Pipeline Tariff Quality Compliance per GPA 2261, FERC Standards
Enter mole percentages. Total should be between 90% and 100%.
Leave blank if not available. These values are checked against spec limits when provided.
If you have measured HHV or SG, enter them here to override composition-based calculations.
Understand gas quality specifications, pipeline tariff requirements, and gas processing fundamentals
The calculator evaluates HHV (heating value), H2S, CO2, N2, O2, water dewpoint, hydrocarbon dewpoint, and total inerts against pipeline tariff specifications per GPA 2261 and FERC standards. It flags any out-of-spec parameters and suggests processing recommendations.
H2S is typically limited to 4 ppm (0.25 grain/100 scf) for pipeline quality gas. CO2 is usually capped at 2 mol% for most US pipelines, while LNG feed specifications require less than 50 ppm CO2.
The calculator includes Generic US Pipeline, Gulf Coast (TX/LA/MS), Northeast US (stricter sulfur and O2 limits), Rocky Mountain (higher inerts tolerance), and LNG Feed Gas specifications. Each reflects regional tariff requirements for contaminant limits.
Most pipeline tariffs specify 950-1100 Btu/scf gross heating value. LNG feed gas specifications require a narrower range. The calculator checks the gas composition against the selected specification template.
It checks natural gas composition against pipeline tariff quality specifications including HHV, H2S, CO2, N2, O2, water dewpoint, and HC dewpoint per GPA 2261, FERC, and regional pipeline standards.
The calculator evaluates gas against GPA 2261, FERC pipeline quality requirements, and regional pipeline tariff standards.
It evaluates HHV, H2S, CO2, N2, O2, water dewpoint, HC dewpoint, and total inerts, and provides processing recommendations if specs are not met.