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Electronic Engineering Terms & Definitions

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  • Term
    Definition
  • IEC 61508-2:2010 applies to any safety-related system, as defined by IEC 61508-1, that contains at least: one electrical, electronic or programmable electronic element; applies to all elements within an E/E/PE safety-related system; specifies how to refine the E/E/PE system safety requirements(...)
  • IEC 61508-3:2010 applies to any software forming part of a safety-related system or used to develop a safety-related system within the scope of IEC 61508-1 and IEC 61508-2; provides specific requirements applicable to support tools used to develop and configure a safety-related system within(...)
  • IEC 61508-4:2010 contains the definitions and explanation of terms that are used in parts 1 to 7 of the IEC 61508 series of standards. The definitions are grouped under general headings so that related terms can be understood within the context of each other. However, it should be noted that(...)
  • IEC 61508-5:2010 provides information on the underlying concepts of risk and the relationship of risk to safety integrity (see Annex A); a number of methods that will enable the safety integrity levels for the E/E/PE safety-related systems to be determined (see Annexes C, D, E, F and G). The(...)
  • IEC 61508-6:2010 contains information and guidelines on IEC 61508-2 and IEC 61508 3. Annex A gives a brief overview of the requirements of IEC 61508-2 and IEC 61508-3 and sets out the functional steps in their application. Annex B gives an example technique for calculating the probabilities of(...)
  • IEC 61508-7:2010 contains an overview of various safety techniques and measures relevant to IEC 61508-2 and IEC 61508-3.The references should be considered as basic references to methods and tools or as examples, and may not represent the state of the art.
  • Gives requirements for the specification, design, installation, operation and maintenance of a safety instrumented system, so that it can be confidently entrusted to place and/or maintain the process in a safe state.
  • Provides guidance on the specification, design, installation, operation and maintenance of Safety Instrumented Functions and related safety instrumented system as defined in IEC 61511-1.
  • IEC 61513:2011 provides requirements and recommendations for the overall I&C architecture which may contain either or both technologies.
  • Specifies general characteristics, general test procedures, radiation characteristics as well as electrical, mechanical, safety and environmental characteristics. The only requirements specified for associated readout systems are those which affect its accuracy of readout of the personal dose(...)
  • IEC 61558-2-10:2014 deals with the safety of separating transformers with high insulation level and separating transformers with output voltages exceeding 1 000 V. Transformers incorporating electronic circuits are also covered by this standard.
  • Specifies general characteristics, general test procedures, radiation, electrical, safety, and environmental characteristics and the identification certificate for centralized systems intended for continuous monitoring of radiation and/or levels of radioactivity installed in nuclear(...)
  • Identifies requirements pertinent to the integration of the monitoring functions into a centralized system. Considers requirements for general and design characteristics, electrical performance requirements and tests, mechanical performance requirements and tests, software performance(...)
  • Applies to apparatus for the non-destructive measurement of radioactive contamination of fur and other cloth samples for the presence of gamma emitting radionuclides.
  • Specifies the main performance characteristics of instruments intended for measurement of specific activity of beta-emitting radionuclides in foodstuffs, their methods of testing and documentation requirements.
  • Specifies the main performance characteristics of instruments, intended for measurement of specific activity of gamma-emitting radionuclides in foodstuffs, their methods of testing and documentation requirements.
  • Addresses the instruments and associated methods for measuring isotopes 220 and 222 of radon and their subsequent short-lived decay products in gases
  • Specifies the main performance characteristics of instruments intended for measurement of airborne radon volume activity, their specific method of testing and documentation requirements. Is to be used with IEC 61577-1.
  • Describes the specific requirements for instruments measuring the volumetric activity of airborne short-lived radon decay products and/or their ambient potential alpha-energy concentration outdoors, in dwellings, and in workplaces including underground mines.
  • Concerns the System for Test Atmospheres with Radon (STAR) needed for testing, in a reference atmosphere, the instruments measuring radon and RnDP. Provides guidance for those facing problems associated with the production of equipment for setting up reference atmospheres for radon and its(...)

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