6. Aggregation of hazardous phenomena
6.1 Principle
The purpose of aggregating probabilities is to answer the following fundamental question: "Is the multiplicity of equipment of the same kind a factor that increases risk?"
For example, it seems legitimate to ask whether the probability of observing a capacity BLEVE on a site with four overhead tanks is four times "greater" than on a site with just one tank.
There is no regulatory text specifying the nature of authorized approvals.
The aggregations most often performed in ESDs concern :
dangerous phenomena of the same nature ;
the effects of hazardous phenomena located in the same...
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Aggregation of hazardous phenomena
Analysis of domino effects
Bibliography
- (1) - Rapport INERIS - Synthèse des exclusions des accidents majeurs, phénomènes dangereux et de leurs causes, des Plans Particuliers d'Intervention, de la démarche de Mesure de Maîtrise des Risques et des Plans de Prévention des Risques Technologiques - Rapport DRA-09-1 03142-12236 A (07/10/2009).
- ...
Digital media
ARIA – Technological accident database.
French Ministry of Ecology, Energy, Sustainable Development and Town and Country Planning (MEEDDAT)
Regulations
Arrêté ministériel du 29 septembre 2005 relatif à l'évaluation et à la prise en compte de la probabilité d'occurrence, de la cinétique et de l'intensité des effets et de la gravité des conséquences des accidents potentiels dans les études de dangers des IC soumises à autorisation.
Circular dated May 10, 2010 summarizing the methodological rules applicable to hazard studies, risk reduction at source...
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