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Reliability-Based Maintenance Management Methodology to Minimise Life Cycle Cost of Water Supply Networks
Abstract:With a large percentage of countries’ total infrastructure expenditure attributed to water network maintenance, it is essential to optimise maintenance strategies to rehabilitate or replace underground pipes before failure occurs. The aim of this paper is to provide water utility managers with a maintenance management approach for underground water pipes, subject to external loading and material corrosion, to give the lowest life cycle cost over a predetermined time period. This reliability-based maintenance management methodology details the optimal years for intervention, the ideal number of maintenance activities to perform before replacement and specifies feasible renewal options and intervention prioritisation to minimise the life cycle cost. The study was then extended to include feasible renewal methods by determining the structural condition index and potential for soil loss, then obtaining the failure impact rating to assist in prioritising pipe replacement. A case study on optimisation of maintenance plans for the Melbourne water pipe network is considered in this paper to evaluate the practicality of the proposed methodology. The results confirm that the suggested methodology can provide water utility managers with a reliable systematic approach to determining optimum maintenance plans for pipe networks.
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 Australian infrastructure statistics—Yearbook 2014 and Key Australian infrastructure statistics booklet
 AWWA 2001, Dawn of the Replacement Era: Reinvesting in Drinking Water Infrastructure, American Water Works Association: Denver, CO.
 AWWA 2012, Buried No Longer: Confronting America’s Water Infrastructure Challenge, 2012, American Water Works Association: Denver, CO.
 WSAA (2010). ‘Technical report’, Water Service Association of Australia (WSAA). Melbourne.
 Tee KF, Li CQ and Mahmoodian M. 2011. Prediction of time-variant probability of failure for concrete pipes. 12th International Conference on Durability of Building Materials and Components, Porto, Portugal.
 Australian Standards, 1998, AS2566.1: Buried flexible pipelines, Standards Australia, Sydney.
 Baecher GB and Christian JT. 2003. ‘Reliability and statistics in geotechnical engineering.’ Wiley publications, New York, USA.
 Li, CQ & Mahmoodian M 2013. ‘Risk based service life prediction of underground cast iron pipes subjected to corrosion’. Reliability Engineering & System Safety vol .199, pp. 102-108.
 Afshar MH & Marino MA 2005. ‘A convergent genetic algorithm for pipe network optimisation’, Science Iranica, vol. 12, no. 4, pp. 392 – 401.
 Davis, P, Sullivan, E, Marlow, D, Marney, D, 2012. ‘A selection framework for infrastructure condition monitoring technologies in water and wastewater networks’
 Rostum, J 2000. ‘Statistical modelling of pipe failures in water networks’. PhD thesis, the faculty of Civil Engineering, the Norwegian University of science and technology, Norway.
 Tee, KF, Khan, LR, Chen, HP and Alani, AM, 2012. ‘Reliability based life cycle cost optimisation for underground pipeline networks,’ Tunnelling and Underground Upace Technology, vol. 43, pp. 32-40.
 Kleiner, Y & Rajani, B 2001. ‘Comprehensive review of structural deterioration of water mains: statistical models." Urban water vol.3, no. 3, pp.131-150.
 Fitzgerald, JH 1960. ‘Corrosion as a primary cause of cast iron main breaks’. Journal of American Water Works Association, vol. 60 no. 8, pp. 882–897.
 Rajani, B & Tesfamariam, S 2004. ‘Uncoupled axial, flexural, and circumferential pipe-soil interaction analyses of partially supported jointed water mains’, Canadian Geotechnical Journal, vol. 41, pp. 997-1010.
 Kettler AJ & Goulter IC. 1985. ‘An analysis of pipe breakage in urban water distribution networks’, Canadian Journal of Civil Engineering, vol. 12 no. 2, pp. 286 – 293.
 Rajani, B, and McDonald, S, 1995. ‘Water Mains Break Data on Different Pipe Materials for 1992 and 1993, Report No. A-7019.1’, Natl. Res. Council of Canada, Ottawa.
 Makar, JM 1999. ‘Failure analysis for grey cast-iron water pipes’ 1999 AWWA Distribution System Symp, American Water Works Association. Denver.
