Information model for functional safety

Sub-models of the administrative shell

Abstract

This article demonstrates how digital information models make functional safety in the process industry more efficient throughout the lifecycle. Building on the limitations of document-based approaches, the role/type/instance model, AAS sub-models and the IEC Common Data Dictionary are
described as building blocks. Standards such as DEXPI, NAMUR NE 192, APOS and IDTA are combined to form a harmonised model for SIF, SIS, SIS devices and EUC. It
structures safety-related data in an interoperable and machine-readable manner and supports digital twins as well as automated processes in engineering, operation, testing and change management.