BOG Compressor
medium
Boil-Off Gas compressors for LNG carriers
Known Models (3)
Atlas Copco Atlas Copco BOG Compressor
variable
· LNG / LPG / Gas Cargo
· reciprocating
type: reciprocating
Common Failures:
- • Valve failure
- • Piston ring wear
- • Cooling system blockage
Service: Process gas division product. Annual valve inspection.
Spares: Atlas Copco: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
Burckhardt Burckhardt BOG Compressor Laby
variable
· LNG / LPG / Gas Cargo
· labyrinth_piston
type: labyrinth_piston
oil_free: True
Common Failures:
- • Piston ring wear
- • Valve failure
- • Labyrinth seal clearance increase
Service: Labyrinth-piston design — oil-free compression. 8000-hour overhaul.
Spares: Burckhardt: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
Cryostar Cryostar BOG Compressor
variable
· LNG / LPG / Gas Cargo
· centrifugal
type: centrifugal
cryogenic: True
Common Failures:
- • Magnetic bearing failure
- • Impeller erosion
- • Seal gas system failure
- • VFD malfunction
Service: Cryogenic centrifugal compressor. Magnetic bearings require specialist service.
Spares: Cryostar: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.