Small break LOCA analysis without emergency core cooling systems using the RELAP5/SCDAP code in VVER-1000 reactor

It has been concluded that, during the small breaks LOCA without emergency core cooling systems, the reactor core is uncovered at 7430 s; consequently the initial relocation to the LP is occurred at 8130 s. Based on the performed analysis the failure of the lower plenum is estimated in 9170 s due to the creep rupture.