CETREN, member of the Spanish Association for Quality:

Cetren acts as Secretariat of 25 Technical Committee for Standardization “Railway Applications” of UNE, Spanish Association for Standardization. CTN 25 field of activity is the standardization of all railway applications, including urban transport by rail, i.e. vehicles and fixed facilities, except for the electrical and electronic aspects that affect this mean of transport. The Spanish Technical Committee for Standardization is a mirror of CEN/TC 256-Railway Applications.

The CTN 25 has 61 spokespeople in the Plenary, who take part in standardization activities together with the observers. These members are entities of various types and are part of the Spanish rail sector:

  • Central Administration (Ministry of Public Works)
  • Autonomous Administrations
  • Railway operators
  • Infrastructure managers
  • Manufacturers

There are 4 subcommittees reporting to the Plenary, which include a total of 8 working groups. In these bodies, around 100 experts collaborate.

Cetren, as Secretariat, acts as a liaison between Committee members, Spanish experts accredited to the CEN/TC 256-Railway Applications (there are more than 100 accreditations currently) and UNE. ”



NB Rail is the coordination group of Notified Bodies in the railway sector.

Notified bodies are independent organizations responsible for performing conformity assessment of products and systems in the scope of 2008/57/EC Directive of the European Parliament and the Council of 17 June 2008, on interoperability of railways system in the Community.

NB Rail is the forum to:

  • Share experiences and exchange views on conformity assessment procedures for a better understanding and application of interoperability directives.
  • Prepare drafts and issue technical recommendations in terms of conformity assessment in the railway sector.
  • Collaborate with European standardization bodies.
  • Make reports on assessment procedures technical aspects.
  • Analyze committee documents and other relevant information related to rail interoperability.
  • Analyze the doubts and problems that arise during the practical application of interoperability directives.



As part of AEC we have opportunity to participate in communities and committees where high-impact knowledge and good practices are shared in an area or sector, with integrated vision of the Quality discipline, present in all economy areas and key sectors.