ISO 15085 WELDING OF RAILWAY VEHICLES AND COMPONENTS

ISO 15085 What is the Welding Process of Railway Vehicles and Components?

ISO 15085 is used to describe the Welding Process of Railway Vehicles and Components. Organizations that manufacture, repair or overhaul the parts of railway vehicles must have the EN 15085-2 certificate.

How is Classification Made for 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 the welded joints. Before the certification studies begin, the certification level must be determined in accordance with the TS EN 15085-2 standard. There are four different certification levels according to the standard:

Level CL1 is for enterprises producing rolling stock and equipment with welding performance class A to D of welded joints.
Level CL2 is for enterprises producing rolling stock equipment with welding performance class of welded joints from C2 to D.
Level CL3 is for enterprises producing rolling stock equipment with welding performance class D of welded joints.
The CL4 level is for businesses that design, buy or sell rolling stock.

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

CP Class A is only for fully penetrating and easily accessible welds in production and maintenance work.
Class CP B1 is a high safety category and is only for fully penetrating and easily accessible welds in production and maintenance work.
Class CP B2 is a medium safety category and is applied outside of full penetration welds and volumetric testing capability. Surface crack testing should be possible in production and maintenance work.
The CP C1 class applies except for fully penetrating welds and volumetric testing facility. Surface crack testing should be possible in production and maintenance work.
CP C2, C3 and D classes apply to all types of welding without special requirements. In production works, only visual control is sufficient.

What are the Requirements for TS EN 15085 Certification?

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

The first requirement is quality requirements. According to the standard, businesses have to prove that they are operating in accordance 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 resource coordinators in the enterprise should be determined depending on the size of the enterprise, its capacity, the prevalence of production and the number of subcontractors. In addition, the duties and authorities of the resource coordinators must comply with the standard. Coordinators must be shown in the organization chart and approved by the certification body. In addition, resource coordinators should have their own decision-making power. By the way, if the resource coordinator is not an employee of the enterprise, the conditions stipulated in the standard must be complied with. For each welding process, there should be at least two welders in compliance with the applicable standards for the material group, connection type and size. The company must also have inspection personnel.

The third requirement is equipment requirements. The work area in the enterprise must be of the size and quality to ensure that the welding work is correct, reliable and of high quality and to show a continuous performance.

Another requirement is the welding procedure specifications. According to the EN 15085-2 standard, the Welding Procedure Specification must be within the scope of 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 the appropriate quality level in the production activities of enterprises producing railway vehicles and components. Businesses that have this certificate have proven their work on the following issues both when receiving the certificate and during the interim audits every year during the three-year validity period:

Welding processes comply with relevant welding method approvals and welding specifications
The personnel performing the welding work must be certified in accordance with their qualifications.
Welding works are carried out in accordance with the relevant documents such as the welding sequence plan and the source control plan and in a controlled manner.
Having a responsible welding engineer in the business as the welding coordinator and being able to make independent decisions from production
Determination of the welding performance class with the data from the design.

You can refer to Kioscert for more information.

iso 15085 welding of railway vehicles and components