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IEC 61226 Ed. 3.0 Edition 07/2009
Nuclear power plants - Instrumentation and control important to safety - Classification of instrumentation and control functions
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Abstract

IEC 61226:2009 establishes a method of classification of the information and command functions for nuclear power plants, and the instrumentation and control systems and equipment that provide those functions, into categories that designate the importance to safety of the function. The resulting classification then determines relevant design criteria. Is applicable to all the information and command functions and the instrumentation and control systems and equipment that provide those functions. The main changes with respect to the previous edition are listed below:
- to introduce a definition for "non-hazardous stable state";
- to clarify limits of categories;
- to clarify requirements related to equipment used for beyond design events.

Status

Standard - Active

Origin

Technical Committee :
45A : Instrumentation, control and electrical power systems of nuclear facilities

Implementation

start of the vote on the project      date of ratification (dor)   
end of the vote on the project      date of anouncement (doa)   
start of the vote on the final project      date of publication (dop)   
end of the vote on the final project      date of withdrawal (dow)   


Publication Official Journal
of the Grand-Duchy of Luxembourg
Reference

Relations

Evolutions
IEC 60951-3 Ed.3.0 RLV
IEC 61226 Ed.4.0

Relations to older standards
IEC 61226 Ed. 2.0

International Classification for Standards (ICS codes) :

27.120.20 : Nuclear power plants. Safety

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