Matic Korun - Academia.edu (original) (raw)

Papers by Matic Korun

Applied Radiation and Isotopes, 2004

Due to biased potassium activity results in the proficiency test soil samples, measurements of a ... more Due to biased potassium activity results in the proficiency test soil samples, measurements of a set of control samples containing potassium compounds with known concentrations of potassium were performed in order to establish the traceability of potassium activity results in to the unit of mass. The radius and the mass of the control samples were equal to the radius and the mass of the proficiency test samples. The density of samples in both cases varied between 1 and 2 g/cm 3. No influence of sample density on the potassium activity results could be detected at the accuracy level achieved. The source of disagreement could not be found within the participating laboratory.

Applied Radiation and Isotopes, 2010

The new edition of the International vocabulary of metrology-basic and general concepts and assoc... more The new edition of the International vocabulary of metrology-basic and general concepts and associated terms (VIM) defines metrological traceability in a different way than was defined in the previous edition. The reference to an ''unbroken chain of comparisons'' is replaced by a ''chain of calibrations.'' Calibrations, unlike comparisons, render possible an interpolation of the quantity values between indicated parameters where the calibration was performed. Calibrations of software may be performed using software-measurement standards as well. Furthermore, the traceability of quantities having a minor influence on the measurement result is not mandatory. As a consequence of these modifications, the traceability of gamma-ray spectrometric results can also be attained when gammaray spectrometry is implemented other than as a relative method.

Accreditation and Quality Assurance, 2006

ABSTRACT The motives for and the implementation of a quality system complying with the requiremen... more ABSTRACT The motives for and the implementation of a quality system complying with the requirements of the ISO/IEC 17025 standard in a gamma-ray spectrometry laboratory are briefly described, as well as its influence on the laboratory's work and output. The use of the quality system as a tool for managing and controlling the state of the laboratory is described. Two examples of control and improvement of the laboratory's performance are given.

Accreditation and Quality Assurance, 2002

Accreditation and Quality Assurance, 2006

Accreditation and Quality Assurance, 2006

ABSTRACT The motives for and the implementation of a quality system complying with the requiremen... more ABSTRACT The motives for and the implementation of a quality system complying with the requirements of the ISO/IEC 17025 standard in a gamma-ray spectrometry laboratory are briefly described, as well as its influence on the laboratory's work and output. The use of the quality system as a tool for managing and controlling the state of the laboratory is described. Two examples of control and improvement of the laboratory's performance are given.

Applied Radiation and Isotopes, 2004

Due to biased potassium activity results in the proficiency test soil samples, measurements of a ... more Due to biased potassium activity results in the proficiency test soil samples, measurements of a set of control samples containing potassium compounds with known concentrations of potassium were performed in order to establish the traceability of potassium activity results in to the unit of mass. The radius and the mass of the control samples were equal to the radius and the mass of the proficiency test samples. The density of samples in both cases varied between 1 and 2 g/cm 3 . No influence of sample density on the potassium activity results could be detected at the accuracy level achieved. The source of disagreement could not be found within the participating laboratory. r

Applied Radiation and Isotopes, 2010

The new edition of the International vocabulary of metrology-basic and general concepts and assoc... more The new edition of the International vocabulary of metrology-basic and general concepts and associated terms (VIM) defines metrological traceability in a different way than was defined in the previous edition. The reference to an ''unbroken chain of comparisons'' is replaced by a ''chain of calibrations.'' Calibrations, unlike comparisons, render possible an interpolation of the quantity values between indicated parameters where the calibration was performed. Calibrations of software may be performed using software-measurement standards as well. Furthermore, the traceability of quantities having a minor influence on the measurement result is not mandatory. As a consequence of these modifications, the traceability of gamma-ray spectrometric results can also be attained when gammaray spectrometry is implemented other than as a relative method.

Accreditation and Quality Assurance, 2006

ABSTRACT A statistical analysis of findings in assessments by an accreditation body, external aud... more ABSTRACT A statistical analysis of findings in assessments by an accreditation body, external audits and internal audits in an accredited testing laboratory for gamma-ray spectrometry is presented. The frequencies of observations reported in different areas were examined and analysed. The differences are interpreted in terms of the varying importance associated with the different areas as perceived by auditors and assessors.

Accreditation and Quality Assurance, 2002

ABSTRACT The methodology for statistical processing of reports on nonconforming work and unexpect... more ABSTRACT The methodology for statistical processing of reports on nonconforming work and unexpected situations which occur in the laboratory of Gamma-Ray Spectrometry Group at the Jožef Stefan Institute is presented. The results of statistical analyses are discussed. Pareto analysis has shown that the majority of cases of nonconforming work originates in errors made by personnel. The sociological and psychological aspects of strategies aimed at preventing careless work are discussed. It is proposed that motivation should be used as a tool against habits that lessen awareness during routine operations. Specific recommendations regarding communication with personnel are given.

