IEC 61563:2019 pdf download

IEC 61563:2019 pdf download.Radiation protection instrumentation – Equipment for measuring the activity concentration of gamma-emitting radionuclides in foodstuffs
1 Scope
This document applies to instruments used to measure the activity and/or activity concentration of gamma-emitting radionuclides in food and/or foodstuffs. This document applies to instruments used both as gross count type instruments and pulse height analysing type instruments used in field conditions and in measurement facilities. This document does not apply to high-resolution spectrometers that use germanium detectors. The instruments to which this document applies can be used to measure the activity and activity concentration of gamma-emitting radionuclides for a wide variety of samples, such as soil, sewage, plant, and animal life. The object of this document is to establish performance requirements, to provide test methods and to specify general characteristics, general test conditions, and radiological, environmental, mechanical and electromagnetic characteristics to be used to determine whether an instrument meets the requirements of this document. The test results provide information to end-users and manufacturers regarding the capability of instrument for reliable measurement of the activity and/or activity concentration of gamma-emitting radionuclides. This document does not apply to sample preparation.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-395, International Electrotechnical Vocabulary (IEV) – Part 395: Nuclear instrumentation: Physical phenomena, basic concepts, instruments, systems, equipment and detectors IEC 60086-2, Primary batteries – Part 2: Physical and electrical specifications IEC 60529, Degrees of protection provided by enclosures (IP Code) IEC 61187, Electrical and electronic measuring equipment – Documentation IEC 62706, Radiation protection instrumentation – Environmental, electromagnetic and mechanical performance requirements ISO 11929, Determination of the characteristic limits (decision threshold, detection limit and limits of the coverage interval) for measurements of ionizing radiation – Fundamentals and application
3 Terms and definitions, abbreviated terms, quantities, units and symbols
For the purposes of this document, the following terms and definitions, as well as those given in IEC 60050-395 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: 3.1 IEC Electropedia: available at http://www.electropedia.org/ ISO Online browsing platform: available at http://www.iso.org/obp Terms and definitions 3.1.1 activity concentration activity per unit mass (Bq kg -1 ) or activity per unit volume (Bq m -3 ) of a given radionuclide. [SOURCE: IEC 60050-395:2014, 395-01-09, modified: Activity per unit mass mentioned in IEV 395-01-08 is added to a meaning of activity concentration defined as activity per unit volume in IEV 395-01-09.] 3.1.2 blank sample dummy sample that contains the same substance that is to be measured in the sample but does not contain radioactive material other than Naturally Occurring Radioactive Materials (NORMs)3.1.7 effective range of measurement absolute value of the difference between the two limits of a nominal range 3.1.8 upper limit of effective range of measurement maximum activity or activity concentration to be measured at which the performance of an instrument meets the requirements of its specifications 3.1.9 lower limit of effective range of measurement A 0 minimum activity or activity concentration to be measured over which the performance of an instrument meets the requirement of its specifications 3.1.10 decision threshold value of the estimator of the measurand, which, when exceeded by the result of an actual measurement using a given measurement procedure of a measurand quantifying a physical effect, is used to decide that the physical effect is present. Note 1 to entry: The decision threshold is defined such that in cases where the measurement result, y, exceeds the decision threshold, y*, the probability of a wrong decision, namely that the true value of the measurand is not zero if in fact it is zero, is less or equal to a chosen probability α. Note 2 to entry: If the result, y, is below the decision threshold, y*, it is decided to conclude that the result cannot be attributed to the physical effect; nevertheless, it cannot be concluded that it is absent. [SOURCE: ISO 11929:2019, 3.12]