COMPARING TACOM SCORES WITH TWO SETS OF OPERATOR RESPONSE TIME DATA COLLECTED UNDER A HIGHLY INSTITUTIONALIZED TASK ENVIRONMENT

According to operating experiences, it is clarified that an operator's performance could be drastically deteriorated by complicated procedures From this regard, a task complexity measure called TACOM that consists of five sub-measures was developed. In this study, the appropriateness of the task complexity (TACOM) measure that can quantify the complexity of procedural tasks was validated. To this end, two sets of task performance time data that have been extracted under the simulated steam generator tube rupture (SGTR) conditions of the reference nuclear power plant (NPP) A and B were compared with the associated TACOM scores. As a result, it was observed that two sets of task performance time data seem to be soundly explained by the associated TACOM scores.