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Equipment Spacing Calculator

DOT 49 CFR 192, API 2510, NFPA 59A

Professional Equipment Spacing Calculator
Determines minimum separation distances between process equipment, buildings, and property lines per DOT, API, and NFPA requirements for natural gas facilities.

Facility Type

Source Equipment

Target Location

Learn the Engineering Theory

Understand compressor station layout and DOT spacing requirements

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Common Spacing Requirements

Compressor to Building:
  • 50 ft minimum (DOT/API)
  • 100 ft if building is occupied
Vent to Ignition Source:
  • 100 ft minimum (atmospheric vent)
  • 150 ft for high-pressure blowdown
Condensate Tank:
  • 50 ft to buildings
  • 100 ft to property line

Limitations & Assumptions

  • Distances are minimum code requirements - may need increase for thermal radiation or dispersion analysis
  • State and local requirements may be more stringent than federal
  • LNG facilities have additional NFPA 59A requirements not fully covered here
  • Consult with qualified engineer for final layout decisions

Standards & References

  • 49 CFR 192
    Transportation of Natural Gas by Pipeline
  • API 2510
    Design and Construction of LPG Installations
  • NFPA 59A
    Standard for LNG Production, Storage, and Handling
  • API RP 500
    Electrical Area Classification

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