Research Article

Assessment of Severe Accident Depressurization Valve Activation Strategy for Chinese Improved 1000 MWe PWR

Table 2

Comparison of RCS depressurization progression for TMLB’ accident.

Without natural 
circulation
With natural 
circulation

Progression (s)
 Start of accident0.00.0
 Reactor shutdown0.00.0
 Opening SADV  manually74108320
 Accumulator  activation78008580
 Start of core melt1245015010
 Lower head of PRV  fails2010021945
RCS pressure when lower head of RPV fails/MPa0.550.28