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KMID : 0364920180430010020
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Journal of Radiation Protection and Research
2018 Volume.43 No. 1 p.20 ~ p.28
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Effect of Heat Treatment on Radiation Shielding Properties of Concretes
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Singh Vishwanath P.
Tekin Huseyin O.
Badiger Nagappa M.
Manici Tubga
Altunsoy Elif E.
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Abstract
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Background: Heat energy produced in nuclear reactors and nuclear fuel cycle facilities interactions modifies the physical properties of the shielding materials containing water content. Therefore, in the present paper, effect of the heat on shielding effectiveness of the concretes is investigated for gamma and neutron. The mass attenuation coefficients, effective atomic numbers, fast neutron removal cross-section and exposure buildup factors.
Materials and Methods: The mass attenuation coefficients, effective atomic numbers, fast neutron removal cross-section and exposure buildup factors of ordinary and heavy concretes were investigated using NIST data of XCOM program and Geometric Progression method.
Results and Discussion: The improvement in shielding effectiveness for photon and reduction in fast neutron for ordinary concrete was observed. The change in the neutron shielding effectiveness was insignificant.
Conclusion: The present investigation on interaction of gamma and neutron radiation would be very useful for assessment of shielding efficiency of the concrete used in high temperature applications such as reactors.
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KEYWORD
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Concrete, Heat treatment, Neutron removal cross section, Gamma, Shielding
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