How to name SIF
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To compile an SIF list as a functional safety document. It facilitates the subsequent management of the safety instrumented system. For example, activities such as SIL verification also need to be carried out in accordance with the SIF number. How should numbering be done in a reasonable way? If it is based on interlock numbers, it isn’t very reasonable either. Because one interlock may contain several SIFs. Could those with experience share their views?
SIF is a function. First, classify by output, then by input, isolating them into separate functions. Based on causal diagrams.