AREVA HTR concept for near-term deployment

Analysis of Possible Application of High-Temperature Nuclear Reactors to Contemporary Large-Output Steam Power Plants on Ships

“…It results in extensive "piling-up" temperature in steam generator that additionally improves heat exchange parameters and allows to decrease dimensions of the generator. Moreover, water present in steam cycle is not subjected to radioactive exposure [16,19] .…”

“…Special attention should be paid to HTR nuclear reactors. This is a prospective , fast developing solution both for power industry and sea transport [4,16,19,21]. This work is aimed at making analysis of possible profits, in thermodynamic and operational aspects, resulting from application of HTR reactors into ship nuclear power plants of a large output with taking into account load variability , in particular.…”

Using SA508/533 for the HTGR Vessel Material

“…Based on prior design data for prismatic cores, this would correspond to a maximum ROT of ~770°C. The recent recommendations by General Atomics 13 and AREVA 14 for the initial deployment of the HTGR technology employ ROTs below this value, providing confidence that SA508/533 material can be used for the RPVs in these designs.…”

Role of Surface Roughness during Natural Convection

“…Buoyancy induced by natural convection phenomenon with smooth and rough walls has been a subject of many research studies for decades being rich in its applications [1]. Its significance is further enhanced because of its incorporation in passive safety systems of Small Modular Reactors (SMRs) and advanced generations of nuclear reactors [2]. It has remarkable applications from micro scale to macro scale devices, and especially in nuclear industry like removal of decay heat during accident and shutdown phases, nuclear reactor design and safety, reactor insulation, design of radioactive waste containers etc.…”