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KMID : 0364920050300010039
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Journal of Radiation Protection and Research
2005 Volume.30 No. 1 p.39 ~ p.44
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Development of Shielding Analysis System for the Reactor Vessel by R-{\theta} Coordinate Geometry
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Kim Ha-Yong
Koo Bon-Seung
Kim Kyo-Yoon
Lee Jung-Chan
Jee Sung-Gyun
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Abstract
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A new developing reactor isn’’t fixed the structure and the materials of reactor components. To perform the shielding analysis for a reactor vessel by R-theta geometry, it takes much effort and time to modeling of source term according to the change of reactor components every time. Therefore, we developed the shielding analysis system for the reactor vessel by R-{theta} geometry, which wasn’’t affected by the reactor core geometry. By using the developed shielding analysis system, we performed the shielding analysis for the reactor vessel of an integral reactor which has the hexagonal geometry of nuclear fuel assemblies in reactor core. We compared the results obtained from the developed system with those obtained from MCNP analysis. Because the results of developed shielding analysis system were more conservative than those of MCNP calculation, it is useful for shielding analysis. As we had developed the new shielding analysis system for a reactor vessel by R-{theta} geometry, we reduced error of model for reactor core which was formerly designed by hand and saved the time and the effort to design source term model of reactor core.
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KEYWORD
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Shielding Analysis, Reactor Vessel, R-{\theta}, integral reactor, HELIOS, MASTER, MCNP
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