Purpose and objectives

The SN EN 15085-3+A1:2023 standard outlines specific design requirements for the welding of railway vehicles and components. The main objective of this standard is to enhance safety and reliability in railway applications through stringent guidelines for welding processes. By providing a clear framework for construction and classification rules, it aims to ensure that all welded structures can withstand operational demands, thereby supporting overall railway integrity and performance.

Scope: who must comply

The SN EN 15085-3+A1:2023 standard applies to manufacturers and operators within the railway industry, specifically those involved in the design, construction, and maintenance of railway vehicles and components. This includes:

• Railway vehicle manufacturers: Companies producing new railway vehicles or modifying existing ones.
• Component suppliers: Organizations providing parts that require welding in their assembly.
• Maintenance firms: Businesses responsible for the ongoing upkeep and repair of railway vehicles.

Complying with this standard is essential for ensuring the safety and quality of welded components in railway applications, where structural integrity is paramount.

How SN EN 15085-3+A1:2023 relates to other standards

The SN EN 15085-3+A1:2023 standard is part of a broader framework of standards related to railway applications. Notable related standards include:

• EN 12663: This standard outlines structural requirements for railway vehicles, ensuring they can endure operational stresses under various conditions.
• ISO 3834: Focused on quality requirements for fusion welding, this standard complements the SN EN 15085-3 by detailing the necessary welding quality assurance processes.
• CEN/TS 15085-4: This technical specification provides supplementary guidance on the classification of welding performance, further supporting compliance with the SN EN 15085-3 series.

Revision history and current status

The SN EN 15085-3+A1:2023 is published by the CEN (European Committee for Standardization) and is the latest revision that enhances previously established guidelines in SN EN 15085-3:2022. The most recent changes include updates to design requirements and clearer definitions of safety categories and stress factors, ensuring the standard reflects contemporary practices and technological advancements in railway welding.