LNG Stratification and Rollover
Study how LNG layers with different density and composition can form, evolve and potentially mix rapidly, producing increased boil-off gas generation.
System context
LNG storage
Technical topic pages show the knowledge scope behind LNG University learning. Course, assessment and credential availability depends on the applicable program.
Relevant roles
Terminal operators · Control-room personnel · Process engineers · HSE professionals
Prerequisites
LNG properties · LNG storage tanks
Knowledge level
Advanced technical coverage with system and operational context.
Learning outcomes
What this topic is intended to help you understand
- Explain the mechanisms that can create stratified LNG layers.
- Identify monitoring indicators used to detect developing instability.
- Describe the role of tank-management procedures and mixing strategies within site-specific engineering limits.
Technical scope
Equipment, concepts and terminology
- Density differences
- Composition differences
- Heat leak
- Weathering
- Layer evolution
- Temperature and density profiling
- Rapid mixing and vapor generation
Operating context
How the topic connects to plant operation
- Trend monitoring
- Receipt planning awareness
- Inventory management
- Escalation based on site procedures
Safeguards and controls
Protection and risk-control context
- Tank instrumentation
- BOG-capacity awareness
- Operating limits
- Site-specific rollover prevention strategy
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
- Tank operating procedure
- Density and composition records
- Temperature profile
- BOG trend data