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Pump Station Spacing Calculator

Determine optimal pump station locations based on MAOP, elevation profile, and hydraulic gradient for liquid pipelines.

Pump Station Spacing
Determine optimal pump station locations based on MAOP, elevation profile, and hydraulic gradient. Uses Darcy-Weisbach friction loss with Colebrook-White friction factor. Read the fundamentals →

Fluid Properties

cP

Flow & Pipe

in
in

Pressure Parameters

psig
psig
psig
%

Cost Estimate (Optional)

$
$

Elevation Profile

One point per line: milepost, elevation. Comma or tab separated.

Results

Enter pipeline parameters and elevation profile, then click Calculate.

Formula Reference

Station HP:

HP = Q(GPM) × ΔP / (1714 × η)

Friction Loss:

ΔP = f(L/D)(ρV²/2g₀)/144

Station Spacing:

Spacing ≈ (MAOP - P_suction) / (ΔP/mi + elev gradient)


Standards: ASME B31.4, 49 CFR 195, Darcy-Weisbach, Colebrook-White (API 2610 governs terminal/tank facilities)

Frequently Asked Questions

How is pump station spacing determined for liquid pipelines?

Pump station spacing is determined by the available pressure differential between MAOP and minimum delivery pressure, divided by the friction loss per unit length. Elevation changes along the route also affect spacing between stations.

What does this pump station spacing calculator compute?

This calculator determines optimal pump station locations, horsepower requirements, pressure profiles, and cost estimates for liquid pipeline systems per ASME B31.4 and 49 CFR 195. It accounts for friction losses, elevation changes, and MAOP/min-suction pressure constraints.

What factors affect the number of pump stations required?

Key factors include pipeline length, flow rate, pipe diameter, fluid properties (density and viscosity), elevation profile, MAOP limit, and required delivery pressure. Higher flow rates and longer distances require more stations.

How is pump horsepower calculated for each station?

Pump horsepower is calculated using HP = Q × ΔP / (1714 × η), where Q is flow rate in GPM, ΔP is the differential pressure across the pump in psi, and η is pump efficiency. The constant 1714 is a unit conversion factor.

What is the typical pump station spacing for crude oil pipelines?

Typical spacing ranges from 30 to 80 miles on flat terrain depending on pipe diameter, flow rate, and MAOP. Hilly terrain with significant elevation changes can reduce spacing to 10-30 miles between stations.