 Rastad, C 1995. ‘Nordic experiences with water pipeline systems’. In: 3rd International Conference, Sector C- Pipe materials and handling. CEOCOR Praha
 O’Day, K 1989. ‘External corrosion in distribution systems’, Journal of Water Works Association (AWWA) vol. 81 no. 10,pp. 45–52.
 Kleiner, Y, Hunaidi, O & Krys, D 2005. ‘Failures in Gray Cast Iron Distribution Pipes’. National Research Council Canada, Institute for Research in Construction.
 Karaa, FA, & Marks, DH 1990. ‘Performance of water distribution networks: Integrated approach’. ASCE Journal of Performance of Constructed Facilities vol. 4 no. 1, pp 51–67.
 Andreou, S 1986. ‘Predictive models for pipe break failures and their implications on maintenance planning strategies for deteriorating water distribution systems’. PhD thesis. MIT.
 Tesfamariam, S, Rajani, B & Sadiq, R 2006. ‘Possibilistic approach for consideration of uncertainties to estimate structural capacity of ageing cast iron water mains’. Canadian Journal of Civil Engineering. vol. 37, no. 2, ppp. 167-183.
 P. Rajeev, Kodikara, J, Robert, D, Zeman, P & Rajani, B 2014. ‘Factors contributing to large diameter water pipe failure as evident from failure inspection’, Water Asset Management International, vol. 10, no. 3, pp. 9-14.
 Skipworth, P, Engelhardt, M, Cashman, A, Savic, A, Saul, A & G. Walters 2002. ‘Whole life costing for water distribution network management’. Thomas Telford Publishing. London.
 Goulter, I.C. and Kazemi, A. 1988 ‘Spatial and temporal groupings of water main pipe breakage in Winnipeg’, Canadian Journal of Civil Engineering, vol. 15 no. 1, pp 91-97.
 Butler, M & West, J 1987. ‘Leakage prevention and system renewal’. In: Pipeline Management Seminar, Pipeline Industries Guild. U.K.
 Sun, Y, Ma, L, Robinson, W, Purser, M, Mathew, A, and Fidge, C, 2012 ‘Renewal decision support for linear assets,’ In Engineering Asset Management and Infrastructure Sustainability, pp. 885-899. Springer London.
 Pentair Design Manual, 2014. ‘Steel Pipeline Solutions,’ Pentair Water Solutions, Australia pipelines using limited data, OzWater, Perth, Australia.
 Tee, KF and Khan, LR 2012 ‘Risk-cost optimization and reliability analysis of underground pipelines.’ In Proc. of the 6th International ASRANet Conference, London, UK, July, pp. 2-4.
 Ahammed, M, and Melchers, RE, 1997. ‘Probabilistic analysis of underground pipelines subject to combined stresses and corrosion,’ Engineering structures vol.19, no. 12, pp. 988-994.
 Sadiq, R, Rajani, B and Kleiner Y, 2004. ‘Probabilistic risk analysis of corrosion associated failures in cast iron water mains,’ Reliability engineering and system safety, vol. 86, no. 1, pp. 1-10.
 Kucera, V, and Mattsson, E, 1987 'Atmospheric corrosion', Corrosion
 Chen, W, and Lui, E, 2005 eds. Handbook of structural engineering. Crc Press.
 Melchers, R, 1987. Structural reliability. Horwood.
 Babu S, Srinivasa M and Rao R, 2006. ‘Reliability analysis of deflection of buried flexible pipes.’ Journal of transportation engineering vol.132, no. 10, pp.829-836.
 Li, F 2013, ‘Multi-criteria optimisation of group replacement schedules for distributed water pipeline assets’, PhD Thesis, Queensland University of Technology London, IWA Publishing.
 WRc (Water Research Centre), 2001. Sewerage rehabilitation manual. Vol. I, II, 4th edition, Wiltshire, United Kingdom.
 McDonald S & Zhao J 2001. ‘Condition assessment and rehabilitation of large sewer’, International proc., Conf. on infrastructure research, June 10 – 13, University of Waterloo, Waterloo, Canada, pp. 361 – 369.
 Standard Economic Values Guidelines, 2010. Australian Government, Version 3.
 Halfawy, MR, Dridi, L and Baker S, 2008. ‘Integrated decision support system for optimal renewal planning of networks,’ Journal of Computing in Civil Engineering, vol. 22, no.6, pp. 360 – 372.