VDI/VDE 2180 Blatt 1:2018-02

This standard applies to installations in the process industry, such as the chemical and petrochemical industries, especially when they are subject to the German 'Störfallverordnung' (Major Accidents Regulation 12. BImSchV). It is based on the standard DIN EN 61511 (VDE 0810). Process installations are preferably protected with non-process control systems. Safety instrumented systems (SIS) are used if other measures are not applicable, inadequate or - assuming a comparable reduction of risk - not cost-efficient. The use of measures which are simple, comprehensible and immediately effective will usually result in solutions which are both reliable and cost-efficient. General principles for the safeguarding of industrial process plants by means of process control engineering are described for the typical case of a maximum annual requirement of the PCE safety function ('requirement mode'). Compared to the previous series of standards VDI/VDE 2180, the structure has been modified and a number of terms have been redefined. In order to reach common accord between German and international standardisation this adaptation was necessary.