Risk Assessments in Construction of Water Supply Projects in Hanoi, Vietnam

Abstract

Water is one of the developments that Vietnamese government has already committed and this sector always plays an important role in socio-economic life of Vietnam. The Government and Vietnamese people have been trying to improve infrastructure, enhance living standards for people and national socio-economic development. However, in terms of water, Vietnam still has to face many challenges that require a lot of efforts to deal with. Now, in Hanoi, especially the outskirts of the city, there is a huge lack of water works, causing negative impacts on community’s life and the quality of environment. Water distribution systems play a critical role in supplying sufficient water to users with acceptable quantity, pressure, and quality. Risk assessment has been recognized as a useful tool to identify the hazard, analyse vulnerabilities, and risks, and select proper mitigation measures. A questionnaire has been designed including 51 factors that create risk events that can occur during construction works implementation. Risk matrix was used as basis for quantitative risk analysis to determine the most critical risks which were a great impact on project and also to indicate moderate risks that must be taken into consideration. The study analysis and assessment of risks are based on survey questionnaires, which achieved the following findings: 1) there are 26 main risks influencing schedule delays; 2) scientifically ranks influence every single risk on schedule delays; 3) making recommendations can reduce or eliminate influencing factors. This study provides a valuable reference which helps investors and contractors finish on schedule to ensure the benefits when building the Water Supply Projects.