RISK ANALYSIS FOR INTERMITTENT WATER SUPPLY SYSTEMS

Intermittent Water Supply systems are implemented commonly in some developing countries nowadays in order to minimize the water scarcity problems, unstable hydraulic conditions in the distribution systems, low pressure and high risk of water contamination are some of this strategy consequences. In this study, we developed Risk Analysis Methodology to handle with intermittent water supply systems in developing countries conditions, which include undesired events identification; risk estimation; risk evaluation and risk reduction plan, the methodology employs Hazard and Operability Technique (HAZOP) for the potential undesired event (UE) identification process and UEs catalogue list setting, and employs Fault Tree Analysis (FTA) technique with specific criteria for risk estimation of UE. The paper presents overview of the proposed methodology and its implementation on one of the potential undesired events UE _ Low operational pressure