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Pipe Volume & Gas Line Pack Calculator

Professional Engineering Tool with Compressibility Factor Analysis

Professional Pipeline Engineering Tool
Calculates physical pipe volume and gas line pack with compressibility factor corrections per AGA Report No. 8 simplified method. Suitable for inventory management, hydrotesting, line pack calculations, and operational planning per ASME B31.8 and API MPMS Chapter 12.
Calculation Mode:

Pipe Dimensions

in
Actual internal diameter (not nominal)
ft
Total pipeline length

Physical Volume

Formula: V = π/4 × D² × L
Standard cylindrical volume per GPSA Section 17.

• Liquid inventory & batch tracking
• Hydrostatic test water requirements
• Drainage, purging & inerting volumes
• Pig launcher/receiver sizing

Engineering Notes

• Use actual ID (not nominal pipe size)
• Water density: 62.37 lb/ft³ @ 60°F
• Pig displacement: 95-98% of pipe vol
• Hydrotest: Add 3%/1000 psi compression
• Gas: Sutton + DAK correlations (±1-2%)
• Custody transfer: Use AGA-8 Detail

Standards & References

  • ASME B31.8
    Gas Transmission and Distribution Piping Systems
  • API MPMS Chapter 12
    Calculation of Petroleum Quantities
  • AGA Report No. 8
    Compressibility and Supercompressibility Factors