PECVD processes were developed in a large-area reactor, showing excellent thickness uniformity over the full reactor area (< 4%) and state-of-the-art passivation level (> 16 ms).
The feasibility study focused on the following technical areas: reactor physics and fuel management, fuel performance, and safety.
Four factors at three different levels were considered for the optimisation, namely the interelectrode distance, the current density, the electrode area-reactor volume ratio and the liquid motion driving mode.
Describing correctly the kinetics does not, however, exhaust the chemical reaction engineering of such systems, and many open problems are left in the area of reactor configurations other than the batch and plug flow reactor, and in reaction networks with some degree of topological complexity.
Flotation equipment design is an area of reactor engineering that has not attracted much research interest in chemical engineering.
Model development and scaling analysis allows application of the research results to existing and to future LWRs in the area of reactor design and accident mitigation.
Finally, the sensitivity study shows that heat transfer area and reactor length are dominant parameters for steam reforming with engine out exhausted gases.
The sulfide oxidation and sulfur production would also be affected by the biofilm area to reactor volume (A/V) ratio in the MABR, with high A/V ratio might deteriorate the sulfur production efficiency depending on the oxygen pressure applied.
The operator, Tokyo Electric Power, said that workers on Monday afternoon had found an area near Reactors No. 1 and 2, where radiation levels exceeded their measuring device's maximum reading of 10 sieverts per hour — a fatal dose for humans.
Nuclear experts are also to review a decision to keep a number of plants older than 30 years running and are cooperating with the Interior Ministry to update accident management and evacuation procedures, particularly in heavily populated areas around reactor clusters like those near Dunkerque, in northern France.
