SIL – Unit of Measurement for Risk Reduction

Related Vendors

DÜPERTHAL Sicherheitstechnik GmbH & Co. KG

Glatt Ingenieurtechnik GmbH

Anton Paar GmbH

Pepperl+Fuchs SE

Assessing functional safety

Standards for functional safety require the verification or validation of all activities and results according to the four-eyes principle. This affects the complete safety life cycle of protective equipment [Fig. 5, left side]. Both the risk analysis (SIL requirement) and the process for implementing the risk-reducing measure must be assessed accordingly. It must be explicitly emphasized at this point that the complete safety life cycle, including compulsory documentation, must be processed in the FSM system already mentioned. The FSM system is not only used to avoid systematic faults as described under point 2, but also to ensure that all activities and results (documents, hardware, software) which affect risk reduction can be traced and audited. The FSM system is therefore a central component of functional safety and indispensable in fulfilling a SIL requirement.

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