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) at TGPS

See average monthly gross calorific value (GCV) 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.


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