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