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Safe Failure Fraction (SFF) Calculation

Updated 18 May 2026

Contents & prerequisites

Prerequisites

Diagnostic Coverage (DC) Calculation

Unlocks

PFD (Probability of Failure on Demand)

Article in preparation

Safe Failure Fraction (SFF) Calculation

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Learning

PreviousSIS Hardware: Triconex, Hima, PILZ, S7-F NextSafety Function Specification (SFS) Document

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