Evaluating Maintenance Strategies of Service Companies' Physical Assets with a Green Approach Using the Fuzzy Hierarchical Analysis Method - Case Study: Water and Waste Water Company of Tehran Province

Population increment, industries growth and development in order to satisfy the increasing needs of human societies, on the one hand, and the risk of the destruction of non-renewable resources such as water, on the other hand, are irreparable results of disregarding the correlation between industry and the environment. In this research, the performance of the physical assets of water and sewage companies is monitored and the appropriate strategy for sustainable maintenance and repairs in these companies is selected. Also, maintenance and repairs and sustainable development data is gathered. Then by using Fuzzy Hierarchy method (Fuzzy AHP), among the strategies that have the most compatibility with sustainable maintenance and repair, the ranking is done. Finally, according to the results, the reactive strategy is determined as the most effective approach in sustainable maintenance and repairs of the physical assets of Tehran Province Water and Sewerage Company.