IEC 61508 Safety Domain

Release 2019 R3 adds a new safety domain profile for industrial applications according to IEC 61508. During creation of a project, this new project type can be selected and it includes a consistent SIL level management from PHA to requirements and system design as well as FME(D)A with Safe Failure Fraction (SFF) and Diagnostic Coverage (DC) computations. See details of those features below.

Safety Integrity Level (SIL)

The Safety Integrity Level (SIL) is supported for SysML, defining risk reduction requirements according to IEC 61508. In conjunction with a customized risk graph for the Hazard Analysis, this will allow you a consistent management of risk levels, performance levels, and integrity requirements according to a wide variety of industrial standards such as ISO 13849, ISO 25119, IEC 62061, EN 5012x, and many more.

FMEDA

IEC 61508 projects provide now a dedicated FMEDA worksheet to calculate the Safe Failure Fraction (SFF) and Diagnostic Coverage (DC) for a system. In addition, the SFF and DC are also available in ISO 26262 SPF/LF analysis worksheets to support e.g. projects that have automotive and IEC 61508 requirements.