Applied Radiation and Isotopes, 2004

Due to biased potassium activity results in the proficiency test soil samples, measurements of a ... more Due to biased potassium activity results in the proficiency test soil samples, measurements of a set of control samples containing potassium compounds with known concentrations of potassium were performed in order to establish the traceability of potassium activity results in to the unit of mass. The radius and the mass of the control samples were equal to the radius and the mass of the proficiency test samples. The density of samples in both cases varied between 1 and 2 g/cm 3. No influence of sample density on the potassium activity results could be detected at the accuracy level achieved. The source of disagreement could not be found within the participating laboratory.

Applied Radiation and Isotopes, 2010

The new edition of the International vocabulary of metrology-basic and general concepts and assoc... more The new edition of the International vocabulary of metrology-basic and general concepts and associated terms (VIM) defines metrological traceability in a different way than was defined in the previous edition. The reference to an ''unbroken chain of comparisons'' is replaced by a ''chain of calibrations.'' Calibrations, unlike comparisons, render possible an interpolation of the quantity values between indicated parameters where the calibration was performed. Calibrations of software may be performed using software-measurement standards as well. Furthermore, the traceability of quantities having a minor influence on the measurement result is not mandatory. As a consequence of these modifications, the traceability of gamma-ray spectrometric results can also be attained when gammaray spectrometry is implemented other than as a relative method.

Accreditation and Quality Assurance, 2006

ABSTRACT The motives for and the implementation of a quality system complying with the requiremen... more ABSTRACT The motives for and the implementation of a quality system complying with the requirements of the ISO/IEC 17025 standard in a gamma-ray spectrometry laboratory are briefly described, as well as its influence on the laboratory's work and output. The use of the quality system as a tool for managing and controlling the state of the laboratory is described. Two examples of control and improvement of the laboratory's performance are given.

Accreditation and Quality Assurance, 2002

Accreditation and Quality Assurance, 2006

Accreditation and Quality Assurance, 2006

ABSTRACT The motives for and the implementation of a quality system complying with the requiremen... more ABSTRACT The motives for and the implementation of a quality system complying with the requirements of the ISO/IEC 17025 standard in a gamma-ray spectrometry laboratory are briefly described, as well as its influence on the laboratory's work and output. The use of the quality system as a tool for managing and controlling the state of the laboratory is described. Two examples of control and improvement of the laboratory's performance are given.

Applied Radiation and Isotopes, 2004

Due to biased potassium activity results in the proficiency test soil samples, measurements of a ... more Due to biased potassium activity results in the proficiency test soil samples, measurements of a set of control samples containing potassium compounds with known concentrations of potassium were performed in order to establish the traceability of potassium activity results in to the unit of mass. The radius and the mass of the control samples were equal to the radius and the mass of the proficiency test samples. The density of samples in both cases varied between 1 and 2 g/cm 3 . No influence of sample density on the potassium activity results could be detected at the accuracy level achieved. The source of disagreement could not be found within the participating laboratory. r

Applied Radiation and Isotopes, 2010

The new edition of the International vocabulary of metrology-basic and general concepts and assoc... more The new edition of the International vocabulary of metrology-basic and general concepts and associated terms (VIM) defines metrological traceability in a different way than was defined in the previous edition. The reference to an ''unbroken chain of comparisons'' is replaced by a ''chain of calibrations.'' Calibrations, unlike comparisons, render possible an interpolation of the quantity values between indicated parameters where the calibration was performed. Calibrations of software may be performed using software-measurement standards as well. Furthermore, the traceability of quantities having a minor influence on the measurement result is not mandatory. As a consequence of these modifications, the traceability of gamma-ray spectrometric results can also be attained when gammaray spectrometry is implemented other than as a relative method.

Accreditation and Quality Assurance, 2006

ABSTRACT A statistical analysis of findings in assessments by an accreditation body, external aud... more ABSTRACT A statistical analysis of findings in assessments by an accreditation body, external audits and internal audits in an accredited testing laboratory for gamma-ray spectrometry is presented. The frequencies of observations reported in different areas were examined and analysed. The differences are interpreted in terms of the varying importance associated with the different areas as perceived by auditors and assessors.

Accreditation and Quality Assurance, 2002

ABSTRACT The methodology for statistical processing of reports on nonconforming work and unexpect... more ABSTRACT The methodology for statistical processing of reports on nonconforming work and unexpected situations which occur in the laboratory of Gamma-Ray Spectrometry Group at the Jožef Stefan Institute is presented. The results of statistical analyses are discussed. Pareto analysis has shown that the majority of cases of nonconforming work originates in errors made by personnel. The sociological and psychological aspects of strategies aimed at preventing careless work are discussed. It is proposed that motivation should be used as a tool against habits that lessen awareness during routine operations. Specific recommendations regarding communication with personnel are given.