ROGA – A New Method for Risk‐Based Hazard Analysis: Part 2 – Semi‐Quantitative Assessment and Implementation of the Hazard Analysis

Abstract

In the first part of this article, the deductive hazard analysis and its extension by a semi-quantitative risk assessment of sources of hazards were presented. This was done by using a calibrated risk graph. In this second part now, the semi-quantitative assessment of the dependability of safety measures is pointed out. The safety check is carried out by comparing the risk classes with dependability classes which are applied to both operational and technical measures. Now this paper describes the requirements for ROGA arising from the stipulations of the international standards like IEC 61508/11.