Engineering Documents
Process Flow Diagram (PFD)
A system-level engineering drawing showing major equipment, principal process streams and key operating information.
Why it matters
PFDs are the fastest way to understand the major LNG process path before moving into detailed piping and instrumentation.
Related technical topics
Engineering Drawings · Foundational
Process Flow Diagrams (PFDs) for LNG Facilities
Learn to read an LNG process at system level by following major equipment, streams, operating conditions and material or energy flows on a PFD.
Regasification · Foundational
LNG Regasification Process
Follow LNG from storage through pumping, BOG recovery, vaporization, metering and pipeline sendout.
Liquefaction · Intermediate
LNG Liquefaction and Refrigeration Systems
Understand how refrigeration cycles progressively remove heat from treated natural gas until it becomes LNG, and how compressors, refrigerants and cryogenic heat exchangers interact.