
authors.affiliation: CMI, Czech Metrology Institute, Radiová 1a, CZ-102 00 Praha 10, Czech Republic.
authors.forename: Pavel
authors.initials: P
authors.lastname: Dryák
authors.affiliation: ENEA-INMRI, Via Anguillarese, 301 Santa Maria di Galeria, 00123 Roma, Italy.
authors.forename: Aldo
authors.initials: A
authors.lastname: Fazio
authors.affiliation: CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), bât 602 PC111, CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Laurent
authors.initials: L
authors.lastname: Ferreux
authors.affiliation: CIEMAT, Metrología de Radiaciones Ionizantes, Avda. Complutense 40, 28040 Madrid, Spain.
authors.forename: Eduardo
authors.initials: E
authors.lastname: García-Toraño
authors.affiliation: SMU, Slovenský metrologický ústav, Karloveská 63, 842 55 Bratislava 4, Slovak Republic; Strojnícka Fakulta Slovenskej Technickej Univerzity v Bratislave, Nám. Slobody 17, Slovak Republic.
authors.forename: Andrej
authors.initials: A
authors.lastname: Javornik
authors.affiliation: STUK, Radiation and Nuclear Safety Authority, P.O.Box 14, FIN-00881, Helsinki, Finland.
authors.forename: Seppo
authors.initials: S
authors.lastname: Klemola
authors.affiliation: IFIN-HH, 30 Reactorului Street, 077125 Magurele, Ilfov, Romania.
authors.forename: Aurelian
authors.initials: A
authors.lastname: Luca
authors.affiliation: BEV/PTP, Bundesamt für Eich, und Vermessungswesen, Arltgasse 35, A-1160 Wien, Austria.
authors.forename: Hannah
authors.initials: H
authors.lastname: Moser
authors.affiliation: IJS, Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia.
authors.forename: Marijan
authors.initials: M
authors.lastname: Nečemer
authors.affiliation: CIEMAT, Metrología de Radiaciones Ionizantes, Avda. Complutense 40, 28040 Madrid, Spain.
authors.forename: Virginia
authors.initials: V
authors.lastname: Peyrés
authors.affiliation: IST/CTN, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal.
authors.forename: Mario
authors.initials: M
authors.lastname: Reis
authors.affiliation: IST/CTN, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal.
authors.forename: Lidia
authors.initials: L
authors.lastname: Silva
authors.affiliation: CMI, Czech Metrology Institute, Radiová 1a, CZ-102 00 Praha 10, Czech Republic.
authors.forename: Jaroslav
authors.initials: J
authors.lastname: Šolc
authors.affiliation: SMU, Slovenský metrologický ústav, Karloveská 63, 842 55 Bratislava 4, Slovak Republic.
authors.forename: Anton
authors.initials: A
authors.lastname: Svec
authors.affiliation: NCBJ, Narodowe Centrum Badań Jądrowych, RC POLATOM, ul. Andrzeja Sołtana 7, 05-400 Otwock, Świerk, Poland.
authors.forename: Zbigniew
authors.initials: Z
authors.lastname: Tyminski
authors.affiliation: IJS, Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia.
authors.forename: Branko
authors.initials: B
authors.lastname: Vodenik
authors.affiliation: EC-JRC-IRMM, Institute for Reference Materials and Measurements, Retieseweg 111, 2440 Geel, Belgium.
authors.forename: Uwe
authors.initials: U
authors.lastname: Wätjen
keywords: Cast steel, metallurgy; EURAMET; Gamma-ray spectrometry; Intercomparison exercise; Ionising radiation; Metrology