ABSTRACT
The reliability of gas production and transportation depends heavily on the many stages between gas emerging from a production field until it ends up in, for instance, a gas stove on the European mainland. This may include include purification, transportation over large distances, blending, pressurizing and so on. A common denominator for every step is that there can be interruptions, either unforeseen due to malfunctions, or scheduled, due to routine maintenance, or similar issues. In addition, there may be downtime in the sense that although one is able to deliver gas, one may not be able to deliver at all times with the purity properties that the customers want. From a producer and transporter point of view, this is to be expected.
