This European Standard is applicable to pipelines with a maximum operating pressure (MOP) over 16 bar for the carriage of processed, non-toxic and non-corrosive natural gas according to EN ISO 13686 in onland gas supply systems, where: pipeline elements are made of unalloyed or low-alloyed carbon steel; pipeline elements are joined by welds, flanges or mechanical couplings; the pipeline is not located within commercial or industrial premises as an integral part of the industrial process on these premises except for any pipelines and facilities supplying such premises; the design temperature of the system is between -40 °C and 120 °C inclusive. The standard applies to onshore pipeline systems from the point where the pipeline first crosses what is normally accepted as battery limit between on and offshore, e. g.: first isolation valve; the base of steep sea shelf; above the high water/low water mark onto mainland; an island. The pipeline standard also applies to a pipeline system with a starting point onshore, also when parts of the pipeline system on the mainland subsequently cross fjords, lakes etc.