LNG High-Pressure Sendout Pumps
Understand how high-pressure LNG pumps raise liquid pressure before vaporization and how their hydraulic operating envelope connects storage, recondenser and vaporizer systems.
System context
Regasification
Technical topic pages show the knowledge scope behind LNG University learning. Course, assessment and credential availability depends on the applicable program.
Relevant roles
Regasification operators · Control-room personnel · Mechanical technicians · Process engineers
Prerequisites
Pump fundamentals · Regasification process
Knowledge level
Intermediate technical coverage with system and operational context.
Learning outcomes
What this topic is intended to help you understand
- Trace the HP sendout pump within the LNG sendout process.
- Interpret pump differential pressure, flow and minimum-flow protection.
- Recognize common abnormal operating conditions and protective responses.
Technical scope
Equipment, concepts and terminology
- Multistage cryogenic pumps
- Suction conditions
- Differential head
- Minimum-flow recycle
- Discharge check valves
- Driver and electrical protection
- Pump curves
Operating context
How the topic connects to plant operation
- Sequencing pumps to demand
- Monitoring suction pressure and flow
- Managing recirculation
- Recognizing degraded pump performance
Safeguards and controls
Protection and risk-control context
- Minimum-flow protection
- Low suction pressure
- High motor load
- Vibration or bearing protection where fitted
- ESD shutdown
Technical learning does not replace site procedures, OEM documentation, engineering calculations, permits, supervision or facility-specific authorization.
Engineering documents
Documents commonly connected to this subject
- Pump curve
- P&ID
- Operating envelope
- Trip matrix