Safety Critical Element Management Manual
Safety Critical Element Management Manual
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| Safety Critical Element Management Manual EP 2009-9009 Restricted 16 Figure 6: Hardware barriers and SCE groups Structural integrity Process containment Ignition control Detection systems Protection systems Shutdown systems Emergency response Life saving Escalating consequences SI Structures Subsea/Vessel Hull/GBS/ Foundation Structures SI Topside Structures SI Heavy lift cranes and mechanical handling equipment SI Bilge, ballast and cargo management systems • SI Road vehicles SI Mooring Systems SI Drilling Systems PC Pressure Vessels PC Heat Exchangers • PC Rotating Equipment PC Tanks PC Piping Systems PC Pipelines PC Relief System PC Operational Well Containment • PC Fired Heaters PC Gas Tight Floor Walls (Offshore only PC Tanker Loading Systems – Floating Production Storage Offtake (FPSO) Unit only (TANDEM PC Helicopter Refuelling Systems PC Well Intervention/Well Control Equipment IC001 Hazardous Area Ventilation IC002 Nonhazardous Area Ventilation IC003 Certified Electrical Equipment IC004 Cargo Tank Inert gas System IC005 Earth Bonding IC006 Fuel Gas Purge System IC007 Inert Gas Blanket System IC008 Miscellaneous Ignition Control Components IC009 Flare Tip Ignition Systems DS001 Fire and Gas Detection DS002 Security Systems DS003 Water in Condensate (gas dew point measurement PS Deluge Systems PS Fire and Explosion Protection PS Fire Water Pumps PS Firewater Ring Main and Other Distribution Systems PS Passive Fire Protection PS Gaseous Fire Protection Systems PS Fine Water Spray (FWS) Systems PS Sprinkler System PS Power Management System PS Fixed Foam Systems PS Sand Filters PS Chemical Injection Systems PS Navigation Aids PS Collision Avoidance Systems PS Metocean Data Gathering Systems SD Emergency Shutdown System • SD Depressurisation System SD High Integrity Pressure Protection Systems (HIPPS) • SD Operational Well isolation SD Pipeline Isolation Valves SD Process Emergency Shutdown Valves (ESDVs) • SD Subsea Isolation Valves (SSIVs) • SD Drilling Well Control Equipment SD Utility Air ER Temporary Refuge/Primary Muster Areas ER Escape and Evacuation Routes ER Emergency Escape Lighting ER Communication Systems ER Uninterruptible Power Supply (UPS ER Helicopter Facilities ER Emergency Power ER Drain systems LS Personal Survival Equipment (PSE) • LS Rescue Facilities LS Lifeboats TEMPSCs • LS Tertiary Means of Escape (Offshore only) SCE groups Hardware barriers It is not necessary for all eight barriers to fail to lead to a major incident. For example, failure of a single barrier such as structural integrity or process containment may lead directly to a major incident. |