Safety Integrity Level (SIL) is a quantified metric that defines the required level of reliability and risk reduction for a Safety Instrumented System (SIS). Rather than just hoping a safety mechanism works, SIL mathematically dictates the exact probability that a safety loop will successfully intervene and shut down a process when a critical failure occurs.
Target Allocation
Using methodologies like Layer of Protection Analysis to assess hazard severity and determine exactly how much risk reduction is required
System Engineering
Designing the safety loops with the necessary redundancy to meet the strict Probability of Failure on Demand for the SIL level
Lifecycle Verification
Continuously documenting and validating that the installed instruments maintain their assigned safety rating through strict proof-testing intervals
The Standard Behind Critical Protection


