LNG Quality Specifications
|
LNG QUALITY SPECIFICATIONS |
|||
|
Value |
Unit |
Specifications |
Notes |
|
Wobbe Index |
KWh/Nm3 |
13.066-16.328 |
|
|
Gross Calorific Value (GCV) |
KWh/Nm3 |
11.131-12.647 |
The Operator may consider the possibility of accepting a cargo with GCV in the range 11.011KWh/Nm3 to 11.131KWh/Nm3 or 12.647 KWh/Nm3 to 12.986 KWh/Nm3, if after unloading this cargo and mixing with the stored LNG in terminal tanks, the GCV of the resulting LNG will be within the mentioned range. |
|
LNG Density |
Kg/m3 |
430 – 478 |
The Operator may consider the possibility of accepting a cargo in the range 420.3 Kg/m3 to 430 Kg/m3 or 478 Kg/m3 to 483.1 Kg/m3, if after unloading this cargo and mixing with the stored LNG in terminal tanks, the Density of the resulting LNG will be within the mentioned range. |
|
Molecular Weight |
Kg/Kmol |
16.52 – 18.88 |
|
|
Methane |
% mol |
85.0 min 97.0 max |
The Operator may consider the possibility of accepting a cargo with Methane concentration in the range 80 to 85 % mole or 97 to 99.8 % mole, if after unloading this cargo and mixing with the stored LNG in terminal tanks, the value of Methane concentration of the resulting LNG will be within the mentioned range. |
|
i-Butane & n- Butane |
% mol |
4 max |
|
|
i- Pentane & n-Pentane |
% mol |
2 max |
|
|
Nitrogen |
% mole |
1.24 max |
|
|
Hydrogen sulfide (H2S) |
mg/Nm3 |
5.0 max |
|
|
Total sulphur |
mg/Nm3 |
30.0 max |
|
|
Temperature |
0C |
-159.5 max |
The average temperature of LNG in all tanks of LNG vessel at the loading port should not be greater than -159.5°C. |
|
LNG Tank Pressure |
mbar(g) |
100 max |
On arrival |