Development of an Integrated Risk-Informed Capital Renewal Optimization System for Municipal Wastewater Assets

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An infrastructure asset management system consists of four common modules: a) asset inventory; b) inspectionand condition assessment; c) performance deterioration and asset valuation; and d) asset prioritization andoptimization. The purpose of this NSERC Engage project is to help the industrial partner, InfrastructureSolutioins Inc. (ISI) to address two particular technical challenges in the development of a risk-informedcapital renewal planning system for municipal wastewater assets, namely, 1) deterioration modeling forwastewater sewers; and 2) an integrated risk-based capital renewal optimization system that considersinspection and condition assessment tools, maintenance and rehabilitation technologies, hierarchicaldecision-making structure, network effects, lifecycle cost analysis, and risk analysis. As an "accountineering"company, ISI is dedicated to developing the most sophisticated asset management prioritization andoptimization software and assisting municipal governments in managing the lifecycle of their infrastructureassets. This project represents a genuine engaging project in which the industrial expert and academia workclosely to provide a cutting-edge solution for long-term capital renewal planning in local governments. Theproject uses the large sewer condition database ISI have developed to develop a unified stochastic deteriorationmodeling approach for the prediction of sewer condition, remaining service life, and system reliability. In thedevelopment of the optimization system, the project treats risk, level of service, and lifecycle cost as a holistictrinity of infrastructure asset management, which differentiates this project from many other similar studies.The research outcomes will be directly implemented and integrated into the company's asset managementsystem. The developed software will help cash-strapped Canadian municipalities to achieve practical,implementable and defensible capital plans based on the municipality's budget, and service level objectives. Itwill also help communities to gain control over their infrastructure deficit, and improve prospects for municipalself-sufficiency by spending maintenance dollars more wisely.