一体型舶用炉の放射線遮蔽の研究 : 主復水器のガンマ線遮蔽体の軽量化のための2次蒸気系の条件

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This report concerns with activation strength of secondary steam generator for integral type ship reactors. The activation strength is dependent both on the relative position of the steam generator against the active core as well as the temperature of secondary water at the inlet of the steam generator, once conditons are fixed for active core and circustance around the strem generaotr. As a consequence of analysis on the dependence of the activation strength,desirable condition for lessening the amount of activation are suggested both for the position of the steam generator and the temperature of secondary water. It is also pointed out that the shape of the hot well of the main condenser is responsible for the shield weight and the area of controlled zone around the hot well even for the same strength of the decayed gamma-ray source. From the view point of lessening the shield weight and the controlled zone, discussion is also focused on the shape of the hot well ideal for minimizing the shield weight and the controlled zone simultaneously.For the calculation of reaction rate of ^<16>O(n,p)^<16>N occuring in the neutron flux, where neutron energy supposedly rages from 10MeV to 18Mev.
独立行政法人海上技術安全研究所の論文
1972-02-29