Abstract: Evaluation of the stability of the ash storage dam is an important aspect of the safe management of ash storage yard as well as the safe operation of the power plant. This paper presents the limit equilibrium analysis method applied on the ash storage dam stability evaluation at the time when the dam reaches its full storage capacity. The results indicate that, under the current reservoir pool level and high pool level, no seepage water could be found at the downstream side of the dam slope and the seepage related damage is not likely. The safety of the current dam under current and the full storage conditions are stable and the safe operation of the dam is warranted.

Key words: Ash Storage Dam, Limit Equilibrium Method, Seepage Analysis, Stability Analysis