Modelling of QUENCH-03 and QUENCH-06 Experiments Using RELAP/SCDAPSIM and ASTEC Codes

Abstract

To prevent total meltdown of the uncovered and overheated core, the reflooding with water is a necessary accident management measure. Because these actions lead to the generation of hydrogen, which can cause further problems, the related phenomena are investigated performing experiments and computer simulations. In this paper, for the experiments of loss of coolant accidents, performed in Forschungszentrum Karlsruhe, QUENCH-03 and QUENCH-06 are modelled using RELAP5/SCDAPSIM and ASTEC codes. The performed benchmark allowed analysing different modelling features. The recommendations for the model development are presented.

Modeling and simulation of the QUENCH 12 experiment with the RELAP/SCDAPSIM/MOD3.5 code

“…Based on the post-test calculations of the QUENCH experiments, the capability of the best estimate codes can be established and evaluated [24][25][26][27][28]. Here this is done by means of Reactor Excursions and Leak Analysis Program/Severe Core Damage Analysis Package Innovative Systems Software (RELAP/SCDAPSIM).…”

Assessment of RELAP/SCDAPSIM/MOD3.4 Prediction Capability with Severe Fuel Damage Scoping Test

“…The RELAP/ SCDAPSIM code contains improved SCDAP models developed from recent experimental programs, improved numerical analysis, and a three-dimension display. The assessment of RELAP/SCDAPSIM code has been performed with some research reactor [6], PWR core [7], RBMK [8], CANDU [9,10], QUENCH [11,12], and CORA-17 [13]. There are many benchmark studies using RELAP/SCDAPSIM computer program to predict the results of several severe experiments except the SFD-ST test program.…”