Gas Quality

Standard Natural Gas Specifications 

       
Your gas must meet these specifications to be accepted on our system.     

Compound/Characteristic Metric Min Metric Max Metric Units Imperial Min Imperial Max Imperial Units
Heating Value * 35   MJ/m3 939.4   BTU/ft3
Wobbe Index 46.75 50.60 MJ/m3 1253 1357 BTU/ft3
Hydrocarbon Dewpoint   -10 °C @ operating pressure   14 °F @ operating pressure
Water Content   65 mg/m3   4.06 LB.MMcf
Hydrogen Sulfide   6 mg/m3   0.261 gr/100 ft3
Mercaptan Sulphur   6 mg/m3   ~1/4 gr/100 ft3
Total Sulphur   23 mg/m3   ~1 gt/100 ft3
Nitric Oxide   15 ml/m3   15 ppm by volume
Total Oxide of Nitrogen   15 ml/m3   15 ppm by volume
Carbon Dioxide   2 % by volume    2 % by volume
Oxygen   0.4 % by volume   0.4 % by volume
Temperature   50 °C   122 °F
Other substances    Other substances should be commercially free from sand, dust, gums, oils, impurities, and other objectionable substances.

Notes:

  1. All m³ @ 101.325 kPa, 15°C
  2. ft³ @ 14.73 psia, 60°F
  3. 6 mg/m³ H2S equates to 4 ppm or more specifically, 4.140 ppm

* TransGas offers a low heating value surcharge service. This lets customers deliver gas with a heating value below 35.0 MJ/m³ onto our system. We will approve this service where low heating values do not affect the quality of downstream deliveries.