Simulation of alternate recovery procedures and evaluation of operator error effects in case of a steam generator tube rupture transient

The Steam Generator Tube Rupture (SGTR) occurred on June 25th 1979 at Doel-2 nuclear power plant (a 392 MWe pressurized water reactor with two loops), has been assumed as reference case for evaluating the potential effect of possible events or actions which might occur or could be taken during the transients. The events considered are related to operator errors or alternate recovery procedures and the results are evaluated in terms of the potential for radioactive releases and plant safety margins. Another aspect examined is the intrinsic plant behaviour in case of no operator action during the transient. The calculations are related to the first 2700 sec after the initiating event