International Electrotechnical Vocabulary Part 821: Signalling and Security Apparatus for Railways
|Publication Date:||1 April 1998|
|ICS Code (Railway engineering (Vocabularies)):||01.040.45|
|ICS Code (Environment. Health protection. Safety (Vocabularies)):||01.040.13|
1) The IEC (International Electrotcchnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Nationa: Committees). The object of the IEC is to promote intcrnational cooperation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participatc in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participatc in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on thc relevant subjects since each technical committee has representation from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical reports or guides and they are accepted by the National Committecs in that sense.
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This standard has been prepared by Working Group' 821: "Signalling and sccurity apparatus for railways" of IEC Technical Committee 1: Terminology. This Group is a joint IECKJIC (International Union of Railways) Working Group, and comprises experts from both organizations.