Current Steels for Nuclear Pressure Vessels
نویسندگان
چکیده
منابع مشابه
Grain Boundary Segregation in Commercial Nuclear Reactor Pressure Vessel Steels
Grain boundary (GB) segregation of impurity/solute atoms in surveillance test specimens of a commercial western-type pressurized water reactor pressure vessel (RPV) steel has been observed by using state-of-the-art 3D atom probe (3DAP) field ion microscope (laser-assisted local electrode-type atom probe: laser-LEAP). The GB segregation is considered to be an origin of the embrittlement of the R...
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Positron Annihilation Spectroscopy is a valuable microscopic method to study radiation damage in nuclear reactor pressure vessel steels. At SCKoCEN, a new positron lifetime setup, suited to measure positron lifetimes in irradiated steel, is being constructed. The particularity of this setup is that the prompt count rate originating from the induced 60Co-activity in the steel is highly reduced. ...
متن کاملOrigin of Embrittlement of Commercial Nuclear Reactor Pressure Vessel Steels: Cu-rich Precipitates and Defects
The irradiation-induced embrittlement of the nuclear reactor pressure vessel (RPV) steels is currently a vital issue for ensuring safe operation of nuclear power plants in the world since the reactors of the first generation are going to exceed their initially designed operation lifetimes. Thus, it is of great importance to reveal the nanostructural change, attributed to the origins of the embr...
متن کاملmulti-stage optimum design for composite pressure vessels
in this paper, multi-stage optimum design of composite pressure vessels is presented. the design variables for composite vessels include the head shape, the winding angle, the layer thickness, the number of layers, and the stacking sequence. a parameter called modified shape factor is introduced as an objective function. this parameter takes into account the effects of the internal pressure and...
متن کاملWalking and Climbing Service Robots for Safety Inspection of Nuclear Reactor Pressure Vessels
Nuclear reactor pressure vessels are often required regular inspection and maintenance in order to ensure the safety of the reactors. Failing to carry out proper maintenance could cause severe casualty. The usual way of carrying out inspection in these hazardous environments is using long reach fixed base manipulators. However, these manipulators suffer from low payload capacity and relatively ...
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ژورنال
عنوان ژورنال: Tetsu-to-Hagane
سال: 1981
ISSN: 0021-1575,1883-2954
DOI: 10.2355/tetsutohagane1955.67.7_880