Controls & Protection
Emergency Shutdown System (ESD)
A protective system designed to bring defined parts of a facility to a safer state by initiating actions such as isolation, equipment shutdown or transfer interruption.
Why it matters
Operators and technicians must understand what initiates ESD actions, which equipment is affected and how the shutdown interacts with depressurization and fire-and-gas systems.
Related technical topics
Controls & Protection · Intermediate
DCS, SIS and Emergency Shutdown Systems
Understand the different roles of the distributed control system, safety instrumented system and emergency shutdown functions in an LNG facility.
Valves & Protection · Intermediate
Emergency Shutdown Valves (ESDVs)
Learn how ESDVs isolate inventories or process sections during defined shutdown scenarios and how valve fail position, actuator design and shutdown logic fit into the protective architecture.
Safety Systems · Intermediate
Fire & Gas Detection Systems in LNG Facilities
Study the detection and response architecture used to identify flammable gas, fire or cryogenic release hazards and initiate alarms or protective actions.