Issuing body
API
Latest edition
8th Edition (2008, R2021)
Region
USA, Global
Equipment items
1
Scope
Sizing, design and rating of oil & gas separators (2-phase, 3-phase).
Key requirements (8)
- Specification for oil and gas separators (2-phase, 3-phase).
- Sizing methods: settling theory + experience factors.
- Liquid retention time: typically 1–3 minutes for 2-phase; 5+ for 3-phase.
- Mist eliminator: wire mesh ≥ 6" thick; design velocity ≤ 0.1·(ρL−ρV)/ρV)^0.5 m/s.
- Vapor velocity: typically ≤ 0.107·(ρL−ρV)/ρV)^0.5 m/s through mist eliminator.
- L/D ratio: 3–5 typical for horizontal; 3–5 for vertical.
- Inlet diverter, weir/baffle plate for liquid-liquid separation.
- Companion to API RP 14C for safety system integration.
Related standards (1)
Applied to 1 equipment item
Pressure Vessels & Reactors