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The Safety Integrity Level (SIL) of a Safety Instrumented Function (SIF) depends on failures of the various components involved in performing the function. These failures depend on various factors and can be random hardware failures and/or systematic failures. Failure of a SIF need not necessarily result in a hazardous event when there are other layers of protection. Hence the residual risk probability...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.