1. Action TR1201: Indicative pipeline specs/multiparty use
Complex even with simplifying assumptions but as an indicative guide:
There are numerous other factors to be considered in applying this; two examples:
Increased diameter vs. increased length
In most cases additional capability is provided through pipeline duplication and a larger increment is provided through increasing the length of the duplication rather than the diameter
Use of compression
Development of existing compressor station may not trigger Planning Act process; ‘switchover’ point between pipeline and compression solution (e.g. between single / multi party) may be critical
For more information please refer to the Transmission Planning Code (NG website)
Specifically section 9 describes the factors considered when planning network reinforcement
Indicative maximum flows for 150km pipeline; inlet pressure 75 barg, outlet pressure 50barg
Nominal Pipeline diameter
Max Flow mscm/d
Cost Ratio
450 mm
(18 inch) 6
600 mm
(24 inch) 12 1
900 mm
(36 inch) 34
1.15
1050 mm
(42 inch) 51
1200 mm
(48 inch) 73
1.21 1