In this work, a brand new passive safety injection system has been designed for the ocean-based Qinshan Phase I nuclear power plant to update and replace traditional active ones. The is made up of high pressure, medium lower pressure system, two-stage automatic depressurization system. To evaluate performance, double-ended cold leg large break LOCA analyzed by best-estimated analysis RELAP5 cod...

The evolution o f the Antarct ic ozone hole is illustrated fo r 1985·1989 and 1990 springs.A detailed study for 1986.19 89 events indicates that evolution. which occurs in ea rly October . isfairly unifo rm over South Pole. Hence fluctuations observed at Syowa, McMurdo Palmer duringthis period arc mostly due to vortex \''3.11 passing out these periferial loca t ions. However, later inNovember w...

In response to the nuclear industry desire extend burnup beyond current licensing practices, US Nuclear Regulatory Commission (NRC) released a research information letter (RIL) that provides basis for analyzing fuel fragmentation, relocation, and dispersal (FFRD) in light-water reactors. Of five elements discussed, most ambiguous is significance of transient fission gas (FG) release (FGR) (tFGR...