High temperature machinery and equipment for high temperature gas-cooled reactors

The high temperature machinery and equipment for high temperature gas-cooled reactors are used for the circulation, heat exchange and confinement of helium gas at 4-5 MPa, at 750 deg C in the case of electric power generation and at 950 deg C in the case of nuclear heat utilization. The selection of the heat resistant materials which are used at such high temperature and high pressure is difficult, and it is the reality that the difficulty is overcome by devising the mechanism and structure. For the development of important high temperature machinery and equipment, the test models are made based on the basic test, and put to the verifying test with a gas loop. The high temperature machinery and equipment for already constructed five high temperature gas-cooled reactors were similarly developed, and the technical basis has been established for the high temperature machinery and equipment of the high temperature gas-cooled reactors for electric power generation. At present, there are Komponenten Versuchskreislauf and Helium Engineering Demonstration Loop as the helium test loops. Intermediate heat exchangers, steam generators, piping and heat insulation and gas circulators are described. (K.I.)