Determining the necessary safety layers in a LOPA study involves identifying the hazard and initiating event, then assessing the associated risks. Existing protection layers, such as physical barriers, control systems, and procedural safeguards, are evaluated for effectiveness and reliability. If these layers do not reduce risk enough, additional layers—such as redundant systems or enhanced procedures—are added. Each layer's reliability is assessed, ensuring they are independent and effective. The total risk reduction is then calculated to ensure it meets safety targets. Finally, safety systems may be assigned a Safety Integrity Level (SIL), and continuous monitoring is implemented to maintain protection. The goal is to ensure all risks are reduced to an acceptable level. If you want to know more about it, then join with us.
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