LNG Marine Loading Arms and Transfer Systems
Understand the mechanical, hydraulic and shutdown functions of LNG loading arms used for liquid and vapor transfer between terminal and vessel.
System context
Ship-shore transfer
Technical topic pages show the knowledge scope behind LNG University learning. Course, assessment and credential availability depends on the applicable program.
Relevant roles
Marine operators · Jetty operators · Maintenance technicians · Process engineers
Prerequisites
LNG transfer fundamentals · ESD fundamentals
Knowledge level
Intermediate technical coverage with system and operational context.
Learning outcomes
What this topic is intended to help you understand
- Identify major loading-arm components.
- Explain normal operating envelope and emergency release concepts.
- Relate arm position monitoring to ship-shore ESD coordination.
Technical scope
Equipment, concepts and terminology
- Swivel joints
- Articulated arms
- Hydraulic power unit
- Position monitoring
- Quick connect/disconnect systems
- Emergency release systems
- Liquid and vapor arms
Operating context
How the topic connects to plant operation
- Connection and disconnection concepts
- Envelope monitoring
- Transfer-rate changes
- Vapor return coordination
Safeguards and controls
Protection and risk-control context
- ERS/ERC systems
- Ship-shore ESD link
- Drip and spill control
- Movement limits
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
- Jetty P&ID
- Loading-arm OEM manual
- Marine operating procedure
- ESD cause & effect chart