THE STUDY OF RISK MANAGEMENT OF WATER AND WASTEWATER FACILITIES USING COMBINED METHOD AHP AND RAMCAP

Water and wastewater facilities are the key assets and infrastructure of any country, and any service stop and damage to the infrastructure may have social and political problems and endanger the health and life of humans. Therefore, the study of asset valuation of these facilities against potential attacks is necessary to enable decision-makers to reduce potential risks. In the present study, the proposed combination of RAMCAP and Analytical Hierarchy Process (AHP) analysis of the total water and sewage infrastructure in Tehran based on the value of the assets and riskiness was investigated. We used a pairwise matrix method by receiving 42 expert opinions. To analyze the data, the AHP was used by applying RAMCAP guide. Moreover, to keep the paired comparison of each respondent reasonable, the inconsistency ratio was determined. The results of this study indicated that, because of the importance of assets, the Latian Dam with asset value 1 has the highest asset value and, then, Lar Dam with a value of 0.6920 in the second position and the distribution network of water and reservoirs with asset values of 0.0312 and 0.0310 based on three criteria of economic value, functional value, and uniqueness is in the last position of this value, respectively. Furthermore, 12 different threats were evaluated. In the case of chemical, microbial, and nuclear attacks, a number close to 1 is most likely to occur. The greatest vulnerability of the chemical threat, microbial and nuclear attacks belongs to the Latian dam with a vulnerability of 0.9310 and the Amir Kabir dam with 0.8353. Taleghan Dam with a vulnerability of 0.6304 was in the third position.