Gas quality requirements
|Gross Calorific Value (a)||kWh/Nm3||10.81(b)||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 15°C.
(b) Subject to an IUK shipper’s reasonable endeavours to provide gas at a minimum of 10.94 kWh/Nm3 at the Delivery Point.
IUK does not have the facility to blend gas which does not comply with these specifications.
|Required pressure at the NTS and SILK Delivery Points||barg||45.0||70.0|
|Required pressure at the FTS Delivery Point||barg||55.0||80.0|
|Required temperature at the NTS and SILK Delivery Points||°C||1||28(c)|
|Required temperature at the FTS Delivery Point||°C||2||38|
(c) The maximum temperature for offtake at SILK is 20°C