February 2020

Environment and Safety

LOPA: A comprehensive analytical tool for deriving SIL targets and applicability review

Many industrial facilities, especially those in the chemical, oil and gas and petroleum industries, involve inherent risks in operations due to the processing of material that is hazardous in nature. It is necessary to precisely identify and analyze hazards, operability issues, associated risks and consequences.

Patel, H., Fluor

Many industrial facilities, especially those in the chemical, oil and gas and petroleum industries, involve inherent risks in operations due to the processing of material that is hazardous in nature. It is necessary to precisely identify and analyze hazards, operability issues, associated risks and consequences. Safety instrumented systems (SISs) are often used to reduce the risk associated with process or plant to acceptable or tolerable levels.1 The reliability of safety function(s) implemented through an SIS is determined by the magnitude of risk reduction and is expressed in terms of safety integrity level (SIL). The determination of the SIL is the process of assigning the risk reductio

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