QUALITY PARAMETERS OF TRANSMITTED GAS
See measurement points for quality parameters of gas fuel transmitted through the transit gas pipeline system on the TGPS map
See measurement locations and measurement frequency for quality parameters at the different points of the transit gas pipeline system
See average daily gross calorific value (GCV) and Wobbe index at TGPS
See average monthly gross calorific value (GCV) and Wobbe index at TGPS
The requirements apply to the quality of transmitted gas according to the standards of the Yamal-Europe transit gas pipeline and the TGPS tariff
Quality parameters | Unit of measure | TGPS |
Gross Calorific Value* | MJ/m3 | 39,895 ± 0,4186 |
Gross Calorific Value* | kWh/m3 | 11,082 ± 0,1163 |
Net Calorific Value** | MJ/m3 | 33,4944 ± 0,4187 |
Net Calorific Value** | kWh/m3 | 9,3040 ± 0,1163 |
Methane | % mol | ≥ 92,00 |
Ethane | % mol | ≤ 4,00 |
Propane, butane and heavy hydrocarbons | % mol | ≤ 2,00 |
Nitrogen | % mol | ≤ 2,00 |
Carbon dioxide | % mol | ≤ 1,00 |
Oxygen |
| trace amounts |
Mercaptan sulphur | mg/m3 | ≤ 5,6 |
Hydrogen sulphid | mg/m3 | ≤ 2,0 |
Total sulphur | mg/m3 | ≤ 20,0 |
Water dew point at 3.92 MPa | oC | ≤ - 8,0 |
Hydrocarbon dew point at operating pressure | oC | ≤ 0 |
Hydrocarbon dew point at 2.7 MPa | oC | ≤ 0 |
Absolute pressure at entry | MPa | ≥ 6,1 |
Absolute pressure at exit | MPa | ≥ 6,1 |
* - value for normal conditions
** - value for contract conditions
The values presented in the above table refer to contract parameters, i.e.:
- pressure at atmospheric pressure - 0.101325 MPa
- temperature – 293.15 K (20ºC)
- for combustion process 293.15 K
Conversion factor for volume of gas from temperature 20ºC to normal conditions (0ºC) is 0,93168.
Conversion factor for contracted capacity expressed in m3 GOST/h (in 20ºC) to transmission ability expressed in kWh/h is 10,322 kWh/m3 GOST.
