| This study is part of the preliminary safety analysis for the new power expansion project on the University of Missouri Research Reactor (MURR). The loss of coolant accident (LOCA), which is initiated by hypothetical pipe ruptures at the most adverse positions (V507 A ;The results show, based on the RELAP5/MOD2 code predictions, that for the present 10 MW, film boiling never occurs with the postulated LOCA. For higher operating powers up to 30 MW, the peak fuel temperature is far below its melting temperature under the postulated LOCA, although part of the core will have experienced severe thermal hydraulic changes for a short period of five seconds following the pipe breaks.;A number of suggestions have been made for the future power upgrade work to improve the reactor's response to abnormal accidents. Also recommendations are made for facility transient tests to benchmark the RELAP/MURR model and for those users who will use this model in the future. |
