Abstract: A data processing method for execution using a programmed computer to generate an objective score value specifying an estimated impact of an oil or gas processing operation comprises: receiving a plurality of data associated with the oil or gas processing operation; identifying, using the plurality of data, a plurality of events that may occur during the oil or gas processing operation; for each event of the plurality of events, determining a relative weighting of potential impact of the event for the oil or gas processing operation using local conditions and a master event profile for the event; for each event of the plurality of events, determining an effectiveness of one or more control efforts; for each event of the plurality of events, determining a score using the relative weighting of the potential impact of the event and the effectiveness of the one or more control efforts; determining the objective digitally stored score value for the oil or gas processing operation using the score for each event of