Safety Critical Element Management Manual


SCE group SD006SCE group title



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SCE group SD006
SCE group title Process Emergency Shutdown Valves (ESDVs)
Process ESDVs to automatically isolate a flammable or hazardous inventory in a Facility, either onshore or offshore.
To shutdown the process in response to a hazardous situation and also to prevent a major incident.
At item level, i.e. per valve
SCE group SD005
SCE group title Pipeline Isolation Valves
Pipeline Isolation Valves to isolate a flammable or harmful pipeline inventory from the onshore or offshore
Facilities or public areas.
To reduce the inventory released in the event of a Major Hazard release.
At item level, i.e. per isolation valve Pipeline ESD valves, plant isolation or safety valves, pipeline block valves, pipeline check or non-return valves Pneumatic/hydraulic/electrical actuators and control circuits



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