Information Requirements of a Decision Support System for Severe Accident Management in Nuclear Power Plants

In nuclear power plants, a severe accident is critical involving significant core damage and it managed by using set of Severe Accident Management Guidelines (SAMG). Prepared as guideline that provides lists suggestions rather than strict instructions, SAMG’s contents require frequent decision-making the operators, causing high cognitive load creating an error-prone situation also amplified stressful environment during mitigation efforts. A decision support system (DSS), designed considering human process system’s holistic view, can help operators in making informed appropriate decisions. this study, we aim to identify information requirements designing such DSS for management plants. We combined two methods: Functional Resonance Analysis Method (FRAM) ladder requirements. FRAM systematic analysis functions involved captures processes. developed model based on The identified their implementation are provided. This study first step considers concepts. method used shall contribute design capable supporting achieving safer decision-making, not only plants’ but similar safety-critical systems.