Water asset replacement maintenance prioritization procedure based on criticality and optimisation of energy consumption

The paper describes an efficient process for developing, optimizing, and managing replacement/maintenance programs for assets based on risk management, cost-benefit analysis, energy management and environmental impact principles. The best decision on whether to maintain or replace an asset can only be reached by evaluating the assets in the broadest possible terms, looking at the performance of associated assets, their function, lifespan and cost of replacement. In order to fully incorporate sustainability into the decision-making process, ADDC evaluates the on-going energy efficiency performance of an asset as well as the immediate environmental impact of maintenance or the replacement of an asset. Accordingly ADDC has developed asset effective maintenance/replacement process based on criticality analysis (risk, cost-benefit and energy management principles), for overall asset's life cycle management. ADDC developed energy efficiency management to reduce air pollution and GHG emissions. The paper provides a summary of various maintenance techniques used for assets and how these techniques can be applied within a maintenance framework referred to as reliability centered maintenance (RCM). With the application of RCM principles, maintenance is evaluated and applied in a rational manner that provides most value to the Assets Owner/Operator.