The analysis of 14.8 percent cold leg break with the application of hydroaccumulators in the PMK-NVH test facility

A series of reactor safety test have been performed in the experimental reactor simulation facility PMK-NVH of the Paks Nuclear Power Plant, Hungary, with and without the use of hydroaccumulator (SIT) operation. 14.8 percent cold leg break simulation experiments are reported with SITs in action, and the measurement results were analyzed using the RELAP5/mod2 computer code. The experimental conditions, the preliminary conditions, the variations of the parameters, and the interpretation of the results are presented. The assessment of the LOCA simulation tests is discussed. (R.P.) 10 refs.; 55 figs.; 3 tabs