Inspection
Work Planning
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A discrete level used to specify the required risk reduction performance of a Safety Instrumented Function.
Safety Integrity Level (SIL) is a discrete performance level that specifies the required risk reduction capability of a Safety Instrumented Function based on its probability of failure on demand or dangerous failure rate. Safety Integrity Levels are assigned through risk assessment and determine the design, implementation and verification requirements necessary to achieve functional safety objectives.
Safety Integrity Levels define the performance requirements necessary for Safety Instrumented Functions to achieve specified levels of risk reduction.
Safety Integrity Levels are defined by the IEC 61508 and IEC 61511 functional safety standards and range from SIL 1 to SIL 4, with higher SIL levels requiring progressively greater risk reduction and integrity.
A Safety Integrity Level specifies the required performance of a Safety Instrumented Function, whereas a Safety Instrumented System is the engineered system that implements those functions.
Process Safety; Functional Safety; Risk Management.
Oil and gas.; Petrochemical.; Chemical processing.; Power generation.; Manufacturing.
IEC 61508; IEC 61511
VisualAIM connects glossary concepts to the asset records, inspection histories, and workflows they describe.
