IEC 62484-2020 pdf free download – Radiation protection instrumentation – Spectrometric radiation portal monitors (SRPMs) used for the detection and identification of illicit trafficking of radioactive material.
This document defines the performance requirements of installed monitors used for thedetection and identification of gamma emitters and the detection of neutron radiation emitters.These monitors are commonly known as spectrometric radiation portal monitors or SRPMs.They are used to monitor vehicles，cargo containers， people,or packages and are typicallyused at national and international border crossings and ports of entry.SRPMs may be used atany location where there is a need for this type of monitoring.
This document establishes the general,radiological,climatic，mechanical,electric andelectromagnetic and documentation requirements and associated test methods. A summary ofthe performance requirements is provided in Table 11.An informative listing of environmentalrequirements from lEc 62706 is provided in Table 12.
This document does not apply to the performance of non-spectroscopic portal monitorscovered in lEC 62244.
Normative references
The following documents are referred to in the text in such a way that some or all of theircontent constitutes requirements of this document.For dated references，only the editioncited applies. For undated references, the latest edition of the referenced document (includingany amendments) applies.
IEC 60050-395, International Electrotechnical Vocabulary (IEV) – Part 395: Nuclearinstrumentation: Physical phenomena,basic concepts，instruments，systems,equipment anddetectors
IEC 60068-2-5，Environmental testing – Part 2-5: Tests – Test S: Simulated solar radiation atground level and guidance for solar radiation testing and weathering
IEC 62706，Radiation protection instrumentation – Recommended climatic,electromagneticand mechanical performance requirements and methods of tests
IEC 62755,Radiation protection instrumentation – Data format for radiation instruments usedin the detection of illicit trafficking of radioactive materials
IAEA-TECDOC-1311: September 2002，Prevention of the inadvertent movement and ilicittrafficking of radioactive materials
3Terms and definitions, abbreviated terms and symbols, quantities and units3.1 Terms and definitions
For the purposes of this document, the following terms and definitions, as well as those givenin lEC 6o050-395,apply.
ISo and lEC maintain terminological databases for use in standardization at the followingaddresses:
.IEC Electropedia: available at http://www.electropedia.orgl
. Iso Online browsing platform: available at http://www.iso.orglobp
3.1.1
alarm
audible，visual，or other signal activated when the instrument reading exceeds a pre-setvalue, falls outside of a pre-set range,or when the instrument detects and/or identifies thepresence of the source of radiation according to a pre-set condition
3.1.2
coefficient of variationcov
statistical measure of the dispersion of data points in a data series around the mean of thosedata points expressed in %
3.1.3
confidence indication
indication provided by the monitor on the reliability assigned to the determined identification
3.1.4
detection assembly
component of the SRPM that contains the detectors and associated electronic devices
3.1.5
detection zone
location where radiation emitted by an object or person being monitored may be detected by the detection assembly(s) Note 1 to entry: For two-sided SRPMs, the detection zone is located between detection assemblies; for single sided SRPMs, the detection zone is adjacent to the front face of the detection assembly.
3.1.6
evaluation distances
distance between an evaluation test source and the exterior surface of the detection assembly(s) that faces the detection zone (see Figure 1 )
3.1 .7
false alarm
alarm not caused by an increase in radiation level over background conditions
3.1.8
false identification
misinterpretation of data being measured by a system leading to the incorrect identification of radionuclide(s) that are present or the identification of radionuclides that are not present.IEC 62484 pdf download.