Developement of model on noncondensable solubles in reactor coolant and improvement of noncondensable gas model in RELAP5

For the analysis of noncondensable solubles in reactor coolant, analysis model was developed and the modifications of the noncondensable model and wall heat transfer model in RELAP5 code were made. The transport model of noncondensable solubles and effervescence model of noncondensable solubles to noncondensable gases were developed and adapted to the code and the heat transfer correlation derived from the test facility added to the code. A simulation of test facility by both the modified code and the existent code was performed and the comparison the simulation results with the test data was done to verify the analysis model