Land use planning, risk control and emergency planning are matters of deep examination and strong decisions by public authorities who have to manage problems posed by the concentration of many industrial activities where dangerous substances are processed, especially if these establishments are located close to residential areas. The quantitative area risk assessment (QARA) is an indispensable knowledge tool to address right choices of prevention and protection. In the Ravenna area of Italy a large complex of chemical and petrochemical plants is located near a densely populated town and risks connected with transport, storage and processing of large amount of dangerous substances were evaluated and decisions assumed by administrations in order to guarantee a high degree of safety to citizens. That is the final aim of a pioneer Project, the ARIPAR project, whose first phase was concluded in 1992. The control of the area has continued during the years. The aim of this paper is to summarise some results of the updating of the quantitative risk analysis of the Ravenna area, to put in evidence the effects of both the industrial dynamics and of structural interventions suggested by the studies and realized by companies and authorities, through modifications of plant operations and territorial infrastructures. After a short description of the territory and of its vulnerability (meteorological data, population distribution, centres of aggregated population – hospital, schools, commercial centres,....), the attention is paid to: 1. data collection of industrial area (transportation included); 2. risk analysis of each risk source (plants and transport); 3. comparative analysis of risk measures - individual and societal risk – obtained from the large amount of calculations performed. In particular, the risk measures are discussed by putting in evidence modifications caused by new road layout, decommissioning of LPG sphere storage and building of new buried storage, the aim being to show how and in which way these technological changes can mitigate major accident risks.

Assessment and management of major accident risks connected with industrialised areas: the case of Ravenna (Italy)

SPADONI, GIGLIOLA;
2005

Abstract

Land use planning, risk control and emergency planning are matters of deep examination and strong decisions by public authorities who have to manage problems posed by the concentration of many industrial activities where dangerous substances are processed, especially if these establishments are located close to residential areas. The quantitative area risk assessment (QARA) is an indispensable knowledge tool to address right choices of prevention and protection. In the Ravenna area of Italy a large complex of chemical and petrochemical plants is located near a densely populated town and risks connected with transport, storage and processing of large amount of dangerous substances were evaluated and decisions assumed by administrations in order to guarantee a high degree of safety to citizens. That is the final aim of a pioneer Project, the ARIPAR project, whose first phase was concluded in 1992. The control of the area has continued during the years. The aim of this paper is to summarise some results of the updating of the quantitative risk analysis of the Ravenna area, to put in evidence the effects of both the industrial dynamics and of structural interventions suggested by the studies and realized by companies and authorities, through modifications of plant operations and territorial infrastructures. After a short description of the territory and of its vulnerability (meteorological data, population distribution, centres of aggregated population – hospital, schools, commercial centres,....), the attention is paid to: 1. data collection of industrial area (transportation included); 2. risk analysis of each risk source (plants and transport); 3. comparative analysis of risk measures - individual and societal risk – obtained from the large amount of calculations performed. In particular, the risk measures are discussed by putting in evidence modifications caused by new road layout, decommissioning of LPG sphere storage and building of new buried storage, the aim being to show how and in which way these technological changes can mitigate major accident risks.
2005
proceedings of the Fifth annula IIASA -DPRI Forum
G. Spadoni; D.Egidi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/31385
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