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The Advanced Pressurized water Reactor 1400MWe(APR 1400MWe) is developing a standardized evolutionary advanced light water reactor(ALWR) to meet national needs for increasing electric power generation in Korea in the 2000s. But justification factors in study these days have considered only quantitative factors except qualitative factors.Therefore this paper is developed a scoring model by the quantitative and qualitative factors in order to justify the evaluation considering the advanced safety factors in the APR 1400MWe under uncertainty. Especially, the environmental factors, functional factors, and risk factors have been easily explained for the rational economic justification of the qualitative factors under uncertainty.Finally, this model can be simply applied in real fields in order to justify the economic evaluation in the digitalized nuclear power plant.