ABSTRACT

A. Expósito, C. Queral & G. Rodríguez Universidad Politénica de Madrid (UPM), Madrid, Spain

J. Hortal Spanish Nuclear Safety Council (CSN), Madrid, Spain

ABSTRACT: Over the past years, manyNuclear Power Plant (NPP) organizations have performedProbabilistic Safety Assessments (PSAs) to identify and understand key plant vulnerabilities. As part of enhancing the PSA quality, the Human Reliability Analysis (HRA) is key to a realistic evaluation of safety and of the potential weaknesses of a facility. Moreover, it has to be noted that HRA continues to be a large source of uncertainly in the PSAs. We developed SIMulator of PROCedures (SIMPROC) as a tool to simulate events related with human actions and to help the analyst to quantify the importance of human actions in the final plant state. Among others, the main goal of SIMPROC is to check if Emergency Operating Procedures (EOPs) lead to safe shutdown plant state. First pilot cases simulated have been MBLOCA scenarios simulated by MAAP4 severe accident code coupled with SIMPROC.