Pipeline Drying Calculator

Pipeline Specifications

Nominal Diameter

inches

Pipeline Length

miles

Operating Pressure

psig

Temperature & Dewpoint

Operating Temperature

°F

Target Dew Point

°F

Methanol Purity

Quick Reference

Dewpoint Requirements:
• Gathering: 40-60°F
• Transmission: 20-40°F
• High-pressure storage: -40°F

Methanol Properties:
• Absorption: 0.7 lb H₂O/lb MeOH
• Density: 6.63 lb/gal @ 60°F
• TLV: 200 ppm (toxic)
• Flash point: 52°F

📚 Learn the Theory

Comprehensive coverage of air, nitrogen, vacuum drying methods, dewpoint specifications, and drying time calculations.

Read Engineering Guide →

About This Calculator

Calculates methanol slug requirements, air/nitrogen drying time estimates, and hydrate formation analysis for post-hydrotest pipeline commissioning.

Standards & References:

GPSA: Fig. 20-3 water content data
API RP 1110: Pipeline pressure testing
ASME B31.8: Gas transmission piping
Katz: Hydrate formation correlation

Key Calculations:

Methanol volume for water absorption
Hydrate formation temperature
Air/N₂ drying time estimates
Recommended slug volumes

Frequently Asked Questions

What does the Pipeline Drying Calculator do?

It calculates methanol requirements, drying time, and dewpoint specifications for post-hydrotest pipeline commissioning per GPSA and API RP 1110.

What standards does this pipeline drying tool follow?

The calculator follows GPSA and API RP 1110 standards for pipeline commissioning.

Can this calculator estimate methanol requirements for hydrate prevention?

Yes, it calculates methanol requirements and air/nitrogen drying time for hydrate prevention during pipeline commissioning.

Pipeline Specifications

Temperature & Dewpoint

Quick Reference

📚 Learn the Theory

Drying Results

About This Calculator

Standards & References:

Key Calculations:

Frequently Asked Questions

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Hydrate Prediction

Pipe Volume

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