A two stage optimization model for emergency material reserve layout planning under uncertainty in response to environmental accidents.
In the emergency management relevant to pollution accidents, efficiency emergency rescues can be deeply influenced by a reasonable assignment of the available emergency materials to the related risk sources. In this study, a two stage optimization framework is developed for emergency material reserve layout planning under uncertainty to identify material warehouse locations and emergency material reserve schemes in pre accident phase coping with potential environmental accidents. This framework is based on an integration of Hierarchical clustering analysis improved center of gravity (HCA ICG) model and material warehouse location emergency material allocation (MWL EMA) model. First, decision alternatives are generated using HCA ICG to identify newly built emergency material warehouses for risk sources which cannot be satisfied by existing ones with a time effective manner. Second, emergency material reserve planning is obtained using MWL EMA to make emergency materials be prepared in advance with a cost effective manner. The optimization framework is then applied to emergency management system planning in Jiangsu province, China. The results demonstrate that the developed framework not only could facilitate material warehouse selection but also effectively provide emergency material for emergency operations in a quick response.
Journal of hazardous materials