Technical standards available at the CRAI


AENORmás is a database published and updated by AENOR (Spanish Association for Standardisation and Certification) which contains the full text of all UNE standards, including those standards which adopt a European or international standard (CEN, CENELEC, ETSI, ISO, etc.). It also provides the equivalence between the Spanish and the international standards.

The database allows the visualization of all the standards, but not their download. Exceptionally, the CRAI staff can download the contents of this resource, but only for private and non-profit use, and for studying, teaching or researching purposes. To request the downloading of documents you must contact the CRAI or fill in this form and send it to crai.sescelades(ELIMINAR)

  • Access the database by clicking on the following link.
  • Consult the user's guide of AENORmás by clicking on the following link.


Access to the full text of all the technical standards in force drawn up by the Institute of Electrical and Electronics Engineers (IEEE).


Other technical standards

Collection of technical standards on paper from various institutions and organisations available at the Sescelades CRAI: Sescelades Standards (Science and Technology).