Improving the operation of a surface water intake with exceeded redundant capacity using reliability analysis and life cycle costing

Abstract

Integrated procedures of analysis have been presented combining both reliability and economical aspects of operation of a water supply system (WSS). The method presented is a practical application of the reliability analysis and life-cycle costing which is a part of a decision support system (DSS) for WSS. It focuses on undisturbed operation of systems with exceeded redundant capacity minding system's reliable and lower possible operational costs. The proposed analytical approach is shown on the example of the surface water intake which is the first subsystem of WSS influencing operation of a whole system. As a part of the study, reliability and economic assessments of various variants of future operation of water intake have been carried out as a basis for choosing most advantageous solution. The authors indicate how exceeded redundant capacity affects applied maintenance method of the system. All calculations of the reliability indicators are based on operating data contained in exploitation logs (2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012). The costs have been estimated based on the obtained financial documentation.

Forecasting Daily Water Consumption: a Case Study in Torun, Poland

“…In consequence, the hydraulic conditions in the water distribution system have changed and this is a serious threat to water quality which could change seasonally [27]. The application of accurate forecasting models allows the optimization of the water distribution process, assuring its appropriate quality whilst minimizing the occurrence of failures and risk [28] as well as increasing the reliability of the whole water supply system (from water intakes to households) [29,30].…”