How are DIN Standards developed?
DIN Standards are the results of national, European and/or international standards work. Anyone can submit a proposal for a new standard. Once accepted, the standardization project is carried out by the relevant Standards Committee at DIN, the relevant Technical Committee at the European standards body CEN (CENELEC for electrotechnical standards) and/or the relevant Technical Committee at the international standards body ISO (IEC for electrotechnical projects). In all cases, standards work follows set principles, procedural rules, and rules for the presentation of documents.
Standardization projects involve all stakeholders in the topic at hand, including manufacturers, consumers, businesses, research institutes, public authorities and testing bodies. These delegate experts to represent their interests on one or more of DIN's 3,400 technical committees, which are overseen by some 70 standards committees. The latter also send delegations and experts to represent German interests in standardization projects at CEN/CENELEC and ISO/IEC. The permanent staff at DIN coordinate the standardization process and are responsible for overall project management, ensuring the uniformity and consistency of the German technical standards collection.
Standards are consensus-based, that is, they are developed by experts with the aim of arriving at a common standpoint. In doing so, they consider technological developments, economic viability and international harmonization.
DIN Standards are reviewed at least every five years. If a standard no longer reflects the current state of technology, it is either revised or withdrawn.
Standards work at DIN results in the publication of either a national standard, or a European Standard or International Standard adopted at national level. Their origin is indicated as follows:
DIN (plus number, e.g. DIN 4701)
This is a national standard that has been developed at national level only and is primarily of interest nationally. It may also be a precursor to a document intended to be published internationally. The number for a draft national standard is preceded by an "E" (for "Entwurf") while that for a prestandard is preceded by a "V" (for "Vornorm"). Although the numbering system is not officially classified, standards on the same subject sometimes have similar numbers.
National standards with electrotechnical relevance are indicated as "DIN VDE" standards (e. g. DIN VDE 0100).
DIN EN (plus number, e. g. DIN EN 71)
This is a European Standard that has been adopted, unchanged, at national level and which has been developed by the one of the European standards organizations, CEN, CENELEC or ETSI. As a member of CEN/CENELEC, DIN is obliged to adopt all European Standards and to withdraw any national standards that might conflict with them. The number itself does not indicate the subject matter, except as follows:
Electrotechnical European Standards developed at CENELEC are given a number between 50000 and 59999, while those developed by IEC and adopted by CENELEC have a number between 60000 and 69999. ETSI standards have a 300000 number.
DIN EN ISO (plus number, e. g. DIN EN ISO 306)
This is a European Standard that is identical to an International Standard (i.e. it was developed by ISO and adopted by CEN) and has been adopted, unchanged, at national level. As a member of CEN/CENELEC, DIN is obliged to adopt all European Standards and to withdraw any national standards that might conflict with them. The number does not indicate the subject matter.
DIN ISO or DIN IEC (plus number, e. g. DIN ISO 720)
This is an International Standard which has been adopted, unchanged, at national level. The number does not indicate the subject matter.
Further standard products include:
Vornorm (prestandard): DIN V (plus number, e. g. DIN V 1201)
A document is published as a prestandard ("Vornorm") when there are reservations regarding the content or when it has not been drawn up strictly according to the official standards development process. Normally the intention is either to eventually publish the prestandard as a full standard – possibly with modifications – or to withdraw it without replacement at some future time.
Beiblätter (supplements) give additional information on a DIN Standard (explanatory notes, examples, advice on the application of the standard, etc.) but no further specifications.
A DIN-Fachbericht (Technical Report) is either the result of the work of a DIN committee, or the adoption of an international document, such as a Technical Report (TR), Publicly Available Specification (PAS), International Workshop Agreement (IWA), an IEC Technology Trend Assessment (TTA), or an international Guide. DIN Technical Reports do not have the status of a standard.
DIN-Fachbericht CEN/TR and DIN-Fachbericht CLC/TR are European Technical Reports which have been adopted, unchanged, at national level.
Other documents (e.g. those drawn up by a consortium) can be published within a short time without following the entire standardization process and with a lower level of consensus.