Instrumentation, Control and Electrical Power Systems of Nuclear Facilities
-
Technical committeeTypeAcronymIEC 61771CommitteePublished year1995Description
Specifies verification and validation procedures for the design of t he control-room system of nuclear power plants and gives verificatio n and validation criteria for the assignment of functions and for the integrated control-room system.
Technology -
Technical committeeTypeAcronymIEC 61513CommitteePublished year2011KeywordsDescription
Instrumentation and control (I&C) systems important to safety may be implemented using conventional hard-wired equipment, computer-based (CB) equipment or by using a combination of both types of equipment (see Note 1). IEC 61513:2011 provides requirements and recommendations for the overall I&C architecture which may contain either or both technologies. The main technical changes with regard to the previous edition are as follows:
- alignment with the latest revisions of IAEA documents;
- alignment with new editions of IEC 60880, IEC 61226, IEC 62138, IEC 62340 and IEC 60987;
- alignment with significant advances of software engineering techniques;
- integration of requirements for staff training.Technology -
Technical committeeTypeAcronymIEC 61504CommitteePublished year2017Description
IEC 61504:2017 supplements IEC 61559-1 and includes radiation monitoring functions important to safety that are outside the scope of IEC 61559-1. It applies to centralized systems having a direct role in the achievement or maintenance of radiation protection in nuclear facilities. These systems perform functions such as:
- radiation protection of plant discharge; interlock of control functions to prevent or to mitigate accidental release of radioactive material;
- radiation and environmental monitoring functions to support monitoring of and response to accidents;
- provide information to process control or safety systems for use in control or interlock functions. This new edition includes the following significant technical changes with respect to the previous edition:
- it supplements IEC 61559-1 and integrates IEC 61559-2;
- it describes integration of functions including equipment covered by other IEC standards.Technology -
Technical committeeTypeAcronymIEC 61502CommitteePublished year1999Description
Applies to systems used for monitoring the vibratory behaviour of the internal structures of pressurized water reactors (core barrel, thermal shield, upper and lower core support, etc.) and fuel assemblies on the basis of neutron fluctuations observed outside the vessel and vessel vibrations. The main objective of monitoring is to detect degradation of internal structures.
Technology -
Technical committeeTypeAcronymIEC 61501CommitteePublished year1998Description
Describes the principles, the terminology, the characteristics, the requirements and the testing methods related to instrumentation and measurement of the neutron fluence rate using mean square voltage techniques for nuclear reactor control.
Technology -
Technical committeeTypeAcronymIEC 61500CommitteePublished year2018Description
IEC 61500:2018 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.
IEC 61500:2018 establishes requirements for data communication which is used in systems performing category A functions in nuclear power plants. It covers also interface requirements for data communication of equipment performing category A functions with other systems including those performing category B and C functions and functions not important to safety. This document gives requirements for functions and properties of on-line plant data communication by reference to IEC 60880 and IEC 60987, produced within the framework of IEC 61513. It requires categorisation of the communication functions in accordance with IEC 61226. This new edition includes the following significant technical changes with respect to the previous edition:
- the changes introduced to previously referenced standards have been confirmed to apply;
- relevant newly published standards have been referenced;
- lessons learned from several industrial applications have been incorporated.Technology -
Technical committeeTypeAcronymIEC 61497CommitteePublished year1998Description
Provides recommendations for the design and implementation of electrical interlocks used actively or passively to prevent unsafe conditions or to ensure specific safe conditions and states during the operation of nuclear power plants.
Technology -
Technical committeeTypeAcronymIEC 61468CommitteePublished year2021Description
IEC 61468:2021 applies to in-core neutron detectors, viz. self-powered neutron detectors (SPNDs), which are intended for application in systems important for nuclear reactor safety: protection, instrumentation and control. This document contains SPND characteristics and test methods. In this document, the main sources of errors, and the possibilities for their minimization are also considered. This document contains requirements, recommendations and instructions concerning selection of SPND type and characteristics for various possible applications.
This document about SPNDs uses the basic requirements of IEC 61513 and IEC 60568 and complements them with more specific provisions in compliance with IAEA Safety Guides.
This second edition cancels and replaces the first edition, published in 2000, and its Amendment 1, published in 2003.
This edition includes the following significant technical changes with respect to the previous edition:
a. Title modified.
b. Justify the requirements for SPND characteristics in terms of influencing factors.
c. Align the terminology with the current state of the regulatory framework.Technology -
Technical committeeTypeAcronymIEC 61250CommitteePublished year1994Description
Defines the requirements for instrumentation needed to detect leakage from reactor coolant systems of light water nuclear reactors. Methods of leak detection are described, and characteristics of different methods of detection and of differentiating between allowable and abnormal leakages are given.
Technology -
Technical committeeTypeAcronymIEC 61227CommitteePublished year2008Description
IEC 61227:2008 identifies the Human-Machine Interface (HMI) requirements for discrete controls, multiplexed conventional systems, and soft control systems. To be used with IEC 60964 and IEC 61772. Is intended for application to the design of new main control rooms in nuclear power plants designed to IEC 60964. This new edition takes into account the fact that computer design engineering techniques have advanced significantly during recent years.
Technology