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There are multiple definitions for safety instrumented function (SIF), lending to confusion around just what a SIF is, and what it is not. Failure to identify true SIFs leads to less safety. Identifying things as SIFs that are not, leads to unnecessary cost, burden, and complexity. Click here to read The Safety Instrumented Function - An S-Word Worth Knowing to test your knowledge of the key properties of a SIF and your ability to distinguish between a SIF and an asset or operational protection function. Click here for the whitepaper Balancing Risk Assessments to Improve Safety Decisions to understand the important safety and cost-benefits associated with establishing a constant definition of risk when using hazard analysis, safety integrity level analysis, reliability-centered analysis, and risk-based inspection analysis. Click here for the whitepaper Process Safety Management Lessons Learned from a Petroleum Refinery Spent Caustic Tank Explosion to learn important safety management lessons.
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