Guidelines for quantitative risk analysis of facilities handling hazardous substances

This report is written by Lloyd’s Register on behalf of The Norwegian Directorate for Civil Protection (DSB). The content of this report is intended to represent guidance for calculations of unbiased 3D risk contours. The guidance is expected to represent a basis for the imminent DSB regulation for risk calculations of onshore plants handling hazardous substances.


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The guidelines introduce some new concepts and principles, which may be applicable or subject to discussions in other countries, in particular countries comprised by the framework of the Seveso directive and the UNECE Industrial Accidents Convention. Thus, DSB has considered it appropriate to translate the guidelines in English.

Read this report in Norwegian: