Issuing body
API
Latest edition
5th Edition (2008, R2017)
Region
USA, Global
Equipment items
1
Scope
Lube oil, seal oil, and control oil systems for special-purpose machinery.
Key requirements (8)
- Lubrication, shaft-sealing and oil-control systems for special-purpose machinery.
- Chapter 1 General; Chapter 2 General-purpose; Chapter 3 Special-purpose; Chapter 4 Self-acting gas seals.
- Standard oil reservoir retention time: minimum 8 minutes at normal flow.
- Dual filters (5–10 µm) with continuous transfer valve.
- Twin pumps: main + standby; each 100% capacity; auto-start on low-pressure.
- Twin coolers (one operating, one standby) — continuous transfer valve.
- Console design: skid-mounted, integrated alarms and trips.
- Reservoir vapor extraction to avoid oil mist accumulation.
Related standards (2)
Applied to 1 equipment item
Rotating Equipment