Modular High-Temperature Gas-Cooled Reactor Short-Term Thermal Response to Flow and Reactivity Transients

The short-term thermal response of the Modular High-Temperature Gas-Cooled Reactor is analyzed for a range of flow and reactivity transients. These include loss of forced circulation without scram, moisture ingress, spurious withdrawal of a control rod group, hypothetical large and rapid positive reactivity insertion, and a rapid core cooling event. The coupled heat transfer-neutron kinetics model is also described.