The present invention is linked to a server and the Internet using a dedicated application, In the state in which the results of the risk assessment index by construction type are in the database in the past, When the user inputs detailed information of the desired actual site through the dedicated application, The server analyzes the result of the risk assessment index for each past construction type corresponding to the actual site, Provides a process-based construction safety risk prediction system, characterized in that it displays the level of risk for each work type of the actual site through the dedicated application, It provides a process-based construction safety risk prediction system, characterized in that the risk by construction type of the actual site is displayed by reflecting weather information along with the result of the risk evaluation index for each past construction type. together, By using the process-based construction safety risk prediction system, (1) a risk assessment index calculation step in which the server calculates the risk assessment index by dividing the ratio of the number of accident victims by work type by the ratio of the number of work input for each work type; (2) a risk calculation step of calculating the safety risk of the current project by multiplying the risk characteristic weight of the current project by the previous risk assessment index among the risk assessment index; Consists of including, The risk characteristic weight of the current project provides an operating method of a process-based construction safety risk prediction system, characterized in that it is calculated with input data including construction information and weather information.
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