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IEC 63374:2025 ED1

Nuclear power plants - Instrumentation systems important to safety - Characteristics and test methods of nuclear reactor reactivity meters

Oct 10, 2025

General information

60.60     Oct 10, 2025

IEC

TC 45/SC 45A

International Standard

27.120.20     27.120.10  

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Scope

IEC 63374:2025 specifies the characteristics and test methods for reactivity meters. Other methods for measuring reactivity are not addressed in this document. This document provides guidance for the design, production and operation of reactivity meters. This document is applicable to various types of nuclear reactors that can be described by the neutron kinetic point reactor model, such as pressurized water reactors (PWRs), boiling-water reactors (BWRs) or fast breeder reactors (FBRs). This document is applicable to all on-line measuring instruments that directly obtain reactivity values by measuring the neutron flux. The subject relates to the reactor nuclear parameter measurement domain.

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PUBLISHED
IEC 63374:2025 ED1
60.60 Standard published
Oct 10, 2025