Use of multi-criteria decision methods for prioritizing the rehabilitation of sewer sections

Abstract

In the contents of the paper, the author presents the necessity of prioritizing the actions related to sewer section rehabilitation in an urban environment. Dealing with aging sewer systems is not an easy task for water and sanitation companies and they must plan their actions in such a way as to have minimal disruption of their services. A first step in that direction is to plan and execute survey actions in the sewer system, especially by means of CCTV inspection, and to assess the real technical status of the sewer section. The second step would be to plan and execute repair and rehabilitation actions for those sewer sections. But which one should be repaired or rehabilitated first? This paper offers one possible solution.