ISO 15085 WELDING OF RAILWAY VEHICLES AND COMPONENTS

ISO 15085 is used to define the welding process of railway vehicles and components. Organizations that carry out the production, repair, or overhaul of parts of railway vehicles must have the EN 15085-2 certificate.

How is Classification Done for the TS EN 15085 Certificate?

The fourth part of the TS EN 15085 standard includes certification levels. These levels depend on the welding performance class of welded joints. Before certification activities begin, it is necessary to determine the certification level in accordance with the TS EN 15085-2 standard. According to the standard, there are four different certification levels:

• CL1 level is for enterprises producing railway vehicles and equipment with welding performance classes from A to D.
• CL2 level is for enterprises producing railway vehicle equipment with welding performance classes from C2 to D.
• CL3 level is for enterprises producing railway vehicle equipment with a welding performance class of D.
• CL4 level is for enterprises that design, purchase, or sell railway vehicles.

According to the TS EN 15085 standard, the welding performance classes are determined as follows:

• CP A class is only for fully penetrated and easily accessible welds in production and maintenance work.
• CP B1 class is a high safety category and is only for fully penetrated and easily accessible welds in production and maintenance work.
• CP B2 class is a medium safety category and is applied except for fully penetrated welds and volumetric test options. Surface crack testing must be possible in production and maintenance work.
• CP C1 class is applied except for fully penetrated welds and volumetric test options. Surface crack testing must be possible in production and maintenance work.
• CP C2, C3, and D classes apply to all types of welds without special requirements. Visual inspection alone is sufficient in production work.

What Are the Requirements for TS EN 15085 Certification?

The requirements for companies performing welded production for certification levels are given in the fifth part and annexes of the EN 15085-2 standard.

The first requirement is quality requirements. According to the standard, companies must prove that they operate in compliance with the requirements of EN ISO 3834-2, EN ISO 3834-3, and EN ISO 3834-4 standards.

The second requirement is personnel requirements. The number of welding coordinators in the company should be determined based on the company’s size, capacity, production spread, and number of subcontractors. Additionally, the duties and authorities of the welding coordinators must comply with the standard. Coordinators must be shown in the organizational chart and approved by the certification body. Moreover, welding coordinators must have their own decision-making authority. In the meantime, if the welding coordinator is not an employee of the company, the conditions stipulated in the standard must be followed. For each welding process in the company, there must be at least two welders who comply with the relevant standards for material group, joint type, and size. The company must also have inspection personnel.

The third requirement is equipment requirements. The working area in the company must be of such size and quality to ensure correct, reliable, and high-quality welding work and continuous performance.

Another requirement is welding procedure specifications. According to the EN 15085-2 standard, the company must have a Welding Procedure Specification in accordance with the TS EN ISO 15607 standard for all welding performance classes from CP A to CP C3.

The purpose of TS EN 15085 certification is to ensure an appropriate quality level in the production activities of companies producing railway vehicles and components. Companies holding this certificate prove the following in both the certification and the annual surveillance audits during the three-year validity period:

• The welding processes comply with the relevant welding method approvals and welding specifications
• The personnel performing welding work are certified according to their qualifications
• The welding work is performed in a controlled manner and in compliance with documents such as the welding sequence plan and welding control plan
• A responsible welding engineer acts as the welding coordinator in the company and is able to make independent decisions from production
• The welding performance class is determined based on data from the design

We provide ISO certification services throughout Turkey, especially in Izmir and Denizli. You can contact Kioscert for more information and a price quote.