Integrity Barrier
Safety and Environmental Critical Elements
Safety critical elements (SCEs) are parts of a plant, installation, or computer program that could cause or contribute to a major accident. They can also be parts that are designed to prevent or limit the effects of a major accident.
Here are some examples of SCEs:
Flammable gas detection
Toxic gas detection
Fire detection
Manual alarm call points
Emergency shutdown system (ESD)
Emergency blow-down system
Flare systems
Burn pits and incinerators
Pressure relief system
Firewater system
Structural Integrity
Foundation Structures
Surface Structures
Heavy Lift Cranes
Occupied Buildings
Process Containment
Pressure vessels
Heat Exchangers
Rotating Equipment
Tanks and Piping Systems
Bunding and Drainage
Tanker Loading
Ignition Control
Hazardous Area Ventilation
Non-Hazardous Area Ventilation
Certified Electrical Equipment
Tripping of non-certified Equipment
Inert Gas Systems
Earth Bonding
Hot surface management
Spark Arrestors and Flame and Flashback arrestors
Protection Systems
Passive and Active fire Protection Systems
Layout and segregation
Explosion Protection
Firewater Pumps
Detection Systems
Fire & Gas detection
Corrosion monitoring equipment
Flaring monitoring equipment
Shutdown Systems (Isolation and Blowdown)
ESD including IPF and HIPPS
Depressurisation
Equipment Isolation
Piping isolation
Valves
ESDV
Emergency response
Protection Systems as above
Escape and Evacuation Routes
Emergency/Escape Lighting
Communication Systems
UPS
Open Haz/Non-Haz Drains
Emergency Power
Medical Emergency response times
Spill kits
Lifesaving
Personal Safety Equipment
Tertiary means of Escape
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