RISK ASSESSMENT OF A HYDROELECTRIC DAM WITH PARALLEL REDUNDANT TURBINE

Reena Garg

Abstract: This paper deals with the risk assessment of a hydroelectric dam. Hydroelectric dam produces electric power with the help of water collected in a pond. Here, in this paper, the author has been taken one parallel redundant turbine to improve system’s overall performance. On failure of any one turbine, the whole system works in reduced efficiency state. The whole system can fail due to failure of any of its subsystems. All failures follow exponential time distribution whereas all repairs follow general time distribution. In order to risk assessment of the system, we have obtained reliability function, M.T.T.F. and availability function for considered system. A particular case, when all repairs follow exponential time distribution, and long-run behavior of system have also been computed to improve practical utility of the model. Graphical illustration followed by a numerical computation has also been appended at the end to highlight important results of present study.

Keywords: Reliability, Mean time to failure, exponential time distribution, Inclusion of supplementary variables etc.

DOI: https://doi.org/10.15623/ijret.2014.0301052