Quantitative Safety Integrity Level Assessment for Safety-Related Software  
Author Shinji Inoue


Co-Author(s) Takaji Fujiwara; Shigeru Yamada


Abstract We discuss quantitative software safety assessment based on the safety integrity level (SIL) of IEC 61508, which is the international standard for the functional safety of electrical, electronic and/or programmable electronic (E/E/PE) safety-related systems. On the safety assessment for the E/E/PE safety-related systems, SIL is widely applied as a graded measure representing the safety integrity of E/E/PE safety-related systems. We discuss stochastic modeling for conducting SIL-based safety assessment for the software of E/E/PE safety-related systems by applying the notion of software reliability modeling and assessment method. And we show numerical examples for explainning how to use our approaches.


Keywords Functional safety, Safety-related systems, IEC 61508, Safety integrity level, Software reliability model
    Article #:  RQD26-97

Proceedings of 26th ISSAT International Conference on Reliability & Quality in Design
Virtual Event

August 5-7, 2021