Abstract
Research has shown that some water utilities still have a strong preference for using “tried and true” open cut replacement techniques when rehabilitating water pipes in urban areas. Significant cost savings and reductions in carbon emissions can, however, be realised through the implementation of a strategy that incorporates trenchless rehabilitation techniques. This paper investigates the carbon emissions and financial implications of pipe rehabilitation strategies and analyses policies for three water utilities in Australia over a long-term planning horizon (30 years). When monetized, the carbon emissions from pipe rehabilitation are shown to be 0.1–0.2 % of the total revenue of a utility. However, given that direct and intangible cost reductions can be realised and there is a need to mitigate carbon emissions wherever possible, it is concluded that utilities should develop the capacity to use trenchless techniques in urban areas.
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Acknowledgments
The authors would like to acknowledge the contributions of Mr. Bradley Lane (CSIRO) and Dr Scott Gould (CSIRO) in assisting in related research. The submitted manuscript has been made possible through funding from the Water Research Foundation (Water RF) and CSIRO. Some of the information contained herein is based upon Intellectual Property that is jointly owned by CSIRO and Water RF. Water RF and CSIRO retains its right to publish or produce the Jointly Owned Intellectual Property in part or in its entirety. The comments and views detailed in this paper may not necessarily reflect the views of the Water RF, CSIRO or any of their officers, directors, affiliates or agent.
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Beale, D.J., Marlow, D.R. & Cook, S. Estimating the Cost and Carbon Impact of a Long Term Water Main Rehabilitation Strategy. Water Resour Manage 27, 3899–3910 (2013). https://doi.org/10.1007/s11269-013-0386-0
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DOI: https://doi.org/10.1007/s11269-013-0386-0