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Effect of Water Loss on The Neutron Transmission of The Reactor Shielding Concrete

S. Alhajali, M. Boush

The conditions, surrounding the shielding concrete (moisture and temperature), affect the water content within it and therefore the neutron transmission of the shielding concrete. In this study, the impact of changing the amount of water, in four types of candidate shielding concretes was investigated. The neutron transmission of concrete has been identified experimentally and computationally using the MCNP code. The results show a significant increase in the neutron transmission of each the four concrete mixes due to the water losses, especially between 20°C-100°C. Acceptable compatibility was noticed between the measured and calculated results of the neutron transmission of the studied concrete.