نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناسی ارشد، گروه مهندسی صنایع، دانشکدة مهندسی، دانشگاه کردستان، سنندج، ایران
2 استاد گروه مهندسی صنایع، دانشکدة مهندسی، دانشگاه کردستان، سنندج، ایران
3 پژوهشگر پسادکتری، گروه مهندسی صنایع، دانشکدة مهندسی، دانشگاه کردستان، سنندج، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study aims to design a sustainable decision-making model for optimizing the inventory routing of hazardous materials in the supply chain. Hazardous materials such as medical waste, fuel, and flammable chemicals play an essential role in industries and healthcare systems; however, due to their toxic and flammable nature, they pose serious threats to human health, public safety, and the environment. The importance of this issue becomes more evident when considering that even a single accident during the transportation of such materials can cause severe human, financial, and environmental damages. Therefore, it is crucial to develop integrated models that simultaneously address economic, safety, and environmental dimensions. A multi-objective mathematical model was developed in this research to optimize three key criteria: total cost, maximum accident risk, and environmental emissions. To enhance realism, demand uncertainty and transportation risk were modeled using a scenario-based approach, ensuring that the solutions remain feasible under different operating conditions. For solving the model, exact methods were applied to small-scale instances, while a hybrid algorithm based on NSGA-II combined with a local search procedure was designed and implemented for large-scale problems, ensuring both scalability and solution quality. Numerical results revealed that considering both risk and uncertainty in the decision-making process significantly reduces transportation hazards, improves environmental performance, and increases the overall sustainability of the supply chain. Sensitivity analysis further demonstrated that an increase in accident severity directly leads to higher network risk, forcing decision-makers to balance between costs and safety levels. Moreover, the proposed hybrid algorithm generated high-quality solutions within shorter computational times compared to exact approaches in large-scale cases. By integrating multi-objective modeling, scenario-based uncertainty, and metaheuristic optimization, this research provides an effective framework for the sustainable management of hazardous material transportation. The findings can assist supply chain managers and policymakers in making more informed decisions that simultaneously minimize costs, enhance safety, and protect environmental resources.
کلیدواژهها [English]