Virtual reality-based adaptive dose assessment method for arbitrary geometries in nuclear facility decommissioning

This paper presents an improved and efficient virtual reality-based adaptive dose assessment method
(VRBAM) applicable to the cutting and dismantling tasks in nuclear facility decommissioning. The
method combines the modeling strength of virtual reality with the flexibility of adaptive
technology. The initial geometry is designed using three-dimensional computer-aided design tools,
and a hybrid model composed of cuboids and a point-cloud is generated automatically according to the
virtual model of the object. In order to improve the efficiency of dose calculation while retaining
accuracy, the hybrid model is converted to a weighted point-cloud model, and the point kernels are
generated by adaptively simplifying the weighted point-cloud model according to the detector
position, an approach that is suitable for arbitrary geometries. The dose rates are calculated using
the point kernel method. To account for radiation scattering effects, buildup factors are calculated
using the geo...

Source: Journal of Radiological Protection - June 11, 2018 Category: Physics Authors: Yong-kuo Liu, Nan Chao, Hong Xia, Min-jun Peng and Abiodun Ayodeji Source Type: research