Simulation of spatial fuel assay using HANARO neutron beam
A sensitivity simulation of neutron tomography was performed for the analysis of the spatial distribution of nuclear materials in the HANARO fuel rod. The internal distribution of the nuclear materials in the fuel rod is very important for the increase of the safety and economics of fuel burnup in the reactor. The neutron radiography facility installed at HANARO will be used for the spatial fuel analysis with a real-time image processing system. Monte Carlo simulation was performed to study the feasibility and sensitivity of the HANARO neutron beam for the spatial fuel assay and to find the optimum conditions for neutron detection. From the sensitivity simulation, the location of the nuclear materials in the rod was evident as expected.
The design of hydrogen production station for Nanhai No.1 Power Plant is presented,and some problems underlining the connection of old and new pipe lines in the process of hydrogen production station reconstruction are discussed. It is proposed to cut off and plug the hydrogen pipe line leading to the main power house after shutdown for hydrogen production station.Remaining hydrogen is purged by nitrogen before on-site welding.Such a design proposal yields sound effect,and some novel and optimized designs such as cooling water system,hydrogen storage system,outsourcing hydrogen system may be referred to by the extension of similar thermal power plant.