This case study focuses on the overfill prevention and protection of the 12 gasoline (petrol and diesel), kerosene, aviation fuel (Jet A1), derv and gas oil storage tanks at an imaginary Oil Terminal. This includes the tank level instrumentation, information display systems, alarms and high level trip system and the operation of these systems.
The study covers the risk assessment (using Layer Of Protection Analysis (LOPA) and an Event Tree) of the existing overfill prevention and protection, the Safety Integrity Level (SIL) requirements and the SIL achieved for the high level trip.
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