CONNECTING PIPELINE FROM FRANCE

As part of the expansion of the Transitgas transport system in the years 1997 to 2003, a connection to the French gas grid was created. The 36”* pipeline enters Switzerland near Rodersdorf and runs for its greater part from west to east across the Swiss Jura to reach the existing pipeline system at the Lostorf station after almost 55 km. In Seewen another Swiss gas Industry exit metering station is connected through which natural gas for the Swiss market is drawn off.

* 1 inch = 2.54 cm

THE SLIDE-GATE VALVE STATIONS

Along the whole of the natural gas pipeline there are stations at maximum intervals of 15 km in which remote-controlled slide-gate valves are installed for cutting off the flow of gas. All line valves are fitted with a drive which takes its energy from the gas pressure in the pipeline. The gas drive allows the slide-gate valves to be closed at any time – even in the event of an outage in the power supply.