Transport pipeline/Long-distance gas pipeline

Depending on the organization, this may include transit pipelines or those of the gas supplier.

Main line/Supply line

This category includes the lines which serve the distribution. In the case of gas, these are usually the lines belonging to the low-pressure network. The ServiceLines are connected to the DistributionLines. It is also possible to supply a house connection with medium pressure. In this context, medium-pressure lines at local utilities will also become a DistributionLine.

Service line

In general, the house connection lines or lines to the end-user are included here. These can also include internal lines of industrial plants or the development of larger sites, if these are relevant.

ServiceLines are usually distinguished more precisely. This includes the collection of whether the line is used by one or more end-customers. If possible, this should be done by means of an evaluation and any internal lines must be taken into account.

Internal line

Internal line starts with the main shut-off device of the consumer (usually in the connection room of the building). These are the lines within the building or area for which the consumer is responsible.