NF ISO 23300-1, F50-233-1 (10/2024)

This document specifies requirements relating to the approval and/or certification of welding processes and companies, welders, inspectors, as well as factory or roadside acceptance of welded joints. This document applies to the following rail welding processes: a) flash welding (FBW); b) gas welding (GPW); c) aluminothermic welding (ATW); d) shrouded arc welding (EAW). In this document, the welding concerns new flat-bottomed rails with a mass of 43 kg/m – 75 kg/m of identical profiles and steel grades. This document does not specify requirements or test methods specific to each welding process; these will be specified in later parts of the ISO 23300 series. This document deals with butt welding of rail ends. This document does not cover welding work intended for the construction of track switches, the installation of electrical connections or the repair of rails. This document does not cover safety regulations relating to welding work. This document does not specify the qualification of people and companies carrying out rail welding.
(Automatic translation from French)