ISO 5735-1:2024

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ISO 5735-1:2024 is an international standard for non-destructive testing (NDT) on railway rails in track using ultrasonic methods. It focuses on ensuring comparable results when detecting discontinuities (like internal defects) in railway rails, specifically flat-bottom (Vignole) rails of 43 kg/m or higher. The standard outlines the principles and requirements for testing systems and equipment used in this process, whether fitted to dedicated test vehicles or manually propelled devices.