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Pneumatic Device Emissions

Methane · High/low/zero-bleed · Conversion ROI

Device Inventory

High-bleed (≥6 scf/h)

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Intermittent-bleed

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Low-bleed (<6 scf/h)

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Zero-bleed (electric/IA)

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Conversion Plan

Convert high-bleed to

Convert intermittent to

CAPEX per unit

$

Gas & Climate

Gas CH₄ %

%

Gas price

$/mscf

GWP CH₄

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📚 Learn the Theory

Pneumatic device emissions: high-bleed vs low-bleed vs zero-bleed conversion economics per EPA Subpart W §98.233 and OOOOa/b requirements.

Read Engineering Guide →

Engineering Basis

EPA Subpart W §98.233 emission factors (scf/h): high 28.6, intermittent 13.5, low 1.39, zero 0.
EPA OOOOa requires zero-bleed for new sources.
Mass: 1 mscf NG ≈ 19.2 kg, then × CH₄ fraction (default 95%).
Standards: EPA OOOOa, EPA Subpart W §98.233, OGMP 2.0, API Compendium.