Burn, Davis, DeSilva, Marksjo, Tucker, Geehman
Rehabilitation # 2001 Munich
To allow long-term strategies to be implemented for the replacement or refurbishment of water pipelines, a planning model called the Pipeline Asset and Risk Management System (PARMS) has been developed. This model, although based upon life cycle costing methodologies has been designed to incorporate whole of life costing and life cycle analysis methodologies as data on externality and environmental costs becomes available. Two factors are critical to allow planning models such as PARMS to work - adequate cost data and accurate lifetime models for the individual components of the water reticulation system. This paper discusses the application of the PARMS planning model to allow selection of pipeline replacement or repair, and the influences that a range of decisions can have on a water authority’s capital and operational expenditure. It analyses the cost data requirements necessary for these models, and the methods needed to allow the development of deterministic and statistical models to predict failure for plastic and other pipeline materials.
