[en] HTR-10 Power supply system is an important system set up to achieve HTR-10's safety and operation goal. The structure and configuration of HTR-10 power supply system are introduced and operating patterns in different conditions are described

[en] The features of the emergency power supply system of the 10 MW High Temperature Gas-cooled Reactor (HTR-10) are briefly introduced, and the reliability of the emergency power supply system of the HTR-10 is calculated using fault-tree analysis method. The calculating results are compared with those obtained using the standard nuclear power plant design method. All the results show that the emergency power supply system of the HTR-10 is not only with high reliability but also quite simple as well as economic

[en] Using excellent inherent safety features of high-temperature gas-cooled reactor, created a new-type, passive, and static emergency power supply system. This perfect design shows a lot of advantages that the system is simplified, investment is cut down, safety and reliability of the system are greatly increased. System function, system components and main design principles of the emergency power supply system are comprehensively presented. Additionally, operation modes and safety features of the key system equipment are specially introduced. Finally, various commissioning of the emergency power supply system are summarized for presentation systematically

[en] The breakdown performance of helium was studied by Paschen law, com-paring with air. Combined with the operation parameter of generator in gas turbine coupled with high temperature gas-cooled reactor and the Paschen curve of helium, the relationship between pressure and insulating structure was discussed. The key points for the insulation design of the electrical device in helium were presented. The results show that the insulation performance for helium which lowest breakdown potentials is 150-200 V is much worse than that of air. The existing test and inspect guidelines of the insulation structure for the pressure water reactor can't be used for the helium. High permeability for helium may be an important reason to destroy the insulation structure. (authors)

[en] A novel bandage ring which is made of composite material and metal material is proposed for high speed generator. The novel bandage ring has a metal lining inside and a composite material reinforcing layer outside. The size of metal lining which is made of titanium in this paper can be machined accurately to meet the assembling requirement, and the composite material layer reinforces the bandage ring because of its low density and high strength. So the novel bandage ring is lighter and stronger than traditional metal bandage rings. Theoretical calculation proves that both carbon fiber/epoxy resin and Apmoc/epoxy resin composite have enough strength when the rotation speed of generator is 18,000 r/min. (authors)

[en] Automatic region detection of the maxillary sinus from human face X-ray pictures is studied and presented. Firstly a new algorithm for transformation from X-ray images to bi-level images is introduced, which is based on the local properties of the images. Secondly, a region detection algorithm is used to determine global shape parameters of the maxillary sinus such as area, perimeter length, and complexity. It is shown that the regions of the maxillary sinus detected by the new algorithm coincide well with clinical diagnosis. It is also shown that the cumulative distribution function calculated from the density histogram of detected regions is a useful parameter for assessing the stage of recovery in chronic sinusitis. (author)

[en] The system provides the means of monitor,control and protection for 5 MW THR. It covers six subsystems, they are the nutron flux measurement system, the reactor protection system, the reactor control system, the alarm system, the on-line process computer system and the central control room. The control system overall design is based on the type and the use of 5 MW THR, as well as nuclear and thermal characteristics of the reactor. The design follows the relative code and standards for nuclear power plants safety design

[en] The radioisotope thermoelectric generator which is employed in deep space exploration, converts heat from the natural decay of radioisotope materials into electrical power directly. The ²³⁸Pu radioisotopic fuel has potentials at decay period, specific thermal power and radiation protection, so it is widely adopted in space application. This paper outlines the production of ²³⁸Pu and its separation and purification process. (authors)

[en] The special process was utilized for the design basis accident of plant power cut-off in design of the HTR-10 power system. The plant power cut-off test was done in the course of the HTR-10 hot testing in order to verify the function of the HTR-10 emergency power supply systems. The result of the experiment has shown that the UPS, supplied by the battery, can ensure all engineered safety features to finish their safety function reliably and can supply 20 hours power energy for the demand of the HTR-10 accident supervision and measure

[en] Standby diesel-generator unit is an important seismic category I equipment of HTR-10. Its seismic qualification adopted by simulated earthquake test on the shaking table. The method and program of test are described in detail, the result of experiment are searched and analyzed. As a result, this diesel-generator unit could be satisfied with anti-seismic demand of HTR-10 engineering