IEC 62401:2017 pdf download

IEC 62401:2017 pdf download.Radiation protection instrumentation – Alarming personal radiation devices (PRDs) for the detection of illicit trafficking of radioactive material
1 Scope
This document applies to alarming radiation detection instruments that are pocket-sized, carried on the body and used to detect and indicate the presence and general magnitude of gamma radiation fields. Neutron detection may also be provided. Personal Radiation Devices (PRDs) alert the user to the presence of a source of radiation that is distinctly above the measured average local background radiation level. They are not intended to provide a measurement of the ambient or personal dose equivalent rate. The object of this document is to describe design and functional criteria along with testing methods for evaluating the performance of the PRDs used for detection of illicit trafficking of radioactive material (e. g., for border radiation monitoring). This document does not apply to the ambient or personal dose equivalent rate meters which are covered in IEC 60846-1 or IEC 61 526, respectively. If the manufacturer states that the PRD can be used for radiation protection purposes, compliance with IEC 60846-1 or IEC 61 526 will be needed.
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 – Part 395: Nuclear instrumentation: Physical phenomena, basic concepts, instruments, systems, equipment and detectors IEC 60068-2-1 1 , Basic environmental testing procedures – Part 2-11: Tests – Test Ka: Salt mist IEC 62706:201 2, Radiation protection instrumentation – Environmental, electromagnetic and mechanical performance requirements IEC 62755, Radiation protection instrumentation – Data format for radiation instruments used in the detection of illicit trafficking of radioactive materials
3 Terms and definitions, abbreviated terms and symbols, quantities and units
3.1 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-395, as well as the following, apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:3.1 .1 A-weighted sound level frequency weighting of an acoustic spectrum according to a standardized frequency response curve based on the frequency response of the human ear 3.1 .2 accuracy quality which characterizes the ability of a measuring instrument to provide an indicated value close to a true value of the measurand 3.1 .3 alarm audible, visual, or other signal activated when the instrument reading exceeds a pre-set value or falls outside of a pre-set range 3.1 .4 background radiation field in which there are no external sources present other than those in the natural radiation field at the location of the measurements3.1.1 4 response reading or indication of the PRD 3.1.1 5 standard deviation positive square root of the variance 3.1.1 6 standard test conditions prescribed range for influence quantities to be used during testing of a measuring instrument 3.1.1 7 type test test for conformity evaluation on the basis of one or more specimens of a product representative of the production 3.1.1 8 routine test test to which an individual device is subjected during or after manufacture to ascertain whether it complies with certain criteria 3.1.1 9 acceptance test contractual test to prove to the customer that the device meets certain conditions of its specification 3.1.20 uncertainty <of measurement> parameter, associated with the result of a measurement, that characterizes the dispersion of the values that could reasonably be attributed to the measurand Note 1 to entry: Uncertainty of measurement comprises, in general, many components. Some of these components may be evaluated from statistical distribution of the results of series of measurements and can be characterized by experimental standard deviations. The other components, which can also be characterized by experimental standard deviations, are evaluated from assumed probability distributions based on experience or other information.