Last methodological developments introduced for the building of the N4 PSA (1400 MW EDF power plants)

摘要

These development are combined with the use of the basic systems of knowledge. All the fault trees on the PSA 1300 and N4 were built with KB3, as well for the hydraulic, electric and I&C systems. The use of KB3 improves the homogeneity, the compatibility and the traceability of the studies of the material missions carried out by different people in different centers. AQS formalization improves the exhaustiveness and the traceability of the functional analysis. The simplified modeling of I&C for the automatic actions makes to easily analyze the dependences possible on this system. And the human factor renewed analyze considering the global control system, allows more realism and a better exploitation of the lesson of these studies. With all these elements, EDF considers they have means of modelings powerful and perennial for the next updates of the PSA of reference and for the needs for the uses of the PSA.