BS EN 16725 specifies restoration of cast austenitic manganese steel for fixed crossings and cradles for crossings with movable parts, designed to be flash butt welded or bolted to adjoining rails manufactured according to BS EN 15689. BS EN 16725 also applies to flash welded leg ends of austenitic manganese steel crossings and the associated tri-metal zone.
BS EN 16725 specifies the approval systems for consumables and procedures used in manual metal arc and flux cored metal deposit repair welding. BS EN 16725 includes the quality-related tasks and responsibilities and qualifications of personnel involved in the electric arc repair welding of cast crossings.
The purpose of BS EN 16725 is to unify restoration of cast manganese crossings by electric arc welding across Europe.
Note: BS EN 16725 may be applied for procedures in situ, at line side, or at out of track locations.
BS EN 16725 on restoration and repair of manganese crossings is useful for:
Restoration of cast manganese crossings by electric arc welding is a special process requiring the coordination of welding and grinding activities to establish confidence and reliability of the weld deposit and safety of the line. Incorrect selection of materials, consumables, or procedures may result in serious track welding failure.
BS EN 16725 provides control systems for the approval and qualification of welding processes, WPS, welding consumables, contractors, and welders for the successful delivery of welds on crossings in service.
BS EN 16725 provides quality control and increases the deposition rate of the repair process, which results in a more durable repair also increases overall productivity and may reduce the track time required to complete restoration and repair of manganese crossings.
EN 16725:2016