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E DIN IEC 61250 VDE 0491-3-13:2026-04

Nuclear power plants

Instrumentation and control systems important to safety – Detection of leakage in coolant systems

(IEC 45A/1633/CDV:2025); Text in German and English
Class/Status: Draft, valid
Released: 2026 -04 Published: 2026-03 -06
VDE Art. No.: 1400654
End of objection deadline: 2026-05-06

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The document defines the requirements for instrumentation needed to detect leakage from reactor coolant systems of light water nuclear reactors. Methods of leak detection and characteristics of different methods of detection are described, and the differentiating between allowable and abnormal leakages are given.

This Document is related to the following Topics (in bold):

27	ENERGY AND HEAT TRANSFER ENGINEERING
27.010	Energy and heat transfer engineering in general
27.015	Energy efficiency. Energy conservation in general
27.060	Burners. Boilers
27.070	Fuel cells
27.075	Hydrogen technologies
27.080	Heat pumps
27.100	Power stations in general
27.120	Nuclear energy engineering
27.140	Hydraulic energy engineering
27.160	Solar energy engineering
27.180	Wind turbine energy systems
27.190	Biological sources and alternative sources of energy
27.200	Refrigerating technology

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E DIN IEC 61250 VDE 0491-3-13:2026-04

Nuclear power plants

Instrumentation and control systems important to safety – Detection of leakage in coolant systems

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