Gas quality requirements

Requirements Unit Minimum Maximum
Gross Calorific Value (a) kWh/Nm3 10.81 12.39
Wobbe Index (a) kWh/Nm3 13.82 15.07
Hydrocarbon Dew Point °C (1 to 69 barg)   -2
Water Dew Point °C (at 69 barg)   -10
Oxygen content ppm by vol   1000
Carbon Dioxide content Mole %   2.5
Hydrogen Sulphide content  ppm by vol
Total Sulphur at any time mg/m3   30

(a)  Combustion reference temperature is 25°C.

IUK does not have the facility to blend gas which does not comply with these specifications.


Operating conditions

Requirements Unit Minimum Maximum
Required pressure at the IBT Delivery Point barg 45.0 70.0
Required pressure at the IZT Delivery Point barg 55.0 80.0
Required temperature at the IBT Delivery Point °C 1 28
Required temperature at the IZT Delivery Point °C 2 38