Ehdotuksen tiedot

This ISO Standard specifies the requirements on rail aluminothermic welding, including the requirements for approval process, laboratory tests, approval of welder/contractor, as well as the acceptance criteria of aluminothermic welds in track. In this document, 43 kg/m – 75 kg/m new vignole rails of the same profiles and same steel grades are the subject of welding. This document is restricted to butt welding for connecting rail ends. This document does not cover safety regulation of welding operation. Compliance with the requirements of this standard does not of itself ensure the suitability of a welding process for specific conditions of track and traffic. The standard does not cover welds made between different rail sections, differently worn rails and different rail grades. In addition to the definitive requirements, this standard also requires the items detailed in Clause 4 to be documented. For compliance with this standard, it is important that both the definitive requirements and the documented items be satisfied.