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E DIN IEC/IEEE 62582-5 VDE 0491-21-5:2026-06

Nuclear power plants – Instrumentation and control important to safety – Electrical equipment condition monitoring methods

Part 5: Optical time domain reflectometry

(IEC 45A/1630/CDV:2025); Text in German and English
Class/Status: Draft, valid
Released: 2026 -06   Published: 2026-05 -29
VDE Art. No.: 1400764
End of objection deadline: 2026-07-29

Note: You can pre-order this document (delivery subject to availability). Valid from 2026-06-01.

This part of IEC/IEEE 62582 series contains methods for monitoring the attenuation condition of optical fibres and cables in instrumentation and control systems using optical time domain reflectometer (OTDR). The document describes the measurements in the detail necessary to produce accurate and reproducible measurements. It also includes the requirements for the measurement system and conditions, and the reporting of the measurement results.